WO2016016892A1 - Unité de construction de réchauffeur solaire d'air - Google Patents

Unité de construction de réchauffeur solaire d'air Download PDF

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Publication number
WO2016016892A1
WO2016016892A1 PCT/IL2015/050783 IL2015050783W WO2016016892A1 WO 2016016892 A1 WO2016016892 A1 WO 2016016892A1 IL 2015050783 W IL2015050783 W IL 2015050783W WO 2016016892 A1 WO2016016892 A1 WO 2016016892A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
wall
solar
heated
air heater
Prior art date
Application number
PCT/IL2015/050783
Other languages
English (en)
Inventor
Ofer ZVULUN
Original Assignee
Zvulun Ofer
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 Zvulun Ofer filed Critical Zvulun Ofer
Publication of WO2016016892A1 publication Critical patent/WO2016016892A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/25—Solar heat collectors using working fluids having two or more passages for the same working fluid layered in direction of solar-rays, e.g. having upper circulation channels connected with lower circulation channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
    • 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
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/67—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of roof constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/20—Cleaning; Removing snow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/60—Details of absorbing elements characterised by the structure or construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/60—Thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S2025/6007—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by using form-fitting connection means, e.g. tongue and groove
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02E10/44—Heat exchange systems

Definitions

  • the present invention relates to the field of solar heat. More particularly, the invention relates to a solar air heater construction unit.
  • Solar air heaters of various types are known in the art.
  • Various methods for converting the solar energy into heat and for transferring that heat to treated air are known in the art.
  • Such heaters suffer, typically, from low total efficiency due to a low conversion ratio from sunlight to heat and due to heat transferred to the heater structure instead of to the heated air.
  • a solar air heater is required that has small heat losses during the transfer from sun heat to heated air, with low heat losses to the heater structure and with high heat transfer capacity. Further, the heater is required to form a constriction element that fits into a construction such as a building or hall.
  • US 2010/0186734 discloses a heat absorbing element located between the front and back panel, which is wave-like to increase its surface area and is covered by a dark color to increase the absorption of thermal energy from the sunlight.
  • the air is guided into a first flow passage inside the front translucent or transparent panel so as to be subject to heat from the sunlight, enters a second flow passage in the space between the front panel and the heat absorbing element, and then enters a third flow passage in the space between the back panel and the heat absorbing element.
  • the heat absorbing elements of the prior art are effective in absorbing solar energy, they are nevertheless subject to thermal losses as a significant portion of the absorbed thermal energy is not transferred to the air circulating within the solar heater.
  • the present invention provides a solar air heater, comprising an enclosure comprising a front transparent or translucent sun-facing wall, a rear wall, and side walls between said front and rear walls; an inlet section by which air is introducible to said heater; an outlet section from which air heated by solar energy is dischargeable; and a heating element interposed between said front and rear walls and across which said introduced air is flowable, wherein said heating element comprises a plurality of three dimensional, multi- directionally sloping protrusions made of a thermally insulating material each of which is coated with a layer made of a heat resistant, dark-color material for maximizing transfer of solar energy to said introduced air to increase the temperature of said solar heated air.
  • the heating element is an expanse of identical protrusions, e.g. pyramidal or conical, which protrude from the rear wall and are directed towards the front wall.
  • the rear wall may also be made of the thermally insulating material, e.g. polyurethane foam.
  • the air heater further comprises a flow control element by which the flow rate of the introduced air through the air heater is controllable.
  • the air heater further comprises one or more conduits through which the introduced air flows from the inlet section to the outlet section, wherein each of said one or more conduits is provided with the heating element.
  • the one or more conduits is integral with a wall or roof of a building having a room, or remotely spaced from a room, to be heated by the heated air.
  • the discharged heated air is in heat exchanger relation with a body of water to be heated.
  • Figs. 1 and 2 schematically illustrate a solar air heater construction (SAHC) unit in front view and isometric view, respectively, according to an embodiment of the present invention
