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WO2018185646A1 - Cuiseur solaire de type boîte - Google Patents

Cuiseur solaire de type boîte Download PDF

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Publication number
WO2018185646A1
WO2018185646A1 PCT/IB2018/052278 IB2018052278W WO2018185646A1 WO 2018185646 A1 WO2018185646 A1 WO 2018185646A1 IB 2018052278 W IB2018052278 W IB 2018052278W WO 2018185646 A1 WO2018185646 A1 WO 2018185646A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cooker
solar
previous
cooker according
window
Prior art date
Application number
PCT/IB2018/052278
Other languages
English (en)
Inventor
Dasaraden MAUREE
Andreas Schueler
Alexandre DIÉVART
Olivia Valérie Charlotte BOUVARD
Original Assignee
Ecole Polytechnique Federale De Lausanne (Epfl)
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 Ecole Polytechnique Federale De Lausanne (Epfl) filed Critical Ecole Polytechnique Federale De Lausanne (Epfl)
Priority to EP18724613.7A priority Critical patent/EP3607253A1/fr
Publication of WO2018185646A1 publication Critical patent/WO2018185646A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/30—Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • Y02A40/924—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation using renewable energies
    • Y02A40/926—Cooking stoves or furnaces using solar 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
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
    • Y02B40/18—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers using renewables, e.g. solar cooking stoves, furnaces or solar heating
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the present invention relates to cookers that are using the sun as energy source.
  • a solar cooker also called solar oven is a device used to cook food using the thermal energy of the sun.
  • solar cookers equipped with heat storage such as phase change materials or hot water tank
  • concentration solar cookers such as parabolic mirrors or Fresnel lens
  • box-type solar cookers There are three main types of solar cookers: (1) solar cookers equipped with heat storage such as phase change materials or hot water tank, (2) concentration solar cookers such as parabolic mirrors or Fresnel lens and (3) box-type solar cookers.
  • Box-type solar cooker A solar cooker made of a box in any shape, where the inner base presents an absorbent face or inner reflectors and where the top and the lateral faces are made of insulated walls and windows.
  • Window The glazed surface of a box type solar cooker. It can be made of several panes.
  • Mirror Reflector of the box type solar cooker, used to redirect solar irradiation to the window and in this way multiplies the input solar irradiation on the exterior surface of the window.
  • Absorber tray Interior part of a box type solar cooker with high solar absorbance, which receives solar radiation.
  • Insulation Component of the walls of a solar box cooker that reduces the conductive thermal losses through the walls of the oven.
  • insulated wall Component of the walls of a solar box cooker that reduces the conductive thermal losses through the walls of the oven.
  • wall Component of the walls of a solar box cooker that reduces the conductive thermal losses through the walls of the oven.
  • insulated wall Component of the walls of a solar box cooker that reduces the conductive thermal losses through the walls of the oven.
  • Low-e (low-emissivity) coating Microscopically thin metal layer that is deposited on a glazing to help keep heat on the same side of the glazing from which it origlnaied.
  • Total surface of the oven Sum of all the surfaces of the core of a box-type solar cooker, comprising walls and windows [m 2 ].
  • Window-to-wall surface ratio Sum of the surfaces of the glazed surface divided by the total surface of the oven. Exposed surface of the windows: Equivalent surface of windows that receive solar irradiation at a normal incidence and has the same amount of solar irradiation than the real windows of the solar cooker [m 2 ].
  • Orientation factor of the windows Ratio of the exposed surface of the windows divided by the total surface of windows.
  • Solar irradiance radiative power per unit area received by the sun, measured on the ground perpendicular to the incoming sunlight [W/m 2 ].
  • Concentration factor Ratio of the total solar irradiance received by the windows of the oven divided by the total irradiance received by the windows of the oven without reflectors.
  • G-value Effective solar heat gain coefficient of the windows: Ratio of the total radiative energy that enters the oven on the interior side of the window divided by the total radiative energy received by the window on its exterior side. It takes into account the energy transmitted through the window and the part of the energy absorbed by the window that is reemitted on its interior side.
  • Input solar power total radiative power that enters the solar cooker on the interior side of its windows.
