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WO2010111998A2 - Conduite d'eaux usées comportant un dispositif de guidage d'eau fraîche et échangeur de chaleur - Google Patents

Conduite d'eaux usées comportant un dispositif de guidage d'eau fraîche et échangeur de chaleur Download PDF

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Publication number
WO2010111998A2
WO2010111998A2 PCT/DE2010/000344 DE2010000344W WO2010111998A2 WO 2010111998 A2 WO2010111998 A2 WO 2010111998A2 DE 2010000344 W DE2010000344 W DE 2010000344W WO 2010111998 A2 WO2010111998 A2 WO 2010111998A2
Authority
WO
WIPO (PCT)
Prior art keywords
fresh water
wastewater
pipe
heat exchanger
common partition
Prior art date
Application number
PCT/DE2010/000344
Other languages
German (de)
English (en)
Other versions
WO2010111998A3 (fr
Inventor
Georg Zimmermann
Original Assignee
Georg Zimmermann
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georg Zimmermann filed Critical Georg Zimmermann
Priority to DE112010001441T priority Critical patent/DE112010001441A5/de
Publication of WO2010111998A2 publication Critical patent/WO2010111998A2/fr
Publication of WO2010111998A3 publication Critical patent/WO2010111998A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/026—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled and formed by bent members, e.g. plates, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C2001/005—Installations allowing recovery of heat from waste water for warming up fresh water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/20—Sewage water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/226—Transversal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/228—Oblique partitions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the invention relates on the one hand to a sewage pipe with a fresh water guide device for transferring heat energy between a sewage and a fresh water, the sewage pipe and the fresh water guide having a common partition, and the fresh water flowing steadily from a fresh water inlet to a fresh water outlet counter to a sewage flow direction the wastewater is guided.
  • the invention relates to a sewer pipe with a fresh water device for transferring heat energy between a wastewater and a fresh water, wherein the sewer pipe and the Frischwasserleit styles have a common partition.
  • the invention relates to a heat exchanger with such a sewer pipe.
  • Generic sewage pipes or heat exchangers are well known from the prior art and are intended to deliver heat energy of the waste water to a fresh water, whereby the fresh water is preheated, so that then less heating energy must be expended to heat the fresh water.
  • German Utility Model DE 20 2006 012 197 U1 discloses cryogenic water preheating during showering via wastewater, in which the waste water is passed through a heat exchanger after leaving a shower tray.
  • a cold water line within the heat exchanger along a waste water flow direction of a sewer pipe back and forth wherein the guided through the heat exchanger so fresh water can be preheated by the warmer wastewater.
  • the disadvantage here is that the fresh water line is guided not only against the waste water flow direction but also in the direction of the waste water flow direction, since optimal heat transfer between two media usually, can only be achieved in the counterflow principle. In this respect, the heat exchanger can not be used optimally effectively.
  • DE 10 2004 053 996 A1 discloses a heat exchange device for waste water, in which a fresh water line runs in thermal contact with the outside of the waste water pipe, the fresh water between a fresh water inlet and a fresh water outlet being repeatedly in relation to the water Wastewater flow direction is guided back and forth to thereby achieve a heat energy transfer from the wastewater to the fresh water out.
  • the fresh water supply is formed by means of guide rails, which are arranged between the sewer pipe and an outer wall of the fresh water line.
  • a sewage pipeline with a heat exchanger for sanitary facilities is also known from the further publication DE 11 2005 000 226 T5, in which a heat exchanger element of a heat exchanger is inserted into a sewage pipeline.
  • the heat exchanger element consists essentially of wound copper tubes, which can be lapped directly by a wastewater, with thermal energy of the waste water to the wound copper tubes flowing fresh water can be discharged.
  • the disadvantage here is that the wastewater flows around a copper pipe spiral directly, so that it is necessary that the wastewater is largely free of impurities. Otherwise there is a high risk of contamination, which permanently adversely affects the performance of the heat exchanger. In this respect, a pre-cleaning of the wastewater is required, whereby the structural complexity for operating the heat exchanger is unfavorably high
  • the object of the invention is achieved by a sewage pipe with a fresh water device for transferring heat energy between a sewage and a fresh water, in which the sewage pipe and the fresh water device form a common sewage pipe. having the same partition, wherein the fresh water is continuously led from a fresh water inlet to a fresh water drain against a waste water flow direction of the waste water, and means for deflecting the fresh water are provided transversely to the waste water flow direction, so that the fresh water is also guided with a counterflow direction across the waste water flow direction.
  • the fresh water in the transverse direction to the wastewater flow direction preferably repeatedly divert, thereby achieving that the fresh water can dwell much longer in the Frischwasserleit adopted the sewer pipe in its steady promotion in the opposite direction to the waste water flow direction.
  • the heat energy of the wastewater can be given much longer and thus better to the fresh water which flows through the Frischwasserleit adopted the sewer pipe.
