污水源热泵制热模型及外在参数影响  

Model and influencing factors analysis of external parameters of sewage source heat pump

作　　者：程小松 彭冬根[1] 李霜玲 周君明[1] 

机构地区：[1]南昌大学建筑工程学院,南昌330031

出　　处：《土木建筑与环境工程》2017年第4期26-32,共7页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金(51266010)~~

摘　　要：分别建立了污水源热泵四大部件(蒸发器、压缩机、冷凝器、膨胀阀)模型,并进行耦合。采用MATLAB软件进行编程模拟,分别计算了污垢热阻、污水流量、污水进口温度变化对热泵冬季制热性能的影响。结果显示:当污垢热阻在0~1(m2·K)/kW范围内变化,系统制热量由353kW降低到301kW,降低了14.8%;当污水入口温度由8℃升高到20℃时,系统制热量由320kW升高到423kW,升高了32.1%;当污水流量由10kg/s升到20kg/s时,系统制热量由339kW增加到364kW等。过程中热泵COP在3.6~4.8范围内变化,说明污水源热泵具有较好的热性能。Four main device models （evaporator, condenser, compressor and expansion valve） of the sewagesource heat pump were developed and coupled. The MATLAB software was used for this simulation, and the effects of fouling resistance, sewage flow and sewage inlet temperature on the heating performance of sewage-source heat pump were calculated respectively. The results revealed that while the fouling resistance changed from 0 to l（m2 · K）/kW, the heating capacity of the device was decreased from 353 kW to 301 kW, decreased by 14. 8%. While the sewage inlet temperature increased from 8 to 20 ℃, the heating capacity of the device was increased from 320 kW to 423 kW, increased by 32. 1%. While the sewage flow increased from 10 kg/s to 20 kg/s, the heating capacity of the device was increased from 339 kW to 364 kW. The COP of this heat pump changed from 3.6 to 4.8 in the process, which illustrated the good heating performance of the sewage source heat pump.

关 键 词：污水源热泵 污垢热阻 污水流量 制热性能 

分 类 号：TU833.1[建筑科学—供热、供燃气、通风及空调工程]