CA2719496A1 - Condensation system for dehumidification and desalination - Google Patents
Condensation system for dehumidification and desalination Download PDFInfo
- Publication number
- CA2719496A1 CA2719496A1 CA2719496A CA2719496A CA2719496A1 CA 2719496 A1 CA2719496 A1 CA 2719496A1 CA 2719496 A CA2719496 A CA 2719496A CA 2719496 A CA2719496 A CA 2719496A CA 2719496 A1 CA2719496 A1 CA 2719496A1
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- Prior art keywords
- condensation
- coolant
- panel
- enclosure
- humid air
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- Legal status (The legal status 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 status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/28—Methods or installations for obtaining or collecting drinking water or tap water from humid air
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/243—Collecting solar energy
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G2009/248—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like with distillation of water
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- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
-
- 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
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
Abstract
A condensation system (10) comprises an enclosure (14) having a roof structure (20) including two spaced-apart layers (28) of translucent material adapted to let sunlight therethrough and defining a sealed cavity (30) therebetween. A foaming system is provided for temporarily filling the cavity (30) with insulating foam (32). A condensation panel (34) is exposed to the humid air in the enclosure (14) and is cooled down by a coolant system (40) to cause the humid air to condensate on the panel (34). A collection system (54) is provided to collect the water condensing from the humid air at the surface of the panel (34).
Description
CONDENSATION SYSTEM FOR DEHUMIDIFICATION AND DESALINATION
FIELD OF THE INVENTION
The present invention relates to condensation systems, and more particularly to dehumidification and desalination systems.
BACKGROUND ART
In a greenhouse, it is desirable to control the interior environment, and in particular the humidity level, so as to reduce energy consumption and increase productivity of plants.
Too much humidity within the greenhouse usually causes fungus formation and/or condensation of the water vapor on the light transmitting surfaces (e.g. translucent roof), with the condensed water causing reduced light penetration through these surfaces and potentially damaging dripping onto the plants. In order to control the humidity, greenhouses are often ventilated, which during cold weather generally wastes energy as well as causes variations in the interior temperature which are usually unhealthy for the plants, and during summer usually allows the entry of pests, exterior spores, diseases and/or unwanted pollen. Furthermore, the amount of wasted water through the evaporation process of healthy plants is costly; thus water recovery of pure clean water further reduces the costs of operation.
Few systems are specifically designed to function in today's large greenhouses. Examples of systems which may be used in a greenhouse include systems devised to condense water vapor found in the air of an enclosure (e.g. a greenhouse) where the water vapor is condensed on wall and/or roof surfaces of the enclosure and the resulting condensate is collected. For example, it is known to have a greenhouse enclosed by a translucent impermeable fabric shell with water sprayed on the outside of the fabric shell to cool it such as to enhance condensation of water vapor within the greenhouse on the inside surface of the fabric shell. However, such a structure generally does not efficiently condense water due to the relatively poor conductivity of the translucent fabric, and the heat of the greenhouse is usually rapidly lost during the night and during daytime periods of reduced sunlight, thus limiting the amount of water that can be condensed. In addition, the spraying of water on the exterior surface of the translucent fabric or membrane usually tends to leave evaporative marks on the fabric, thus reducing the translucence thereof. Moreover, the water spray may undesirably reduce the amount of light let through the translucent fabric, thus providing unwanted shade on the plants within the greenhouse.
Accordingly, improvements are desirable.
SUMMARY OF INVENTION
It is therefore an aim of the present invention to provide an improved condensation system.
Therefore, in accordance with a general aspect of the application, there is provided a condensation system comprising: an enclosure containing humid air, the enclosure being at least partly defined by a roof structure, the roof structure including a covering member having two spaced apart layers of translucent material adapted to let sunlight therethrough and defining a sealed cavity therebetween;a foaming system temporarily filling the cavity with foam to increase insulating properties of the covering member and removing the foam to let sunlight through the covering member during given periods to heat the enclosure; an angled condensation panel made of a heat conducting material and exposed to the humid air in the enclosure; a coolant system for cooling the condensation panel to a temperature lower than a temperature of the humid air; and a collection system collecting water condensing from the humid air on an inner surface of the condensation panel.
In accordance with another general aspect of the application, there is provided a condensation system comprising: a humid air enclosure at least partly defined by a roof structure having a portion made of translucent material adapted to let sunlight therethrough to heat the enclosure; a condensation panel made of a heat conducting material, the condensation panel being exposed to humid air contained in the enclosure, the condensation panel being disposed such that a flow of sunlight through the translucent material within the enclosure is at least substantially free of obstruction from the condensation panel; a coolant system creating a flow of coolant over a first surface of the condensation panel to bring the condensation panel to a temperature lower than a temperature of the humid air; and a condensate collection system collecting water condensing from the humid air on a second surface of the condensation panel opposite the first surface thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference will now be made to the accompanying drawings, showing by way of illustration a particular embodiment of the present invention and in which:
Fig. 1 is a front, cross-sectional view of a greenhouse with a condensation system used as a dehumidifying system in accordance with a particular embodiment of the present invention;
Fig. 2 is a side, cross-sectional view of part of the greenhouse of Fig. 1; and Fig. 3 is a side cross-sectional view of a condensation system used as a desalination system in accordance with an alternate embodiment of the present invention.
DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS
Referring now to Figs. 1-2, a condensation system 10 according to a particular embodiment of the present invention is shown. In this embodiment, the condensation system 10 is used as a dehumidification system in a greenhouse 12.
The greenhouse 12 includes a enclosure or enclosure 14 for receiving plants therein and containing humid air, the enclosure 14 being defined by a front wall (not visible in the Figures), a rear wall 16 and opposed side walls 18 (see Fig.
FIELD OF THE INVENTION
The present invention relates to condensation systems, and more particularly to dehumidification and desalination systems.
BACKGROUND ART
In a greenhouse, it is desirable to control the interior environment, and in particular the humidity level, so as to reduce energy consumption and increase productivity of plants.
