Thermal accumulation effect of ground-coupled heat pump system

作者：Fuxin Niu, Long Ni, Yao Yang, Jiang Yiqiang, MA Zui-liang · 年份：2011 · DOI：10.1109/icetce.2011.5776109 · 被引用次数：8 · 研究领域：Geothermal Energy Systems and Applications、CO2 Sequestration and Geologic Interactions、Heat Transfer and Optimization

A software TRNSYS is used to simulate operation characteristics of ground-coupled heat pump for an office building. It analysis the soil temperature changes and ground source heat pump system efficiency last several years in different climates conditions. The results show that the greater the difference between cooling load and heat load, the greater the annual average temperature of soil increases, the system efficiency down faster. The soil average temperature raises 6.5 degree after the system running five years. The temperature decreases 2.4 degree in Qiqihar. To ensure long-term stable operation of the system, proposing solution to thermal accumulation problem of geothermal ground source heat pump system.