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首页> 外文会议>ICCR 2008 第四届国际低温与制冷工程大会论文集 >Research on the Water System Characteristic of Water Source Side of Deep Well Water Source Heat Pump System
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Research on the Water System Characteristic of Water Source Side of Deep Well Water Source Heat Pump System

机译：深井水源热泵系统水源侧水系统特性研究

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摘要

During heating period in winter,to resolve the problems about injection and intake well design,injection and groundwater change situation of deep well water source heat pump system, the experimental method was employed to study optimization quantity matching intake well with injection well,injection situation during the heating period and groundwater temperature change effect on performance of heat pump.At last,some important conclusions were drawn about groundwater system. Compared with flow rate 70m3/h and 100m3/h, the total injection flow rate of injection well at 40m3/h was 86 400m3, increased 9120m3 and 21 600m3 respectively.To meet 130m3/h maximum injection and pumping of the request,two injection wells and one intake well were adopted in the project.Supply water temperature of deep well was very stable and had decreased only 0.5°C at heating period.When return water temperature of deep well reduced, COP value of heat pump unit declined gradually. When return water temperature of deep well was 7°C,COP value of heat pump unit at 50% capacity was only 2.47. So, return water temperature of deep well should not be lower than 7°C so that heat pump unit could run efficiently. In the whole heating period, changes scope of COP value of heat pump was 3.13-3.56.
机译：为了解决冬季采暖期间深井水源热泵系统注水口，进水口设计，注水量和地下水变化情况等问题，采用实验方法研究了进水口与注水井的最佳配水量，注水时的注水情况。最后，得出了有关地下水系统的一些重要结论。与70m3 / h和100m3 / h的流量相比，40m3 / h的注入井的总注入流量为86400m3，分别增加了9120m3和21600m3。为满足最大注入量和抽水量130m3 / h，两次注入该项目采用一口井和一口进水口，深井的供水温度非常稳定，加热期间仅下降了0.5°C，当深井的回水温度降低时，热泵机组的COP值逐渐下降。当深井回水温度为7°C时，热泵机组在50％容量时的COP值仅为2.47。因此，深井的回水温度不应低于7°C，以使热泵单元能够有效运行。在整个加热期间，热泵的COP值变化范围为3.13-3.56。

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