  • Fig. 3 is a front view of two attachable segments of the air heater of Fig. 1 ;
  • Fig. 4 is a perspective view of a heating element which is a part of each segment of Fig. 3;
  • Fig. 5 is a schematic illustration of a solar air heater unit, according to another embodiment of the invention.
  • Fig. 6 is a schematic illustration of a building comprising an air heater according to an embodiment of the invention, with two sloping walls;
  • Fig. 7 illustrates another embodiment that comprises two sloping walls, a short wall and a long wall, with a snow flap therebetween;
  • Fig. 8 shows in an expanded view of a section of the embodiment shown in Fig. 7, where the snow flap is in a first position allowing warm air to flow over a heating element in the long wall;
  • Fig. 9 illustrates in expanded view the same embodiment, but the flap is in a second position allowing warm air to flow into a front wall or panel of the solar heater in the long wall
  • Fig. 10 shows another view of the embodiment with the flap in the same position.
  • SAHC unit 10 may comprise inlet section 12, outlet section 14 and heating section 22.
  • Inlet section 12 may be adapted to provide a continuous or intermittent air supply into SAHC unit 10. The air may be taken from the ambient of SAHC unit 10 or from other sources, as described in detail below.
  • Heating section 22 may be formed, generally, as two main walls 24 and 26, substantially, but not necessarily, parallel to each other, enclosing an internal space within which air heated by solar energy is able to circulate.
  • Front sun-facing wall 26 may be made of a transparent or translucent material which is adapted to allow sunlight rays 5 to pass therethrough into the internal space.
  • Rear wall 24 may be made of almost any desired material which provides structural strength to the heating element, which may be placed entirely or partially in abutment with the inner face of rear wall 24.
  • the internal space may be confined also by side walls (not shown, substantially parallel to the plane of the page) and at the other ends by inlet section 12 and outlet section 14.
  • SAHC unit 10 may be built in any desired size. Accordingly SAHC unit 10 may be built in sizes that fit into constructions of buildings as external panels, substituting regular panel sections or roof panel sections.
  • the panel may be mounted on a frame member, or any other interface member associated with a building portion, such as a wall or roof.
  • SAHC unit 10 may be located, with respect to an external reference frame, e.g. the horizon, tilted by a tilting angle a, to set a desired sun ray impingement angle ⁇ .
  • the sun ray impingement angle ⁇ may preferably be set as close as possible to 90° to enhance the heat transfer rate. However, this angle may be subject to other considerations, such as those dictated by the construction of a building with which SAHC unit 10 is a part.
  • the elevation of inlet section 12 may typically be lower than the elevation of outlet section 14 in order to take advantage of the spontaneous flow of heated air inside the internal space. Yet, other configurations may be utilized.
  • the flow of air via SAHC unit 10 may be urged by fan/blower 15, which may be located within or close to outlet section 14, as illustrated, or at other locations on the air-supply or heated-air path.
  • the rate of air flow through SAHC unit 10 may be controlled, for example via control of the rotational speed of fan 15, so as to ensure compliance with one operational parameter such as maximum heat transfer efficiency, constant outlet temperature, maximum temperature inside SAHC unit 10, and the like. It will be noted that by the controlling of the air flow rate via SAHC unit 10, the momentary heat flow into SAHC unit 10 by sun rays 5 may be balanced against the temperature of air provided via inlet section 12, or balanced against the temperature at outlet section 14, or against a temperature setting inside SAHC unit internal space 22C. The specific temperatures at the various locations may be measured using any desired type of temperature sensor, the rotational speed of fan 15 may be controlled using any desired speed control unit, the comparison of the control parameters so as to comply with the control equation may be done using any control unit. However, these aspects and elements of SAHC unit 10 are not part of the invention described in this application.
  • Heat exchangers heated by sunlight rays typically convert the energy received by the sun rays into heat by either exposing to the sun rays to a surface of material painted with a dark color, typically black, or by concentrating the rays using reflectors, lenses and the like onto a fluid conduit, such as a pipe.
  • Such heat exchangers suffer from energy losses when the energy is in the heat phase due to the need to heat the material of which the heat exchanger or the conduit containing the heated fluid are made. The amount of lost heat energy depends on the type of material from which the heater is made, and the nature of the isolation of that heater from its ambient. The higher the specific heat of the material from which the heat exchanger is made, the higher is the heat energy absorbed in bringing the heat exchanger to its working point.
  • SAHC unit 10 employs thermally resistive materials with a high specific heat value and with a very low heat conductivity that form the heat exchanging material underneath the heat
