江水源热泵尾水排放方式优选试验研究

Experimental Analysis on Optimal Tail Water Discharge Method of River Water Source Heat Pump

为研究江水源热泵尾水在不同排放方式下对江河水域温升的影响,利用数字式温度传感器构建实时温度传感器网络,针对江水源热泵尾水淹没式、表面式和射流式3种排水方式及其在12种出流方式下江河水域的温升情况进行了模拟试验研究。对各种排放方式下的温升均值、温升方差、最高温升值、超温升均值点数等指标项采用加权平均法计算优选值,并结合三维温升图对试验结果进行了分析。结果表明,从整体上看射流式排放方式优于表面式和淹没式排放方式,双口出流方式优于单口出流方式,其中对河道水域温升影响最小的排放方式为表面式排水顺流双口出流方式。

In order to study the influence on water temperature raise of river water source heat pump tail water discharged in different methods,the real sensor network is established by using digital temperature sensors.The simulation experiments of different discharging methods of river water source heat pump are carried out,including submerged-type discharge,surface-type discharge and jet-type discharge with 12 effluent ways.By using weighted average method,the preferred values of such factors as the average temperature raise,the temperature raise variance,the biggest temperature raise value,and the number of temperature measure points above the temperature raise average value are calculated.Moreover,the experiment results are analyzed by the three-dimensional figures of water temperature raise,which shows that jet-type discharge is better than submerged-type discharge and surface-type discharge,and the double-port way is better than single-port way.In addition,the double-port way along with the current in surface-type discharge method is the one that exerts least influence on river water temperature raise.