  • Effective U-value of walls Effective heat transfer coefficient of the walls of the solar cooker: Total heat flux that passes through the wall surfaces per unit area per degree of temperature difference between hot absorber plate and external air. It comprises the impact of the different layers of the walls especially the insulation and the external surface limit condition of convection exchange. [W/(m 2 . K)]
  • Effective U-value of the windows Effective heat transfer coefficient of the windows of the solar cooker: Total heat flux that passes through the windows per unit area per degree of temperature difference between hot absorber plate and external air. It comprises the impact of the different layers of the composition of the windows, the external and internal surface limit conditions of convection exchange of the windows and the internal surface limit condition of convection exchange of the walls. [W/(m 2 . K)]
  • Effective U-value of the total envelope Effective heat transfer coefficient of the whole envelope of the solar cooker: Total heat flux that passes through the whole envelope of the solar cooker divided by the total surface of the envelope per degree of temperature difference between hot absorber plate and external air. It can be obtained by computing the average of the effective u-value of the window weighted by the window to wall surface ratio and the effective u-value of the walls weighted by the ratio of surfaces of walls over total surface. [W/(m 2 .K)]
  • Temperature difference Temperature difference between the temperature of the hot absorber plate, also called cooking temperature of the solar cooker and the temperature of the external air [K].
  • the insulation of the solar rice cooker made of 25 mm of ceramic fiber results in an effective U-value of 4.1 W/( m 2 . K K) for the walls of the solar cooker which also reflect very low thermal performances.
  • the wooden frame of the glazing of the solar rice cooker provokes shadowing directly on the cooking pot which decreases cooking temperature.
  • Noel Bourke conceived a box-type solar cooker with a lateral inclined window for a remote heat collector [5].
  • the purpose of its second window is to heat the absorber tray of the oven in a second chamber, called remote heat collector and linked to the cooking chamber.
  • the windows of the solar cooker with remote heat collector proposed by Bourke do not have high thermal performances with low-emissivity coating and its mirrors are not efficiently disposed.
  • Glazing with high thermal performances and low-emissivity coating is a well-known feature of the building field and is presented in most of the building physics classes [8].
  • AGC G LASS EU ROPE patented a coated glazing for solar protection and proposed the use of this glazing in oven doors [9].
  • the main purpose of this glazing is to be installed in building fagade with high exposure to sun irradiation. Its coating reduces solar transmittance to avoid overheating of buildings. This function is completely different than the function of a glazing with low-emissivity coating, which is used to enhance greenhouse effect.
  • the coating used in this solar protection glazing increases the solar reflectance of the glazing. That is why it can be appropriate for a household oven, because it will reflect the heat of the oven within the oven. However, it is not adapted for solar cookers because it reduces solar input power, by reflecting exterior solar radiation to the exterior of the oven.
  • the main purpose of a solar box cooker is to heat a cooking pot placed inside it using only solar irradiation as power source. Sunlight is concentrated by several mirrors, passes through the window and heats the absorber tray and the pot inside the oven. Convection exchanges at the surface of the absorber tray and the pot brings the air inside the oven to a higher temperature, which decrease the thermal losses of the pot, and therefore allow the pot to reach a temperature suitable for cooking.
  • Heat is also radiated by the surfaces of the absorber tray and the pot and reradiated back to the oven by the window. Heat is also conducted through the different walls and the window of the oven.
  • the greenhouse effect provoked by the window and, more generally, the global thermal performance of the window, is crucial for the performances of the oven. Indeed, in most solar box cookers designs, a significant part of the thermal losses are located through the window, which presents low thermal performances.
  • a single glazing generally has a heat transfer coefficient (U-value) between 4.5 and 5.7 W/( m 2 . K K) and a standard double glazing has a heat transfer coefficient around 3.3 W/( m 2 .K K).
  • Glazing with higher thermal performances has already been developed for buildings.
  • Table 1 a double glazing where the interior surface of one of the single pane glass has a low- emissivity coating, can reach a U-value of 1.8 W/( m 2 .K K).
  • Even higher thermal performances of the glazing can be obtained with other modern glazing technology features (Argon filling, triple glazing).
