A full heat recovery integrated gas heat pump heating unit and its application

A gas-fired heat pump and total heat recovery technology, applied in heat recovery systems, heat pumps, applications, etc., can solve problems such as unsatisfactory efficiency, complex structure, and poorly resolved defrosting control problems, so as to improve the ability to prevent frosting , High thermal energy conversion effect

Active Publication Date: 2021-04-13
SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of natural gas still has the problem of flue gas emission, which requires a certain height of the chimney and a certain concentration of nitrogen oxides
Due to the complex structure of the existing gas-fired air source heat pump, external heat exchange equipment and smoke exhaust devices and other accessories are required, and large-scale units also need to be assembled on site
The inventor’s previous application 201610203393.5 disclosed a gas-driven air source heat pump heating unit for central heating systems; however, during the trial production of the prototype, it was found that its efficiency was not ideal, and the defrosting control problem was not very good to solve

Method used

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  • A full heat recovery integrated gas heat pump heating unit and its application
  • A full heat recovery integrated gas heat pump heating unit and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A full heat recovery type integrated gas heat pump heating unit, refer to figure 1 , including: internal combustion engine 1, transmission coupling 2, compressor 3, condenser 4, expansion valve 5, evaporator 6, flue gas waste heat recovery device 7, smoke exhaust control valve 8, flue gas and air mixing chamber 9, inlet Windshield 10 and shell 11.

[0039] The internal combustion engine 1, transmission coupling 2, compressor 3, and condenser 4 are sequentially connected, and the exterior of the internal combustion engine 1 is provided with a cylinder liner; the expansion valve 5 is arranged between the condenser 4 and the evaporator 6 On the communication pipeline, and the evaporator 6 is connected back to the compressor 3 to form an air source heat pump refrigerant system; the flue gas waste heat recovery device 7 is arranged on the flue gas pipeline of the internal combustion engine 1, and the flue gas and air mixing chamber 9 and The air inlet of the evaporator 6 is...

Embodiment 2

[0042] A full heat recovery type integrated gas heat pump heating unit, the same as the embodiment 1, the difference is: refer to figure 2 , the outlet of the flue gas waste heat recovery device 7 communicates with the flue gas and air mixing chamber 9, and the flue gas enters the air mixing chamber 9 again after exchanging heat with the heating water in the flue gas waste heat recovery device 7 for reuse.

[0043] The characteristics of the heating unit in this embodiment are: due to the large condensation pressure of this model, the temperature of the water outlet from the condenser or the heating circulating water entering the flue gas waste heat recovery device is relatively high, resulting in the flue gas discharged from the flue gas waste heat recovery device ( Secondary flue gas) has a high temperature, so it should all enter the evaporator for further full utilization. The heating unit in this embodiment can provide hot water for heating at a temperature above 55°C, a...

Embodiment 3

[0045] A full heat recovery type integrated gas heat pump heating unit, the same as Embodiment 1 or 2, the difference is that: the air inlet window 11 is provided with a deflector; the deflector can ensure that the air intake passes through the internal combustion engine, coupling Heat dissipation components such as heat exchangers, compressors, heat exchangers, pipelines, etc., so that the waste heat can be fully absorbed.

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Abstract

The invention belongs to the field of gas-driven air source heat pump heat supply, and in particular relates to a full heat recovery type integrated gas heat pump heat supply unit and its application. Including: internal combustion engine, transmission coupling, compressor, condenser, evaporator, flue gas waste heat recovery device, flue gas and air mixing chamber, etc.; the internal combustion engine, transmission coupling, compressor, and condenser are connected in sequence, and The evaporator is connected back to the compressor; the flue gas waste heat recovery device is arranged on the flue gas pipeline of the internal combustion engine, and the flue gas and air mixing chamber communicates with the evaporator; the heating water pipeline is divided into two paths, and the first path is sequentially connected with the condenser 1. Heat exchange is performed between the flue gas waste heat recovery devices, and after heat exchange between the second road and the internal combustion engine, it merges with the first road to supply high-temperature water to the user. The present invention abandons the limitation of gas-fired heat pump research in pursuit of comprehensive energy efficiency ratio of multi-purpose and multi-working conditions, no longer considers summer refrigeration performance coefficient and cold-heat conversion, and successfully enables the existing GHP technology to be used in the heating system with radiator as the end.

Description

technical field [0001] The invention belongs to the field of gas-driven air source heat pump heat supply, and in particular relates to a full heat recovery type integrated gas heat pump heat supply unit and its application. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and it is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] During the implementation of clean energy transformation in recent years, most of them use gas to replace coal and electricity to replace coal. Both gas and electricity belong to high-grade energy. The energy is directly burned for heating demand with low-grade requirements, resulting in loss of energy intensity and waste of energy grade. [0004] At present, a large number of air source...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D15/04F25B30/06
CPCF24D15/04F25B30/06F24D2200/123F24D2200/18F24D2200/26F24H4/02F25B27/02F25B30/02F25B2327/001F25B2339/047Y02B10/70Y02B30/52Y02A30/274
Inventor 韩广钧
Owner SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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