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In-situ thermal response testing method for layered rock and soil thermophysical properties

A technology of thermal response testing and thermophysical properties, applied in the direction of thermal development of materials, etc., can solve problems such as the inability to specify the measurement of thermal physical properties of rock and soil layers

Active Publication Date: 2014-12-24
北京华清荣昊新能源开发有限责任公司
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Problems solved by technology

[0004] The invention proposes an in-situ thermal response test method for thermal physical properties of rock-soil layers, which solves the problem that the thermal-physical property test methods in the prior art cannot measure the thermal-physical property parameters of specified rock-soil layers

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  • In-situ thermal response testing method for layered rock and soil thermophysical properties

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The in-situ thermal response test method for the thermophysical properties of rock-soil layers in this embodiment includes the following steps:

[0052] first step, such as figure 1 As shown, the buried pipe heat exchanger 1 is connected with the thermal response tester 2 to form a heating circuit, and the buried pipe heat exchanger 1 is measured by the distributed optical fiber temperature measurement system 3, and the thermal response tester 2 is used...

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Abstract

The invention provides an in-situ thermal response testing method for layered rock and soil thermophysical properties. According to the in-situ thermal response testing method for the layered rock and soil thermophysical properties, a thermal response test is performed on an assembled buried tube heat exchanger, the theoretical value of the average temperature of a group of circulating fluids is calculated through introduction of buried tube parameters and related test data in a formula, the actual value of the average temperature of the group of circulating fluids is measured through equipment, and the theoretical value and the actual value are calculated with a parameter estimation method, so that layered rock and soil thermal thermophysical property parameters can be determined. The in-situ thermal response testing method for the layered rock and soil thermophysical properties puts forwards a column heat source model and is applicable to tests of the layered thermophysical property parameters. The change of thermal resistance in drilled holes in the depth direction and the change of the heat exchange power in the drilled holes in the depth direction are considered, and the rock and soil thermophysical property parameters at a certain layer can be calculated accurately.

Description

technical field [0001] The invention relates to the technical field of ground source heat pumps, in particular to an in-situ thermal response test method for thermophysical properties of stratified rock and soil. Background technique [0002] In the prior art, the testing methods for geotechnical thermophysical parameters are to regard the U-shaped buried pipe heat exchanger as equivalent as a line source model, and calculate the overall thermophysical properties of the line source model by measuring relevant data. parameters, this model method can only make an overall judgment on the thermophysical parameters of rock and soil. In actual construction, the buried depth of the buried tube heat exchanger is relatively deep, often above 100m, which leads to uneven distribution of rock and soil within the buried range of the buried tube heat exchanger, and the underground water content The groundwater seepage velocity is also different, resulting in different thermophysical para...

Claims

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Application Information

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IPC IPC(8): G01N25/20
Inventor 毕文明
Owner 北京华清荣昊新能源开发有限责任公司
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