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Estimation of soil and grout thermal properties through a TSPEP (two-step parameter estimation procedure) applied to TRT (thermal response test) data

机译:通过应用于TRT(热响应测试)数据的TSPEP(两步参数估算程序)估算土壤和水泥浆的热性能

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摘要

In this paper, a versatile TSPEP (two-step parameter estimation procedure) based on a three-dimensional numerical model of a geothermal system is presented. The procedure is applied to both simulated and experimental TRT (thermal response test) data in order to restore the grout and soil thermal conductivities and volumetric heat capacities. The TSPEP is essentially a two-step process. The first step uses the parameter estimation procedure, in the early transient regime to restore the grout thermal conductivity and volumetric heat capacity. The values from the first step are used as the input values in the second step, in which the parameter estimation procedure is applied to the late transient regime to restore the soil thermal conductivity and volumetric heat capacity. Further iterations of these two steps can be used to improve the accuracy of the procedure and are discussed in this paper. The time separation used between the estimation of the soil properties and the estimation of the grout properties partially uncouples the two problems and makes the estimation of these four parameters feasible. A criterion to select the time separation is discussed and validated in this paper.
机译:本文提出了一种基于地热系统三维数值模型的通用TSPEP(两步参数估计程序)。该程序应用于模拟和实验TRT(热响应测试)数据,以恢复灌浆和土壤的热导率以及体积热容。 TSPEP本质上是一个两步过程。第一步使用参数估计程序,在早期瞬态状态下恢复灌浆的导热系数和体积热容。第一步中的值用作第二步中的输入值,在第二步中,将参数估计过程应用于后期瞬态状态,以恢复土壤的导热系数和体积热容。这两个步骤的进一步迭代可用于提高过程的准确性,并将在本文中进行讨论。在土壤性质的估计和灌浆性质的估计之间使用的时间间隔部分地解开了两个问题,并使这四个参数的估计可行。本文讨论并验证了选择时间间隔的标准。

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  • 来源
    《Energy》 |2011年第2期|p.839-846|共8页
  • 作者单位

    Department of Industrial Engineering, University of Parma, Parco Area delle Scienze, 181/A, 43124 Parma, Italy;

    Department of Industrial Engineering, University of Parma, Parco Area delle Scienze, 181/A, 43124 Parma, Italy;

    Department of Industrial Engineering, University of Parma, Parco Area delle Scienze, 181/A, 43124 Parma, Italy;

    Department of Industrial Engineering, University of Parma, Parco Area delle Scienze, 181/A, 43124 Parma, Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ground coupled heat pumps; parameter estimation; thermal response test; ground heat exchanger; numerical modelling;

    机译:地面耦合热泵参数估计热响应测试地面热交换器数值模拟;

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