Parametric study of a silica gel-water adsorption refrigeration cycle - the influence of thermal capacitance and heat exchanger UA-values on cooling capacity, power density, and COP

Elisa C. Boelman, Bidyut B. Saha, Takao Kashiwagi

研究成果: ジャーナルへの寄稿会議記事査読

22 被引用数 (Scopus)

抄録

The influence of heat exchanger UA-values (adsorber/desorber, evaporator, and condenser) is investigated for an adsorption chiller, with consideration given to the thermal capacitance of the adsorber/desorber by means of a lumped-parameter cycle simulation model developed by the authors and co-workers for the single-stage silica gel-water adsorption chiller. The closed-cycle-type chiller, for use in air conditioning, is driven by low-grade waste heat (85°C [185°F]) and cooled by water at 31°C (88°F) and operates on relatively short cycle times (420 seconds adsorption/desorption; 30 second adsorber/desorber sensible cooling and heating). The results showed cycle performance to be considerably affected by the thermal capacitance and UA-value of the adsorber/desorber, which is attributed to the severe sensible cooling/heating requirements resulting from batched cycle operation. The model is also sensitive to the evaporator UA-value - but to a lesser extent. The condenser UA-value is the least sensitive parameter due to the working pair adsorption behavior in the temperature range defined for desorption and condensation.

本文言語英語
ページ(範囲)139-148
ページ数10
ジャーナルASHRAE Transactions
103
1
出版ステータス出版済み - 1月 1 1997
外部発表はい
イベントProceedings of the 1997 ASHRAE Winter Meeting - Philadelphia, PA, USA
継続期間: 1月 26 19971月 29 1997

!!!All Science Journal Classification (ASJC) codes

  • 建築および建設
  • 機械工学

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