  • sewage pipe here describes any sewage device through which wastewater can be discharged into a sewage system or the like, preferably a sewage pipe, which can be easily integrated into a sewage pipe of a sanitary facility of a building
  • the present wastewater pipe ideally includes suitable connection flanges or connection sleeves, in order to make it easy to fit a commercial one Sewer pipe, about the size of DN 50 or DN 100 or the like to connect.
  • the fresh water guiding device has a tubular housing which at least partially surrounds the present sewage pipe.
  • Such a common partition wall can be structurally particularly simply represented by the existing pipe wall of the sewage pipe, wherein this sewage pipe wall at the same time forms the inner wall of the present fresh water guide device.
  • the object of the invention is achieved by a sewage pipe with a Frischwasserleit adopted for transferring heat energy between a wastewater and a fresh water, wherein the sewage pipe and the Frischwasserleit nails have a common partition, are provided in which means for consolidating the common partition wall.
  • the common partition can be made particularly thin-walled, if it can be additionally consolidated or stabilized by such strengthening means. As a result, the effectiveness of the heat energy transition between see the wastewater and the fresh water can be significantly increased.
  • the strengthening means are particularly advantageous in view of the prevailing higher pressure conditions within the Frischwasserleit Anlagen, since often the fresh water with more than 8 bar, for example, a mixer fitting a shower or the like is supplied. These pressure conditions can have an adverse effect on the strength or on the stability of the common partition, especially when it comes in the Frischwasserleit adopted in addition to pressure surges in the fresh water.
  • stoppers arranged in the fresh water flow channel also do not adversely affect the outer mass of the present sewage pipe.
  • the common partition at least partially has a partition wall thickness of less than 1.5 mm or less than 1 mm, preferably less than 0.8 mm.
  • the wall thickness is 0.5 mm, as practical tests have shown that this heat transfer performance can be significantly increased.
  • partition wall thickness may depend in particular on the diameter of the sewer pipe, with thinner sewer pipes and thinner partition wall thicknesses can be realized.
  • the object of the invention is also achieved by a sewage pipe with a fresh water device for transferring heat energy between a wastewater and a fresh water
  • the sewage pipe and the Frischwasserleit nails have a common partition wall, and the common partition at least partially has a wall thickness of less than 1.5 mm or less than 1 mm, preferably less than 0.8 mm.
  • the effectiveness of the heat transfer can be substantially improved by means of a particularly thin common partition wall that even small amounts of heat energy of the wastewater can already be used advantageously for a freshwater pre-heating.
  • the object of the invention is in particular also achieved by a heat exchanger for transferring heat energy from a first medium to another medium, wherein the heat exchanger is through a sewer pipe according to one of the features and / or Characteristic combinations distinguished.
  • An advantageous embodiment variant of the present invention provides at least one forced transverse guidance device for fresh water, which is arranged within a fresh water guide channel of the fresh water guiding device.
  • the forced transverse guidance device By means of the forced transverse guidance device, the fresh water can also be conducted transversely to the direction of the waste water flow in the direction of the flow of the latter.
  • Such forced transverse guidance devices can structurally configure the present deflection means in a particularly simple manner.
  • one of the forced transverse guidance devices cumulatively or alternatively designed such that at least one forced transverse guide device forms a Festistsspant for the common partition, can be designed structurally simple means of such forced transverse guide means at the same time the present restraining means.
  • a preferred embodiment provides that the deflecting means and / or the consolidating means comprises a fresh water baffle arranged substantially transversely to the direction of waste water flow, between the common dividing wall and a raw-type housing of the fresh water guide device.
  • fresh water baffle device can be designed in many ways in order to achieve such thorough mixing of the fresh water.
  • the deflecting means and / or the consolidating means form a meandering device, by means of which the fresh water is guided meandering through the fresh water guiding device with respect to the sewage flow direction, which offers a further possibility of extending the path of the fresh water through the fresh water guiding device ,
  • Such a meandering device can be structurally simple formed by suitably arranged fresh water baffles.
  • a particularly preferred embodiment provides that the deflecting means and / or the fastening means are arranged helically around the sewage pipe.
  • the deflecting means and / or the fastening means are arranged helically around the sewage pipe.
  • the fresh water can be guided around on its way in the direction of counterflow around the entire outer surface of the sewage pipe, whereby the fresh water can travel a particularly long way within the fresh water device.
  • a related embodiment also provides that the deflecting means and / or the fastening means are arranged as a single helical structure or as a multiple helical structure around the sewage pipe. This also makes it possible to provide a corresponding fresh water guide channel in a structurally simple manner.
  • the deflection means and / or the production means comprise a circular frame or a ring frame.
  • a ring or circular frame is arranged, for example, transversely to the wastewater flow direction within the fresh water guide device and can be provided, for example, by means of a forced transverse guide device.
