Heat supply method for air source-water source composite heat pump with middle gas supplementing

An air source heat pump and intermediate air supply technology, applied in space heating and ventilation, heat pumps, heating methods, etc., can solve problems such as high exhaust temperature and low heating efficiency, improve working conditions, prevent wet compression, and meet The effect of heating and sanitary hot water requirements in winter

Inactive Publication Date: 2019-01-08
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of outdoor ambient temperature, ordinary air source heat pump units cannot operate normally in an environment below minus 5°C, and face problems such as low heating efficiency and high exhaust temperature, which severely limits the use of air source heat pumps as an energy-saving technology in cold northern regions. usage of

Method used

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  • Heat supply method for air source-water source composite heat pump with middle gas supplementing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the exhaust port z of the intermediate air supply scroll compressor 1 is connected to the a port of the first four-way reversing valve 8, the suction port x is connected to the outlet of the gas-liquid separator 2, and the air supply port y is connected to the economizer 7 The i port of the first four-way reversing valve is connected with the second four-way reversing valve 9a port, the c port is connected with the gas-liquid separator 2 inlet, and the d port is connected with the m port of the water source side heat exchanger 6 ; The b port of the second four-way reversing valve 9 is connected to the p port of the finned tube heat exchanger 4, the c port is connected to the gas-liquid separator 2 inlet, and the d port is connected to the e port of the air-conditioning side heat exchanger 5; The pipelines on the q port of the finned tube heat exchanger 4, the f port of the air-conditioning side heat exchanger 5, and the n port side of the wate...

Embodiment 2

[0023] Such as figure 1 As shown, in the heating mode of the air source heat pump, the first electronic expansion valve 11 is energized and opened, the second electronic expansion valve 12 and the third electronic expansion valve 13 are not energized and closed, the second four-way reversing valve 9 is energized, and the middle The exhaust gas of the supplementary air scroll compressor 1 enters the a port of the first four-way reversing valve 8, discharges from the b port, enters the a port of the second four-way reversing valve 9, and then discharges from the d port, and enters the air conditioner side The heater 5, after exchanging heat with the circulating water system, enters the liquid reservoir 3 through the second one-way valve 15, and enters the h port of the economizer 7 through the dry filter 17 after coming out of the liquid reservoir 3, and is exchanged in the economizer After being heated, it flows out from port j and is divided into two paths, one path enters por...

Embodiment 3

[0026] Such as figure 1 As shown, in the heating mode of the water source heat pump, the first electronic expansion valve 11 and the second electronic expansion valve 12 are not powered and closed, the third electronic expansion valve 13 is powered on, the second four-way reversing valve 9 is powered, and the intermediate compensation The exhaust gas from the air scroll compressor 1 enters the a port of the first four-way reversing valve 8, is discharged from the b port, enters the a port of the second four-way reversing valve 9, and then is discharged from the d port, and enters the air conditioner side for heat exchange 5, after exchanging heat with the water system, it enters the liquid reservoir 3 through the second one-way valve 15, and after coming out of the liquid reservoir 3, it enters port h of the economizer 7 through the dry filter 17, and flows out from port j after heat exchange , is divided into two routes, one route passes through the gas supply electronic expa...

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Abstract

The invention provides a heat supply method for air source-water source composite heat pump with middle gas supplementing. An electrical controller in the system can compare a current outdoor environment temperature and a water source side temperature, under a heating mode, when the temperature of the water source side is larger than the temperature of the outdoor environment temperature minus a set deviation value, a water source heat pump heating mode is selected, when the temperature of the water source side is smaller than the temperature of the outdoor environment temperature minus the set deviation value or the temperature of the water source side is lower than the set value, an air source heat pump heating mode is selected; under a refrigeration mode, when the temperature of the water source side is larger than the temperature of the outdoor environment temperature minus the set deviation value, the air source heat pump heating mode is selected, when the temperature of the watersource side is smaller than the temperature of the outdoor environment temperature minus the set deviation value, the water source heat pump heating mode is selected. According to the heat supply method, the use limit of the air source heat pump in northern cold regions can be effectively solved.

Description

technical field [0001] The invention relates to a heat pump heat supply method, in particular to an air source-water source composite heat pump heat supply method with intermediate air supply. Background technique [0002] Heating is common in the cold regions of northern my country in winter, and most of them use coal-fired centralized heating. At the same time, there are a small number of scattered regional boiler rooms, electric heaters for personal use, and small coal-fired, oil-fired, and gas-fired boilers for winter heating, which wastes energy. What has brought about is the continuous aggravation of environmental pollution. [0003] As an energy-saving and environment-friendly technology, the air source heat pump has good safety, and is easy to install and use, and has been widely used in the world. Due to the influence of outdoor ambient temperature, ordinary air source heat pump units cannot operate normally in an environment below minus 5°C, and face problems such ...

Claims

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Application Information

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IPC IPC(8): F24D3/18F25B30/02F25B41/00F25B41/40
CPCF24D3/18F25B30/02F25B41/40
Inventor 蒋爽杜伟毕海洋
Owner DALIAN NATIONALITIES UNIVERSITY
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