Abstract
Liquid desiccant cooling systems (LDCS) are energy efficient means of providing cooling, especially when powered by low-grade thermal sources. In this paper, the underlying principles of operation of desiccant cooling systems are examined, and the main components (dehumidifier, evaporative cooler and regenerator) of the LDCS are reviewed. The evaporative cooler can take the form of direct, indirect or semi-indirect. Relative to the direct type, the indirect type is generally less effective. Nonetheless, a certain variant of the indirect type - namely dew-point evaporative cooler - is found to be the most effective amongst all. The dehumidifier and the regenerator can be of the same type of equipment: packed tower and falling film are popular choices, especially when fitted with an internal heat exchanger. The energy requirement of the regenerator can be supplied from solar thermal collectors, of which a solar pond is an interesting option especially when a large scale or storage capability is desired.
| Original language | English |
|---|---|
| Pages (from-to) | 124-140 |
| Number of pages | 17 |
| Journal | Renewable and sustainable energy reviews |
| Volume | 58 |
| Early online date | 12 Jan 2016 |
| DOIs | |
| Publication status | Published - May 2016 |
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Keywords
- dehumidifier
- evaporative cooling
- liquid desiccant
- regenerator
- solar pond
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Solar pond powered liquid desiccant evaporative cooling. / Elsarrag, Esam; Igobo, Opubo N.; Alhorr, Yousef; Davies, Philip A.
In: Renewable and sustainable energy reviews, Vol. 58, 05.2016, p. 124-140.Research output: Contribution to journal › Article
TY - JOUR
T1 - Solar pond powered liquid desiccant evaporative cooling
AU - Elsarrag, Esam
AU - Igobo, Opubo N.
AU - Alhorr, Yousef
AU - Davies, Philip A.
PY - 2016/5
Y1 - 2016/5
N2 - Liquid desiccant cooling systems (LDCS) are energy efficient means of providing cooling, especially when powered by low-grade thermal sources. In this paper, the underlying principles of operation of desiccant cooling systems are examined, and the main components (dehumidifier, evaporative cooler and regenerator) of the LDCS are reviewed. The evaporative cooler can take the form of direct, indirect or semi-indirect. Relative to the direct type, the indirect type is generally less effective. Nonetheless, a certain variant of the indirect type - namely dew-point evaporative cooler - is found to be the most effective amongst all. The dehumidifier and the regenerator can be of the same type of equipment: packed tower and falling film are popular choices, especially when fitted with an internal heat exchanger. The energy requirement of the regenerator can be supplied from solar thermal collectors, of which a solar pond is an interesting option especially when a large scale or storage capability is desired.
AB - Liquid desiccant cooling systems (LDCS) are energy efficient means of providing cooling, especially when powered by low-grade thermal sources. In this paper, the underlying principles of operation of desiccant cooling systems are examined, and the main components (dehumidifier, evaporative cooler and regenerator) of the LDCS are reviewed. The evaporative cooler can take the form of direct, indirect or semi-indirect. Relative to the direct type, the indirect type is generally less effective. Nonetheless, a certain variant of the indirect type - namely dew-point evaporative cooler - is found to be the most effective amongst all. The dehumidifier and the regenerator can be of the same type of equipment: packed tower and falling film are popular choices, especially when fitted with an internal heat exchanger. The energy requirement of the regenerator can be supplied from solar thermal collectors, of which a solar pond is an interesting option especially when a large scale or storage capability is desired.
KW - dehumidifier
KW - evaporative cooling
KW - liquid desiccant
KW - regenerator
KW - solar pond
UR - http://www.scopus.com/inward/record.url?scp=84954096135&partnerID=8YFLogxK
U2 - 10.1016/j.rser.2015.12.053
DO - 10.1016/j.rser.2015.12.053
M3 - Article
AN - SCOPUS:84954096135
VL - 58
SP - 124
EP - 140
JO - Renewable and sustainable energy reviews
JF - Renewable and sustainable energy reviews
SN - 1364-0321
ER -