  • a comparative test between a solar box cooker with a standard double glazing and a solar cooker with a low-emissivity coated double glazing has been performed by the inventors. The two ovens had strictly identical designs, except for the glazing and where placed at the same time in the same configuration.
  • the invention consists in a solar cooker with a core comprising at least one insulating wall and at least one window having a glazing on which is deposited a low-e coating, said window(s) being oriented along several directions.
  • the several directions can be obtained if the windows is curved, at least partially, to form e.g. a spherical portion.
  • the low-e coating has a thermal emissivity below 0.2.
  • the window-to-wall surface ratio is higher than 0.3
  • Other preferred embodiments of the invention are defined below in the description and in the dependent claims. The invention will be better understood with a detailed description illustrated by the following figures:
  • Figure 1 shows the evolution of the temperature of absorber trays of a solar box cooker with a standard double glazing (solar cooker A) and a solar cooker equipped with low-emissivity coated double glazing (solar cooker B).
  • Figure 2 shows an example of a solar cooker according to the invention
  • Figure 3 shows the solar cooker of figure 2 with different positions of the sun rays
  • Figure 4 shows a folding procedure of a solar cooker according to the invention
  • Figure 5 shows the effect of an anti-reflective coating simulated on a single pane glass.
  • Figure 6 shows an assembly details of the edge between two windows which have a different orientation
  • FIG. 7 shows an assembly details of the edge between two walls which have a different orientation
  • Figure 8 represents the external shading systems of the solar cooker
  • Figure 9 illustrates a removable Heat Storage Element (RHSE)
  • Figure 10 shows some examples of solar cookers according to the invention
  • the thermal characteristics of the walls and the windows of solar box cookers 1, 2 and 3 are similar to the thermal characteristics of most of the previous designs of solar box cookers. They have a standard single glazing (cooker 1) or a standard double glazing (cooker 2 and 3). Their insulation is equivalent to 40 mm of rock wool (cooker 1 and 3) or 50 mm of sheep wool (cooker 2).
  • Solar box cooker 4 and 5 have the same body has solar cooker 1 and 3. Their glazing has been changed to higher thermal performance glazing, with a low-emissivity coated double glazing for solar cooker 4 and a low-emissivity coated double glazing with Argon filling for solar cooker 5.
  • the thermal performance gain between solar cookers 4 and 5 and solar cookers 1 and 3 reflects the gains obtained by upgrading the thermal performance of the glazing without changing the geometry or the insulation of the walls of the solar cookers. For example, by improving solar cooker 3, with a low- emissivity coated double glazing with Argon filling, one gets solar cooker 5, and a 32% gain in the temperature difference can be obtained.
  • Solar box cookers ranging from 1 to 10 have a window to wall surface ratio of 0.25.
  • Solar box cookers 11 to 20 have respectively the same characteristics with a window to wall surface ratio increased to 0.45.
  • the benefits of increasing the window to wall surface ratio of a solar box cooker can be quantified.
  • Solar cooker 5 has the same wall composition as solar cooker 3, but a glazing with higher thermal performances.
  • a temperature difference gain of 39 % is obtained for the initial solar cooker 3 and a temperature difference gain of 73 % is obtained for the initial solar cooker 5.
  • This gap in the performance gains between those solar cookers reflects the synergy between a higher thermal performance glazing and a design with a higher window to wall surface ratio.
  • the idea of increasing the window to wall surface ratio is relevant because of the use of a high thermal performance glazing.
  • the shape of a solar cooker is more favorable to the installation of multiple mirrors to improve the concentration of the sun irradiation because there are more windows and some of them have different orientations.
  • the thermal performances of the glazing of solar cooker 5 can be improved with a triple glazing, as in solar cookers 9 and 10 of Table 2.
  • high thermal performance glazing it also becomes relevant to use high thermal performance insulation materials for the insulation of the walls, as in solar cookers 7, 8, 9 and 10 of Table 2.
  • using high thermal performance insulation materials in the walls is not as appropriate because a more significant part of the thermal losses are located through the glazing. Therefore, it would result in lower gains than with a design of solar box cooker with high thermal performance glazing.
  • the back of the body of the oven can be a corner formed by three different walls.
  • a wider range of orientations of the sun are covered by the windows in the front part of the solar cooker.
