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Portable rock-soil heat phyical characteristic detection inst rument based on ground-source heat pump and method thereof

A ground source heat pump, portable technology, applied in the direction of instruments, material thermal development, material thermal conductivity, etc., can solve the problem of inaccurate measurement of underground geotechnical parameters, achieve stable operation, easy to carry, and good application prospects

Inactive Publication Date: 2006-08-09
GROUND SOURCE HEAT PUMP INST SHANDONG ARCHITECTURE ENG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of inaccurate measurement of underground rock and soil thermophysical parameters in the current design of the ground source heat pump system, and to provide a compact, portable, convenient and accurate on-site heat pump for underground rock and soil. Portable Geotechnical Thermal Physical Property Tester Based on Ground Source Heat Pump for Measuring Physical Parameters

Method used

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  • Portable rock-soil heat phyical characteristic detection inst rument based on ground-source heat pump and method thereof
  • Portable rock-soil heat phyical characteristic detection inst rument based on ground-source heat pump and method thereof
  • Portable rock-soil heat phyical characteristic detection inst rument based on ground-source heat pump and method thereof

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Experimental program
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Embodiment

[0036] The borehole diameter is 115mm, the depth is 60m, the inner diameter of the buried pipe is 25mm, the outer diameter is 32mm, the pipe spacing is 70mm, the initial temperature of the underground rock and soil is 14.5°C, the thermal conductivity of the pipe wall is 0.33W / m°C, and the thermal conductivity of the borehole backfill material is 1.5W / m m℃, when the heating power is 48W / m.

[0037] Depend on image 3 It can be seen that the calculated average thermal conductivity of the underground rock and soil around the borehole is different when the test time is different. When the test time reaches 50 hours, the measured thermal conductivity tends to be stable and maintains in the range of 1.530-1.538W / m°C. Usually the test time can be selected to be about 60 hours, which can not only ensure the correct thermal conductivity, but also avoid the test time being too long.

[0038] Keeping other conditions unchanged, only changing the distance between the riser and downcomer...

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Abstract

Present invention discloses a portable cliff soil heat physical property tester and method. It solves mismeasurement problem of underground cliff heat physical property in current ground source heat pump system design. It contains portable cliff soil heat physical property tester based on ground source heat pump, at least one flow sensor, at least one exhaust I, at least one water circulating pump, at least one exhaust II, at least one electric heater, at least one temperature sensor II set in pipe exit end, wherein flow sensor and temperature sensor I connected with monitored control system, voltage sensor and temperature sensor II connected with monitored control system, electric heater connected with EPS through monitored control system.

Description

technical field [0001] The invention relates to a portable geotechnical thermophysical property tester based on a ground source heat pump and a method thereof. Background technique [0002] Compared with other air conditioning systems, the ground source heat pump system has outstanding advantages. Since the temperature deep in the formation remains constant all year round, it is much higher than the outdoor temperature in winter, but significantly lower than the outdoor temperature in summer, so the ground source heat pump overcomes the technical obstacles of the air source heat pump, and the efficiency is greatly improved. obvious. In addition, it has many advantages such as low noise, small footprint, no discharge of pollutants, no need to pump ground water, low operation and maintenance costs, and long life. [0003] To design the geothermal heat exchanger of the ground source heat pump system, it is necessary to know the thermophysical parameters of the underground roc...

Claims

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Application Information

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IPC IPC(8): G01N25/20G01N25/18G06F19/00
Inventor 李晓东于明志方肇洪
Owner GROUND SOURCE HEAT PUMP INST SHANDONG ARCHITECTURE ENG COLLEGE
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