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Drying Technology
An International Journal
Volume 17, 1999 - Issue 7-8
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Original Articles

SIMULATION OF HYDRATION/DEHYDRATION OF CaO/Ca(OH)2 CHEMICAL HEAT PUMP REACTOR FOR COLD/HOT HEAT GENERATION

Hironao Ogura Dept. of Applied Chemistry, Kyushu Institute of Technology, Tobaia, Kitakyushu, 804-8550, JAPAN
,
Rui Shimojyo Dept. of Applied Chemistry, Kyushu Institute of Technology, Tobaia, Kitakyushu, 804-8550, JAPAN
,
Hiroyuki Kage Dept. of Applied Chemistry, Kyushu Institute of Technology, Tobaia, Kitakyushu, 804-8550, JAPAN
,
Yoshizo Matsuno Dept. of Applied Chemistry, Kyushu Institute of Technology, Tobaia, Kitakyushu, 804-8550, JAPAN
&
Arun S. Mujumdar Dept. of Chemical Engineering, McGill University, Montreal, Quebec, H3A 2B2, CANADA
Pages 1579-1592 | Published online: 27 Apr 2007
 
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ABSTRACT

A chemical heat pump (CHP) utilizes reversible reactions involving significant endothermic and exothermic heats of reaction in order to develop a heat pump effect by storing and releasing energy while transforming it from chemical to thermal energy and vice versa. In this paper, we present a mathematical model and its numerical solution for the heat and mass transport phenomena occurring in the reactant particle bed of the CHP for heat storage and cold/hot heat generation based on the CaO/Ca(OH)2 reversible hydration/dehydration reaction

Transient conservation equations of mass and energy transport including chemical kinetics are solved numerically subject to appropriate boundary and initial conditions to examine the influence of the mass transfer resistance on the overall performance of this CHP configuration. These results are presented and discussed with the aim of enhancing the CHP performance in next generation reactor designs.

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