1st Nordic Drying Conference - NDC'01, Trondheim, Norway, June 27-29, 2001

NOVEL CONVECTIVE DRYER COMBINED WITH CHEMICAL HEAT PUMP Hironao Ogura1, Hiroyuki Kage1 and Arun S. Mujumdar 2 1. Dept. of Applied Chemistry, Kyushu Institute of Technology 1-1, Sensui-cho, Tobata, Kitakyushu 804-8550 JAPAN e-mail: ogura@tobata.isc.kyutech.ac.jp 2. Dept. of Mechanical and Production Engineering, National University of Singapore, 10 Kent Ridge Crescent, SINGAPORE 119260 e-mail: mpeasm@nus.edu.sg Keywords: chemical heat pump dryer, energy saving, heat storage, calcium oxide ABSTRACT A chemical heat pump dryer (CHPD) has been proposed by the authors as a novel convective dryer utilizing a chemical heat pump (CHP). In earlier studies we have shown by simulation and fundamental experimental studies that the CHP unit can be used to recover a part of the exhaust heat from convective dryers and reuse it by storage and/or upgrading of the temperature and even with cooling dehumidification. In this paper some standard experimental results on the effects of heat exchange condition on the production of hot dry air for batch drying using the heat enhancement mode of the CHP are presented.

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