Ground source heat pump geotechnical thermal response test data processing method with power failure process

A thermal response test and soil source heat pump technology, which is applied in the data processing field of soil source heat pump rock and soil thermal response test, can solve the problems of long recovery time, long test time, and inability to obtain the specific heat capacity of rock and soil

Active Publication Date: 2015-11-04
CHANGAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0015] The technical problems to be solved by the present invention are: the long time required for the soil temperature to basically recover after the power failure in the prior art one and the long test time after the data processing discards the data before the power failure and the power failure restart in the prior art two , can not get the volume specific heat capacity of rock and soil

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  • Ground source heat pump geotechnical thermal response test data processing method with power failure process
  • Ground source heat pump geotechnical thermal response test data processing method with power failure process
  • Ground source heat pump geotechnical thermal response test data processing method with power failure process

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Embodiment

[0035] The soil source heat pump rock soil thermal response test data processing method with power-off process of the present invention comprises the following steps:

[0036] The first step is to test the initial temperature T of rock and soil 0 ;

[0037] The second step is to flush the U-shaped vertical buried pipe;

[0038] In the third step, the test instrument is connected with the U-shaped vertical buried pipe of the test hole, and the necessary insulation is carried out;

[0039] The fourth step is to set the heating power of the heater and the flow rate of circulating water in the pipe, and keep it constant during the test;

[0040] The fifth step is to start the operation, conduct the test, and continuously record the water inlet temperature, outlet water temperature, water circulation flow in the pipe and heating power of the U-shaped vertical buried pipe, and the recording time step is set to 1 minute;

[0041] The sixth step, when the power is cut off, the circ...

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Abstract

The invention discloses a ground source heat pump geotechnical thermal response test data processing method with a power failure process. The method includes: during power failure, recording the power failure moment and inflow and outflow water temperature; when the power supply is restored, continuing the test; monitoring the water temperature restoration moment in real time, letting the test keep operating to satisfy the test required total time, i.e. the time from the water temperature restoration moment to the final test stop moment plus the test time before power failure; eliminating the test record data between the power failure moment and the water temperature restoration moment, combining the test record data after the water temperature restoration moment with the test record data before the power failure moment so as to obtain the test data serving as the effective test data; and calculating geotechnical thermophysical parameters. The method provided by the invention solves the problems that the ground temperature restoration after power failure needs a long time, data processing abandons the data before power failure, the test time is long after power failure restart, the geotechnical volume specific heat capacity cannot be obtained in the prior art.

Description

technical field [0001] The invention belongs to the technical field of ground source heat pumps, and relates to a data processing method for a soil heat pump thermal response test with a power-off process. Background technique [0002] The buried pipe heat exchanger of the soil source heat pump makes heat exchange between the water circulating in the pipe and the rock and soil outside the pipe through the vertical buried pipe. Since the temperature of the rock and soil is warmer in winter and cooler in summer than the surface air, the performance of the heat pump unit is higher than that of the conventional air source heat pump, and it has become a renewable energy technology that is actively promoted. [0003] Geotechnical thermophysical parameters are the basic data for designing buried pipe heat exchangers in soil source heat pump systems. Inaccurate thermophysical parameters will affect the economy and reliability of system design. Therefore, the research on the theory ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
Inventor 官燕玲江超孟庆龙张宇昊
Owner CHANGAN UNIV
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