  • such a circular frame is designed such that it the fresh water flow channel between the common partition wall and the housing outer wall of the Frischwasserleit adopted completely closes, it is advantageous if the deflection and / or consolidation means have a passage for fresh water.
  • the flow behavior of the fresh water within the fresh water guiding device can additionally be advantageously influenced.
  • a fresh water passage opening of the first deflecting means and / or first consolidating means and a further fresh water passage opening of adjacent further deflecting means and / or adjacent further tightening means are arranged mirror-inverted relative to one another.
  • a meandering fresh water through the fresh water guide can be realized structurally simple here by a meandering fresh water through the fresh water guide.
  • the effectiveness of heat energy transfer from the waste water to the fresh water can be increased if the deflection means and / or consolidation means comprise a heat conducting device.
  • the heat energy from the wastewater can be transmitted much better to the fresh water, if, for example, the fresh water can flow around this heat conduction in directly.
  • a heat-conducting device can for example also be formed directly from the above-described single-helical structures or multiple helical structures and / or from a ring or circular frame. As a result, the structural complexity of the present sewage pipe can be further substantially reduced.
  • a particularly good thermal energy transfer between the sewer pipe or the common partition wall and such a heat conduction device can be achieved if the heat conduction device is firmly bonded to the common partition wall. is orders. In particular, welding, soldering, pressing and / or adhesive connections are suitable for this purpose. In this case, the connection material is ideally to be chosen such that the best possible unimpeded thermal conductivity can be achieved.
  • the heat-conducting device also has a material thickness of less than 1.5 mm or less than 1 mm, heat energy transfer between the waste water and the fresh water can be made even more effective.
  • a further increase in efficiency in terms of heat energy transfer between the waste water and the fresh water can be achieved by means for swirling the fresh water within the fresh water guide.
  • the swirling means comprise a swirling device, by means of which the fresh water within the fresh water guiding device can be set in rotation, an exceptionally good mixing of warmer areas and colder areas of the fresh water can be ensured within a fresh water guiding channel.
  • the swirling means can be of various shapes.
  • such a swirl device is formed directly by the deflection means or by the fastening means.
  • the swirl device structurally very easily can immediately comprise a forced transverse guide device which is arranged transversely within a fresh water channel of the fresh water guiding device.
  • the swirl device comprises a spiral formation which is arranged longitudinally within a fresh water guide channel of the fresh water guide device.
  • Such a spiral structure can be produced, for example, structurally particularly simply by means of a spirally twisted spiral plate.
  • the above-described Zwangsquer entries are particularly in the form of circular and / or Ringspante also statically positive on the entire structure of the heat exchanger, in particular on the sewer pipe, from.
  • the material thickness of the sewer pipe especially in the area of Frischwasserleit
  • an advantageous honeycomb-like structure can be created within the fresh water guiding device.
  • a statically suitable additional connection of a positive guidance device with a housing of the fresh water guide, such as an outer tube an even higher static load capacity of the heat exchanger can be achieved.
  • the forced transverse guidance devices can also be machined out of a blank by removal, boring, milling or similar processes, which then forms a corresponding wastewater pipe. It is advantageous in this case that an essentially homogeneous material structure is present which can additionally positively influence a thermal conductivity. This in turn can have a positive effect on the statics or on the reduction of the wall thickness of the drainpipe.
  • the forced transverse guide devices can be particularly easily tapered radially outward can be made, whereby the heat transfer can be further improved, as already described above.
  • the forced-circulation devices described here are permeated with very fine fresh-water passages at least in some areas, but preferably only so far that a fresh-water main flow within the fresh-water conducting device is only minimally weakened, and only so far the statics with respect to a Kreisspants is not endangered.
  • an even higher surface in the heat exchanger can be achieved.
  • the finest fresh water passages can help to disrupt the inevitably forming heat film on the surface of the heat conductors.
  • the circular ribs or heat fins can also be made by sheet metal plates. For example, by using metal strips, which can be brought to shape by bending or bends of the sheet, a manufacturing form can be selected by means of minimized material waste can be produced particularly cost.
  • FIG. 1 schematically shows a view of a first embodiment of a heat exchanger with a wastewater pipe arranged concentrically in a fresh water guide device and with forced transverse flow devices each comprising a plurality of fresh water passage openings of different sizes;
  • FIG. 2 schematically shows a first cross-sectional view of the heat exchanger of FIG. 1 along section line A-A;
  • FIG. 3 is a schematic cross-sectional view of the heat exchanger of FIGS. 1 and 2 along section line B-B; FIG.
