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Air-conditioning system of automobile for improving condensing effect by gasifying liquefied natural gas (LNG)

An automotive air conditioning system, liquefied natural gas technology, applied in refrigeration and liquefaction, household refrigeration devices, applications, etc., can solve the problems of high refrigerant dryness, reduced cooling capacity, and waste of cooling capacity, etc., to reduce volumetric efficiency and reduce charging. The effect of fluence and power consumption reduction

Active Publication Date: 2013-11-13
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the cooling of the refrigerant is insufficient, the subcooling of the refrigerant at the outlet of the condenser is too small or the refrigerant is in a two-phase flow, the refrigerant after throttling by the expansion valve tends to be dry, which reduces the cooling capacity
[0005] In the prior art, the liquefied natural gas in the liquid storage bottle exchanges heat with the air in the pipeline sent to the engine, and after raising the temperature, it is sent to the engine, which causes a waste of cooling capacity

Method used

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  • Air-conditioning system of automobile for improving condensing effect by gasifying liquefied natural gas (LNG)
  • Air-conditioning system of automobile for improving condensing effect by gasifying liquefied natural gas (LNG)

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Embodiment Construction

[0019] Such as figure 1 As shown in the figure of the refrigeration system device, the whole device of the present invention only needs to carry out simple refitting to the existing automobile air-conditioning system. Add an LNG pre-cooler 20 before the condenser 30, and the outside air passes through the LNG pre-cooler 20 before entering the condenser 30, and the temperature drops. Like this, using LNG to cool the air passing through the condenser 30 can improve the condenser 30. The condensation effect of the medium refrigerant can improve the performance of the refrigeration system, and a small-power compressor and a small condenser can be used.

[0020] Below with reference to accompanying drawing, the whole device is introduced in detail. Such as figure 1 As shown, the entire refrigeration system is mainly composed of five components, including: a compressor 10 , an LNG precooler 20 , a condenser 30 , an expansion valve 40 and an evaporator 50 . The operation process i...

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Abstract

The invention discloses an air-conditioning system of an automobile for improving the condensing effect by gasifying liquefied natural gas (LNG). An LNG precooler is arranged in front of a condenser. External air passes through the LNG precooler before entering the condenser, and the temperature falls, so that LNG is used for cooling the air passing through the condenser, the condensing effect of a refrigerant in the condenser can be improved, the temperature of the refrigerant at the outlet of the condenser is lowered, the refrigerating quantity and COP (Coefficient Of Performance) of a refrigerating system can be increased, and a small-power compressor and a small condenser can be used.

Description

technical field [0001] The invention relates to an automobile air-conditioning system using liquefied natural gas as power, in particular to an automobile air-conditioning system using liquefied natural gas vaporization to improve condensation effect. Background technique [0002] In recent years, my country has begun to develop the liquefied natural gas industry in order to fully recycle natural gas scattered in remote areas. In early 2007, the Changqing Jingbian LNG project was put into production and operation, which is used to liquefy natural gas that is not suitable for pipeline transportation as vehicle fuel. With the continuous development of the automobile industry, liquefied natural gas is used in automobiles as a clean energy source. Natural gas is used as a vehicle fuel because it has less pollution to the atmosphere, is a clean fuel, and is a high-quality alternative fuel for vehicles. There is a prominent problem in the application of natural gas fuel in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60H1/32F25D3/10
CPCF25B40/02
Inventor 陈江平梁媛媛
Owner SHANGHAI JIAOTONG UNIV