Solar pond powered liquid desiccant evaporative cooling

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:58

Review

Elsarrag, Esam¹  Igobo, Opubo N.²  Alhorr, Yousef¹  Davies, Philip A.² 

[1] Gulf Org Res & Dev, Qatar Sci & Technol Pk, Doha, Qatar

[2] Aston Univ, Sch Engn & Appl Sci, Sustainable Environm Res Grp, Birmingham B4 7ET, W Midlands, England

关键词: Liquid desiccant;    Dehumidifier;    Evaporative cooling;    Regenerator;    Solar pond;   

DOI  :  10.1016/j.rser.2015.12.053

来源: Elsevier

【 摘 要 】

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. (C) 2016 Published by Elsevier Ltd.

【 授权许可】

Free