Too much humidity within the greenhouse usually causes fungus formation and/or condensation of the water vapor on the light transmitting surfaces (e.g. translucent roof), with the condensed water causing reduced light penetration through these surfaces and potentially damaging dripping onto the plants. In order to control the humidity, greenhouses are often ventilated, which during cold weather generally wastes energy as well as causes variations in the interior temperature which are usually unhealthy for the plants, and during summer usually allows the entry of pests, exterior spores, diseases and/or unwanted pollen. Furthermore, the amount of wasted water through the evaporation process of healthy plants is costly; thus water recovery of pure clean water further reduces the costs of operation.
Few systems are specifically designed to function in today's large greenhouses. Examples of systems which may be used in a greenhouse include systems devised to condense water vapor found in the air of an enclosure (e.g. a greenhouse) where the water vapor is condensed on wall and/or roof surfaces of the enclosure and the resulting condensate is collected. For example, it is known to have a greenhouse enclosed by a translucent impermeable fabric shell with water sprayed on the outside of the fabric shell to cool it such as to enhance condensation of water vapor within the greenhouse on the inside surface of the fabric shell. However, such a structure generally does not efficiently condense water due to the relatively poor conductivity of the translucent fabric, and the heat of the greenhouse is usually rapidly lost during the night and during daytime periods of reduced sunlight, thus limiting the amount of water that can be condensed. In addition, the spraying of water on the exterior surface of the translucent fabric or membrane usually tends to leave evaporative marks on the fabric, thus reducing the translucence thereof. Moreover, the water spray may undesirably reduce the amount of light let through the translucent fabric, thus providing unwanted shade on the plants within the greenhouse.
Accordingly, improvements are desirable.
SUMMARY OF INVENTION
It is therefore an aim of the present invention to provide an improved condensation system.
Therefore, in accordance with a general aspect of the application, there is provided a condensation system comprising: an enclosure containing humid air, the enclosure being at least partly defined by a roof structure, the roof structure including a covering member having two spaced apart layers of translucent material adapted to let sunlight therethrough and defining a sealed cavity therebetween;a foaming system temporarily filling the cavity with foam to increase insulating properties of the covering member and removing the foam to let sunlight through the covering member during given periods to heat the enclosure; an angled condensation panel made of a heat conducting material and exposed to the humid air in the enclosure; a coolant system for cooling the condensation panel to a temperature lower than a temperature of the humid air; and a collection system collecting water condensing from the humid air on an inner surface of the condensation panel.
In accordance with another general aspect of the application, there is provided a condensation system comprising: a humid air enclosure at least partly defined by a roof structure having a portion made of translucent material adapted to let sunlight therethrough to heat the enclosure; a condensation panel made of a heat conducting material, the condensation panel being exposed to humid air contained in the enclosure, the condensation panel being disposed such that a flow of sunlight through the translucent material within the enclosure is at least substantially free of obstruction from the condensation panel; a coolant system creating a flow of coolant over a first surface of the condensation panel to bring the condensation panel to a temperature lower than a temperature of the humid air; and a condensate collection system collecting water condensing from the humid air on a second surface of the condensation panel opposite the first surface thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference will now be made to the accompanying drawings, showing by way of illustration a particular embodiment of the present invention and in which:
Fig. 1 is a front, cross-sectional view of a greenhouse with a condensation system used as a dehumidifying system in accordance with a particular embodiment of the present invention;
Fig. 2 is a side, cross-sectional view of part of the greenhouse of Fig. 1; and Fig. 3 is a side cross-sectional view of a condensation system used as a desalination system in accordance with an alternate embodiment of the present invention.
DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS
Referring now to Figs. 1-2, a condensation system 10 according to a particular embodiment of the present invention is shown. In this embodiment, the condensation system 10 is used as a dehumidification system in a greenhouse 12.
The greenhouse 12 includes a enclosure or enclosure 14 for receiving plants therein and containing humid air, the enclosure 14 being defined by a front wall (not visible in the Figures), a rear wall 16 and opposed side walls 18 (see Fig.
2) extending from a ground surface and sealingly interconnected to define a perimeter, and a roof structure 20 sealingly connected to a top of the walls 16, 18.
The roof structure 20 is part of the condensation system and comprises a plurality of spaced apart arches 22 extending between the top of the side walls 18 and interconnected at their apex by a longitudinal top truss 24, and a membrane or covering member 26 stretched over the arches and truss 22, 24 and retained thereon.
The covering member 26 is made of a material permeable to light, such as to allow solar energy to heat the enclosure therethrough. In a particular embodiment, the covering member 26 is made of polyethylene sheet material. Alternately, the covering member 26 can be made of glass, polycarbonate, or another adequate type of plastic. In a particular embodiment the walls 16, 18 are made of a similar material, supported over an adequate framework of trusses, arches and/or posts.
In the embodiment shown, the covering member 26 comprises two spaced apart layers 28 of material permeable to light, defining a sealed cavity 30 therebetween, with the layers 28 being maintained in spaced apart relationship through low pressure air received within the cavity 30. In a particular embodiment, the cavity 30 is temporarily filled with an appropriate type of foam 32 (only partially illustrated in the Figures) during nighttime and/or during any other time where heat needs to be retained within the enclosure. Examples of appropriate foams and foaming systems are shown in U.S. Patent No. 4,562,674 issued Jan. 7, 1986 to Nelson, U.S. Patent No.
6,575,234 issued Jun. 10, 2003 to Nelson, and PCT application No. WO 2005/085541 from Amar et al. published Sept. 15, 2005, the specifications of all of which are incorporated herein by reference. Other adequate types of foams and foaming systems can also alternately be used.
