Design and performance of a solar-powered heating and cooling system using silica gel/water adsorption chiller

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

In this paper, a solar-powered compound system for heating and cooling was designed and constructed in a golf course in Taiwan. An integrated, two-bed, closed-type adsorption chiller was developed in the Industrial Technology Research Institute in Taiwan. Plate fin and tube heat exchangers were adopted as an adsorber and evaporator/condenser. Some test runs have been conducted in the laboratory. Under the test conditions of 80 °C hot water, 30 °C cooling water, and 14 °C chilled water inlet temperatures, a cooling power of 9 kW and a COP (coefficient of performance for cooling) of 0.37 can be achieved. It has provided a SCP (specific cooling power) of about 72 W/(kg adsorbent). Some field tests have been performed from July to October 2006 for providing air-conditioning and hot water. The efficiency of the collector field lies in 18.5-32.4%, with an average value of 27.3%. The daily average COP of the adsorption chiller lies in 33.8-49.7%, with an average COP of 40.3% and an average cooling power of 7.79 kW. A typical daily operation shows that the efficiency of the solar heating system, the adsorption cooling and the entirely solar cooling system is 28.4%, 45.2%, and 12.8%, respectively.

Original languageEnglish
Pages (from-to)2100-2105
Number of pages6
JournalApplied Thermal Engineering
Volume29
Issue number10
DOIs
StatePublished - 1 Jul 2009

Keywords

  • Adsorption cooling
  • Silica gel
  • Solar

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