  • FIG. 4 schematically shows a view of a further exemplary embodiment of a heat exchanger with a wastewater pipe arranged centrally in a fresh water guide device and with forced transverse guide devices each comprising a fresh water passage opening;
  • FIG. 5 is a schematic view of a 90 ° rotated view of the heat exchanger of FIG. 4;
  • FIG. 6 shows schematically a first cross-sectional view of the heat exchanger from FIGS. 4 and 5 along the section line C-C;
  • FIG. 7 schematically shows a further cross-sectional view of the heat exchanger from FIGS. 4 to 6 along the section line D-D;
  • FIGS. 4 to 7 schematically shows a detailed view of a region of the heat exchanger from FIGS. 4 to 7 with an intermediate rib
  • FIG. 9 shows schematically a view of another exemplary embodiment with a wastewater pipe likewise centrally arranged in a fresh water guide device and with a volume flow distribution device;
  • FIG. 12 schematically shows a view of an additional exemplary embodiment of a heat exchanger with swirling devices comprising openings
  • FIG. 13 schematically shows a detailed view of a rotation function of the swirl devices within a fresh water guide channel
  • FIG. 14 schematically shows a first cross-sectional view of the heat exchanger from FIGS. 12 and 13 along the section line E-E;
  • FIG. 15 shows a schematic cross-sectional view of the heat exchanger from FIGS. 12 to 14 along the section line F-F;
  • FIGS. 12 to 15 shows schematically a further view of the heat exchanger from FIGS. 12 to 15;
  • FIG. 17 is a schematic plan view of one of the swirling devices of the heat exchanger of FIGS. 12 to 16;
  • FIG. 18 schematically shows a cross section of one of the swirling devices of the heat exchanger from FIGS. 12 to 17; FIG. and
  • FIG. 19 schematically shows an alternative swirl device in the form of a spiral plate.
  • the heat exchanger 1 shown in FIG. 1 consists essentially of a sewage pipe 2 with a fresh water-conducting device 3, wherein the sewage pipe 2 in this heat exchanger 1 is arranged concentrically within the fresh-water-conducting device 3.
  • the Frischwasserleit worn 3 is equipped in this first embodiment with a tubular housing 4.
  • the sewage pipe 2 is arranged substantially approximately two-thirds of its diameter above a horizontal center plane 5 of the heat exchanger 1.
  • the sewage pipe 2 is slightly inclined relative to this horizontal center plane 5 of the heat exchanger 1 and thus to the fresh water guide 3. order, so that a wastewater always flows from an inlet region 6 of the sewer pipe 2 to a discharge region 7 of the sewer pipe 2, provided that the heat exchanger 1 is properly installed horizontally aligned.
  • a wastewater flow direction 8 which is directed from the inlet region 6 to the outlet region 7 through the sewage pipe 2, always results at the heat exchanger 1.
  • the sewage pipe 2 with respect to the horizontal center plane 5 is approximately inclined by 1 degree (not explicitly drawn).
  • the present heat exchanger 1 operates according to the counter-flow principle, whereby a particularly high efficiency of heat energy transfer from the wastewater to the fresh water can be achieved.
  • the waste water which comes for example from a shower
  • the fresh water which is passed through the Frischwasserleit Road 3 through about a mixer tap (not shown here), for example, the above-mentioned shower device.
  • the heat exchanger 1 is characterized in that the waste water pipe 2 and fresh water 3 at least in the area of Frischwasserleit Rhein 3 has a common partition 12, so that the wastewater within the sewer pipe 2 and the fresh water within the fresh water 3 only this common partition 12 are separated from each other. As a result, heat energy transfer can take place directly only through the common partition wall 12, as a result of which the heat exchanger 1 once again experiences an increase in efficiency.
  • the present heat exchanger 1 is characterized in a particularly advantageous manner in that the fresh water guiding device 3 has a plurality of forced transverse guidance devices 13 in the form of deflecting means 14, which supply the fresh water in particular. deflect special transversely to the wastewater flow direction 8 within the fresh water 3.
  • the forced crossflow devices 13 and the deflecting means 14 are formed as baffles 15 with fresh water passage openings 16 (see in particular FIGS. 2 and 3), so that along the horizontal center plane 5 a meandering fresh water guide channel 17 results the way of fresh water through the Frischwasserleit worn 3 through substantially in the main direction of counterflow 11 extended.
  • the fresh water guided through the fresh water guide device 3 or through the fresh water guide channel 17 can remain in contact with the common partition wall 12 much longer. Due to this, heat energy transfer from the waste water to the fresh water is further improved.
  • sectional view A-A can be seen on the baffle plate 15 shown there on the right fresh water passage openings 16, whereas left in dashed line the fresh water passage openings 16 of a baffle plate behind are indicated.
  • the fresh water passage openings 16 arranged below are provided with a larger cross section than fresh water passage openings 16 lying above them. This achieves that the lower area of the fresh water guiding device 3 , So in particular the area of the fresh water 3 below the horizontal center plane 5, much more fresh water can be flowed through as overlying areas. This is particularly advantageous when the wastewater pipe 2 is not completely filled with wastewater, but for example only in its lower third, which then more heat energy can be transferred from the wastewater to the fresh water, which amplifies the fresh water 3 at the bottom flows through. This also advantageously an increase in effectiveness of the heat energy transfer between the wastewater and the fresh water can be achieved.
