AU2008336266A1 - Solar distillation device - Google Patents

Solar distillation device Download PDF

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Publication number
AU2008336266A1
AU2008336266A1 AU2008336266A AU2008336266A AU2008336266A1 AU 2008336266 A1 AU2008336266 A1 AU 2008336266A1 AU 2008336266 A AU2008336266 A AU 2008336266A AU 2008336266 A AU2008336266 A AU 2008336266A AU 2008336266 A1 AU2008336266 A1 AU 2008336266A1
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AU
Australia
Prior art keywords
liquid
solar
desalination
collection
chamber
Prior art date
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.)
Abandoned
Application number
AU2008336266A
Inventor
Rodney Bourchier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
H2OASIS ENERGY Pty Ltd
Original Assignee
H2OASIS ENERGY Pty Ltd
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
Priority to AU2007906754A priority Critical patent/AU2007906754A0/en
Priority to AU2007906754 priority
Application filed by H2OASIS ENERGY Pty Ltd filed Critical H2OASIS ENERGY Pty Ltd
Priority to AU2008336266A priority patent/AU2008336266A1/en
Priority to PCT/AU2008/001832 priority patent/WO2009073929A1/en
Publication of AU2008336266A1 publication Critical patent/AU2008336266A1/en
Abandoned legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G27/00Self-acting watering devices, e.g. for flower-pots
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0011Heating features
    • B01D1/0029Use of radiation
    • B01D1/0035Solar energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • B01D5/0066Dome shaped condensation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/30Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/138Water desalination using renewable energy
    • Y02A20/142Solar thermal; Photovoltaics
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/211Solar-powered water purification
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Description

WO 2009/073929 PCT/AU2008/001832 1 Solar Distillation Device The present invention relates to a solar powered water desalination and distillation device, specifically, distributed desalination for irrigation or drinking water. BACKGROUND OF THE INVENTION 5 In large parts of the world fresh water resources are limited. Water for drinking and for irrigation therefore has to be produced from brackish water or sea water. The most common water purification methods to date have been designed for centralized use in locations along dry, ocean coasts. Inventions useful in the desalination of water have focused on complicated and expensive machinery to make water potable. Many previous inventions also rely heavily on 10 electrical power to fuel the desalination process, further adding cost to the desalination process. In. recent years the focus in desalination has been to harness solar power for use in desalination of water, thus making potable water somewhat cheaper to produce. However, these recent inventions still rely on the concept of localized factory style processing plants for salinated water drawn from the ocean. This method of water desalination causes the costs for the 15 production of complicated machinery and shipping of fresh water to keep desalination from being a viable option for many localities around the world. One disadvantage of the known devices is that they are relatively bulky, expensive and stringent requirements must be met with respect to periodic maintenance. The construction of these known devices often requires trained construction crews to assemble. 20 Another disadvantage of these known devices is that they rely on a factory style paradigm for the creation of water. This has the effect of making the process of desalination centralized, and therefore fresh water created by a desalination process is created in one location. It is an object of the present invention to overcome at least some of the aforementioned problems or provide the public with a useful alternative. 25 It is a further object of the present invention to provide a method of desalination that is mass producible by using single piece plastic extrusions.
WO 2009/073929 PCT/AU2008/001832 2 It is a still further object of the present invention to make it possible to desalinate water across large expanses of territory, without the need to incur additional distribution costs. It is a yet further object of the present invention to improve upon previous desalination devices by decreasing the cost of desalination equipment as well as de-centralizing the process of 5 desalination, thereby making the desalination of water efficient for irrigation as well as in the creation of potable water. SUMMARY OF THE INVENTION Therefore in one form of the invention there is proposed a device for treating liquid, said device characterised by: 10 at least one chamber for holding said liquid; at least one collection chamber; a means of heating said at least one holding chamber to cause said liquid to evaporate; and a surface for forming condensate resulting from said evaporation, and directing said condensate into said at least one collection chamber. 15 Preferably said means of heating the liquid holding chamber is solar energy. In preference said device further includes a means of assisting said heating of the holding chamber using solar energy. In preference said means of assisting solar heating is in the form of a lens used to focus the solar energy onto said liquid. Preferably said lens is a Fresnel lens. 20 In preference said holding chamber includes a surface for absorbing some of said focused heat to prevent damage to said device. Preferably said heat absorbing surface is a ceramic surface. In preference said device further includes a means of removing treated liquid from said at least one collection chamber for use. 25 In preference said holding and collection chambers are housed inside a substantially enclosed, box-like structure.