The condensation system 10 also includes a condensation panel 34, which extends within the enclosure 14 in proximity of the rear wall 16 but spaced apart therefrom. The condensation panel 34 extends from the top of the side walls 18 to the top truss 24 and is angled such that its top edge 36 extends inwardly of its bottom edge 38. Alternately the condensation panel 34 can extend below the top of the side walls 18 if a larger condensation surface is required. The condensation panel 34 is made of any adequate heat conductive material, such as for example anodized aluminum, copper, iron or another appropriate type of metal. In a particular embodiment, the condensation panel 34 includes an optional enhancing surface coating increasing its conductivity. The condensation panel 34 is also preferably corrugated with grooves and ridges such as have an increased panel surface for a given panel width. The size of the grooves and ridges is preferably selected based on the conductivity of the panel and/or on the type and flow of coolant. In a particular embodiment, the grooves and ridges are almost parallel to the ground, extending at a slight angle to form a descending slope directed toward a return conduit 58 to be described further below. The number and size of the grooves and ridges is varied to obtain a desired condensation surface of the panel 34.
The condensation system 10 further includes a coolant spraying assembly 40. The coolant spraying assembly 40 comprises a coolant reservoir 42, which in a particular embodiment is located underground to maintain a low temperature of the coolant, a main conduit 44 extending from the coolant reservoir 42 and connected to a plurality of secondary conduits 46 located in proximity of an outer surface 48 of the condensation panel 34, and a plurality of spraying nozzles 50 in fluid communication with the secondary conduits 46. The coolant spraying assembly 40 also includes a pump 52, which pumps the coolant from the coolant reservoir 42, through the conduits 44, 46 and to the spraying nozzles 50. The spraying nozzles 50 are located and oriented to spray the coolant on the outer surface 48 of the condensation panel 34.
The condensation system 10 further includes a coolant collection system 54, comprising a coolant gutter 56 (see Fig.
2) which extends along the bottom edge 38 of the condensation panel 34 and is placed such that the coolant sprayed onto the outer surface 48 of the condensation panel 34 and flowing downwardly along that surface falls within the coolant gutter 56. The coolant collection system 54 further comprises a coolant return conduit 58 in fluid communication with the coolant gutter 56 and returning the collected coolant to the coolant reservoir 42 by gravity.
The condensation system 10 shown is particularly adapted for colder climates, where the coolant, if unprotected from the outside environment, could potentially freeze in the spraying nozzles 50 and/or on the condensation panel 34. In an alternate embodiment particularly suitable for warmer climates, the condensation panel 34 defines an exterior surface of the roof structure 20, i.e. the outer surface 48 of the condensation panel 34 and at least the spraying nozzles 50 are located outside of the enclosure 14.
In a particular embodiment, the coolant is cool tap water. Alternate coolants that can be used include sea, lake or pond water (in that instance the main conduit 44 and the coolant return conduit 58 can be in direct communication with the sea, lake or pond and the coolant reservoir 42 can thus be omitted), and glycol. Glycol is particularly useful in a closed circuit system to maximize the useful time of the coolant as well as in freezing conditions.
In a particular embodiment, the pumped coolant goes through a refrigeration system (not shown) before being sent to the spraying nozzles 50 in order to increase the cooling of the condensation panel 34. Such a refrigeration system can include for example propane or natural gas-driven chillers, or solar powered condensers and cooling towers.
The condensation system 10 further includes a condensate collection system 60, comprising a condensate gutter 62 which extends along the bottom edge 38 of the condensation panel 34 and is placed such that liquid flowing downwardly along an inner surface 64 of the condensation panel 34 falls within the condensate gutter 62, and a condensate return conduit 66 in fluid communication with the condensate gutter 62 and directing the condensate to a condensate reservoir 68 by gravity.
The roof structure 20 is part of the condensation system and comprises a plurality of spaced apart arches 22 extending between the top of the side walls 18 and interconnected at their apex by a longitudinal top truss 24, and a membrane or covering member 26 stretched over the arches and truss 22, 24 and retained thereon.
The covering member 26 is made of a material permeable to light, such as to allow solar energy to heat the enclosure therethrough. In a particular embodiment, the covering member 26 is made of polyethylene sheet material. Alternately, the covering member 26 can be made of glass, polycarbonate, or another adequate type of plastic. In a particular embodiment the walls 16, 18 are made of a similar material, supported over an adequate framework of trusses, arches and/or posts.
In the embodiment shown, the covering member 26 comprises two spaced apart layers 28 of material permeable to light, defining a sealed cavity 30 therebetween, with the layers 28 being maintained in spaced apart relationship through low pressure air received within the cavity 30. In a particular embodiment, the cavity 30 is temporarily filled with an appropriate type of foam 32 (only partially illustrated in the Figures) during nighttime and/or during any other time where heat needs to be retained within the enclosure. Examples of appropriate foams and foaming systems are shown in U.S. Patent No. 4,562,674 issued Jan. 7, 1986 to Nelson, U.S. Patent No.
6,575,234 issued Jun. 10, 2003 to Nelson, and PCT application No. WO 2005/085541 from Amar et al. published Sept. 15, 2005, the specifications of all of which are incorporated herein by reference. Other adequate types of foams and foaming systems can also alternately be used.
The condensation system 10 also includes a condensation panel 34, which extends within the enclosure 14 in proximity of the rear wall 16 but spaced apart therefrom. The condensation panel 34 extends from the top of the side walls 18 to the top truss 24 and is angled such that its top edge 36 extends inwardly of its bottom edge 38. Alternately the condensation panel 34 can extend below the top of the side walls 18 if a larger condensation surface is required. The condensation panel 34 is made of any adequate heat conductive material, such as for example anodized aluminum, copper, iron or another appropriate type of metal. In a particular embodiment, the condensation panel 34 includes an optional enhancing surface coating increasing its conductivity. The condensation panel 34 is also preferably corrugated with grooves and ridges such as have an increased panel surface for a given panel width. The size of the grooves and ridges is preferably selected based on the conductivity of the panel and/or on the type and flow of coolant. In a particular embodiment, the grooves and ridges are almost parallel to the ground, extending at a slight angle to form a descending slope directed toward a return conduit 58 to be described further below. The number and size of the grooves and ridges is varied to obtain a desired condensation surface of the panel 34.
