地表水源热泵塑料螺旋管换热器面积设计  

Heat Exchanger Area Design of Plastic Spiral Pipe of Surface Water Source Heat Pump

作　　者：押淑芳[1] 倪龙[2] 马最良 

机构地区：[1]国核电力规划设计研究院,北京100094 [2]哈尔滨工业大学热泵空调技术研究所,哈尔滨150090

出　　处：《建筑科学》2011年第4期84-88,94,共6页Building Science

基　　金："十一五"国家科技支撑计划项目(2006BAJ03A05)

摘　　要：现有地表水源热泵换热器设计资料粗糙且不完全符合我国地表水的特点,应用误差较大。本文通过塑料螺旋管换热器设计计算简化数学模型的大量数值计算,可知在工程设计值范围内,影响其换热能力的显著因素是换热器进出口温差和地表水体流速,而换热介质种类、换热介质流速和地表水体温度等因素对换热器换热能力的影响不大。在此基础上,给出了供热、供冷工况的基本线算图和换热器进出口温差的修正系数公式、地表水体流速修正系数表。在保持基本线算图简便特性的同时,大大扩展了线算图的使用范围。本文结论可为我国地表水源热泵设计提供参考。The existing design material of heat exchanger for surface water source heat pump（SWSHP） is not detail enough,and is disagreement with the characteristics of surface water in China.The application of the material may result in large error.In this paper,through numerical calculations based on simplified mathematic model for the design of plastic spiral pipe heat exchanger,the factors that would significantly influence the heat exchange capacity were found out,including the inlet and outlet temperature difference of heat exchanger and the velocity of surface water.While other factors had little influence,such as type and velocity of heat exchange medium,surface water temperature,etc..Based on the discussion,the basic heating /cooling design nomograms,the amendment formula for temperature difference of heat exchanger and the amendment table for surface water velocity were presented.Therefore,the applicability of the basic design nomograms was greatly expanded with their convenient performance maintained.The conclusions of this paper would provide useful references for SWSHP design in China.

关 键 词：地表水源热泵 塑料螺旋管 换热器 设计线算图 修正 

分 类 号：TQ051.5[化学工程]