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Ground source heat pump vertical buried pipe heat transfer three dimensional value model and establishment method thereof

A technology of ground source heat pump and three-dimensional numerical value, applied in image data processing, electrical digital data processing, special data processing applications, etc., can solve the problems of lack of application parameters, long calculation time, high cost, etc., achieve high calculation accuracy and speed up calculation Speed, ease of design and application effects

Inactive Publication Date: 2017-10-20
山东省地质矿产勘查开发局第五地质大队
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, as an engineering application, it is too complicated, high in cost, long in calculation time, and lacks some application parameters, such as geothermal gradient, layered parameters, heat exchange pipe form, etc.

Method used

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  • Ground source heat pump vertical buried pipe heat transfer three dimensional value model and establishment method thereof
  • Ground source heat pump vertical buried pipe heat transfer three dimensional value model and establishment method thereof
  • Ground source heat pump vertical buried pipe heat transfer three dimensional value model and establishment method thereof

Examples

Experimental program
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Effect test

Embodiment

[0137] attached Figure 4 It is the temperature response of rock and soil longitudinal section of a single buried pipe heat exchange hole after different loading times. The left figure shows that when the loading time is short, the vertical layered characteristics of the geothermal gradient outside the center of the heat exchange hole are obvious; the right The figure shows that when the loading time is long, the original temperature gradient of the formation and the loading load jointly affect the temperature change of the rock and soil mass.

[0138] attached Figure 5 It is the temperature distribution state of the fluid inside the heat exchange tube. The left figure is the constant heat flow condition. The time of the four curves from bottom to top is 24h, 48h, 72h, and 96h respectively. The temperature difference at this place is the same at the four time points; the right figure is the constant temperature condition, and the time of the four curves is the same as the le...

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Abstract

The invention relates to a ground source heat pump vertical buried pipe heat transfer value model and an establishment method thereof. The model is a three-dimensional value heat transfer model and has two structure hierarchies including the horizontal structure and the vertical structure. According to the model, value simulation of field thermal response tests on constant heat flow conditions and constant temperature conditions can be carried out, rock-soil mass thermal physical parameters and vertical buried pipe heat exchange capability are calculated, and the model is convenient for design and application; on the condition that relatively high calculation precision is guaranteed, occupied calculation hardware resources are relatively small, the operation speed can be accelerated, and the model is suitable for long-term heat transfer calculation. The model is advantaged in that a heat exchange fluid can be inputted in a mode of a variable flow velocity parameter during simulating long-term load loading to acquire corresponding heat exchange capabilities corresponding to different flow velocities, and the model is suitable for optimization value study on frequency modulation water pump parameters in engineering design.

Description

technical field [0001] The invention relates to the technical field of ground source heat pumps, in particular to a method for establishing a heat transfer numerical model of a vertical buried pipe heat exchanger of a ground source heat pump, which is applicable to the calculation of thermal physical property parameters of rock and soil mass in various on-site thermal response tests under various working conditions Designed with vertical borehole heat exchangers. Background technique [0002] The ground source heat pump air conditioning system uses the flow of circulating fluid in the buried pipe to realize heat exchange with the underground rock and soil heat storage body. Compared with the air temperature, the underground rock and soil mass is more stable, and its heat storage and heat transfer capabilities are stronger, so that the ground source heat pump system has the characteristics of high efficiency, energy saving, economical and environmental protection. The ground...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00G06F17/50
CPCG06F30/20G06T15/005
Inventor 郭文建赵新卓
Owner 山东省地质矿产勘查开发局第五地质大队
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