The condensation system 10 further includes a coolant spraying assembly 40. The coolant spraying assembly 40 comprises a coolant reservoir 42, which in a particular embodiment is located underground to maintain a low temperature of the coolant, a main conduit 44 extending from the coolant reservoir 42 and connected to a plurality of secondary conduits 46 located in proximity of an outer surface 48 of the condensation panel 34, and a plurality of spraying nozzles 50 in fluid communication with the secondary conduits 46. The coolant spraying assembly 40 also includes a pump 52, which pumps the coolant from the coolant reservoir 42, through the conduits 44, 46 and to the spraying nozzles 50. The spraying nozzles 50 are located and oriented to spray the coolant on the outer surface 48 of the condensation panel 34.
The condensation system 10 further includes a coolant collection system 54, comprising a coolant gutter 56 (see Fig.
2) which extends along the bottom edge 38 of the condensation panel 34 and is placed such that the coolant sprayed onto the outer surface 48 of the condensation panel 34 and flowing downwardly along that surface falls within the coolant gutter 56. The coolant collection system 54 further comprises a coolant return conduit 58 in fluid communication with the coolant gutter 56 and returning the collected coolant to the coolant reservoir 42 by gravity.
The condensation system 10 shown is particularly adapted for colder climates, where the coolant, if unprotected from the outside environment, could potentially freeze in the spraying nozzles 50 and/or on the condensation panel 34. In an alternate embodiment particularly suitable for warmer climates, the condensation panel 34 defines an exterior surface of the roof structure 20, i.e. the outer surface 48 of the condensation panel 34 and at least the spraying nozzles 50 are located outside of the enclosure 14.
In a particular embodiment, the coolant is cool tap water. Alternate coolants that can be used include sea, lake or pond water (in that instance the main conduit 44 and the coolant return conduit 58 can be in direct communication with the sea, lake or pond and the coolant reservoir 42 can thus be omitted), and glycol. Glycol is particularly useful in a closed circuit system to maximize the useful time of the coolant as well as in freezing conditions.
In a particular embodiment, the pumped coolant goes through a refrigeration system (not shown) before being sent to the spraying nozzles 50 in order to increase the cooling of the condensation panel 34. Such a refrigeration system can include for example propane or natural gas-driven chillers, or solar powered condensers and cooling towers.
The condensation system 10 further includes a condensate collection system 60, comprising a condensate gutter 62 which extends along the bottom edge 38 of the condensation panel 34 and is placed such that liquid flowing downwardly along an inner surface 64 of the condensation panel 34 falls within the condensate gutter 62, and a condensate return conduit 66 in fluid communication with the condensate gutter 62 and directing the condensate to a condensate reservoir 68 by gravity.
In use, the coolant is sprayed onto the outer surface 48 of the condensation panel 34 such as to create a continuous cooling film thereon, effectively cooling the condensation panel 34 to a temperature lower, and preferably at least 5 C
lower, than the humid air within the enclosure 14. The coolant flows along the outer surface 48 of the condensation panel 34, into the coolant gutter 56, and returns to the coolant reservoir 42 through the coolant return conduit 58 for recirculation. In cases where the coolant does not circulate through a refrigeration system between each time it is sprayed on the condensation panel 34, the coolant is recirculated until its temperature becomes too high to provide proper cooling, at which point the used coolant is exchanged for fresh coolant with an adequately low temperature. The exhausted coolant can be cooled in a refrigeration system and later re-used in the coolant spraying assembly 40. Sunlight enters the enclosure 14 through the covering member 26 which is free of foam, and heats the enclosure 14. Water from within the enclosure 14 (e.g. plant transpiration) evaporates to increase the vapor content of the air. A portion of the water vapor contained in the humid air condensates on the cool inner surface 64 of the condensation panel 34, flows along the corrugations of the inner surface 64 into the condensate gutter 62, and into the condensate reservoir 68 through the condensate return conduit 66. The condensation system 10 thus allows the reduction of the humidity content within the enclosure 14 when necessary. In addition, the condensate can be used in the greenhouse 12, such as for example for cleaning, watering plants, etc.
In a particular embodiment, the outer surface 48 of the condensation panel 34 is covered by a screen member (not shown) or another similar structure acting to slow the flow of coolant therealong in order to increase the heat transfer between the coolant and the condensation panel 34.
The angle of the condensation panel 34 is selected such as to allow the condensate to flow along the inner surface 64 (i.e. by opposition to dripping vertically therefrom), while preferably being as close to vertical as possible to minimize the solar energy absorbed by the panel 34. In a particular embodiment, the condensation panel 34 forms an angle e (see Fig. 2) of approximately 68 with the horizontal. The possible angle variation depends on the design of the grooves and ridges on the condensation panel 34. In a particular embodiment, the condensation panel 34 is retained such that the angle thereof can be varied depending on the type of coolant being used, taking into account relevant factors such as the. degree of heat absorption and the viscosity of the coolant.
In order to maximize the efficiency of the condensation process, the rear side of the greenhouse, i.e. the condensation panel 34, preferably faces north or north east.
In an alternate embodiment which is not shown, the condensation panel 34 is enclosed similarly to a radiator, with the coolant passing inside the panel within tubes instead of being sprayed thereon. The slope of the condensation panel 34 is preferably variable depending on the type of coolant being used and on the degree of heat absorption from the condensate side of the panel 34. The coolant is preferably collected after circulation through the panel 34 to be re-chilled. The size of the tubes circulating the coolant within the panel is selected according to the conductivity of the panel and/or the flow and type of coolant.
