采用替代工质的吸收式制冷运行特性  

OPERATION CHARACTERISTICS OF ABSORPTION REFRIGERATION USING ALTERNATIVE WORKING FLUIDS

作　　者：陈曙辉[1] 陈光明[1] 郑飞[1] 张红线[1] 

机构地区：[1]浙江大学制冷与低温工程研究所,杭州310027

出　　处：《低温工程》1999年第6期22-26,共5页Cryogenics

基　　金：国家自然科学基金

摘　　要：运用热力学第一定理、质量守恒定理及相平衡原理， 建立了一套可用于模拟采用新工质的吸收制冷系统的运行特性的程序。程序中系统各部件的数学模型采用集总参数法建立，系统中制冷剂气液相之间的平衡用改进型ＰＴ方程［１］计算，溶液与上方蒸气之间的相平衡用活度系数模型ＵＮＩＦＡＣ法来预测。运用该程序， 分别计算了以Ｒ１３４ａ＋ Ｒ３２（摩尔比３∶７）／ＤＭＦ和Ｒ２２／ＤＭＦ为工质对时的运行特性，并对计算结果进行了系统的分析。This paper describes a performance simulation program for absorption refrigeration system.It is based upon component mathematical model in lumped parametric form.It uses improved PT equation of state [1] to describe the phase equilibria between the vapor and liquid phase of refrigerant and activity coefficient model UNIFAC method to predict phase equilibria between the refrigerant vapor and its solution in organic absorbent.The model is capable of simulating the steady characteristics of absorption refrigeration machine.Both Working pairs R134a+R32/DMF and R22/DMF are calculated and the results are analyzed.

关 键 词：吸收制冷 混合制冷剂 性能模拟 制冷 模型 

分 类 号：TB616[一般工业技术—制冷工程]