  • rigid polyurethane foam PUR/PIR
  • PUR/PIR rigid polyurethane foam
  • thermally resistive materials such as glass fiber or rock wool.
  • FIG. 3 illustrates two segments 35 and 36 of the rear wall 10 24 of Fig. 1, according to an embodiment of the present invention.
  • Each segment of rear wall 24 is configured at its two sides with a male portion 37 and a female portion 38, respectively, which facilitate coupling with adjacent rear wall segments.
  • a perspective view of one of the segments is shown in Fig. 4.
  • a trapezoidal coupling member 39 may be used to secure together the upper straight edge 33 of each of male portion 37 and female portion 38.
  • the coupling member 39 comprises a body 46, two angled legs 47a and 47b and four spacers 29a, 29b, 29c and 29d.
  • a first leg 47a of coupling member 39, angled relative to the body 46, is placed on a complimentary angled wall of a male portion 37 and a second angled leg 47b is placed on a complimentary
  • a multi-layered front wall is shown to be formed by two rectilinear portions 26 A and 26B, e.g. made of polycarbonate, but it will be appreciated that the front wall may comprise any 25 other number of layers.
  • the four spacers 29a, 29b, 29c and 29d perpendicularly extend from the body 46 of coupling member 39 distal to the legs 47a and 47b, such that there is a gap between the spacers and the legs, defining internal space 42 within which air heated by solar energy is 30 able to circulate. Furthermore, the spacers 29a and 29b, and 29c and 29d, are distanced from each other to allow the front wall to be engaged therebetween.
  • the coupling member 39 and the male- female portions thus together serve as a skeleton for robust modular building of SAHC units 10.
  • the heating section may comprise a heating element 32 that protrudes from the inner face 27 of lower wall 24.
  • Heating element 32 formed as an expanse of identical multi- directionally sloping protrusions 41 may be formed of an insulation material having a very low heat conductivity value, such as rigid polyurethane foam.
  • Protrusions 41 may also be configured with any other shape having a large surface area, such as lamellae, scales, leaves, or an amorphous shape, whether smooth or roughened, for improved sun ray absorption and improved thermal conversion.
  • Lower wall 24 may also be made of the same insulation material from which protrusions 41 are made, for a simplified manufacturing process.
  • this specific form of heating element 32 provides an enlarged area of contact of the three dimensional, multi-directionally sloping protrusions 41 with the heated air flowing thereon. Additionally, the non-linear surface of heating element 32 enlarges the turbulence in the air flowing over heating element 32, thus enhancing the heat transfer value from heating element 32 to the heated air.
  • An exemplary configuration of the protrusions 41 may be such that the angle A defined by the sloping wall of two adjacent protrusions is 30 degrees in any direction, the height of a protrusion above lower wall 24 is 49.5 mm, and the spacing between the narrow upper surface or apex of adjacent protrusions is 55 mm in one direction and 50 mm in another direction.
  • Protrusions 41 are painted or coated with a thin layer of heat resistant, dark paint 43, e.g. black. Paint 43 may be aluminum or copper based.
  • the sun rays that heat the thin layer of dark paint 43 are converted into heat and raise the temperature of the paint layer.
  • the insulation material on which the layer of paint is applied almost completely prevents the heat from being transferred to the back wall of the air heater, thus providing excellent insulation to that direction.
  • the amount of the substance/material, e.g. paint, applied to darkened layer 43 that needs to be heated by the sun rays before the heat is transferred to the air flowing over protrusions 41 is very small. As a result, the heat losses involved in heating the heating element material are minimized and the heat conversion efficiency is enhanced.
  • the temperature of the air circulating within the heating section is therefore to increase to a relatively high value, being dependent upon the thinness of the applied darkened layer 43.
  • Edi s is the heat energy dissipated due to losses of heat conductivity
  • ⁇ is the temperature difference between the temperature inside the air heater and the temperature on the other side of the insulation material
  • H conductivity is the specific heat conductivity of the insulation material
  • Heat transfer efficiency HTEFF is defined as:
  • P is the heat flux
  • Qairout is the flow rate of air out of the air heater
  • Cak is the specific heat of air.
  • Exemplary values include a sun-derived heat influx P sun of 550 J/sec-m ,
  • FIG. 5 is a schematic illustration of a SAHC unit 400, according to another embodiment of the present invention.
  • SAHC unit 400 comprises a heating section 402 with a heating element 432 formed similarly or identically to heating element 32 of Fig. 4 and provided with protrusions configured as small pyramids or cones.
  • Outlet section 410 may be similar or identical to outlet section 14 of Fig. 1.
  • Inlet section 422 may be located at the lower section of SAHC unit 400; however, the air inlet into this section is received via air supply conduit 420 located next to, and preferably under, lower wall 401 of heating section 402.