During the night, the cavity 30 defined between the layers 28 of the covering member 26 is filled with foam 32, such as to insulate the covering member 26 and minimize the loss of heat therethrough. As the air within the enclosure 14 is kept warm, the condensation along the inner surface 64 of the condensation panel 34 can continue for at least part of the night. The cavity 30 can also be filled with foam during the day when sunlight is inadequate, when shading is desired to reduce excessive sunlight and cool the enclosure 14, or when the temperature within the enclosure 14 is at a maximum desirable value.
In a particular embodiment, during the period when there is no foam between the layers 28 of the covering member 26 (e.g. daytime), the air located within the cavity 30 and heated by the sunlight exits the cavity 30 through a chimney (not shown) such as to rotate fan blades (not shown) to generate electricity, which can be used for example to drive the pump 52.
Referring to Fig. 3, a condensation system 110 according to an alternate embodiment of the present invention is shown, where the condensation system 110 is used as a water purification system and more particularly as a desalination system. Elements not shown in Fig. 3 are, in a particular embodiment, similar to the corresponding elements shown in Figs. 1-2.
The condensation system 110 includes a desalination enclosure 114 installed such as to enclose a salt water basin or pool ill (whether natural or artificial) and a volume of humid air defined over the basin 111. The enclosure 114 is defined by an angled roof structure 120 extending from the ground and an angled condensation panel 134 extending from the ground and connected to the roof structure 120 along an apex of the enclosure 114. The roof structure 120 may be flat as shown or alternately be curved from its peak to its base.
Alternately, the enclosure can include walls with the roof structure 120 and condensation panel 134 being sealingly received on top of the walls, the roof structure 120 preferably being inclined in at least one plane (e.g.
arcuate).
As in the previous embodiment, the condensation panel 134 is made of a heat conductive material such as for example anodized aluminum, copper, iron or another appropriate type of metal, and is also preferably corrugated with grooves and ridges extending almost parallel to the ground with a small slope to one side so as to permit the condensate to flow to one side to a specific location. Alternately, the grooves can extend along the height of the panel 134 as in the previous embodiment.
The roof structure 120 can include an arch and truss framework as in the previous embodiment, or any other type of adequate support structure. The roof structure includes a covering member 126 which is made of a material permeable to light, for example polyethylene sheet material, glass, polycarbonate, or another adequate type of plastic. In the embodiment shown, the covering member 126 includes two spaced apart layers 128 of material permeable to light and defining a sealed cavity 130 therebetween, which is preferably temporarily filled with an appropriate type of foam 132 (only partially shown in the Figure) during nighttime and any other time where heat needs to be retained within the enclosure 114 or when sunlight needs to be blocked. In a particular embodiment, the lower one of the layers 128 is maintained by an appropriate structure (e.g. an arch and truss framework) and the upper one of the layers 128 is maintained spaced apart from the lower layer by the low pressure air contained within the cavity 130.
In a particular embodiment, the angle al of the condensation panel 134 with respect to the horizontal is substantially greater than the angle a2 of the roof structure 120 with respect to the horizontal, such that a surface of the roof structure 120 is substantially larger than a surface of the condensation panel 134 in order to optimize the heating of the enclosure 114 as well as the amount of condensate produced.
The condensation system 110 also includes a coolant spraying assembly 140, comprising a coolant reservoir (not shown) or a cold water source, a main conduit (now shown) extending from the coolant reservoir or source and connected to a plurality of secondary conduits 146 located in proximity of an outer surface 148 of the condensation panel 134, and a plurality of spraying nozzles 150 in fluid communication with the secondary conduits 146. A pump (not shown) pumps the coolant from the reservoir or source to the spraying nozzles 150 which spray the coolant on the outer surface 148 of the condensation panel 134.
The condensation system further includes a coolant collection system 154 comprising a coolant gutter 158 which extends along the bottom edge 138 of the condensation panel 134 to collect the coolant flowing downwardly along the outer surface 148 of the panel 134, and a coolant return conduit (not shown) returning the collected coolant to the reservoir by gravity.
The condensation system 110 further includes a condensate collection system 160 comprising a condensate gutter 162 which extends along the bottom edge 138 of the condensation panel 134 to collect the condensate flowing downwardly along an inner surface 164 of the panel 134, and a condensate return conduit (not shown) in fluid communication with the condensate gutter 162 and directing the condensate to a condensate reservoir (not shown) by gravity.
As in the previous embodiment, the coolant sprayed onto the outer surface 148 of the condensation panel 134 cools the condensation panel 134 to a temperature lower, and preferably C lower, than the humid air within the enclosure 114, and is collected in the coolant gutter 156 to be returned to the coolant source. Sunlight goes through the covering member 126 which is free of foam, and heats the enclosure 114 and as such the top layer of salt water within the basin 111, thus allowing that water to evaporate. The evaporated water contained in the air of the enclosure 114 condensates on the cool inner surface 164 of the condensation panel 134, and is collected in the condensate gutter 162 to then flow into the condensate reservoir. The evaporation and condensation cycle thus effectively desalinates the salt water from the basin 111 and eliminates any impurities that are naturally separated from water upon vaporization. A slight amount of salt may remain in the condensate and can be removed therefrom by known processes, such as for example reverse osmosis.
In a particular embodiment, the coolant used is cool salt water, e.g. from the bottom of the ocean, and is recirculated until it is warmed to a point where the temperature difference between the coolant and the enclosure 114 is no longer adequate to provide proper cooling. The warmed coolant is then added to the salt water basin 111 to replace the evaporated water, and a new coolant supply is extracted from the cool salt water source.
lower, than the humid air within the enclosure 14. The coolant flows along the outer surface 48 of the condensation panel 34, into the coolant gutter 56, and returns to the coolant reservoir 42 through the coolant return conduit 58 for recirculation. In cases where the coolant does not circulate through a refrigeration system between each time it is sprayed on the condensation panel 34, the coolant is recirculated until its temperature becomes too high to provide proper cooling, at which point the used coolant is exchanged for fresh coolant with an adequately low temperature. The exhausted coolant can be cooled in a refrigeration system and later re-used in the coolant spraying assembly 40. Sunlight enters the enclosure 14 through the covering member 26 which is free of foam, and heats the enclosure 14. Water from within the enclosure 14 (e.g. plant transpiration) evaporates to increase the vapor content of the air. A portion of the water vapor contained in the humid air condensates on the cool inner surface 64 of the condensation panel 34, flows along the corrugations of the inner surface 64 into the condensate gutter 62, and into the condensate reservoir 68 through the condensate return conduit 66. The condensation system 10 thus allows the reduction of the humidity content within the enclosure 14 when necessary. In addition, the condensate can be used in the greenhouse 12, such as for example for cleaning, watering plants, etc.
