...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy and Buildings >Prediction of ground thermal diffusivity from thermal response tests
【24h】

Prediction of ground thermal diffusivity from thermal response tests

机译：根据热响应测试预测地面热扩散率

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ground-coupled heat pump (GCHP) systems are being increasingly utilized in recent years. There are several important parameters in the design of GCHP systems. As ground thermal conductivity is one of the most crucial parameters, it should be measured by conducting in-situ thermal response tests (TRTs). This paper presents the experimental results and analysis of thermal response tests to estimate the ground thermal conductivity and ground thermal diffusivity for three types of ground heat exchangers (GHEs), including U, 2U, and W-type ground heat exchangers (GHEs). Three different types of GHEs were installed in a dredged soil deposit, and continuous TRTs were conducted for 48 h. This study suggests a method to predict ground thermal diffusivity using the infinite line source model from the TRTs. Furthermore, soil samples were collected from different ground layers, and ground thermal properties were measured using laboratory tests. The equivalent ground thermal conductivity and ground thermal diffusivity measured through laboratory tests were compared with the in-situ TRT results that were newly derived in this paper. In addition, ground thermal diffusivity and ground thermal conductivity values that were obtained through research were used as input parameters in numerical analysis. The in-situ TRT results were numerically modeled using the finite element method. (C) 2019 Elsevier B.V. All rights reserved.
机译：近年来，地面耦合热泵（GCHP）系统得到越来越多的利用。 GCHP系统的设计中有几个重要参数。由于地面导热系数是最关键的参数之一，因此应通过进行现场热响应测试（TRT）进行测量。本文介绍了实验结果和热响应测试分析，以估计三种类型的地面热交换器（GHE）（包括U，2U和W型地面热交换器（GHE））的地面导热系数和地面热扩散系数。在疏soil的土壤沉积物中安装了三种不同类型的GHE，并连续进行了48小时的TRT。这项研究提出了一种使用来自TRT的无限线源模型预测地面热扩散率的方法。此外，从不同的地面层收集土壤样品，并使用实验室测试测量地面的热性能。通过实验室测试测得的等效地面热导率和地面热扩散率与本文新推导的现场TRT结果进行了比较。此外，通过研究获得的地热扩散率和地热导率值被用作数值分析的输入参数。使用有限元方法对原位TRT结果进行了数值建模。 （C）2019 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号