Refrigerating fluid active jet heat pump based on solar energy and control method thereof

A refrigerant and solar energy technology, applied in the field of heat pumps, can solve the problems such as the inability of low temperature heat pumps to play a heating role, the limited improvement of heat pump heating capacity and energy efficiency, and the limited improvement of heat pump energy efficiency, so as to solve the problems of heating capacity and energy efficiency. The effect of serious attenuation, broadening the scope of application and improving heat transfer performance

Active Publication Date: 2020-09-11
宁波市海智普智能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned air injection enthalpy increasing technology has improved the heating capacity and energy efficiency of the heat pump to a certain extent, this kind of refrigerant injection with a subcooler uses internal heat for the injected refrigerant and the refrigerant in the main circuit. Exchange does not absorb heat from the outside, it is a passive injection of refrigerant, so in fact, the improvement of the heating capacity and energy efficiency of the heat pump is limited

Method used

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  • Refrigerating fluid active jet heat pump based on solar energy and control method thereof
  • Refrigerating fluid active jet heat pump based on solar energy and control method thereof
  • Refrigerating fluid active jet heat pump based on solar energy and control method thereof

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Effect test

Embodiment 1

[0080] Such as image 3 As shown, the solar energy-based refrigerant active injection heat pump of the present invention includes a heat pump system, an injection system, a solar heating system and a waterway switching mechanism.

[0081] The heat pump system includes a compressor 1, a condenser 2, an evaporator 3, a main throttle valve 4, a four-way valve 5, a liquid storage tank 6, a gas-liquid separator 7, an outdoor fan 8, an insulating water tank 9 and a main engine water pump 10. Refrigerant conduit 11 and insulation water conduit 12 are provided on the condenser 2, the exhaust port of the compressor 1 is connected with the D port of the four-way valve 5, and the E port of the four-way valve 5 is connected with the inlet of the refrigerant conduit 11 on the condenser 2 The outlet end of the refrigerant conduit 11 communicates with one end of the liquid storage tank 6, the other end of the liquid storage tank 6 communicates with one end of the main throttle valve 4, and t...

Embodiment 2

[0097] The difference between this embodiment and Embodiment 1 is that the structure of the waterway switching mechanism adopted is different. The above-mentioned difference is specifically as follows: Figure 4 As shown, the waterway switching mechanism includes a first waterway three-way valve 34 and a second waterway three-way valve 35, both of which are electronically controlled. One end of the heat exchange pipe 19 communicates with one end of the heat source water pump 21. The water outlet of the first waterway three-way valve 34 is connected with the other end of the heat source water pump 21, the two water inlets of the first waterway three-way valve 34 are respectively connected with the heat preservation water tank 9 and the heat storage tank 20, and the water inlet of the second waterway three-way valve 35 is connected with the heat exchange The other end of the water pipe 19 communicates, and the two water outlets of the second waterway three-way valve 35 communicat...

Embodiment 3

[0099] This embodiment discloses the control method of the solar energy-based refrigerant active injection heat pump in Embodiment 1 or 2, including the following steps:

[0100] During the operation of the heat pump, the opening of the main throttle valve 4 and the subcooling throttle valve 17 is adjusted according to a certain target, and the external heat source pump 21 is controlled to maintain a continuous running state. Temperature T of stored hot water within 20 Tank , through the inlet temperature sensor 23 real-time detection of the subcooler injection inlet temperature T at the inlet end of the refrigerant heat exchange tube 18 inj,in , through the outlet temperature sensor 24 real-time detection of the subcooler injection inlet temperature T at the outlet end of the refrigerant heat exchange tube 18 inj,out ;

[0101] When the hot water temperature T Tank ≤Subcooler injection outlet temperature T inj,out At this time, the water exchange pipe 19 is communicated w...

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Abstract

The invention provides a refrigerating fluid active jet heat pump based on solar energy and a control method thereof aiming at the technical bottleneck that a current refrigerating fluid passive jet lifting heat pump is limited in performance, and cannot be used for an environment with extremely low temperature. Under the condition that the solar energy is sufficient, the solar energy can be fullyutilized, the solar energy is converted into a high-grade heat source and guided into a subcooler to carry out full heat exchange with jet refrigerating fluid of a heat pump unit, the refrigerating fluid obtaining heat is jet into an intermediate pressure cavity of a compressor, and therefore external heat is converted into the heat pump unit, heat work gains are obtained, and the heating capacity and the energy efficiency of the heat pump are greatly improved. When the solar energy is insufficient, heat energy generated by the heat pump can be fully utilized, the heat energy is input into the subcooler to carry out heat exchange with the jet refrigerating fluid, heat work gains are obtained, and then the heating capacity and the energy efficiency of the heat pump are improved. The heat pump can also be applied to the regions with the environmental temperature lower than -15 DEG C, and therefore the application range of the heat pump is widely widened.

Description

technical field [0001] The invention relates to a heat pump, in particular to a solar energy-based refrigerant active injection heat pump and a control method thereof. Background technique [0002] With the development of the economy, the continuous improvement of people's living standards, and the development of urbanization, the application of air-conditioning and heating systems has become increasingly widespread, resulting in huge building energy consumption. On a global scale, building energy consumption in developed countries accounts for about 37-40% of the total energy consumption of the society, and building energy consumption in my country accounts for more than 33% of the total energy consumption of the society. Among the building energy consumption, the energy consumption of air conditioning and heating equipment accounts for The ratio is the largest, as high as 65%. On the other hand, people put forward higher requirements for the comfort and sanitation of the l...

Claims

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Application Information

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IPC IPC(8): F25B30/02F25B27/00F25B41/04F25B41/06F25B49/02
CPCF25B30/02F25B27/005F25B49/02F25B2600/25
Inventor 邓晨冕涂虬张杰徐永华
Owner 宁波市海智普智能科技有限公司
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