  • This arrangement enables locating the air inlet 418 close and adjacent to air outlet 41 OA, which enables easy installation of SAHC unit 400 as part of a heating arrangement in which SAHC unit 400 may be used as part of a roof or a wall 450 of a building.
  • the air heated thereby may be circulated into and out of that building via a single opening 452.
  • the temperature of the outer face of lower wall 401 which is typically very close to that of the ambient around SAHC unit 400 due to the high level of thermal insulation provided by heating element 432, even without the additional insulation provided by air supply conduit 420, will be between the temperature of the air supplied to SAHC unit 400 and the ambient temperature, ensuring a very small temperature gradient across lower wall 401 and conduit 420 and, as a result, very low heat energy losses in that path.
  • the front wall 440 which is transparent, may be formed using double glazing as seen in detail 445, providing enhanced thermal insulation through this wall.
  • the heated air SAHC unit 10 or 400 may be used for various goals, such as for heating of the internal space of a home, building or workspace, for the contribution of heated air to heat pumps used for heating swimming pools or other bodies of water, for drying air within spaces such as a home, building or workspace by using means such as a desiccant drum, for use of the heated air for heating external wall or a roof to melt accumulated snow, for use of heated air as a source of heat for cooling purpose by means of an absorption refrigerator, for accumulating heat energy by heating a material with a specific heat value, such as water, for later use, and for any other use and embodiment requiring heated water at working temperatures of 60-95°C.
  • a desiccant drum for use of the heated air for heating external wall or a roof to melt accumulated snow
  • heated air as a source of heat for cooling purpose by means of an absorption refrigerator
  • accumulating heat energy by heating a material with a specific heat value, such as water, for later use, and for any other use and embodiment requiring heated
  • Air heater 480 is integral with a roof of building 500, and is 5 attached to one of its side walls 503 and ceilings 504.
  • Air heater 480 may comprise heated air outlet conduit 493, which may be formed to supply heated air to desired locations inside of building 500.
  • Air heater 400 may further comprise air inlet section 482 through which air received in inlet section 482 from a room of building
  • an air heater such as air heater 400 when installed as 20 part of the roofing of a building, such as building 500, may provide heat insulation between the outside ambient and the inside of building 500 substantially as good as a regular roofing element, while providing heated air into building 500 through outlet conduit 493.
  • air heater 400 may be formed integrally with other parts of a 25 building, for example a single external wall. Air heater 400 may comprises any number of conduits to suit the requirements and needs.
  • Fig. 7 illustrates another embodiment 600 that comprises two sloping walls 687, 688 with a snow flap 660 therebetween.
  • the longer wall 688 has a gentler slope and is better oriented in relation to the sun to heat air.
  • the shorter wall 687 essentially connects the longer wall 688 to the floor of the house 500.
  • the shorter wall 687 also contains air heating means.
  • the orientation of the sun to the house is such that the amount of heating by the shorter wall 687 is significant and may surpass the heating capacity of the longer wall 688 per unit area.
  • the short 5 wall 687 has an important role in improving the heating capacity of the longer wall 688, as will be explained below.
  • each wall 687, 688 comprises a heating element 632 and front panels 645.
  • the heating elements and 10 front panels of the two alls are separated by the flap 660.
  • the flap 660 comprises a handle 662 and a shutter 664.
  • the front panel 645 of the long wall 688 comprises long passages 646 extending through the panel 645 so that heated air from the short wall 687 can pass through the panel 645 to a pipe 694 that extends from the
  • the flap 660 is oriented to direct the shutter 664 to block passage of air from the short wall 687 to the heating element of the long wall 688 and allow that air to entirely pass through the front panel 645. This positioning allows heating of the front panel, which can be very useful to help melt snow from the long wall 688. Snow will generally not accumulate on the short wall 687 because the wall is close to
  • the short wall 687 serves together with the flap 660 to allow releasing snow from the more horizontal long wall.
  • the melting of the snow may allow the long wall to resume heating air, and may also stop the absorbance of heat from the house by the snow.
  • Expanded view Fig. 10 also shows the flap positioned, by control of the lever 662 of the 30 flap 660, to allow air into the front panel.
  • a fan, blower or other means 691 to help draw/direct/distribute the heated air into the house 500.
  • the heated air con vector 691 may help convey the heated air to a heat exchanger or storer 695, that may for example utilize some of the heat to heat some water.

