High precision soil thermophysical nature measurer for ground source heat pump

A technology of physical property tester and ground source heat pump, which is applied in the direction of instruments, material thermal development, material thermal conductivity, etc., can solve the problem of low accuracy of calculation results

Inactive Publication Date: 2009-03-25
SHANGHAI JIAO TONG UNIV +3
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  • Abstract
  • Description
  • Claims
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  • High precision soil thermophysical nature measurer for ground source heat pump
  • High precision soil thermophysical nature measurer for ground source heat pump
  • High precision soil thermophysical nature measurer for ground source heat pump

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Embodiment Construction

[0018] The concrete implementation of the present invention is described further below in conjunction with accompanying drawing:

[0019] Such as figure 1As shown, the present invention includes a filter 1, a differential pressure switch 2, an inlet temperature sensor 3, an electric heater 4, a power sensor 5, a water level controller 6, a replenishing water tank 7, a first pressure gauge 8, a circulating water pump 9, a second Pressure gauge 10, electromagnetic flowmeter 11, outlet temperature sensor 12, one-way valve 13, tee 14, first ball valve 15, second ball valve 16, programmable controller 17, LCD touch screen 18, buried temperature sensor 19, power supply 20. Data calculation module 21. The entire tester pipeline is connected by a filter 1, an electric heater 4, a water supply tank 7, a one-way valve 13, a tee 14, a circulating water pump 9, a second ball valve 16, and an electromagnetic flowmeter 11 , wherein the filter 1 is installed at the inlet end of the tester p...

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Abstract

The invention relates to a high-precision soil thermophysical property tester for a ground source heat pump, and belongs to the technical field of energy-saving and air-conditioning. The tester consists of a filter, an electric heater, a water supplementing tank, a one way valve, a tee joint, a water circulating pump, a second ball valve and an electromagnetic flow meter which form a test pipeline. A data computation module computes soil thermophysical property parameters by adopting programs of an infinite line heat source model and a finite line heat source correcting model according to five parameters of average temperature of circulating water, initial temperature of soil, heat exchange amount of unit pipe length of a heat exchanger for an embedded pipe, flow rate of the circulating water and the depth of the embedded pipe. The tester can not only be applied to actual measurement of engineering, but also applied to researching the underground soil thermophysical property parameters when the ground source heat pump works for a long time. The tested computation result is in more accordance with the practical situation; and the tester has the advantages of compact structure, high test precision, wide test power range, high visibility degree, convenient operation and safe use.

Description

technical field [0001] The invention relates to a soil thermophysical property tester, in particular to a high-precision soil thermophysical property tester for a ground source heat pump, which belongs to the technical field of energy saving and air conditioning. Background technique [0002] The ground source heat pump system uses the earth as the cold source or heat source, uses the intermediate medium as the heat carrier, and makes the intermediate medium circulate in a closed loop buried in the soil to realize the heat exchange between the intermediate medium and the soil, and then realize the heat transfer through the heat pump. Air conditioning or heating of buildings. Compared with the air source heat pump, the ground source heat pump has the advantages of high unit performance coefficient, good energy saving effect, use of renewable energy, simple system, low operating cost, etc. Promising green air-conditioning technology. The ground source heat pump system has be...

Claims

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Application Information

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IPC IPC(8): G01N25/20G01N25/18G06F19/00
Inventor 连之伟于新李世刚戚大海彭友辉
Owner SHANGHAI JIAO TONG UNIV
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