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热泵直供采暖两相流毛细管网性能研究
引用本文:王振辉,杜少勋,季文军,高 伟.热泵直供采暖两相流毛细管网性能研究[J].河北工业科技,2015,32(4):347-352.
作者姓名:王振辉  杜少勋  季文军  高 伟
作者单位:1. 河北科技大学机械工程学院,河北石家庄,050018
2. 中国市政工程华北设计研究总院,天津,300000
摘    要:通过在用户自定义程序增加两相流动中质量源项和能量源项的方法,建立了毛细管网内气-液转化的CFD计算模型,对小管径光滑铜管内R22的冷凝性能进行研究。根据CFD模型,计算了不同气相进口流速下R22蒸汽的冷凝过程。得到了压力损失、冷凝系数和流速的关联曲线。对小管径毛细管网辐射末端的设计提供了理论依据,对制冷剂流速选择有一定指导意义。

关 键 词:供热与供燃气工程  热泵  毛细管网  供暖  冷凝  两相流
收稿时间:2015/4/2 0:00:00
修稿时间:2015/4/16 0:00:00

Study of two-phase flow performance of capillary net during heat pump heating
WANG Zhenhui,DU Shaoxun,JI Wenjun and GAO Wei.Study of two-phase flow performance of capillary net during heat pump heating[J].Hebei Journal of Industrial Science & Technology,2015,32(4):347-352.
Authors:WANG Zhenhui  DU Shaoxun  JI Wenjun and GAO Wei
Abstract:In this paper, the gas-liquid conversion of CFD calculation model in capillary network is established by adding the quality source terms and energy source terms of two-phase flow in user-defined functions. Condensation performance of R22 in smooth tubes of small diameter is researched. The condensation process of R22 is calculated on different gaseous phase inlet flow velocity by CFD model. The pressure drop, the condensation coefficient and the velocity correlation curve are obtained. It provides a theory basis for the radiation end design of small diameter capillary net, and a guidance for the choosing of refrigerant flow rate.
Keywords:supply of heat and fuel gas  heat pump  capillary net  heating  condensation  two-phase flow
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