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Heat pump device with freezing pipe as ground heat exchanger

A technology for underground heat exchangers and heat pump devices, which is applied in the field of heat pump devices and can solve the problems of large floor space and high installation costs of underground heat exchangers

Inactive Publication Date: 2009-11-18
BEIJING ZHONGKUANG DAYU ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction of underground heat exchangers requires a large footprint and high installation costs

Method used

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  • Heat pump device with freezing pipe as ground heat exchanger
  • Heat pump device with freezing pipe as ground heat exchanger
  • Heat pump device with freezing pipe as ground heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] exist figure 1 In the process, the heat source water at 8-18°C coming out of the circulation pipe 2 enters the evaporator 3 to release heat. After the Freon absorbs heat, the temperature rises to 5-13°C, and then the temperature rises to 50-70°C through the compressor 4, enters the condenser 5, and the temperature drops to 45-65°C, and then passes through the throttle valve 6, and the temperature drops to 0 ~8°C enters evaporator 3. The circulating water at 40-50°C from the user 7 is heated by the condenser 5 and then enters the user 7 after the temperature rises to 45-65°C.

[0013] figure 2 In the example shown, the 20-30°C cooling water from the freezing pipe 1 enters the condenser 5 through the outlet pipe 9, and the temperature rises to 25-35°C and enters the circulation pipe 2 to discharge heat to the soil and groundwater, and the temperature drops to 20-30°C enters the condenser 5 again, and after the temperature of Freon in the condenser 5 drops from 30-35°C...

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Abstract

The invention relates to a heat pump device with a freezing pipe as a ground heat exchanger so as to provide stable heat sources and cold sources for the heat pump. During running in winter and summer, the heat pump device can reach the optimal heat exchange effect by changing the direction of water flow in the ground heat exchanger. The final heat source or cold source of the heat pump is soil and groundwater; the water outlet end of the heat pump is connected with a user; the heat pump device provides heat sources for heating and bathing in winter and provides cold sources for air conditioners in summer.

Description

technical field [0001] The invention relates to the underground heat exchange technology of freezing tubes, and also relates to the heat pump technology, in particular to the heat pump device in which the freezing tubes are underground heat exchangers. Background technique [0002] Under geological conditions with thick topsoil, before excavating the wellbore, the aquifer around the wellbore is generally frozen into a closed cylindrical frozen wall by artificial refrigeration to resist ground pressure and isolate the connection between groundwater and the wellbore. Excavation work under protection. The freezing construction sequence is to drill a number of freezing holes around the wellbore, and install a freezer consisting of a liquid supply pipe, a liquid return pipe and a freezing pipe closed at the bottom in the hole; the low-temperature medium (generally -20 ~-35°C brine) is circulated into the freezer to absorb the heat of the formation, so that the aquifer forms a fr...

Claims

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Application Information

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IPC IPC(8): F25B30/06F24J3/08
CPCY02E10/10
Inventor 戴华东朱晓彦王素芬袁训涛
Owner BEIJING ZHONGKUANG DAYU ENERGY SAVING TECH
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