  • the present forced lateral guide devices 13 or the baffles 15 not only perform the function of deflecting means 14, but also each have a reinforcing function for the sewage pipe 2, in particular for the common partition wall 12 of the heat exchanger 1.
  • the heat exchanger 1 has, in addition to the deflection means 14, also firming means 19 for strengthening the common partition, so that it can be advantageously designed particularly thin-walled.
  • the dividing wall thickness of the common dividing wall 12 is only 0.5 mm, so that the heat energy transfer between the waste water and the fresh water can be substantially further improved.
  • the common partition 12 which is yes in direct contact with the fresh water, by the strengthening means 19th is reinforced, so that an implosion of the sewer pipe 2 due to the relatively high pressure within the fresh water device 3 can be avoided.
  • the tightening means 19 are advantageously each formed as a circular frame 20.
  • the circular frame 20 extends between the common partition wall 12 and the tubular housing 4 of the fresh water guide device 3, so that a baffle plate 15 can be provided with the fastening means 19 at once.
  • the baffles 15 and the circular mullion 20 are used immediately as a heat conducting means 21, which further improve a heat energy transfer between the wastewater and the fresh water significantly.
  • the baffles 15 and the circular rib 20 are materially connected to the common partition wall 12 and also have a material thickness of less than 1 mm, so that they can derive the heat energy particularly fast to the fresh water or cooled particularly fast by the fresh water can be. As a result, the heat energy from the wastewater can be dissipated as quickly as possible to these heat-conducting devices.
  • the present forced transverse guide means 13 not only take on the function of deflecting means 14 or of strengthening means 19 but also immediately the function of a heat conducting device 21, so that the present heat exchanger 1 can be used particularly effectively. All this is enormously advantageous in order to be able to transfer even low heat energy from the wastewater to the fresh water.
  • the total cross section of the fresh water passage openings 16 should ideally be much larger than the cross section of the surrounding fresh water lines (not shown here), in order to avoid that in the heat exchanger 1 too large pressure losses can occur. The same also applies in the flow cross-section between the tubular housing 4 and the common partition wall 12.
  • FIGS. 4 to 8 a further exemplary embodiment of a heat exchanger 101 comprising a sewage pipe 102 with a fresh water guide 103 is shown.
  • the fresh water guide 103 has a tubular housing 104 with a fresh water inlet 109 and a fresh water outlet 110.
  • the sewage pipe 102 has an inlet region 106 and an outlet region 107 and thus a wastewater flow direction 108, which is directed from the left to the right in FIGS. 4 and 5.
  • the sewage pipe 102 is arranged centrically opposite the fresh water guide 103 so that a horizontal center plane 105 is not only centered with respect to the fresh water guide 103 but also with respect to the sewage pipe 102.
  • the heat exchanger 101 operates according to the principle of a countercurrent heat exchanger, so that the fresh water is passed through a fresh water duct 117 of the fresh water guide 103 counter to the waste water flow direction 108.
  • the waste water pipe 102 and the fresh water guide 103 have a common partition 112, which in the present case likewise has a partition wall thickness of 0.5 mm.
  • tightening means 119 are each provided in the form of a circular ruff 120 (see in particular also FIGS. 6, 7 and 8).
  • Each of these circular guards 120 likewise provides a forced transverse guidance device 113, by means of which deflection means 114 can be realized within the fresh water guiding device 103.
  • all the forced-transverse-guiding devices 113 of the fresh-water guiding device 103 design corresponding baffle plates 115, wherein each of the baffle plates 115 has a single fresh-water passage opening 116.
  • Each of these fresh water passage openings 116 is provided in the upper area of the fresh water guide device 103.
  • a separating longitudinal wall 125 is disposed within the Frischwasserleit acquired 103 between the common partition wall 112 and the tubular housing 104 of Frischwasserleit responded 103.
  • the Frischwasserleit acquired 103 is divided in the upper region in a vertical center plane 118 of the heat exchanger 101 in a right half and in a left half.
  • the heat exchanger 101 is depicted along the section line D-D, the circular frame 120 lying in the section line D-D having its fresh water passage opening 116 to the left of the dividing longitudinal dividing wall 125.
  • the passage opening 116 of the circular shawl 120 from FIG. 6 is shown lying behind it.
  • Both representations according to FIGS. 6 and 7 show the respective circular frame 120 from a viewing direction which is directed in the direction of waste water flow 108.
  • the heat conduction device 121 extends in the form of a Kreisspants 120 from the common partition 112 to the tubular housing 104 of Frischwasserleit responded 103, projects the embosseleitrippe 126 only to about half in the Frischwasserleitkanal 117, so that the embosseleitrippe 126 Although a Can form baffle 115, but no forced transverse guide means 113 in the sense of the deflection 114 represents.