WO 2009/073929 PCT/AU2008/001832 3 Alternatively, said holding and collection chambers are housed inside a substantially enclosed, extruded structure. Preferably the cross section of said extruded structure is hemispherical in shape having a flat base, whereby said chambers are defined and separated by internal partitions upstanding 5 from said base. In preference said structure and said internal partitions are integrally formed. Preferably said structure is constructed from heat resistant material such as Polyvinyl Chloride (PVC) or fibreglass. Preferably said device is portable. 10 In preference said liquid is saline water, and the condensate collected in said collection chamber is treated, substantially desalinated fresh water. In a further form of the invention there is proposed a solar distillation/desalination device for use in association with corrugated roof sheets having a plurality of peaks and troughs, said solar distillation device characterised by at least one elongated structure having a flat base and an 15 upright body shaped to be housed inside a peak of said corrugated roof sheet, said elongated structure including at least one internal partition upstanding from said base separating at least one liquid holding area from at least one liquid collection area, whereby solar energy that is absorbed by said roof sheet heats the liquid holding area and causes evaporation of said liquid, said upright body including a surface to collect condensate resulting from said evaporation and 20 direct said condensate into said liquid collection area. In preference said flat base, upright body and internal partitions are integrally formed. Preferably said upright body is a substantially enclosed hemispherical body, said condensation collection surface being a ceiling of said hemispherical body. In a still further form of the invention there is proposed a solar distillation/desalination 25 roof system including a solar distillation device as characterised above. Preferably each peak of said corrugated roof sheets includes one of said solar distillation devices.
WO 2009/073929 PCT/AU2008/001832 4 Preferably said system further includes a liquid storage area adapted to store liquid which accumulates in each of said liquid collection areas. In a yet further form of the invention there is proposed a solar distillation/desalination device for use in irrigating a ground surface, said device characterised by an extruded structure 5 adapted to be placed in the proximity of said ground surface to be irrigated, said structure including a box-like cross section having at least one liquid holding area and at least one liquid collection area, whereby solar energy that is absorbed by said device heats the liquid holding area and causes evaporation of said liquid, said structure including a surface to collect condensate resulting from said evaporation, and direct said condensate into said liquid collection 10 area. Preferably said device further includes a means of dispersing liquid which accumulates in said liquid collection area into the surrounding ground surface. Preferably said device further includes a means of assisting solar heating of the liquid holding area. 15 In preference said means of assisting solar heating is in the form of a lens used to focus the solar energy onto said liquid. Preferably said lens is a Fresnel lens. In preference said liquid holding area includes a surface for absorbing some of said focused heat to prevent damage to said device. 20 Preferably said heat absorbing surface is a ceramic surface. The device of the present invention therefore consists of a one piece article of manufacture, which is essentially a pipe or a box partially separated into two chambers. This separation is achieved using one or more specially shaped and oriented dividers which are internal to an outer shell, yet forming part of the outer shell. In the case of purifying saline water, 25 the system created by the dual chamber pipe works using the principle of evaporation to produce desalinated water. Water from a salinated water source for example, such as the ocean, is pumped from the source to inland areas. The water is then allowed to flow downhill through the bottom chamber of the apparatus. As the water flows down hill, the sun and radiant ground heat will cause the water to evaporate.