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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)
  • Building Environments (AREA)

Abstract

L'invention concerne un réchauffeur solaire d'air qui comprend une enceinte dotée d'une paroi avant transparente ou translucide orientée vers le soleil, d'une paroi arrière, et de parois latérales entre les parois avant et arrière ; une section d'entrée par laquelle l'air peut être introduit dans ledit réchauffeur d'air ; une section de sortie à partir de laquelle l'air chauffé par l'énergie solaire peut être évacué ; et un élément chauffant intercalé entre les parois avant et arrière et à travers lequel l'air introduit peut s'écouler. L'élément chauffant comprend une pluralité de protubérances tridimensionnelles inclinées dans de multiples directions et constituées d'un matériau thermiquement isolant, chacune d'entre elles étant revêtue d'une couche constituée d'un matériau résistant à la chaleur, de couleur sombre pour maximiser le transfert de l'énergie solaire vers l'air introduit afin d'augmenter la température de l'air chauffé par l'énergie solaire. L'élément chauffant est une étendue de protubérances identiques qui font saillie à partir de la paroi arrière, qui est constituée du matériau thermiquement isolant, et qui sont dirigées vers la paroi avant.
PCT/IL2015/050783 2014-07-31 2015-07-30 Unité de construction de réchauffeur solaire d'air WO2016016892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL23391514 2014-07-31
IL233915 2014-07-31

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WO2016016892A1 true WO2016016892A1 (fr) 2016-02-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997108A (en) * 1975-06-23 1976-12-14 Mason George F Automatic air flow control
US4108374A (en) * 1976-07-29 1978-08-22 Halm Instrument Co., Inc. Heat storage water tank
US20080135092A1 (en) * 2006-12-11 2008-06-12 Sunmodular, Inc. Solar roof tiles with heat exchange
US20110180058A1 (en) * 2011-04-08 2011-07-28 Mackay Cameron R Solar air heating device
US20120222670A1 (en) * 2011-03-04 2012-09-06 John Allan Dolphin Solar Heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997108A (en) * 1975-06-23 1976-12-14 Mason George F Automatic air flow control
US4108374A (en) * 1976-07-29 1978-08-22 Halm Instrument Co., Inc. Heat storage water tank
US20080135092A1 (en) * 2006-12-11 2008-06-12 Sunmodular, Inc. Solar roof tiles with heat exchange
US20120222670A1 (en) * 2011-03-04 2012-09-06 John Allan Dolphin Solar Heater
US20110180058A1 (en) * 2011-04-08 2011-07-28 Mackay Cameron R Solar air heating device

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