摘要
以R22为制冷工质,根据质量守恒、动量守恒和能量守恒等热力学基本定理建立了空调冷凝器的稳态分布参数模型.在空调系统设计工况下,对冷凝器过热气体区、气液两相区和过冷液体区分别进行了模拟计算.根据计算结果分析了冷凝器的流动和传热特性,结果表明气液两相区对冷凝器流动和传热的影响较大.与冷凝器的实际尺寸对比表明,模拟计算的结果是合理的.
From basic thermophysical laws, a steady distributed parameter model of an air-conditioning condenser was constructed, in which R22 was taken as working fluid. The regions of the superheated gas, two-phase fluid and supercool liquid in the condenser were simulated respectively under the designed conditions of air-conditioning system. The flow and heat transfer performances of the condenser were analyzed. The results show that the two-phase fluid region influences the flow and heat transfer performances of the condenser markedly. Compared with the dimensions of an actual condenser, the calculated results are reasonable and helpful to the optimal design of condensers.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第9期42-44,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词
冷凝器
分布参数模型
流动
传热
condenser
distributed parameter model
flow
heat transfer