WO 2009/073929 PCT/AU2008/001832 5 Evaporated water that collects in the holding chamber will condense inside the chamber and flow along the sides of the pipe into separate collection chambers. Water can either be released at regular intervals for irrigation purposes or the water can be collected at designated locations along the pipe for drinking. The concentrated salt water that remains will then be 5 returned to its source through proper placement of the pipe. The present invention therefore represents a departure from previous desalination devices in its lower cost of manufacture, simplicity of construction and low operational costs. It further differs from previous devices in its non-local delivery of fresh water, making the system economically feasible for irrigation. 10 DESCRIPTION OF DRAWINGS The above and other objects, features, and advantages of the present invention will be apparent from the following detailed description of a preferred embodiment in conjunction with the accompanying drawings. In the drawings: Figure 1 illustrates a cross sectional view of a solar distillation device according to a first 15 embodiment of the present invention; Figure 2 illustrates a cutaway perspective view of the solar distillation device of Figure 1; Figure 3 illustrates a cutaway perspective view of a plurality of solar distillation devices according to a first embodiment; Figure 4 illustrates a cross sectional view of a solar distillation device according to a 20 second embodiment of the present invention; Figure 5 illustrates a cross sectional view of a solar distillation device according to a third embodiment of the present invention; Figure 6 illustrates in schematic perspective view a solar distillation device according to a fourth embodiment of the present invention; 25 Figure 7 illustrates in schematic perspective view the solar distillation device of Figure 6 in an extruded form; Figure 8 illustrates in schematic perspective view a plurality of the solar distillation devices of Figure 6; WO 2009/073929 PCT/AU2008/001832 6 Figure 9 illustrates a cross sectional view of solar distillation devices according to a fifth embodiment of the present invention; Figure 10 illustrates a cutaway perspective view of the solar distillation devices of Figure 9. 5 Figure 11 illustrates a cross sectional view of a solar distillation device according to a sixth embodiment of the present invention; and Figure 12 illustrates in schematic perspective view an extruded version of the solar distillation device of Figure 11 positioned around a tree. DESCRIPTION OF THE PREFERRED EMBODIMENT 10 Shown in the drawings is a solar distillation device 1Oa (Figures 1-3), 1Ob (Figure 4), 1Oc (Figure 5), 1Od (Figures 6-8), 1Oe (Figures 9-10) and 1Of (Figures 11-12). In each case the devices operate on similar principles and have a number of features in common. In particular, each device works using the principle of evaporation and condensation to produce treated liquid. Where like features are described in the drawings, like numerals will be used to refer to these 15 features. It is to be further understood that the device of the present invention has application in a wide range of environments and could be used to treat a wide range of liquids not limited to saline water. The solar distillation devices 1Oa-lOe essentially comprise an outer shell 12 and at least one dividing element 14 which separates a chamber 16 containing untreated liquid 18 from 20 chambers 20 containing treated liquid 22 resulting from the evaporation and condensation process described below. As will become apparent, the device is not intended to be limited to having only one of each of these chambers. Turning firstly to device 10a in Figures 1-3, the outer shell 12 is in the form of an extrusion having a substantially hemispherical cross sectional shape. In the embodiment shown, 25 there are two internal dividing elements 14 which extend in a curved manner from the inside corners of the hemisphere, inwardly and upwardly to just beneath the ceiling 24 of the outer shell 12. The outer shell 12 and dividing elements 14 are preferably integrally formed.
WO 2009/073929 PCT/AU2008/001832 7 As the arrows in Figure 1 indicate, when untreated liquid 18 in chamber 16 is heated, by way of solar energy 26 for example, the liquid evaporates to form gas particles 28 which rise to the ceiling 24, where they condense to form a liquid again, which flows down along the curved ceiling 24 into chambers 20. The resultant liquid 22, as those skilled in the art would realise, is of 5 a more pure form than the untreated liquid 18 flowing through chamber 16. If for example the untreated liquid in chamber 16 is salt water, the device 1 Oa provides a means of evaporating the flow of salt water, collecting the evaporate, allowing the evaporate to condense, and collecting the condensate. Although not specifically shown in this embodiment, the condensed fresh water is adapted to be released for irrigation and drinking for example, 10 whilst the highly saline water remaining in chamber 16 is removed from the system or released to return to its source. Figure 3 illustrates an example of where a plurality of such devices positioned adjacent one another could be used. Devices 1 Ob and 1 Oc are illustrated in Figures 4 and 5 respectively and, as mentioned, work in the same way as device 1 Oa but are configured slightly differently. In particular, device 15 10b is still hemispherical but is located on an angled surface and includes only one of the curved dividing elements 14 of device 1 Oa. Alternatively, device 1 Oc includes a circular outer shell 12 having a dividing element which extends from one internal side thereof inwardly and upwardly in a similar fashion to the dividing elements of devices 1 Oa and 1 Ob. While devices 1Oa-10c may be in the form of extruded pipelines or hoses, the outer shell 20 12 of the device of the present invention could equally well be configured differently to suit particular environments, for example, when the present invention is used to treat water in the domestic environment. The embodiments shown in figures 6-10 illustrate such applications. For example, Figures 6-8 shows a solar distillation device 1 Od in the form of a surface mountable structure. The outer shell 12 in this case is a box-shaped tank and the dividing 25 element 14 is a plate which separates two chambers as per the previous embodiments. The surface which causes condensed liquid to flow into chamber 20 is the diagonal surface 24 of the outer shell 12.
WO 2009/073929 PCT/AU2008/001832 8 A further feature of device 1 Od is that it includes a means of increasing the heat inside the shell 12 to facilitate evaporation. The heating means is in the form of a Fresnel lens 30, or other similar lens, which is positioned to focus heat from the sun onto the untreated liquid 18. There is an outlet 32 positioned at the base of chamber 20, and an attached hose 34 for releasing the 5 treated liquid for use. Figure 7 illustrates an extruded form 36 of the device 1 Od in which there are a plurality of lenses 30 used, while Figure 8 illustrates three devices 1 Od mounted to a single surface, for example, a wall. Such configurations could be used in a home for example, where rain water could be stored in chamber 16 and evaporated and condensed using the method of the present invention to form treated water in chamber 20. 10 The solar distillation devices can be placed in areas where heat from the sun is at a maximum, for example, in the roof of homes. For example, Figures 9-10 illustrate devices 1 Oe mounted beneath peaks of corrugated roofing panels 38 which absorb significant heat from the sun. The added benefit to this also is that the solar distillation devices 1 Oe are hidden from view. In the embodiment shown, the roofing panel 38 is fixed to frame members 40 which are in turn 15 fixed to supporting cross beams 42. The device 1Oe illustrated is similar to device 1Oa previously described in that it is hemispherical in shape and includes two internal dividing elements 14, however, it differs slightly in that the treated liquid chambers 20 include exit channels 44 at the base of the dividing elements 14 allowing treated liquid 22 to drip into storage chambers 46 suspended beneath the cross beams 42. Treated water can then be easily retrieved from the 20 storage chambers 46. A further embodiment could be that the roofing panels are configured so that rain water trickles down and ponds horizontally in small ponding chambers (not shown) extending horizontally along the roof surface. The chambers are configured so that water which ponds evaporates and condenses within the chambers according to the principles described above, and 25 may then be run off for use. Figure 11 illustrates a still further embodiment of the invention and Figure 12 illustrates a possible application of this embodiment. Although the configuration of the device 1 Of is slightly different, it still works under the same principles as the devices 1 Oa- 1 Oe described above. The device 1 Of includes a heating compartment 48 which is a box-like structure including a Fresnel 30 lens 50 positioned to focus heat energy from the sun inside the compartment. Water inside the WO 2009/073929 PCT/AU2008/001832 9 compartment 48 is dripped from a main line 52 which houses untreated water. The heating compartment is therefore configured to facilitate evaporation of the water from the main line 52. A ceramic dish 54 is located at the bottom of the compartment 48 to absorb concentrated hear from the Fresnel lens 50 and thereby prevent potential damage to the compartment surface, 5 which is typically constructed of plastic material. Evaporated gas travels up through port 56 and into a condensing dome 58 mounted above the compartment 48. Between the condensing dome 48 and the heating compartment 48 is a run off chamber 60 having an angled lower surface for allowing condensed water from the condensing dome treated water to run off the sides of the condensing dome 58 to be put to use. 10 In Figure 12 there is shown a tree 62 having an extruded version 64 of the device 1 Of extending around the tree 62. There is shown a plurality of Fresnel lenses 50 for heating the water inside the heating compartment 48 which extends around the tree 62. Those skilled in the art would realise that treated water that is substantially free from salt can then be used to water the soil around the tree, by way of drip watering using treated water from the run-off chamber 60. 15 Modifications of device 1 Of could also be used. For example, it could be constructed so that the main line is positioned around the condensing dome to provide cooling to the dome to facilitate condensation. Such configurations could also be applied in other environments, for example, in lawn watering systems. The heating compartment 48 described above could be used to preheat water at the surface utilising energy from the sun, such water than being transported to 20 the solar distillation devices positioned beneath the surface. This would be especially beneficial in colder weather environments. The present invention is not intended to be limited to any one evaporating/condensing configuration. The devices 10 a-I Of can be manufactured from any material that is suitable to carry water for human consumption. Material should also be chosen that will be able to stand the heat 25 which will be produced by solar radiation, as well as radiant ground heat. The recommended material in terms of cost and relative endurance is Polyvinyl Chloride (PVC) or fiberglass. PVC will allow for cost effective construction by means of plastic extrusion. Lengths of individual sections of pipe can vary according to the methods of manufacture available for each material. The length and diameter of the devices 10 a-i Of will depend on surrounding 30 environmental variables, for example, whether it is industrially or domestically used.