  • a concentration system composed of multiple mirrors disposed to form some angles, to concentrate the irradiation of the sun on the different windows of the oven.
  • this geometry with several window orientations and mirrors disposed in angle to redirect sunlight to those windows also help the user to track the sun.
  • a baking period can last several hours, therefore the altitude angle and the azimuth angle of the change during the use of the oven.
  • this concentration system a wider range of solar ray orientations are successfully redirected to the oven.
  • Figure3 when the azimuth and altitude angles of the sun vary during the cooking period (positions a to d), the solar irradiation is redirected by different mirrors with a simple or a double reflection, to the oven.
  • the angles formed by the different mirrors are between 60 and 120 degrees and can be different around the oven. Those angles can be adapted in the different embodiments of the invention, depending on the targeted cooking period, latitude of use, climate of use and season of use. For example, with an angle close to 120 degrees between two mirrors redirecting solar irradiation to the superior glazing of the oven, a longer efficient baking time is provided because there will be a longer time (greater solar azimuth angle variation) between the situations (a) and (d) displayed on Figure 3. With an angle close to 60 degrees, between two of the lateral mirrors, the use of the oven is more efficient with a low altitude angle of the sun, like in winter or in places with high latitudes.
  • That disposition of the concentration system brings the possibility to fold the mirrors on the core of the oven to form a shape easier to carry and store than the shape of the oven in use.
  • the folding of the mirrors also protects the glazing and the reflecting surfaces of the mirrors against dust and exterior aggressions. It can also give, the oven another function, such as a chair or a storage box for example, and a more elegant design when it is not active. This operation is also crucial to decrease the exposure of the oven to the wind if it is stored outside.
  • the folding process is detailed in Figure 4.
  • the windows are made with high thermal performance glazing. Each window comprises two or more panes and at least one of their surfaces is coated and has an emissivity below 0.2.
  • high thermal performance window compositions are described in Table 1, along with their thermal characteristics. In the invention the windows have a U-value below 1.6 W/( m 2 . K K).
  • the windows are disposed in a way that aims at increasing the exposure to solar irradiation during the cooking period. Therefore, the windows can be curved or have several orientations. In a preferred embodiment of the invention (see e.g. figure 2), one lateral window is curved to cover two sides of the solar cooker and another one is flat and covers the top of the oven.
  • the windows can be made of polymer to decrease the weight of the oven, to improve the resistance of the windows against the impacts and to simplify the fabrication of curved or folded windows.
  • the interior pane can be made of glass for better resistance at high temperature and the other panes made of polymer.
  • an anti-reflective coating improves solar transmittance for a large set of angles of incidence.
  • Figure 3 in a design of solar cooker with a high window to wall surface ratio, several window orientations and no manual tracking required during the cooking period, solar irradiation hits the windows with multiple angle of incidence. Therefore, the use of an anti-reflective coating can have a very positive effect.
  • the anti-reflective coating of the invention is chosen in a way that aim at having: Tsol(0°) - Tsol(60°) ⁇ 15% for at least one of the single pane. In most of the previous designs of solar cookers, the joint around the window acts as a thermal bridge that decreases the thermal performances of the oven.
  • Vacuum insulation and aerogel are high performance insulation technics that are not yet developed enough to be adopted in the buildings. However, they can be appropriate for the smaller scale of the solar cookers.
  • the walls of the invention are insulated with high thermal performance materials, such as aerogel or vacuum insulation. At least one of the walls has a U-value below 0.8 W/( m 2 .K K).
  • solar cookers 7, 8, 9 and 10 have walls insulated with vacuum insulation.
  • Solar cooker 7 and 8 have the same characteristics as solar cooker 6, with the exception of the insulation which is a standard insulation of 40 mm of rock wool for solar cooker 6 and 15 mm or 25 mm of vacuum insulation for solar cookers 7 and 8, respectively.
  • the gains in the thermal performances for those solar cookers are respectively 56% and 100%.
  • Solar cooker 9 and 10 are the same solar cookers with a triple glazing, with argon filling and low- emissivity coating on two surfaces.