  • the bacteriarmleitrippe 126 also forms fixing means 119 for the waste water pipe 102 and for the common partition wall 112 in the form of a arranged around the sewage pipe 102 ring frame 129th
  • Both the respective heat-conducting device 121 and the respective intermediate heat-conducting rib 126 taper continuously with increasing radial distance, so that the heat-conducting device 121 or the intermediate heat-conducting ribs 126 are made thicker in the region of the common partition wall 112 than at their tubular housing 104 of the fresh-water conducting device 103 facing ends. In this way, a further improved heat transfer between the wastewater and the fresh water can be realized.
  • the common dividing wall 112 has a dividing wall thickness 130 which is substantially smaller than a thickness 131 of the tubular housing 104.
  • the dividing wall thickness 130 of the common dividing wall 112 shown here of the sewer pipe 2 is only 0.5 mm, so that an exceptionally good thermal energy transfer between the wastewater and the fresh water can take place.
  • Fresh water flow advantageously passed around the entire lateral surface of the sewage pipe 102, whereby an even higher residence time of the fresh water within the Wärmü- Bertragers 101 can be achieved, which in turn ideally leads to an even higher outlet temperature and performance of the heat exchanger 101.
  • the fresh water is passed through the heat exchanger 101 in a particularly effective manner by means of the heat fins 121 and the dividing longitudinal dividing wall 125.
  • the flow cross sections are also to be dimensioned here in such a way that a critically increased pressure drop in the heat exchanger 101 can not occur in order not to impair subsequent technical devices (not shown). Therefore, the cross section of the fresh water passage openings 116 should ideally correspond to the cross section between the common partition 112 and the tubular housing 104 times the distance of the heat fins 121.
  • another heat exchanger 201 likewise consists of a sewage pipe 202 with a fresh water guide device 203, the sewage pipe 202 being placed centrically opposite a tubular housing 204 of the fresh water guide device 203.
  • the wastewater flows from an inlet region 206 to an outlet region 207 through the sewage pipe 202 with a waste water flow direction 108.
  • the fresh water is accordingly passed through the fresh water guide device 203 with a main counterflow direction 211, wherein the fresh water device 208 is attached to the tubular housing 204 a fresh water inlet 209 and a fresh water outlet 210 are provided.
  • the sewage pipe 202 and the fresh water guide 203 have a common partition wall 212, which is very thin-walled, in order to ensure a more effective heat energy transfer between the wastewater and the fresh water here.
  • the common dividing wall 212 has a dividing wall thickness of 0.5 mm, wherein for stabilizing or consolidating this very thin-walled common dividing wall 212 corresponding strengthening means 219 in the form of dividing longitudinal dividing walls 225 (numbered here only by way of example) are provided.
  • the dividing-length dividing walls 225 are concentrically distributed around the sewage pipe 202, with each of the dividing-length dividing walls 225 extending from the common dividing wall 212 to the tubular housing 204 of the fresh-water conducting device 203.
  • a plurality of fresh-water conduits 217 are provided in the longitudinal direction of the heat exchanger 201, so that the Fresh water within the fresh water guide 203 according to a main counterflow direction 211 can be passed through the heat exchanger 201.
  • a baffle plate 215 with differently sized fresh-water passage openings 216 is arranged inside the fresh-water guide device 203.
  • the fresh water passage openings 216 with the larger cross sections are located below a horizontal center plane 205 of the heat exchanger 201, so that a larger fresh water volume flow can flow through the fresh water guide 203 in this area than is possible above the horizontal center plane 205.
  • the partition longitudinal partition walls 225 can well perform functions of heat fins since they are arranged along the main counterflow direction 211 in a star arrangement. Although they do not function as a circle or ring frame, they also fulfill static properties here.
  • the additionally inserted baffle 215 not only increases the stability, but at the same time advantageously splits the flow of fresh water.
  • the fresh water flow can be split by the different sized fresh water passage openings 216 in the baffle 215 so that where the highest heat potential is in terms of wastewater, most of the fresh water can be available.
  • FIG. 112 Another advantageous fresh-water duct 317 of a fresh-water duct 303 of a sewage pipe 302 shows an additional exemplary embodiment of a heat exchanger 301 according to FIG. 11.
  • the sewage pipe 302 is arranged centrally relative to the fresh-water duct 303, the sewage pipe 302 and the fresh-water duct Device 303 have a common partition wall 312.
  • the Frischwasserleit Rhein 303 also has a tubular housing 304, which surrounds the sewer pipe 302 at least partially.
  • the wastewater is passed according to the wastewater flow direction 308 passed through the heat exchanger 301, while the fresh water flows through the heat exchanger 301 according to a main counterflow direction 311.
  • either a single helix formation 340 or a multiple helix formation 341 can extend helically in the main counterflow direction 311 around the waste water pipe 302.
  • the fresh-water guide channel 317 can be realized in a particularly simple manner within the fresh-water conducting device 303 or between the sewage pipe 302 and the tubular housing 304.
