Experimental study and development of a low-cost 1 kW adsorption chiller using composite adsorbent based on natural mesoporous material

Fang He, Katsunori Nagano and Junya Togawa

Energy, 2020, vol. 209, issue C

Abstract: This study aims to develop a low-cost and highly efficient adsorption chiller (AHP). A laboratory-scale AHP with a capacity of 1 kW and transparent body was developed to observe the valve’s operation and condensed water. A natural mesoporous material, WSS impregnated with 20 wt % LiCl was used as an adsorbent to reduce the initial cost and filled into aluminum corrugated heat exchangers (HEX). Foundation performance experiments were conducted, and the COP of 0.45 and SCP of 0.41 kW/kg were obtained under the following experimental conditions: regeneration at 80 °C, condensation, and sorption at 30 °C, chilled water of 15 °C, and cycle time of 14 min. Further, heat recovery was introduced and experimentally studied to reduce the regeneration heat amount, and the heat balance for this AHP was evaluated. It was confirmed that two types of heat recoveries could improve the COP for this AHP up to 0.54 when the outlet temperature of both adsorbers was 55 °C. The COP could be further improved to 0.57, based on the calculation for the heat balance. This AHP has advantages of high SCP as compared with AHPs in other formal studies, although some details need to be studied in the future.

Keywords: Adsorption chiller and heat pump (AHP); High efficiency; Natural mesoporous material; Wakkanai siliceous shale (WSS); Heat recovery (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (13)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:209:y:2020:i:c:s0360544220314729

DOI: 10.1016/j.energy.2020.118365

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