原生污水源热泵机组性能优化
Performance optimization of urban sewage source heat pump units
摘要：
针对污水源热泵制冷剂侧阀门切换、换热器采用蒸发冷凝两用换热器等当前的技术状况与存在问题,指出了发展趋势与研发方向。探讨了城市污水源热泵机组创新设计的技术关键：污水直接进换热器、变频螺杆压缩机及压缩机可变内容积比设计。改进设计后污水源热泵机组性能明显提高。
关键词：污水源热泵,制冷剂,切换,换热器,变频,可变内容积比
Abstract：
Based on the technical status, in aspects as valve switch on refrigerants side and dual purpose heat exchanger for evaporating and condensation, and the existed problems, points out the development trends and research direction. Discusses the crucial techniques of innovation design such as waste water entering the unit directly, variable frequency screw compressor and variable inner volume ratio of compressor. The performance can be significantly improved by adopting the above techniques.
Keywords:sewagesourceheatpump,refrigerant,switch,heatexchanger,variablefrequency,variableinnervolume