In a particular embodiment, the outer surface 48 of the condensation panel 34 is covered by a screen member (not shown) or another similar structure acting to slow the flow of coolant therealong in order to increase the heat transfer between the coolant and the condensation panel 34.
The angle of the condensation panel 34 is selected such as to allow the condensate to flow along the inner surface 64 (i.e. by opposition to dripping vertically therefrom), while preferably being as close to vertical as possible to minimize the solar energy absorbed by the panel 34. In a particular embodiment, the condensation panel 34 forms an angle e (see Fig. 2) of approximately 68 with the horizontal. The possible angle variation depends on the design of the grooves and ridges on the condensation panel 34. In a particular embodiment, the condensation panel 34 is retained such that the angle thereof can be varied depending on the type of coolant being used, taking into account relevant factors such as the. degree of heat absorption and the viscosity of the coolant.
In order to maximize the efficiency of the condensation process, the rear side of the greenhouse, i.e. the condensation panel 34, preferably faces north or north east.
In an alternate embodiment which is not shown, the condensation panel 34 is enclosed similarly to a radiator, with the coolant passing inside the panel within tubes instead of being sprayed thereon. The slope of the condensation panel 34 is preferably variable depending on the type of coolant being used and on the degree of heat absorption from the condensate side of the panel 34. The coolant is preferably collected after circulation through the panel 34 to be re-chilled. The size of the tubes circulating the coolant within the panel is selected according to the conductivity of the panel and/or the flow and type of coolant.
During the night, the cavity 30 defined between the layers 28 of the covering member 26 is filled with foam 32, such as to insulate the covering member 26 and minimize the loss of heat therethrough. As the air within the enclosure 14 is kept warm, the condensation along the inner surface 64 of the condensation panel 34 can continue for at least part of the night. The cavity 30 can also be filled with foam during the day when sunlight is inadequate, when shading is desired to reduce excessive sunlight and cool the enclosure 14, or when the temperature within the enclosure 14 is at a maximum desirable value.
In a particular embodiment, during the period when there is no foam between the layers 28 of the covering member 26 (e.g. daytime), the air located within the cavity 30 and heated by the sunlight exits the cavity 30 through a chimney (not shown) such as to rotate fan blades (not shown) to generate electricity, which can be used for example to drive the pump 52.
Referring to Fig. 3, a condensation system 110 according to an alternate embodiment of the present invention is shown, where the condensation system 110 is used as a water purification system and more particularly as a desalination system. Elements not shown in Fig. 3 are, in a particular embodiment, similar to the corresponding elements shown in Figs. 1-2.
The condensation system 110 includes a desalination enclosure 114 installed such as to enclose a salt water basin or pool ill (whether natural or artificial) and a volume of humid air defined over the basin 111. The enclosure 114 is defined by an angled roof structure 120 extending from the ground and an angled condensation panel 134 extending from the ground and connected to the roof structure 120 along an apex of the enclosure 114. The roof structure 120 may be flat as shown or alternately be curved from its peak to its base.
Alternately, the enclosure can include walls with the roof structure 120 and condensation panel 134 being sealingly received on top of the walls, the roof structure 120 preferably being inclined in at least one plane (e.g.
arcuate).
As in the previous embodiment, the condensation panel 134 is made of a heat conductive material such as for example anodized aluminum, copper, iron or another appropriate type of metal, and is also preferably corrugated with grooves and ridges extending almost parallel to the ground with a small slope to one side so as to permit the condensate to flow to one side to a specific location. Alternately, the grooves can extend along the height of the panel 134 as in the previous embodiment.
The roof structure 120 can include an arch and truss framework as in the previous embodiment, or any other type of adequate support structure. The roof structure includes a covering member 126 which is made of a material permeable to light, for example polyethylene sheet material, glass, polycarbonate, or another adequate type of plastic. In the embodiment shown, the covering member 126 includes two spaced apart layers 128 of material permeable to light and defining a sealed cavity 130 therebetween, which is preferably temporarily filled with an appropriate type of foam 132 (only partially shown in the Figure) during nighttime and any other time where heat needs to be retained within the enclosure 114 or when sunlight needs to be blocked. In a particular embodiment, the lower one of the layers 128 is maintained by an appropriate structure (e.g. an arch and truss framework) and the upper one of the layers 128 is maintained spaced apart from the lower layer by the low pressure air contained within the cavity 130.
In a particular embodiment, the angle al of the condensation panel 134 with respect to the horizontal is substantially greater than the angle a2 of the roof structure 120 with respect to the horizontal, such that a surface of the roof structure 120 is substantially larger than a surface of the condensation panel 134 in order to optimize the heating of the enclosure 114 as well as the amount of condensate produced.
The condensation system 110 also includes a coolant spraying assembly 140, comprising a coolant reservoir (not shown) or a cold water source, a main conduit (now shown) extending from the coolant reservoir or source and connected to a plurality of secondary conduits 146 located in proximity of an outer surface 148 of the condensation panel 134, and a plurality of spraying nozzles 150 in fluid communication with the secondary conduits 146. A pump (not shown) pumps the coolant from the reservoir or source to the spraying nozzles 150 which spray the coolant on the outer surface 148 of the condensation panel 134.
