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Calculation method of temperature response of pile foundation spiral buried pipe under the condition of groundwater seepage

A technology of groundwater seepage and temperature response, applied in calculation, computer-aided design, application, etc., can solve the problem that there is no method for calculating the temperature response of underground medium, and achieve the effect of increasing heat transfer and enhancing heat transfer capacity.

Active Publication Date: 2020-05-19
山东中瑞新能源科技有限公司
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Problems solved by technology

[0005] At present, there are few studies on pile-buried pipes under the condition of groundwater seepage, and there is no method to calculate the temperature response of the underground medium when the groundwater seeps at three-dimensional velocity in the underground space

Method used

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  • Calculation method of temperature response of pile foundation spiral buried pipe under the condition of groundwater seepage
  • Calculation method of temperature response of pile foundation spiral buried pipe under the condition of groundwater seepage
  • Calculation method of temperature response of pile foundation spiral buried pipe under the condition of groundwater seepage

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with accompanying drawing.

[0038]Both the pile foundation and the spiral heat exchange tube embedded in it have corresponding geometric dimensions, and parameters such as the diameter and length of the pile foundation, spiral diameter, spiral pitch, and spiral length all affect the heat transfer of the pile buried pipe. The subsurface medium can be considered as a homogeneous medium with the same thermophysical parameters. The present invention proposes an analytical calculation method for the temperature response of energy piles under the condition of groundwater seepage. For pile foundation spiral buried pipes with different geometric parameters, when groundwater flows through, under the action of heat conduction and convection compound heat transfer, the underground medium removes The temperature response at any point outside the spiral heat exchange tube can be obtained.

[0039] In addition, th...

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Abstract

The invention discloses a method for calculating the temperature response of a pile foundation spiral buried pipe under the condition of groundwater seepage. According to the temperature response generated by a point heat source in the medium when groundwater flows in a three-dimensional velocity in an infinite uniform medium, the three-dimensional groundwater seepage condition is obtained. Calculation method of temperature response of single pile foundation spiral buried pipe in underground medium. When the groundwater flows through the pile-buried pipe group at a three-dimensional velocity, the temperature response generated at any point in the underground medium at any time is the superposition of the groundwater seepage and the heat transfer of the pile-buried pipe group, and the calculation formula of the temperature response can be obtained. Moreover, in the process of using the reverse reasoning calculation method to obtain the groundwater seepage velocity, set the range of the magnitude and direction of the groundwater flow velocity, continuously extract values ​​from it, arrange points around the borehole, and calculate all points within a certain period of time The sum of variances between the values ​​and the experimental values, when the variance sum of most points reaches the minimum, the actual flow velocity and direction of groundwater can be obtained.

Description

technical field [0001] The invention belongs to the professional engineering technical field of building environment and energy application, and in particular relates to a method for calculating the temperature response of a pile foundation spiral buried pipe under the condition of groundwater seepage. Background technique [0002] The ground source heat pump technology uses the underground medium as the cold and heat source, and discharges heat to the ground and absorbs heat from the ground in summer and winter. The temperature of the underground medium fluctuates little throughout the year, and it is an ideal cold and heat source. Therefore, this type of heat pump has the advantages of energy saving and environmental protection. It belongs to the renewable energy air conditioning system and has been widely used. The geothermal heat exchanger part is the main symbol that distinguishes the ground source heat pump system from other types of heat pump systems. At present, the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/08
CPCG06F30/367G06F2119/08F24T10/15F24T2201/00Y02E10/10
Inventor 张文科崔萍满意崔玉萍方肇洪
Owner 山东中瑞新能源科技有限公司
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