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

An automobile air-conditioning system and liquefied natural gas technology, which is applied in refrigeration and liquefaction, household refrigeration equipment, applications, etc., can solve the problems of high dryness of refrigerant, waste of cooling capacity, and reduction of cooling capacity, so as to achieve volumetric efficiency reduction and charge reduction. Injection and leakage reduction effects

Active Publication Date: 2012-04-04
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
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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)
  • 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 refrigeration system device diagram, the entire device of the present invention only needs to be simply modified to the existing automobile air conditioning system. An LNG pre-cooler 20 is added before the condenser 30. The outside air passes through the LNG pre-cooler 20 before entering the condenser 30, and the temperature drops. In this way, the condenser 30 can be improved by using LNG to cool the air passing through the condenser 30. The condensation effect of the medium refrigerant can improve the performance of the refrigeration system, and can use low-power compressors and smaller condensers.

[0020] The entire device will be described in detail below with reference to the drawings. Such as figure 1 As shown, the entire refrigeration system is mainly composed of five components, including: a compressor 10, an LNG pre-cooler 20, a condenser 30, an expansion valve 40 and an evaporator 50. The operation process is as follows: the ref...

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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 air-conditioning system of an automobile using liquefied natural gas as power, in particular to an air-conditioning system of an automobile using liquefied natural gas vaporization to improve the condensation effect. Background technique [0002] In recent years, my country has begun to develop the liquefied natural gas industry with a view to fully recovering and utilizing natural gas scattered in remote areas. At the beginning of 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 automobile fuel. With the continuous development of the automobile industry, liquefied natural gas is used as a clean energy in automobiles. Natural gas is used as automobile fuel because it has less pollution to the atmosphere, is a clean fuel, and a high-quality alternative fuel for automobiles. The application of natural gas fuel t...

Claims

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Application Information

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