The condensation system further includes a coolant collection system 154 comprising a coolant gutter 158 which extends along the bottom edge 138 of the condensation panel 134 to collect the coolant flowing downwardly along the outer surface 148 of the panel 134, and a coolant return conduit (not shown) returning the collected coolant to the reservoir by gravity.
The condensation system 110 further includes a condensate collection system 160 comprising a condensate gutter 162 which extends along the bottom edge 138 of the condensation panel 134 to collect the condensate flowing downwardly along an inner surface 164 of the panel 134, and a condensate return conduit (not shown) in fluid communication with the condensate gutter 162 and directing the condensate to a condensate reservoir (not shown) by gravity.
As in the previous embodiment, the coolant sprayed onto the outer surface 148 of the condensation panel 134 cools the condensation panel 134 to a temperature lower, and preferably C lower, than the humid air within the enclosure 114, and is collected in the coolant gutter 156 to be returned to the coolant source. Sunlight goes through the covering member 126 which is free of foam, and heats the enclosure 114 and as such the top layer of salt water within the basin 111, thus allowing that water to evaporate. The evaporated water contained in the air of the enclosure 114 condensates on the cool inner surface 164 of the condensation panel 134, and is collected in the condensate gutter 162 to then flow into the condensate reservoir. The evaporation and condensation cycle thus effectively desalinates the salt water from the basin 111 and eliminates any impurities that are naturally separated from water upon vaporization. A slight amount of salt may remain in the condensate and can be removed therefrom by known processes, such as for example reverse osmosis.
In a particular embodiment, the coolant used is cool salt water, e.g. from the bottom of the ocean, and is recirculated until it is warmed to a point where the temperature difference between the coolant and the enclosure 114 is no longer adequate to provide proper cooling. The warmed coolant is then added to the salt water basin 111 to replace the evaporated water, and a new coolant supply is extracted from the cool salt water source.
In order to maximize the efficiency of the condensation process, the condensation panel 134 preferably faces north or north east.
As in the previous embodiment, the cavity 130 defined between the layers 128 of the covering member 126 is preferably filled with foam 132 during the night such as to minimize heat loss through the covering member 126, allowing the desalination process to continue into the night and as such maximizing the amount of condensate produced within a 24 hour period.
As in the previous embodiment, the hot air contained between the layers 127 of the covering member 126 during daytime (i.e. when the foam is removed) can be directed to a chimney, which may extend for example 20 or 30 feet above the apex of the enclosure 114, and used to rotate fan blades. The coolant can also go through a refrigeration system before being sent to the spraying nozzles 150 to further increase the temperature difference between the condensation panel 134 and the air within the enclosure 114.
In an alternate embodiment which is not shown, a membrane can be provided outwardly of the condensation panel 134 and the coolant spraying assembly 140, to provide insulation against cold weather conditions which could freeze the coolant. Such a membrane is preferably in sealed engagement with the roof structure 120.
The embodiments of the invention described above are intended to be exemplary. Those skilled in the art will therefore appreciate that the foregoing description is illustrative only, and that various alternate configurations and modifications can be devised without departing from the spirit of the present invention. Accordingly, the present invention is intended to embrace all such alternate configurations, modifications and variances which fall within the scope of the appended claims.
As in the previous embodiment, the cavity 130 defined between the layers 128 of the covering member 126 is preferably filled with foam 132 during the night such as to minimize heat loss through the covering member 126, allowing the desalination process to continue into the night and as such maximizing the amount of condensate produced within a 24 hour period.
As in the previous embodiment, the hot air contained between the layers 127 of the covering member 126 during daytime (i.e. when the foam is removed) can be directed to a chimney, which may extend for example 20 or 30 feet above the apex of the enclosure 114, and used to rotate fan blades. The coolant can also go through a refrigeration system before being sent to the spraying nozzles 150 to further increase the temperature difference between the condensation panel 134 and the air within the enclosure 114.
In an alternate embodiment which is not shown, a membrane can be provided outwardly of the condensation panel 134 and the coolant spraying assembly 140, to provide insulation against cold weather conditions which could freeze the coolant. Such a membrane is preferably in sealed engagement with the roof structure 120.
The embodiments of the invention described above are intended to be exemplary. Those skilled in the art will therefore appreciate that the foregoing description is illustrative only, and that various alternate configurations and modifications can be devised without departing from the spirit of the present invention. Accordingly, the present invention is intended to embrace all such alternate configurations, modifications and variances which fall within the scope of the appended claims.
Claims (12)
1. A condensation system comprising:
an enclosure containing humid air, the enclosure being at least partly defined by a roof structure, the roof structure including a covering member having two spaced apart layers of translucent material adapted to let sunlight therethrough and defining a sealed cavity therebetween;
a foaming system temporarily filling the cavity with foam to increase insulating properties of the covering member and removing the foam to let sunlight through the covering member during given periods to heat the enclosure;
an angled condensation panel made of a heat conducting material and exposed to the humid air in the enclosure;
a coolant system for cooling the condensation panel to a temperature lower than a temperature of the humid air; and a collection system collecting water condensing from the humid air on an inner surface of the condensation panel.
an enclosure containing humid air, the enclosure being at least partly defined by a roof structure, the roof structure including a covering member having two spaced apart layers of translucent material adapted to let sunlight therethrough and defining a sealed cavity therebetween;
a foaming system temporarily filling the cavity with foam to increase insulating properties of the covering member and removing the foam to let sunlight through the covering member during given periods to heat the enclosure;
an angled condensation panel made of a heat conducting material and exposed to the humid air in the enclosure;
a coolant system for cooling the condensation panel to a temperature lower than a temperature of the humid air; and a collection system collecting water condensing from the humid air on an inner surface of the condensation panel.
2. The condensation system according to claim 1, wherein the condensation panel is contained within the enclosure.
3. The condensation system according to claim 1, wherein the cooling system includes a spraying system spraying coolant on an outer surface of the condensation panel.
