Experimental study of a solid adsorption cooling system using flat-tube heat exchangers as adsorption bed

W. S. Chang*, Chi-Chuan Wang, C. C. Shieh

*Corresponding author for this work

Research output: Contribution to journalArticle

70 Scopus citations

Abstract

In this paper, a solid adsorption cooling system with silica gel as the adsorbent and water as the adsorbate was experimentally studied. To reduce the manufacturing costs and simplify the construction of the adsorption chiller, a vacuum tank was designed to contain the adsorption bed and evaporator/condenser. Flat-tube type heat exchangers were used for adsorption beds in order to increase the heat transfer area and improve the heat transfer ability between the adsorbent and heat exchanger fins. Under the standard test conditions of 80 °C hot water, 30 °C cooling water, and 14 °C chilled water inlet temperatures, a cooling power of 4.3 kW and a coefficient of performance (COP) for cooling of 0.45 can be achieved. It has provided a specific cooling power (SCP) of about 176 W/(kg adsorbent). With lower hot water flow rates, a higher COP of 0.53 can be achieved.

Original languageEnglish
Pages (from-to)2195-2199
Number of pages5
JournalApplied Thermal Engineering
Volume27
Issue number13
DOIs
StatePublished - 1 Sep 2007

Keywords

  • Adsorption cooling
  • Flat-tube type heat exchanger

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