Effects of depolymerization rate on system performance of paraldehyde chemical heat pump

Takayuki Watanabe, Haruo Kawasaki, Atsushi Kanzawa

Research output: Contribution to journalArticlepeer-review

Abstract

The paraldehyde chemical heat pump system combines the effects of a chemical reaction and a vapor-compression. The paraldehyde chemical heat pump is used as a cooling system. This study is on the effects of the paraldehyde depolymerization rate on the cooling rate, the coefficient of performance (COP), and the required amount of catalyst in the endothermic reactor. An increase in the amount of paraldehyde reacted in the endothermic reactor results in improvement in the COP and the cooling rate, but leads to an increase in the required amount of catalyst weight. The required amount of catalyst is 0.4 kg, having the effectiveness factor of 0.6, for the heat pump system with COP of 6 and cooling rate of 3.8-4.0 kW, for a flow rate of 4.0 g s-1 in the cycle.

Original languageEnglish
Pages (from-to)35-36
Number of pages2
JournalSekiyu Gakkaishi (Journal of the Japan Petroleum Institute)
Volume42
Issue number1
Publication statusPublished - Dec 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology

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