直接式原生污水源热泵的自控调节特性  

SELF-CONTROL CHARACTERISTICS OF THE UNTREATED SEWAGE SOURCE HEAT PUMP WITH DIRECT MODE

作　　者：秦娜[1] 赵军[1] 崔俊奎[1] 

机构地区：[1]天津大学机械工程学院热能工程系,天津300072

出　　处：《太阳能学报》2011年第1期112-119,共8页Acta Energiae Solaris Sinica

基　　金：国家十一五科技支撑重大计划项目(2006BAJ03A06)

摘　　要：主要研究了直接式原生污水源热泵冬季供暖工况下的自控调节特性。通过对系统的自动控制可知,当室内温度从20℃降到18℃时,频率控制器启动,系统各参数维持稳定,房间热负荷约为15kW,控制器未做出大的调节;随着室内温度从18℃上升,压缩机的频率降低,通过PID的调节控制,室内温度保持在18℃附近,此时热负荷为9.5kW,压缩机耗功降低了48%,COP从3.4上升到4.1。当室内温度在16～20℃之间变化时,控制器随室内温度高于或低于设定温度,自动做出调节。为了维持温度在18℃附近,房间的热负荷量约为11.5kW,功耗3kW,COP为4,蒸发器和冷凝器的传热系数分别为1192和292W/(m^2·K)。The self-control characteristics of untreated sewage source heat pump with direct mode in winter were discussed. When the room temperature falls from 20 to 18℃, every parameter of system keeps stable under the PID adjustment, and the heating load is about 15kW. When the temperature goes up from 18%, the compressor frequency reduces in order to keep the room temperature around 18℃. Then the heating load falls to 9.5kW, the compressor consumed power reduces by 48% and COP changes from 3.4 to 4.1. When the room temperature ranges from 16 to 20℃ the frequency reduces or rises with the temperature difference between room temperature and the setting temperature of 18℃. It is obtained by control that the heating load, consumed power and COP are about 11.5, 3 and 4kW, respectively at the room temperature of 18℃. And the heat transfer coefficients of evaporator and condenser are 1192 and 292W/（m^2 ·K）, respectively through the calculation.

关 键 词：原生污水源热泵 直接式 自控 室内温度 

分 类 号：TK323[动力工程及工程热物理—热能工程]