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A pressurized thermochemical adsorption heat pump device

A technology of adsorption heat and pump device, which is applied in refrigeration and liquefaction, lighting and heating equipment, refrigerators, etc. It can solve the problem of high-temperature hot water that is difficult to break through 100°C and can only produce 86-95°C without breaking through 100°C [He Yongning, Cao Feng, Xing Ziwen, high exhaust temperature of compressor, etc.

Active Publication Date: 2020-08-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mechanical vapor compression heat pump cycle is limited by factors such as compressors and refrigerants. The maximum water supply temperature is generally lower than 90°C, and it is difficult to break through 100°C.
Because of the high condensing temperature, the compressor is overloaded, causing the discharge temperature of the compressor to be too high, and even causing the compressor to stop. At the same time, the heating capacity and COP of the system also drop sharply.
For example, He Yongning of Xi'an Jiaotong University designed a high-temperature water-source heat pump by adjusting the design of the compressor and optimizing the system control method. The test results show that using oilfield wastewater at 50-70°C as the heat source can only produce high-temperature heat at a maximum of 86-95°C. Water, did not break through 100℃

Method used

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  • A pressurized thermochemical adsorption heat pump device
  • A pressurized thermochemical adsorption heat pump device
  • A pressurized thermochemical adsorption heat pump device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 2 , a pressurized thermochemical adsorption heat pump device, including: a first reactor 51, a second reactor 52, a compressor 6, a first four-way water valve 71, a second four-way water valve 72, a first refrigerant The valve 81, the second refrigerant valve 82, the third refrigerant valve 83, the fourth refrigerant valve 84, the first water pump 91 and the second water pump 92 are filled with adsorbent in the first reactor 51 and the second reactor 52 , the refrigerant circulates between the first reactor 51 and the second reactor 52, and heat exchange tubes for the circulation of medium-temperature water or high-temperature water are arranged in the first reactor 51 and the second reactor 52,

[0031] On the side of the heat exchange fluid (medium temperature water and high temperature water): the heat exchange tubes inside the first reactor 51 and the second reactor 52 connect the medium temperature water and the high temperature water through the f...

Embodiment 2

[0048] refer to Figure 4 , the difference from Example 1 is that this example takes into account that the thermochemical adsorption heat pump compressor pressure is relatively large, in order to improve system reliability and prevent the compressor discharge temperature from being too high, this example adopts two-stage compression, and in A cooler is used at the inlet end of the compressor to fully cool the compressor inlet, and the compressor inlet is cooled to 30°C. According to the REFPROP physical property software, it can be calculated that about 285.6kJ / kg heat is released by the two compressor inlet cooling, but this part of the heat loss is only equivalent to 10% of the reaction heat (2437kJ / kg) released at the high temperature end of the thermochemical adsorption heat pump.

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Abstract

The invention relates to a pressurized thermochemical adsorption heat pump device, which includes a first reactor, a second reactor, a compressor, a first four-way water valve, a second four-way water valve, a first refrigerant valve, a second A refrigerant valve, a third refrigerant valve, a fourth refrigerant valve, a first water pump and a second water pump. Each reactor is filled with metal chloride adsorbent, and the refrigerant is ammonia and the like. The device of the present invention embeds a compressor between two reactors, uses two four-way water valves to change the flow direction of medium-temperature water and high-temperature water, and uses four refrigerant valves to change the flow direction of refrigerant. During operation, from one The refrigerant desorbed from the reactor is pressurized by the compressor and absorbed by another reactor to release high-temperature reaction heat. Because the compressors are embedded in the two reactors, the thermochemical heat pump system can realize low-pressure and low-temperature desorption and heat absorption and high-pressure and high-temperature adsorption and heat release.

Description

technical field [0001] The invention relates to the technical field of heat pump equipment, in particular to a pressurized thermochemical adsorption heat pump device. Background technique [0002] Heat pump technology is a device that transfers low-level energy obtained from air, industrial wastewater or soil to high-level energy by consuming a certain amount of high-grade energy (such as mechanical energy, electrical energy, and thermal energy), which has attracted extensive research. figure 1 Shown is the existing mechanical vapor compression heat pump device. During operation, the low-temperature and low-pressure liquid refrigerant evaporates and absorbs heat in the evaporator 1. The heat comes from the environment or industrial wastewater. The low-temperature and low-pressure refrigerant vapor is compressed by the compressor 2 and becomes high-temperature and high-pressure. The refrigerant vapor is then condensed in the condenser 3 to release condensation heat, and the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B25/02F25B41/00F25B41/40
CPCF25B25/02F25B41/40
Inventor 高鹏张春路邵亮亮
Owner TONGJI UNIV