4. The condensation system according to claim 1, wherein said roof structure extends at least partly over a salt water basin.
5. The condensation system according to claim 1, wherein said coolant system includes a coolant reservoir at least partly buried in the ground.
6. A condensation system comprising:
a humid air enclosure at least partly defined by a roof structure having a portion made of translucent material adapted to let sunlight therethrough to heat the enclosure;
a condensation panel made of a heat conducting material, the condensation panel being exposed to humid air contained in the enclosure, the condensation panel being disposed such that a flow of sunlight through the translucent material within the enclosure is at least substantially free of obstruction from the condensation panel;
a coolant system creating a flow of coolant over a first surface of the condensation panel to bring the condensation panel to a temperature lower than a temperature of the humid air; and a condensate collection system collecting water condensing from the humid air on a second surface of the condensation panel opposite the first surface thereof.
a humid air enclosure at least partly defined by a roof structure having a portion made of translucent material adapted to let sunlight therethrough to heat the enclosure;
a condensation panel made of a heat conducting material, the condensation panel being exposed to humid air contained in the enclosure, the condensation panel being disposed such that a flow of sunlight through the translucent material within the enclosure is at least substantially free of obstruction from the condensation panel;
a coolant system creating a flow of coolant over a first surface of the condensation panel to bring the condensation panel to a temperature lower than a temperature of the humid air; and a condensate collection system collecting water condensing from the humid air on a second surface of the condensation panel opposite the first surface thereof.
7. The condensation system of claim 6, further comprising a coolant collection system collecting the coolant flowing on the first surface and returning the collected coolant to the coolant system until a temperature of the collected coolant reaches a given value.
8. The condensation system of claim 6, wherein the portion made of translucent material includes two layers of translucent material spaced apart from one another and defining a sealed cavity therebetween.
9. The condensation system of claim 8, further including a foaming system temporarily and removably filling the cavity with foam to increase insulating properties of the roof structure.
10. The condensation system of claim 8, wherein excess heat generated between the two layers is used to drive a fan generator providing energy to at least partly drive the coolant system.
11. The condensation system of claim 6, wherein the roof structure extends over a body of water.
12. The condensation system as defined in claim 6, wherein the condensation panel is an upstanding corrugated panel, and wherein a gutter is provided at a lower end of the panel to collect the condensate flowing downwardly by gravity over the second surface of the condensation panel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90764307P | 2007-04-12 | 2007-04-12 | |
| US60/907,643 | 2007-04-12 | ||
| PCT/CA2008/000690 WO2008124935A1 (en) | 2007-04-12 | 2008-04-11 | Condensation system for dehumidification and desalination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2719496A1 true CA2719496A1 (en) | 2008-10-23 |
Family
ID=39863203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2719496A Abandoned CA2719496A1 (en) | 2007-04-12 | 2008-04-11 | Condensation system for dehumidification and desalination |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA2719496A1 (en) |
| IL (1) | IL201419A0 (en) |
| MA (1) | MA31360B1 (en) |
| MX (1) | MX2009010942A (en) |
| WO (1) | WO2008124935A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480494A (en) * | 2020-05-13 | 2020-08-04 | 徐晨傲 | Automatic remove glass warmhouse booth of comdenstion water |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20130620A1 (en) | 2013-04-16 | 2014-10-17 | Gi Plast S R L | PANEL FOR ROOFING WITH ANTI-DROP FUNCTION |
| CA3093806A1 (en) * | 2018-03-11 | 2019-09-19 | Carlos R. VILLAMAR | System and method for solar greenhouse aquaponics and black soldier fly composter and auto fish feeder |
| CN110915499A (en) * | 2019-12-16 | 2020-03-27 | 珠海莱坦科技有限公司 | Automatic change system that waters |
| CN111519702B (en) * | 2020-04-28 | 2021-03-30 | 深圳康纳环保有限公司 | Automatic water intaking seedling raising shed in desert |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3327896A1 (en) * | 1983-08-02 | 1985-02-21 | Immler, Volker, 8999 Weiler | Building structure for the production of fresh water from sea water |
| DE3612188A1 (en) * | 1986-04-11 | 1987-10-15 | Walter Graef | Solar sea-water desalination plant |
| US4788791A (en) * | 1986-12-30 | 1988-12-06 | Sprung Philip D | Cooling system for greenhouse structures |
| DE19935606A1 (en) * | 1999-08-03 | 2001-02-08 | Tkadlec Stanislav | Steam and mist collector for kitchen; has cooled wall to condense water and other components from steamy air, where condensed water flow into drain channel for removal |
| US6574979B2 (en) * | 2000-07-27 | 2003-06-10 | Fakieh Research & Development | Production of potable water and freshwater needs for human, animal and plants from hot and humid air |
| CA2532275A1 (en) * | 2003-07-23 | 2005-01-27 | Sunarc Of Canada Inc. | Dynamic foam insulation/shading system with inflatable bags |
-
2008
- 2008-04-11 CA CA2719496A patent/CA2719496A1/en not_active Abandoned
- 2008-04-11 MX MX2009010942A patent/MX2009010942A/en not_active Application Discontinuation
- 2008-04-11 WO PCT/CA2008/000690 patent/WO2008124935A1/en active Application Filing
-
2009
- 2009-10-11 IL IL201419A patent/IL201419A0/en unknown
- 2009-11-02 MA MA32321A patent/MA31360B1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480494A (en) * | 2020-05-13 | 2020-08-04 | 徐晨傲 | Automatic remove glass warmhouse booth of comdenstion water |
Also Published As
| Publication number | Publication date |
|---|---|
| IL201419A0 (en) | 2010-05-31 |
| WO2008124935A1 (en) | 2008-10-23 |
| MA31360B1 (en) | 2010-05-03 |
| MX2009010942A (en) | 2009-11-26 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request |
Effective date: 20130312 |
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| FZDE | Discontinued |
Effective date: 20160413 |