双级压缩高温热泵换热器型号优化设计仿真
Optimization of heat exchanger type for two-stage compression high temperature heat pumps
摘要：
介绍了高温热泵系统形式及换热器初步设计，编制了系统仿真程序，得到了8种换热器型号下系统COP、换热器传热系数、水侧压降等关键参数随换热面积的变化关系。针对该热泵系统，给出了一定换热面积范围内较优的换热器型号。
关键词：高温热泵 换热器 仿真 换热面积 长径比
Abstract：
Presents types of the high temperature heat pump system and the preliminary design of the heat exchanger, and programs for the system simulation, and obtains the variety patterns of several critical parameters including COP, heat transfer coefficient, water pressure drop with heat transfer area under eight different heat exchanger types. Provides a better heat exchanger type in definite range of heat transfer area for this system.
Keywords:high temperature heat pump, heat exchanger, simulation, heat transfer area, slenderness ratio