  • solar cookers 19 and 20 equivalent to solar cookers 9 and 10 with a high window to wall surface ratio, temperature difference between cooking temperature and ambient temperature of 245 and 296 degrees can be reached.
  • solar cookers it is even possible to cook during a cloudy day, when solar irradiation is two times lower than during a sunny day as a temperature difference of 122 and 148 degrees can be reached.
  • the insulation can be realized with panels (a). It can also be a multilayered assembly of several panels where the joints of the different layers are not aligned to avoid the formation of a straight thermal bridge (b).
  • the insulation can also have a more complex shape than panels. It can be continuous with a curved or angular design (c).
  • the insulation can be sealed with an external protective layer that covers the whole oven or only the edges (d). This external protective layer can also be used with a multilayered insulation.
  • the interior surfaces of the walls can comprise one or more interior reflectors that redirect solar irradiation to the pot. They can also comprise an absorber tray covered with a high thermal conductive layer that diffuses heat in the several inner surfaces of the solar cooker, and a second layer with a high solar absorbance that store heat coming from solar irradiation.
  • the absorber can comprise fins to enhance the thermal exchanges between the absorber and the air inside the oven.
  • a door is located in the walls of the solar cooker to access the cooking pot.
  • the solar cooker can comprise temperature sensor and a data acquisition unit.
  • This unit can comprise a micro camera filming the cooking pot.
  • This unit can have a cable or wireless connection to a data analysis unit or the smartphone of the user.
  • This unit can be linked to an application on the smartphone of the user that may help the user to set up the orientation of the solar cooker and of its mirrors at the initiation of the cooking period, display information such as cooking temperature, cooking pot visualization or estimated remaining cooking time and warn the user at the end of the cooking time.
  • This unit can comprise an electronic connector, for example an USB port, which can be used to connect or charge a mobile phone or other electronic device.
  • This whole electronic system is powered by a solar photovoltaic panel, a battery or a thermoelectric generator which uses the heat of the cooking chamber of the oven to produce electricity.
  • This unit can be linked to an automatic window shade to control the cooking temperature of the solar cooker by adapting the aperture of the external shadings in order to stay at the desired cooking temperature.
  • the shading system is composed of external shadings placed in front of the windows and which can be rolled down or folded into the walls of the solar cooker. This system is described in Figure 8. It can be composed of lateral shadings only (a), roller blinds on the lateral and superior surfaces (b), a single shading on the superior surface that is folded and unfolded the same way as a fan (c) or a combination of a shading fan on the superior glazed surface and roller blinds on the side windows (d)
  • a removable heat storage element adapted to the shape of the oven can be placed inside the solar cooker in direct contact with the absorber tray.
  • the removable heat storage element is heated inside the solar cooker.
  • This element comprises a specific material with a thermal inertia superior to 0.25 kJ/K. It can be a cooking stone, a concrete plate or a close recipient which contains a phase change material. It has sufficient thermal inertia to store enough energy to grill meat outside the oven. This cooking stone can also be used to store heat and be able to cook at night with the solar cooker.
  • elements with different thermal inertia can be used in the oven, or several elements can be assembled to form an element with a higher thermal inertia.
  • the removable heat storage element can be placed and taken out of the oven with a removable handle.
  • the element can be placed on an appropriate tray which protect the table from the heat of the cooking stone and can comprise one or several emplacements to dispose meat, side food, condiments or cooking utensils.
  • the emplacement of the removable heat storage element on the tray can comprise an upper layer with low thermal conductivity or several minimalist supports and a specific layer with high thermal reflectivity in order to reduce heat losses from the heat storage element to the tray and to improve the protection of the table.
  • RHSE removable heat storage element
  • figure 9 (a) shows RHSE placed in the solar cooker for heating
  • figure 9 (b) shows a RHSE with more thermal inertia and longer cooking time place in the solar cooker for heating
  • figure 9(c) illustrates the placement of the RHSE in the solar cooker with a removable handle
  • figure 9 (d) shows the displacement of the RHSE with the removable handle
  • figure 9 (e) shows a RHSE placed on an adapted tray to protect the table during cooking.
  • Embodiment (a) is the preferred embodiment, composed of one lateral curved glazing and one superior plane glazing.
