丙烷用于直膨式太阳能热泵实验系统设计

Test System Design for a Direct-expansion Solar-assisted Heat Pump Using Propane as Refrigerant

针对碳氢化合物作为制冷剂的可燃性问题,该文基于微通道传热技术,设计了一种以丙烷为制冷剂的直膨式太阳能热泵实验系统。该系统主要由微通道太阳能集热/蒸发器、定频压缩机、微通道冷凝器、蓄热水箱、电子膨胀阀、数据采集及控制系统等组成。开发了基于组态王的数据监控系统,实现了对温度、压力、太阳辐射强度、环境风速、功率等参数的在线监测、实时数据动态显示、历史数据记录查询、自动控制和远程访问等功能。实践表明,实验系统将太阳能集热器直接用作热泵蒸发器,有效提高了系统总效率,可以开发出一系列综合性、设计性和研究性实验,有助于发挥学生的主观能动性,培养学生的综合、创新能力,满足专业教学和科研需要。

Aiming at the flammability of hydrocarbons as refrigerants, this paper designs a direct expansion solar heat pump experimental system based on micro-channel heat transfer technology with propane as refrigerant. This system is mainly composed of micro- channel solar collector/evaporator, fixed frequency compressor, micro-channel condenser, hot water storage tank, electronic expansion valve, data acquisition and control system. The data monitoring system based on Kingview has been developed to realize online monitoring of various parameters, such as temperature, pressure, solar radiation intensity, ambient wind speed and power, realtime data dynamic, historical data record query, automatic control and remote access. Practice shows that the experimental system directly uses the solar collector directly as a heat pump evaporator, which efficiency improves the overall efficiency of the system, and can develop a series of comprehensive, design and research experiments, which can help students to exert their subject initiative and cultivate. Students comprehensive and innovative abilities meet the needs of professional teaching and research.