Effects of heat exchange condition on hot air production by a chemical heat pump dryer using CaO/H2O/Ca(OH)2 reaction

被引：62

作者：

Ogura, H

Yamamoto, T

Kage, H

Matsuno, Y

Mujumdar, AS

机构：

[1] Kyushu Inst Technol, Dept Appl Chem, Kitakyushu, Fukuoka 8048550, Japan

[2] Natl Univ Singapore, Dept Mech & Prod Engn, Singapore 119260, Singapore

来源：

CHEMICAL ENGINEERING JOURNAL | 2002年 / 86卷 / 1-2期

关键词：

novel dryer; chemical heat pump; convective dryer; heat and mass transfer; heat recovery; efficiency;

D O I：

10.1016/S1385-8947(01)00265-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Results of an exploratory experimental study of a chemical heat pump (CHP) assisted convective dryer are presented. The CaO/H2O/ Ca(OH)(2) gas-solid reversible hydration/dehydration reaction is used to store and recover heat from the dryer exhaust air to enhance the thermal efficiency of the dryer. The CHP unit can be operated to increase the temperature level and also to dehumidify the air, which is a particularly attractive feature for drying. Results are presented for a single cylindrical reactor to study the effects of the heat exchange conditions on hot air production. The results show that the hot air production is improved by enlarging the heat exchanger, increasing the heat transfer rates by use of stainless mesh and increasing the air flow rate. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：3 / 10

页数：8

共 10 条

[1]

KANAMORI M, 1996, P 5 WORLD C CHEM ENG, P67

[2] KINETIC-STUDY OF CA(OH)2/CAO REVERSIBLE THERMOCHEMICAL REACTION FOR THERMAL-ENERGY STORAGE BY MEANS OF CHEMICAL-REACTION [J].