  • the fresh water is helically guided around the entire waste water pipe 302, whereby the residence time and the path of the fresh water within the Frischwasserleit Rhein 303 can be significantly extended so that a heat transfer between the wastewater and the fresh water designed all the more effective can be.
  • both helical structures 340 and 341 strengthening means 319 for stabilizing or consolidating the sewage pipe 302 it is structurally simple to design so that a particularly thin common dividing wall 312, ideally with a dividing wall thickness of 0.5, also with regard to the heat exchanger 301 mm or less can be created.
  • the two helix formations 340 and 341 can either be drawn around the waste water pipe 302 as a smooth sheet or brought to the shape of the respective helix formation 340, 341 by striking the sheet.
  • An advantage of the smooth sheet is a lesser one Flow resistance, whereby the fresh water channel can be kept correspondingly smaller.
  • An advantage of the folded sheet is a higher static stability and a larger surface area of a heat conducting device formed thereby.
  • the respective helix formation can therefore also be executed as a double or multiple helix formation 341, it being important to ensure that a fresh water inlet and a fresh water outlet is ideally designed so that all fresh water channels formed are flowed through uniformly, and that the sum of the individual Frischwasserleitkanal - Cross sections gives the required total flow area.
  • a further advantage of the embodiment as a helical formation 340, 341 is that the fresh water does not undergo such strong flow direction changes as in the above-described embodiments, resulting in less friction and thus less
  • the respective helix 340, 341 can thereby be greatly reduced in the slope, which can advantageously lead to more heat rib surface can be provided in the heat exchanger, less slope equal to more coiling on the same length.
  • a particular further advantage of such helical structures 340, 341 is the fact that they do not have to have a fixed installation position, whereby the manufacturing and / or assembly can be made particularly simple with lower installation tolerances. Furthermore, they almost always work optimally and they vent themselves completely independently.
  • a sewage pipe 402 is arranged centrically opposite a fresh water-conducting device 403 of the heat transfer 401, wherein the fresh water-conducting device 403 comprises a tubular housing 404 which at least constitutes the sewage pipe 402 partially encased.
  • a fresh water passage 417 is configured, wherein the pipe wall of the Sewage pipe 402 again forms a common partition wall 412 with respect to the sewer pipe 402 and the fresh water guide 403.
  • the fresh water guide device 403 also has forced transverse guide devices 413, which, as explained above, can be configured on the one hand as deflecting means 414 and on the other hand as strengthening means 419 or heat conducting devices 421.
  • the forced transverse guide devices 413 present here take on three functions, namely first to redirect the fresh water routed through the fresh water guide 403 transversely to a main counterflow direction 411 of the fresh water, secondly to stabilize or consolidate the common partition wall 412 and thirdly to transfer heat energy from the waste water to fresh water to improve, as already extensively explained above with reference to the other embodiments.
  • the swirling devices 452 used with respect to the heat transfer 401 are formed directly by the forced transverse guide devices 413, in that the forced transverse guiding devices 413 configure extensions 453 (here only as an example), by means of which the fresh water can be set in rotation 451.
  • the abutments 453 are introduced at an angle 454 not equal to 90 ° to the flow direction of the fresh water into the forced transverse guiding device 413, so that, viewed in the direction of flow of the fresh water guide channel 417, an inclined plane is formed.
  • the fresh water flowing through the fresh water conduit 417 follows, for example due to friction and the existing flow resistance, the geometry of the swirling means 452 and is thereby mixed.
  • a downward or upward flow 456 (here only exemplified) in the edge region transverse to the main counter-flow direction 411 is the result. If now every other one of the forced transverse-guiding devices 413 mirror inverted (see in particular FIGS. 14 and 15) to the first one, the fresh water is led up at a first forced transverse-guidance device 413 and led down to the nearest forced-transverse device 413, whereby the fresh water within the Fresh water duct 417 begins to rotate.
  • a first of the swirling devices 452 according to the section line E-E is represented by the heat exchanger 401.
  • a mirror-inverted further swirling device 452 is depicted with the representation according to FIG. 15 along the section line F-F of the heat exchanger 401.
  • FIG. 17 a plan view of such a swirl device 452 of the heat exchanger 401 is illustrated in more detail again. Good to see is the outer edge of the forced transverse guide device 413, which provides the swirl device 452. This outer edge 458 is ideally connected to the inside of the tubular housing 404.
  • the abutments 453 and the oblique planes 455 provided or formed thereby, which laterally form the outer edge 458 radially further inward edges 459 (numbered here only by way of example).
  • the radially further inwardly lying edges 459 are in this case facing the common partition wall 412, wherein the forced guidance devices 413 in the sense of heat conduction devices 421 are ideally connected in a materially bonded manner to the common partition wall 412.
  • one of the forced-transverse-guiding device 413 configured as a swirl device 452 is again represented with respect to the fresh-water duct 417 in cross-section between the common partition wall 412 and the tubular housing 404, the inclined plane 455 of the swirl device 452 of FIG a first folding edge 461 extends to a second folding edge 462.
