提高绝热吸收器压力的风冷技术分析  

Effective Analysis of Air Cooled Technique by Heightening Adiabatic Absorber Pressure

作　　者：欧汝浩[1] 陈焕新[1] 张来强[1] 

机构地区：[1]华中科技大学制冷与低温工程系

出　　处：《建筑热能通风空调》2006年第6期33-37,共5页Building Energy & Environment

基　　金：湖南省自然科学基金项目(04JJ3086);中国博士后基金资助项目(2003034121)

摘　　要：吸收器是吸收式制冷机的关键部分,传统吸收器基本采用水冷却。本文在传热传质分离技术的基础上,通过热力学理论分析,提出提高绝热吸收器压力的方法,建立了制冷系统仿真模型,并通过模型的求解,分析了提高绝热吸收器压力对实现吸收式风冷技术的有效性。研究结果表明,在溶液浓度不变甚至有所降低的情况下,提高绝热吸收器的压力,可显著提高风冷冷却器的传热温差,有效降低系统再循环倍率,且系统对外界空气温度敏感度较低,从而能很好地实现风冷技术。Absorber is the most important component in lithium - bromide absorption refrigerator; traditional absorber is cooled by water. Based on the technique of heat and mass transfer separation, a new method of heightening absorption pressure is presented in this study through the analysis of thermodynamics, and then the model of simulating refrigeration system is established. The result shows that in the condition of the solution concentration keeping changeless or even degrading, heightening the pressure of the adiabatic absorber, the difference in temperature of air cooled radiator rises markedly, the recirculating ratio degrades greatly, and the sensitivity of system to external air temperature is relatively feeble. So the way of air cooled can be realized very well.

关 键 词：吸收式制冷 传热传质分离 风冷 吸收压力 

分 类 号：TB657[一般工业技术—制冷工程]