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Pressurizing thermochemical adsorption heat pump device

A technology of adsorption heat, pump device, applied in refrigeration and liquefaction, lighting and heating equipment, mechanical equipment, etc., can solve the problem of compressor shutdown, limited, high temperature can only produce 86-95 ℃ high temperature hot water, no breakthrough 100℃ [He Yongning, Cao Feng, Xing Ziwen, etc.

Active Publication Date: 2018-12-07
TONGJI UNIV
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  • 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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  • Pressurizing thermochemical adsorption heat pump device
  • Pressurizing thermochemical adsorption heat pump device
  • Pressurizing 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 pressurizing thermochemical adsorption heat pump device. The pressurizing thermochemical adsorption heat pump device comprises 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 refrigerant valve, a third refrigerant valve, a fourth refrigerant valve, a first water pump and a second water pump. A metal chloride adsorbent fills each reactor, and a refrigerating medium is ammonia and the like. By embedding the compressor between the two reactors, changing the flowing directions of intermediate temperate water and high temperature water by means of the two four-way water valves and changing the flowing direction of the refrigerant by means of the four refrigerant valves, the refrigerant desorbed by one reactor is pressurized by the compressor and is adsorbed by the other reactor in the operating process so as to realize high temperature reaction heat. As the compressoris embedded between the two reactors, a thermochemical heat pump system can achieve low pressure low temperature desorbing heat adsorption and high pressure high temperature adsorptive 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 Applications(China)
IPC IPC(8): F25B25/02F25B41/00F25B41/40
CPCF25B25/02F25B41/40
Inventor 高鹏张春路邵亮亮
Owner TONGJI UNIV