  • the second folding edge 462 is shown hidden in the illustration according to FIG. 18.
  • the two folding edges 461 and 462 are also marked on the additional detail monitor 457 (FIG. 17).
  • An alternative to the swirling means 452 swirling device 465 is shown with the illustration of FIG. 19.
  • the alternative swirl device 465 is configured in the form of a spiral plate 466, which extends along a longitudinal axis 467.
  • the alternative swirl device 465 can be inserted into virtually any desired fresh water guide channel, wherein the alternative swirl device 465 in the form of the spiral plate 466 can likewise set the fresh water into rotation.
  • spiral plates 466 can be installed in all embodiments. But they can also be used to retrofit existing heat exchangers and thereby increase their effectiveness.
  • spiral sheets 466 can be made simply by twisting strip material and thereby be brought to the desired flow channel geometry by processing their outer shape.
  • connections for the various embodiments to a fresh water line and a service water line will not be described or illustrated in detail here. They are ideally designed to be compatible with common, marketable systems. For example, they are suitable for compression sleeves, Lötfittinge, fittings, push-in sleeves, flanges or the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'objectif de l'invention est d'améliorer des conduites d'eaux usées comportant des dispositifs de guidage d'eau fraîche pour le transfert d'énergie thermique entre des eaux usées et de l'eau fraîche, de façon à accroître l'efficacité du transfert d'énergie thermique entre les eaux usées et l'eau fraîche. À cet effet, on fait appel selon l'invention à une conduite d'eaux usées comportant un dispositif de guidage d'eau fraîche pour le transfert d'énergie thermique entre les eaux usées et l'eau fraîche, ladite conduite d'eaux usées et ledit dispositif de guidage d'eau fraîche présentant une paroi de séparation commune, l'eau fraîche étant guidée d'une entrée d'eau fraîche à une sortie d'eau fraîche en permanence dans un sens opposé au sens d'écoulement des eaux usées. La conduite d'eaux usées est caractérisée par des moyens servant à dévier l'eau fraîche perpendiculairement au sens d'écoulement des eaux usées de sorte que l'eau fraîche est guidée dans un sens d'écoulement inverse principal qui est également perpendiculaire au sens d'écoulement des eaux usées.
PCT/DE2010/000344 2009-03-30 2010-03-24 Conduite d'eaux usées comportant un dispositif de guidage d'eau fraîche et échangeur de chaleur WO2010111998A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112010001441T DE112010001441A5 (de) 2009-03-30 2010-03-24 Abwasserrohr mit einer Frischwasserleiteinrichtung sowie Wärmeübertrager

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DE102009014936A DE102009014936A1 (de) 2009-03-30 2009-03-30 Abwasserrohr mit einer Frischwasserleiteinrichtung sowie Wärmeübertrager
DE102009014936.8 2009-03-30

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WO2010111998A2 true WO2010111998A2 (fr) 2010-10-07
WO2010111998A3 WO2010111998A3 (fr) 2010-12-16

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DE102012003533A1 (de) * 2012-02-25 2013-08-29 Richard Kindich Abflussvorrichtung mit einer integrierten Wärmetauscheinrichtung
WO2016094971A1 (fr) * 2014-12-15 2016-06-23 Intel Energy Installation de récupération de la chaleur d'eaux de drainage chaudes du type échangeur thermique vertical
EP3236188B1 (fr) * 2016-04-18 2018-12-19 Hamilton Sundstrand Corporation Échangeurs thermiques
NL2032890B1 (nl) * 2022-08-29 2024-03-15 Gw Leidingtechniek B V Warmte-terugwin-inrichting voor toepassing in een rioleringssysteem en overgangsinrichting

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US1983466A (en) * 1933-11-14 1934-12-04 Joseph E Kline Oil cooler
US4502529A (en) * 1981-09-30 1985-03-05 Varney Paul R Heat recovery system
IT1222740B (it) * 1987-09-25 1990-09-12 Bravo Spa Evaporatore perfezionato per fluidi refrigeranti
DE4202791A1 (de) * 1991-05-11 1992-11-12 Linder Rudolf Fa Waermetauscher fuer abwasser fuehrende rohr- oder schlauchleitungen
US7838875B1 (en) 2003-01-22 2010-11-23 Tsang Dean Z Metal transistor device
DE102004053996A1 (de) 2004-11-09 2006-05-11 Thomas Neubauer Wärmetauschvorrichtung für Abwasser
US20080000616A1 (en) * 2006-06-21 2008-01-03 Nobile John R Heat exchanger and use thereof in showers
DE202006012197U1 (de) 2006-08-09 2007-03-15 Täuber, Wilhelm Kaltwasservorwärmung beim Duschen über Abwasser

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DE102009014936A1 (de) 2010-10-07
DE112010001441A5 (de) 2012-08-09

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