河北地区地埋管地源热泵适宜性分区研究

Suitability partition of Ground source heat pump in Hebei areas

地埋管地源热泵以浅层地热能资源作为供冷冷源和供热热源,是建筑节能领域内最高效的技术之一。近年来地埋管地源热泵技术在河北省发展尤为迅速,但也出现了诸多问题。地埋管地源热泵的适宜性研究得到越来越多人的重视。本文通过对河北地区(主要是京津以南河北地区)地质构造以及水文条件的勘察了解,运用河北省地源热泵检测中心与河北省科学院能源研究所联合开发的的岩土热响应测试仪,对该地区做了大量的热响应试验测试,积累了丰富的数据资料。利用二维线热源传热模型采用"恒功率"和"恒温法"对测试项目的岩土导热系数和单位埋深的换热量做了相应的求解计算,结合地质构造从经济性和换热效率两方面综合考虑对地埋管地源热泵在河北地区的适宜性进行了一定的划分,得到并不是所有的地方都适合做地埋管地源热泵项目。研究旨在为河北地区地热能的开发与利用起到一定的推动作用,为河北省地埋管地源热泵热泵的设计、施工等方面提供一定的参考。

Ground source heat pump is one of the most efficient technologies in the field of building energy saving,which uses the shallow geothermal energy as heat and cold source. In recent years,ground source heat pump technology develops especially rapidly in Hebei prov- ince,there also had many problems. The study on suitability of ground source heat pump is gaining attention from more and more people. In this paper, the geological survey and hydro- logical conditions of Hebei region （mainly south of Beijing and Tianjin） was explored,and the thermal response test equipment which was jointly developed by Hebei test center of ground source heat pump and Hebei Province Academy of Sciences was used to do a wealth of thermal response test ,and a large quantity of sources and data were calculated. The method of ＂con- stant power＂ and ＂isothermal＂ and Line heat transfer model were used ,and the thermal con- ductivity of soil and the heat exchange of unit depth were calculated, combined with geological tectonic situation, both the economy and efficiency of heat transfer were considered, and the suitability partition of Ground source heat pump used in Hebei was analyzed, the results show that ground source heat pump was not suitable for all places. The purpose of this paper is to promote the development and utilization of geothermal energy in Hebei province and provides a reference for the design and construction of ground source heat pump.