周期性冷热换热器的热惯性及设计要点  

Thermal Inertia and Design Points of Periodic Heat Exchangers

作　　者：王声海 闫东 齐继微 

机构地区：[1]中国天辰工程有限公司黑龙江分公司,黑龙江哈尔滨150076 [2]北京泽华化学工程有限公司,北京100095

出　　处：《辽宁化工》2014年第8期1007-1008,共2页Liaoning Chemical Industry

摘　　要：常规的换热器操作中,物料的冷却或加热通常是固定不变的,物料温度呈单调性变化,换热器运行达到稳态后其本体的温度也达到稳值,因此换热器的热负荷只用于物料的相变及温度变化。如果冷却和加热周期性交替进行,则换热器本体温度的周期性变化也必然要消耗一定的热负荷,这种现象是热惯性的表现。由于周期性冷热交替的特殊性,此类换热器设计中应充分考虑其热惯性及相应的设计要点。In the conventional heat exchanger, cooling or heating material is usually fixed, the temperature of the material assumes monotone change, after reaching steady state, the temperature of heat exchanger itself also reaches the steady value, so the heat load of heat exchanger is used only for phase change and temperature change. If cooling and heating is periodic alternation, the periodical change of heat exchanger＇s body temperature also consumes a certain amount of heat load; this phenomenon is the performance of thermal inertia. Due to the particularity of periodic alternating, the thermal inertia and design points of this kind of heat exchanger design should be fully considered.

关 键 词：热惯性 周期性 热负荷 换热器 

分 类 号：TQ201[化学工程—有机化工]