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

作者：MA Zui-liang · 发表于：Building Science · 年份：2011 · 被引用次数：4 · 研究领域：Heat Transfer and Optimization、Geothermal Energy Systems and Applications、Refrigeration and Air Conditioning Technologies

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.