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Pump-free type thermal spray refrigerating cycle method and device

A technology of refrigeration cycle and thermal injection, applied in refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems of reducing system COP, the influence of condensation pressure, and the energy of high-temperature and high-pressure refrigerant vapor is not fully utilized.

Inactive Publication Date: 2014-11-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above two systems, in order to meet the pressure of the next cycle of liquid storage, when the liquid storage tank is completed as a liquid working fluid, the residual high-temperature and high-pressure refrigerant vapor enters the condenser without being used to condense into a low-pressure liquid On the one hand, the energy of the high-temperature and high-pressure refrigerant vapor is not fully utilized, which reduces the COP of the system; on the other hand, the high-temperature and high-pressure refrigerant vapor affects the condensation pressure

Method used

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  • Pump-free type thermal spray refrigerating cycle method and device
  • Pump-free type thermal spray refrigerating cycle method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0062] like figure 1 As shown, the pumpless jet refrigeration cycle device in this embodiment uses tetrachloroethane (R134a) as the circulating working fluid, which specifically includes a generator 1, an expansion valve 2, an evaporator 3, an ejector 4, a condenser 5 and a liquid storage The liquid storage device includes a first liquid storage tank 6 and a second liquid storage tank 7 in parallel with each other. Each liquid storage tank has the following interfaces, and each interface has a control valve:

[0063] The liquid phase inlet is communicated with the outlet of the condenser 5 through the liquid phase inlet control valve 61 of the first liquid storage tank 6 and the liquid phase inlet control valve 71 of the second liquid storage tank 7 respectively;

[0064] The liquid phase outlet is communicated with the liquid phase inlet of the generator 1 through the liquid phase outlet control valve 62 of the first liquid storage tank 6 and the liquid phase outlet control v...

Embodiment 2

[0078] like figure 2 As shown, the outlet of the condenser 5, the steam outlet of the generator 1, and the gas phase inlets of the two liquid storage tanks are connected through a four-way valve 12 (switching valve), and the two liquid storage tanks are connected through a control valve 13. Other structures are the same as in Example 1.

[0079] The workflow of the working fluid in this embodiment is as follows:

[0080] cooling stage t 1 , the generator 1 energy input control valve 10, the injector 4 inlet control valve 11 are opened, the liquid phase outlet control valve 62 and the control valve 72 of the two storage tanks, the two cooling jacket control valve 81 and the control valve 91 are closed, and the four-way valve is closed. 12 is connected to the I-IV routes, the refrigeration system is running, and a part of the condensate flowing out of the condenser 5 flows into the second liquid storage tank 7 as a liquid working medium.

[0081] Uncooled stage t 2 , the co...

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Abstract

The invention discloses a pump-free type thermal spray refrigerating cycle method and device. After working fluids are pressurized and conveyed through high-temperature high-pressure refrigerant steam generated by a generator, working fluids to be conveyed in next circulation are pressurized in advance, energy of the high-temperature high-pressure refrigerant steam is fully used, and the COP of a system is improved. The device comprises the generator, a throttling element, an evaporator, an ejector, a condenser and a liquid storage device. The liquid storage device comprises at least two matched liquid storage tanks in parallel connection, each liquid storage tank is communicated with the generator, the condenser and other matched liquid storage tanks through a control valve, the ejector is sequentially connected with the condenser, the throttling element and the evaporator in series to form a loop, and the condenser is sequentially connected with the liquid storage device and the generator in series to form a loop. By means of the device, energy utilization of the system is more economical and reasonable, the thermal load of cooling water is reduced, pump-free circulating of the system is achieved, the number of moving parts is reduced, and operation performance is more stable and reliable.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a pumpless thermal spray refrigeration cycle method and a device for realizing the method. Background technique [0002] The refrigeration industry is a major energy-consuming industry, and the research on refrigeration technology should reduce energy consumption on the basis of ensuring the required refrigeration capacity. At present, at least half of the heat in industrial production is directly discharged into the atmosphere in various forms of waste heat. These exhausted and unused heat not only increase the production cost of enterprises, cause energy waste, but also cause serious damage to the environment. Pollution. [0003] Thermal jet refrigeration technology is a refrigeration technology directly driven by thermal energy. It can use waste heat, solar energy, geothermal energy and other low-grade energy as driving energy, which not only improves the ef...

Claims

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Application Information

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IPC IPC(8): F25B41/00F25B41/04F25B49/00F25B41/20F25B41/40
Inventor 何一坚张胜张吉李炜恒李佳碧陈光明
Owner ZHEJIANG UNIV
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