Solar pond powered liquid desiccant evaporative cooling

Esam Elsarrag, Opubo N. Igobo, Yousef Alhorr and Philip A. Davies

Renewable and Sustainable Energy Reviews, 2016, vol. 58, issue C, 124-140

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.

Keywords: Liquid desiccant; Dehumidifier; Evaporative cooling; Regenerator; Solar pond (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:rensus:v:58:y:2016:i:c:p:124-140

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DOI: 10.1016/j.rser.2015.12.053

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