The thermal response test (TRT) is a highly developed and widespread method for measuring ground thermal conductivity using ground source heat exchangers (GHEs). However, its application is mostly limited to vertical ground heat exchangers (VGHEs), with very few previous studies on TRT with horizontal configurations. Therefore, the objective of this article is to evaluate the applicability of TRT for estimating the ground thermal conductivity with horizontal ground heat exchangers (HGHEs) at shallow depths. The short duration of the TRT prevents thermal interference between the ground surface and the horizontal heat exchanger, allowing the use of the same equation to calculate the ground thermal conductivity with VGHEs and HGHEs. This advantage is not presented when evaluating the long-term performance of GHEs, a procedure that is generally more complex in horizontal systems. For the test, the HGHE consisted of a straight HDPE pipe arranged in a U-shape (depth 2.5 m, length 36 m). The effective ground thermal conductivity obtained with the TRT has a value of 0.72$\mathrm{W}/\mathrm{m}·\mathrm{K}$. This result is in good agreement with the thermal conductivity values of sandy loam, the type of soil at the test site.

热响应测试 (TRT) 是一种使用地源换热器 (GHE) 测量地面热导率的高度发达和广泛使用的方法。然而，它的应用主要限于垂直地面换热器（VGHEs），以前很少有关于水平配置的 TRT 的研究。因此，本文的目的是评估 TRT 用于估算浅层水平地埋换热器 (HGHE) 的地下热导率的适用性。TRT 持续时间短，可防止地表和水平换热器之间的热干扰，允许使用相同的方程来计算 VGHE 和 HGHE 的地面热导率。在评估 GHE 的长期绩效时，没有体现这种优势，在水平系统中通常更复杂的程序。为进行测试，HGHE 由排列成 U 形（深度 2.5 m，长度 36 m）的 HDPE 直管组成。使用 TRT 获得的有效地面导热系数值为 0.72$\mathrm{宽}/\mathrm{米}·\mathrm{钾}$. 该结果与试验场土壤类型砂壤土的热导率值非常吻合。