IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0384641
(2010-07-20)
|
등록번호 |
US-8603223
(2013-12-10)
|
국제출원번호 |
PCT/IB2010/001757
(2010-07-20)
|
§371/§102 date |
20120118
(20120118)
|
국제공개번호 |
WO2011/010205
(2011-01-27)
|
발명자
/ 주소 |
- Saha, Bidyut Baran
- Ng, Kim Choon
- Chakraborty, Anutosh
- Thu, Kyaw
|
출원인 / 주소 |
- National University of Singapore
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
A water desalination system including at least one pair of evaporators, said pair including a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapor; at least three adsorption beds in selective vapor communication with each evaporator, said adsorption b
A water desalination system including at least one pair of evaporators, said pair including a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapor; at least three adsorption beds in selective vapor communication with each evaporator, said adsorption beds arranged to reversibly adsorb the water vapor from the corresponding evaporator; said adsorption beds in selective vapor communication with a condenser, and in heat transfer communication with a heat source for selectively desorbing the adsorbed water vapor; said condenser arranged to condense the water vapor to desalinated water; wherein said system is arranged to sequentially connect, for a pre-determined period, each evaporator to a corresponding adsorption bed, and the heat source to the third bed.
대표청구항
▼
1. A water desalination system comprising: at least one pair of evaporators, said pair comprising a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapour;wherein the high pressure evaporator is configured to operate at a higher pressure than the low p
1. A water desalination system comprising: at least one pair of evaporators, said pair comprising a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapour;wherein the high pressure evaporator is configured to operate at a higher pressure than the low pressure evaporator;at least three adsorption beds in selective vapour communication with each evaporator, said adsorption beds arranged to reversibly adsorb the water vapour from the corresponding evaporator;said adsorption beds in selective vapour communication with a condenser, and in heat transfer communication with a heat source for selectively desorbing the adsorbed water vapour;said condenser arranged to condense the water vapour to desalinated water;wherein said system is arranged to sequentially connect, for a pre-determined period, each evaporator to a corresponding adsorption bed, and the heat source to the third bed. 2. The water desalination system according to claim 1, wherein the predetermined period is a function of the desorption rate of a saturated adsorption bed. 3. The water desalination system according to claim 1, wherein the predetermined period is a function of the rate of saturation of an adsorption bed. 4. The water desalination system according to claim 1, wherein the predetermined period is the greater of the period to desorb a saturated adsorption bed and the period to saturate un unsaturated adsorption bed. 5. The water desalination system according to claim 1, further including a water circulation system in heat transfer communication with at least one evaporator. 6. The water desalination system according to claim 5, wherein water received from the water circulation system being directable to an external application including: residential or commercial air conditioning or industrial cooling system. 7. A method for desalinating water, the method comprising the steps of: evaporating saline water in a high pressure and a low pressure evaporator to produce water vapour, wherein the high pressure evaporator operates at a higher pressure than the low pressure evaporator;directing the water vapour from the high pressure evaporator to a first adsorption bed, and adsorbing water vapour until an adsorption medium within said first bed is saturated;directing the water vapour from the low pressure evaporator to a second adsorption bed and adsorbing the water vapour by an adsorption medium within said second bed;heating a saturated adsorption medium within a third adsorption bed to desorb water vapour from said medium;directing the desorbed water vapour to a condenser, and condensing said water vapour to desalinated water. 8. The method according to claim 7, further including the steps of: redirecting the water vapour from the high pressure evaporator to the second adsorption bed until the adsorption medium within said bed is saturated;redirecting the water vapour from the low pressure evaporator to the third adsorption bed;heating the adsorption medium within the first adsorption bed to desorb water vapour from said medium;directing the desorbed water vapour to the condenser, andcondensing said water vapour to desalinated water. 9. A cooling system comprising: at least one pair of evaporators, said pair comprising a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapour during an evaporative cycle;wherein the high pressure evaporator is configured to operate at a higher pressure than the low pressure evaporator;a first and second water circulation system in heat transfer communication with said respective high and low pressure evaporators;wherein following an evaporative cycle, the system is arranged to collect cooled water from the first water circulation system and chilled water from the second water circulation system. 10. The system according to claim 9, further including an air handling unit, such that the first water circulating system further includes a heat transfer portion for projecting a pipe section encapsulating a flow of the cooled water into an air current within said air handling unit. 11. The system according to claim 9, further including an air handling unit, such that the second water circulating system further includes a heat transfer portion for projecting a pipe section encapsulating a flow of the chilled water into an air current within said air handling unit. 12. The system according to claim 9 wherein the cooled water is in the temperature range 18° C. to 27° C. 13. The system according to claim 9 wherein the chilled water is in the temperature range 4° C. to 10° C. 14. The system according to claim 9, further including: at least three adsorption beds in selective vapour communication with each evaporator, said adsorption beds arranged to reversibly adsorb the water vapour from the corresponding evaporator;said adsorption beds in selective vapour communication with a condenser, and in heat transfer communication with a heat source for selectively desorbing the adsorbed water vapour;said condenser arranged to condense the water vapour to desalinated water;wherein said system is arranged to sequentially connect, for a pre-determined period, each evaporator to a corresponding adsorption bed, and the heat source to the third bed. 15. A method of cooling comprising the steps of: providing at least one pair of evaporators, said pair comprising a high pressure and a low pressure evaporator, wherein the high pressure evaporator operates at a higher pressure than the low pressure evaporator;evaporating saline water in each evaporator to produce water vapour during an evaporative cycle;providing a first and second water circulation system in heat transfer communication with said respective high and low pressure evaporators;following an evaporative cycle, collecting cooled water from the first water circulation system and chilled water from the second water circulation system. 16. The method according to claim 15, further including the steps of: introducing the first water circulation system into an air stream of an air handling unit, and;cooling and dehumidifying said air stream as a result of heat transfer between the cooled water and the air stream. 17. The method according to claim 15, further including the steps of: introducing the second water circulation system into an air stream of an air handling unit, and;chilling said air stream as a result of heat transfer between the cooled water and the air stream.
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