GB2104398A - Re-circulating solar desalinator - Google Patents
Re-circulating solar desalinator Download PDFInfo
- Publication number
- GB2104398A GB2104398A GB08218810A GB8218810A GB2104398A GB 2104398 A GB2104398 A GB 2104398A GB 08218810 A GB08218810 A GB 08218810A GB 8218810 A GB8218810 A GB 8218810A GB 2104398 A GB2104398 A GB 2104398A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brine
- cover
- desalinator
- corrugations
- tray
- 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.)
- Granted
Links
- 239000012267 brine Substances 0.000 claims abstract description 36
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 36
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000889 atomisation Methods 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims description 2
- 235000012206 bottled water Nutrition 0.000 abstract 1
- 239000003651 drinking water Substances 0.000 abstract 1
- 230000002262 irrigation Effects 0.000 abstract 1
- 238000003973 irrigation Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- 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
- Y02A20/124—Water desalination
-
- 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
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/211—Solar-powered water purification
-
- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
This Solar Desalinator is intended for use in desert locations remote from piped water supplies but adjacent to salty or brackish water. It uses a re-circulating principle to improve efficiency by trapping the latent heat of the condensing water. The transparent cover 1 is formed hollow to allow circulation of brine prior to evaporation on the tray below. There is a drip feed 4 from the lower side of the cover to assist atomisation of the brine. Sills are provided on the lower side of the cover to catch the condensate. This Desalinator is to be made in modular units one metre square, providing sufficient potable water for a family, or to be used in chains for agricultural irrigation. <IMAGE>
Description
SPECIFICATION
Re-circulating solar desalinator
Solar Desalinators usually consist of a sloping panel of transparent material covering a tray containing brine. The Sun's rays passing through the cover causes evaporation of the brine. The vaour then condenses on the lower side of the transparent cover and runs down the slope of the cover into a gutter. The disadvantage of this type of Desalinator is that the latent heat of the vapour given up when it condenses on the cover is re-radiated and lost.
Also the slope of the cover increases its volume and area. The water in the tray below must be very shallow for efficient evaporation.
Stills of this type produce about 1 Gal/m2 per day and have not been economic. Efficiency could be increased if the heat of the Sun was re-circulated, very much as heat is re-circulated in a conventional oil-fired water distillation plant.
Referring to Figure 1; The desalinator described in this invention has a transparent cover in two sections joined so as to be watertight, or formed as a single, hollow, extruded section. The top surface, or section, is flat (1), the bottom surface, or section, has corrugations (2) allowing brine to circulate within the cover. This brine circulating in the cover cools the water vapour contacting its lower surface and produces condensation so that the latent heat of the vapour is retained and heats the brine prior to it passing down to the tray below (5). Attachments or pipes (3) and (4) consist of means for the delivery and outflow of brine respectively. Attachment (4) has perforations in its lower extension as shown to sprinkle brine into the lower tray (5).
Holes or other form of attachment are provided in the lower surface of the cover (6) through which screws of Nylon, or other rustproof material, or form of adhesive, or mouldings can be used to secure sills passing along the length of the lower point of the corrugations. These screws, or other forms of attachment have spacers of increasing length so that condensate which forms on the lower surface of the cover will run down into them and then along their length, falling into a gutter (7).
Suitable supports are provided for the cover (9).
The lower tray (5) has an outlet for brine to ensure that the brine level within it is very shallow. This outlet (8) also enables another of this type of Desalinator to be couple to it in a chain to further improve efficiency by making use of heated brine.
The corrugations on the lower side of the cover, when full of brine, act as a lens to concentrate the Sun's rays passing through the cover, thus assisting in the evaporation of the brine on the tray below. The brine dripping from the attachment (4) on to the lower tray causes spattering of the droplets thus assisting atomisation.
The lower tray (5) is mounted on four legs to prevent loss of heat to the ground. Successive Desalinators in a chain can have shorter legs to allow flow of brine down the chain.
1. A Solar powered Desalinator or distillation device for the purpose of producing purified distillate making use of a re-circulating principle to avoid loss of the latent heat of liquid evaporated by the Sun.
2. A Desalinator as in 1 with a transparent cover formed so as to allow the circulation of brine within it prior to evaporation and capable of absorbing the latent heat of vapour condensing on its lower side.
3. A Desalinator as in 1 In which the concavity of the corrugations of the cover when fitting with brine act as a lens to concentrate the Sun's rays.
4. A Desalinator as in 1 in which the drip feed from the lower attachment to the cover produces atomisation of the brine to assist evaporation.
5. A Desalinator as in 1 in which sills are provided on the corrugations of the lower side of the cover, running along them so as to catch condensate running down the corrugations.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. A Solar powered Desalinator or distillation device for the purpose of producing purified distillate making use of a re-circulating principle to avoid loss of the latent heat of liquid evaporated by the Sun.
2. A Desalinator as in 1 with a transparent cover formed so as to allow the circulation of brine within it prior to evaporation and capable of absorbing the latent heat of vapour condensing on its lower side.
3. A Desalinator as in 1 In which the concavity of the corrugations of the cover when fitting with brine act as a lens to concentrate the Sun's rays.
4. A Desalinator as in 1 in which the drip feed from the lower attachment to the cover produces atomisation of the brine to assist evaporation.
5. A Desalinator as in 1 in which sills are provided on the corrugations of the lower side of the cover, running along them so as to catch condensate running down the corrugations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08218810A GB2104398B (en) | 1981-07-30 | 1982-06-24 | Re-circulating solar desalinator |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8123294 | 1981-07-30 | ||
| GB08218810A GB2104398B (en) | 1981-07-30 | 1982-06-24 | Re-circulating solar desalinator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2104398A true GB2104398A (en) | 1983-03-09 |
| GB2104398B GB2104398B (en) | 1985-01-03 |
Family
ID=26280292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08218810A Expired GB2104398B (en) | 1981-07-30 | 1982-06-24 | Re-circulating solar desalinator |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2104398B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009873A1 (en) * | 2007-07-18 | 2009-01-22 | David Holroyd | Solar water desalination unit with superheater and heat exchangers |
| GB2528975A (en) * | 2014-08-08 | 2016-02-10 | Ivan Mendez | Desalination and underground irrigation system |
-
1982
- 1982-06-24 GB GB08218810A patent/GB2104398B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009873A1 (en) * | 2007-07-18 | 2009-01-22 | David Holroyd | Solar water desalination unit with superheater and heat exchangers |
| GB2528975A (en) * | 2014-08-08 | 2016-02-10 | Ivan Mendez | Desalination and underground irrigation system |
| GB2528975B (en) * | 2014-08-08 | 2021-05-26 | Mendez Ivan | Desalination and underground irrigation system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2104398B (en) | 1985-01-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |