A GRAPH-THEORYBASEDMULTI-ZONEMODELOFFIN-AND-TUBE HEATEXCHANGERSFORMICROGROOVEROOMAIRCONDITIONERS
To quickly design a microgroove room air conditioner,a heat exchanger model applicable for system simulation with fast speed,high accuracy and versatility is needed.This paper presents a graph-theory based multi-zone model for fin-and-tube heat exchangers.In this model,a directed graph and a breadth first traversal algorithm are proposed to describe the refrigerant flow circuits and automatically generatethe flow paths,respectively,capableto calculate flexible user defined refrigerant circuits; a sequencing method is developed to rearrange the flow paths and control the calculation order,addressing the issue ofrefrigerant and air coupling of different flow paths; a stepped correction method is established,improving the accuracy and keeping the advantages of fast computation speed of multi-zone model.The presented model is validated by experiments,and the deviations of the predicted heat capacity of heat exchangers from the measured ones are within 5%.
Small diameter tubes Multi-zone model Fin-and-tube Heat exchanger Graph-theory
Tao Ren Haoran Sun Guanghui Xia Guoliang Ding Yongxin Zheng Yifeng Gao Ji Song
Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China International Copper Association Shanghai Office,Shanghai 200020,China
国内会议
珠海
英文
164-169
2016-11-01（万方平台首次上网日期，不代表论文的发表时间）