WO 2009/073929 PCT/AU2008/001832 10 Precipitated salts and minerals can build up in the pipe and cause a backup of the system resulting in an overflow of the chambers, and for this reason it is recommended that the devices be flushed out at regular intervals. A larger diameter pipe will allow for a greater rate of evaporation as the surface area of the salt water flowing through chamber 16 will be increased. 5 The skilled addressee should now realise the potential benefits provided by the present invention. The invention has been described by way of example. The examples are not, however, to be taken as limiting the scope of the invention in any way. Modifications and variations of the invention such as would be apparent to a skilled addressee are deemed to be within the scope of the invention. 10 Further advantages and improvements may very well be made to the present invention without deviating from its scope. Although the invention has been shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope and spirit of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any 15 and all equivalent devices and apparatus. In any claims that follow and in the summary of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprising" is used in the sense of "including", i.e. the features specified may be associated with further features in various embodiments of the invention. 20

Claims (28)

1. A device for treating liquid, said device characterised by: at least one chamber for holding said liquid; at least one collection chamber; 5 a means of heating said at least one holding chamber to cause said liquid to evaporate; and a surface for forming condensate resulting from said evaporation, and directing said condensate into said at least one collection chamber.
2. A device as characterised in claim 1 wherein said means of heating the liquid holding 10 chamber is solar energy.
3. A device as characterised in claim 2 further including a means of assisting said heating of the holding chamber using solar energy.
4. A device as characterised in claim 3 wherein said means of assisting solar heating is in the form of a lens used to focus the solar energy onto said liquid. 15
5. A device as characterised in claim 4 wherein said lens is a Fresnel lens.
6. A device as characterised in claim 3 or claim 4 wherein said holding chamber includes a surface for absorbing some of said focused heat to prevent damage to said device.
7. A device as characterised in claim 6 wherein said heat absorbing surface is a ceramic surface. 20
8. A device as characterised in any one of the above claims further including a means of removing treated liquid from said at least one collection chamber for use.
9. A device as characterised in any one of the above claims wherein said holding and collection chambers are housed inside a substantially enclosed, box-like structure.
10. A device as characterised in any one of claims 1-8 wherein said holding and collection 25 chambers are housed inside a substantially enclosed, extruded structure. WO 2009/073929 PCT/AU2008/001832 12
11. A device as characterised in claim 10 wherein the cross section of said extruded structure is hemispherical in shape having a flat base, whereby said chambers are defined and separated by internal partitions upstanding from said base.
12. A device as characterised in claim 11 wherein said structure and said internal partitions 5 are integrally formed.
13. A device as characterised in any one of the above claims wherein said structure is constructed from heat resistant material such as Polyvinyl Chloride (PVC) or fibreglass.
14. A device as characterised in any one of the above claims wherein said device is portable.
15. A device as characterised in any one of the above claims wherein said liquid is saline 10 water, and the condensate collected in said collection chamber is treated, substantially desalinated fresh water.
16. A solar distillation/desalination device for use in association with corrugated roof sheets having a plurality of peaks and troughs, said solar distillation device characterised by at least one elongated structure having a flat base and an upright body shaped to be housed 15 inside a peak of said corrugated roof sheet, said elongated structure including at least one internal partition upstanding from said base separating at least one liquid holding area from at least one liquid collection area, whereby solar energy that is absorbed by said roof sheet heats the liquid holding area and causes evaporation of said liquid, said upright body including a surface to collect condensate resulting from said evaporation and direct 20 said condensate into said liquid collection area.
17. A solar distillation/desalination device as characterised in claim 16 wherein said base, upright body, and internal partitions are integrally formed.
18. A solar distillation/desalination device as characterised in claim 16 or claim 17 wherein said upright body is a substantially enclosed hemispherical body, said condensation 25 collection surface being a ceiling of said hemispherical body.
