现场热响应试验测试数据对比及应用分析

Comparison and Application of In-situ Thermal Conductivity Test Data

勘查评价浅层地热能地质条件及换热能力是高效开发浅层地热能资源的关键基础,对高效、可持续利用浅层地热能起着举足轻重的作用。不同区域地质条件千差万别导致地下换热效果不同,目前现场热响应试验,是地埋管地源热泵系统区域调查评价和应用项目场地勘查中,采用的重要勘查手段。通过现场热响应试验获得地温场初始地温、岩土体的热物性参数,计算得出每个地埋孔的换热能力即换热功率,可为评价地埋管地源热泵系统适宜区域的浅层地热换热功率提供依据,指导地埋管地源热泵系统地下换热系统设计。本文主要对地层初始地温、不同测试功能测试所得数据,进行了对比及应用分析,对指导现场热响应试验的科学合理应用,具有重要的参考意义。

Exploration and evaluation of shallow geothermal geological conditions and heat transfer capacity is the key basis for efficient development of shallow geothermal resources,which plays an important role in the efficient and sustainable utilization of shallow geothermal energy.Different geological conditions in different regions lead to different underground heat transfer effects.At present,in-situ thermal conductivity test is an important exploration method used in regional investigation and evaluation of buried pipe ground source heat pump system and site exploration of applied projects.The original ground temperature and thermal physical parameters of rock and soil are obtained by field thermal response test.Calculating heat transfer capacity of vertical ground heat exchanger.It can provide a basis for evaluating the shallow geothermal heat exchanger power in the suitable area of ground source heat pump system with buried pipes,and guiding the design of ground heat exchange system for ground source heat pump system with buried pipe.This paper mainly analyses the comparison and application of the data obtained from the original ground temperature and different test functions.It has important reference significance for guiding the scientific and rational application of field thermal response test.