Journal
RENEWABLE ENERGY
Volume 109, Issue -, Pages 602-612Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2017.03.077
Keywords
Metal organic frameworks; Analytical modeling; Adsorption chiller
Funding
- Center of Research Excellence in Renewable Energy
- Center of Carbon Capture and Sequestration, King Fand University of Petroleum and Minerals
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Adsorption-based cooling systems are becoming increasingly popular due to a continuous rise in the worldwide demand for refrigeration and air-conditioning. This study aims to enhance the cooling performance of a solar-powered adsorption chiller using a novel multi-walled carbon nanotube (MWCNT)/MIL-100(Fe) composite adsorbent. A numerically validated modeling approach has been employed to evaluate the coefficient of performance (COP) and specific cooling power (SCP) for the two-bed adsorption chiller. For solar energy input, a flat-plate solar collector has been employed with three different configurations of glaze (a) single-glazed cover, (b) double-glazed cover, and (c) single-glazed cover with transparent insulation material. It has been observed that the MWCNT/MIL-100(Fe) composite adsorbent containing 6.1% MWCNTs results in a maximum achievable cooling power of 455 Wkri for the adsorption chiller. The proposed MWCNT/MIL-100(Fe) composite adsorbent can be considered as a successful potential replacement of the traditionally used silica gel- and zeolite-based adsorbents for use in the next generation of high-performance solar adsorption chillers. (C) 2017 Elsevier Ltd. All rights reserved.
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