19. A solar distillation/desalination roof system including a solar distillation device as characterised in any one of claims 16-18. WO 2009/073929 PCT/AU2008/001832 13
20. A solar distillation/desalination roof system as characterised in claim 19 wherein each peak of said corrugated roof sheets includes one of said solar distillation devices.
21. A solar distillation/desalination roof system as characterised in claim 19 or claim 20 wherein said system further includes a liquid storage area adapted to store liquid which 5 accumulates in each of said liquid collection areas.
22. A solar distillation/desalination device for use in irrigating a ground surface, said device characterised by an extruded structure adapted to be placed in the proximity of said ground surface to be irrigated, said structure including a box-like cross section having at least one liquid holding area and at least one liquid collection area, whereby solar energy 10 that is absorbed by said device heats the liquid holding area and causes evaporation of said liquid, said structure including a surface to collect condensate resulting from said evaporation, and direct said condensate into said liquid collection area.
23. A solar distillation/desalination device as characterised in claim 22 further including a means of dispersing liquid which accumulates in said liquid collection area into the 15 surrounding ground surface.
24. A solar distillation/desalination device as characterised in claim 22 or claim 23 further including a means of assisting solar heating of the liquid holding area.
25. A device as characterised in claim 24 wherein said means of assisting solar heating is in the form of a lens used to focus the solar energy onto said liquid. 20
26. A device as characterised in claim 25 wherein said lens is a Fresnel lens.
27. A device as characterised in claim 24 or claim 25 wherein said liquid holding area includes a surface for absorbing some of said focused heat to prevent damage to said device.
28. A device as characterised in claim 27 wherein said heat absorbing surface is a ceramic 25 surface.
AU2008336266A 2007-12-13 2008-12-12 Solar distillation device Abandoned AU2008336266A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2007906754A AU2007906754A0 (en) 2007-12-13 Solar Distillation Device
AU2007906754 2007-12-13
AU2008336266A AU2008336266A1 (en) 2007-12-13 2008-12-12 Solar distillation device
PCT/AU2008/001832 WO2009073929A1 (en) 2007-12-13 2008-12-12 Solar distillation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2008336266A AU2008336266A1 (en) 2007-12-13 2008-12-12 Solar distillation device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU2010100471A Division AU2010100471B4 (en) 2007-12-13 2010-05-17 Solar Distillation Device

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AU2008336266A1 true AU2008336266A1 (en) 2009-06-18

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ES2401516B1 (en) 2011-03-22 2014-03-27 Universitat Politècnica De Catalunya SOLAR DESALINATION PLANT OF SEA WATER, SALMUERAS OR WASTEWATER.
WO2012142737A1 (en) 2011-04-18 2012-10-26 Empire Technology Development Llc Dissipation utilizing flow of refreigerant
WO2013142827A1 (en) * 2012-03-22 2013-09-26 Meder Glenn E Non-electric distiller
US10065130B2 (en) 2013-05-28 2018-09-04 Empire Technology Development Llc Thin film systems and methods for using same
WO2014190478A1 (en) * 2013-05-28 2014-12-04 Empire Technology Development Llc Evaporation-condensation systems and methods of manufacturing and using the same
RU2655892C1 (en) * 2017-03-06 2018-05-29 Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Solar pool-type desalter
CN109204906B (en) * 2018-06-25 2021-09-10 青海省水利水电勘测规划设计研究院有限公司 Liquid collecting device for field exploration or geological exploration and liquid collecting method thereof
NL2021883B1 (en) * 2018-10-26 2020-05-13 Cornelis Jozef Hendriks Henricus WATERING SYSTEM WITH HELMET SPACE

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GB1497953A (en) * 1976-02-16 1978-01-12 Yao Chen Tsai Method and a device for producing distilled water using solar energy
US4010080A (en) * 1976-03-03 1977-03-01 Yaw Jenn Tsay Solar powered distilling device
US4292136A (en) * 1979-08-28 1981-09-29 Spie-Batignolles Device for desalting sea or brackish water by using solar energy
US4756802A (en) * 1984-11-19 1988-07-12 Finney David S Solar distillation device
WO1991007558A1 (en) * 1989-11-16 1991-05-30 Renewable Energy Authority Victoria Ridge cap

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MK1 Application lapsed section 142(2)(a) - no request for examination in relevant period