Device for detecting soil temperature on buried side of ground source heat pump system
A ground source heat pump, soil temperature technology, applied in the field of HVAC, can solve the problems of soil heat imbalance, soil temperature deviation, soil heat accumulation, etc.
Pending Publication Date: 2019-03-29
NANJING XINGHUA ARCHITECTURE DESIGN & RES INST CO LTD
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Problems solved by technology
Such a long-term imbalance of heat intake and release will cause heat accumulation in the soil, causing the soil temperature to continuously deviate from its initial temperature, resulting in a decrease in the operating efficiency of the entire ground source heat pump air conditioning system year by year, or even failure to operate. This is the problem of soil heat imbalance.
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Embodiment Construction
[0008] Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail:
[0009] Such as figure 1 As mentioned above, a vertical ground source shaft 4 with a diameter of φ150 and an effective depth of 100 meters is drilled in the densely buried pipe area of the ground source heat pump heat exchange system, and a De40PE pipe 1 with a length greater than 100 meters is taken at the same time. One end of the pipe is fixed with a metal U-shaped elbow, and a φ25 hole is opened on the outer wall of the PE pipe 10 meters away from the U-shaped elbow, and two identical holes are opened at a continuous distance of 30 meters. The temperature measuring probe 2 of PT100 is bundled near the hole, and three RVVP3×1.0 shielded temperature measuring cables 3 connected to the three temperature measuring probes are inserted into the PE pipe 1 through their respective holes, and lead out from the other end of the PE pipe 1. Clamp the ...
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Abstract
The invention belongs to the technical field of the HVAC, and specifically relates to a device for detecting the soil temperature on the buried side of a ground source heat pump system. The device fordetecting the soil temperature on the buried side of a ground source heat pump system includes a PE pipe with a length of not less than 100 meters, wherein three temperature measuring probes are fixed on the PE pipe; each temperature measuring probe is connected with one shielded temperature measuring cable, and the three temperature measuring cables are laid in the PE pipe; the device also includes a vertical ground source shaft with an effective depth of 100 meters in a ground pipe area, and the PE pipe of the device is vertically placed into the shaft, and the shaft is filled with groutingbackfill; and the temperature measuring line exposed outside the shaft is connected to the multi-circuit inspection control instrument of the ground source heat pump room. The device for detecting the soil temperature on the buried side of a ground source heat pump system monitors the soil temperature changes of the ground source buried pipe area at different depths so that the ground source heatpump system is operated in an efficient and energy-saving state for a long time.
Description
technical field [0001] The invention belongs to the technical field of heating and ventilation, and in particular relates to a detection device for soil temperature on the buried side of a ground source heat pump system. Background technique [0002] At present, the scale of China's green buildings has entered a stage of accelerated growth. As one of the three renewable energy sources, the ground source heat pump system has gradually matured under the guidance of relevant national policy support and financial subsidies, and has been widely used in green buildings. under construction. The ground source heat pump air-conditioning system extracts the temperature difference energy from the underground soil through the buried heat exchanger. Due to the inconsistent air-conditioning load and running time of the building in winter and summer, the accumulated heat release value of the buried heat exchanger to the soil in summer is greater than that in winter during the operation of ...
Claims
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IPC IPC(8): G01K7/18G01K1/14G01K13/10
CPCG01K1/14G01K7/18G01K13/10
Inventor 王慧许霞
Owner NANJING XINGHUA ARCHITECTURE DESIGN & RES INST CO LTD