Experimental investigation on composite adsorbent – Water pair for a solar-powered adsorption cooling system

L. Q. Zhu, C. Y. Tso, K. C. Chan, C. L. Wu, Christopher Y.H. Chao, J. Chen, W. He, S. W. Luo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)

Abstract

In this study, a solar-powered adsorption cooling system (ACS) using vehicle radiators as an adsorbent bed was built and the system performance was studied experimentally in the Guangzhou climate. 6 single-glazed flat plate solar collectors with the total area of 12 m2 were utilized to collect solar energy. Zeolite 13X/CaCl2 composite adsorbent – water was used as the adsorbent – adsorbate working pair. The composite adsorbent was coated on the fins of the vehicle radiators using an electrostatic coating method. The results show that an adsorbent coating layer with a thickness of 0.5 mm was evenly distributed, and strongly adhered. The effect of the duration of the pre-heating phase and solar collector area on the cooling performance of the ACS was investigated. A pre-heating phase of 2 h was proposed and a minimum area of solar collectors of 6 m2 was recommended for a 1–2 kW scale ACS. A specific cooling power (SCP) of 208.2 W/kg of the ACS and an energy efficiency ratio (EER) of 4.5 driven by solar energy were achieved with a pre-heating phase of 2 h, and a maximum solar intensity of 880 W/m2.

Original languageEnglish
Pages (from-to)649-659
Number of pages11
JournalApplied Thermal Engineering
Volume131
DOIs
Publication statusPublished - 25 Feb 2018

Keywords

  • Composite adsorbent
  • Experimental investigation
  • Pre-heating phase
  • Solar-powered adsorption cooling system
  • Specific cooling power

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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