  • Embodiment (b) has a shape close to a cube or a rectangular parallepiped. It has 3 different plane windows.
  • Embodiment (c) has one single curved glazing, with two axis of curvature.
  • Embodiment (d) has 3 curved windows.
  • the windows of embodiments (e), (f) and (g) have shapes close to polyhedrons.
  • Embodiment (h) has a shape close to a distorted parallepiped with tilted windows.
  • the general geometry and composition of the invention are adapted according to the targeted cooking period, latitude of use, climate of use and season of use. Indeed, the course of the sun and the external temperature and wind condition are not the same when those different conditions vary. Thus, the positioning of the windows and the geometry can be changed to match the course of the sun.
  • the general shape, number of edges and composition of the walls can be adapted to optimize the performances of the solar cooker according to the external conditions.
  • Patent application US 2010/0139648 [6] Patent US 5 195 504

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

La présente invention concerne un cuiseur solaire comportant un noyau comprenant au moins une paroi isolante et au moins une fenêtre équipée d'un vitrage sur lequel est déposé un revêtement à faible émissivité, caractérisé en ce que ladite fenêtre est orientée selon plusieurs directions.
PCT/IB2018/052278 2017-04-05 2018-04-03 Cuiseur solaire de type boîte WO2018185646A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18724613.7A EP3607253A1 (fr) 2017-04-05 2018-04-03 Cuiseur solaire de type boîte

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IB2017051952 2017-04-05
IBPCT/IB2017/051952 2017-04-05

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WO2018185646A1 true WO2018185646A1 (fr) 2018-10-11

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Citations (14)

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US4077391A (en) * 1976-12-20 1978-03-07 Way Jr Lee V Portable solar cooker and the solar panel used therein
FR2640031A3 (fr) * 1988-12-05 1990-06-08 Tournier Pierre Capteur solaire a multifonctions domestiques
US5195504A (en) 1990-10-29 1993-03-23 Bert Lane Portable solar oven
WO1994002313A1 (fr) * 1992-07-28 1994-02-03 Day Chahroudi Structure d'isolation thermique traversee par la lumiere
GB2286008A (en) * 1994-01-26 1995-08-02 Pilkington Glass Ltd Argon filled double glazing unit with low emissivity coatings
ZA200006680B (en) 1999-11-16 2001-06-18 Joan Beall Box-type solar cooker.
US20040248051A1 (en) * 2003-06-04 2004-12-09 Romijn Maarten Martinus Method and apparatus for achieving worldwide reduction of carbon dioxide emissions and deforestation
US20060090834A1 (en) * 2004-10-28 2006-05-04 Film Technologies International, Inc. Method of manufacturing an impact resistant and insulated glass unit composite with solar control and low-E coatings
US20090133688A1 (en) * 2007-11-01 2009-05-28 La William H T Solar cooking pot
US20100139648A1 (en) 2008-12-05 2010-06-10 Noel Bourke Cooking device
TW201348667A (zh) * 2012-05-29 2013-12-01 chao-sheng Wang 太陽能／光能加熱焗／爐
US20140230869A1 (en) * 2013-02-19 2014-08-21 Gmz Energy, Inc. Self-Powered Boiler Using Thermoelectric Generator
CN204363800U (zh) 2015-01-28 2015-06-03 安徽工业大学 一种太阳能烘烤箱用反光装置
US20160145151A1 (en) 2013-06-27 2016-05-26 Agc Glass Europe Solar protection glazing

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077391A (en) * 1976-12-20 1978-03-07 Way Jr Lee V Portable solar cooker and the solar panel used therein
FR2640031A3 (fr) * 1988-12-05 1990-06-08 Tournier Pierre Capteur solaire a multifonctions domestiques
US5195504A (en) 1990-10-29 1993-03-23 Bert Lane Portable solar oven
WO1994002313A1 (fr) * 1992-07-28 1994-02-03 Day Chahroudi Structure d'isolation thermique traversee par la lumiere
GB2286008A (en) * 1994-01-26 1995-08-02 Pilkington Glass Ltd Argon filled double glazing unit with low emissivity coatings
ZA200006680B (en) 1999-11-16 2001-06-18 Joan Beall Box-type solar cooker.
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