Transcritical carbon dioxide system and optimization coupling method thereof

A carbon dioxide and transcritical technology, applied in refrigeration and liquefaction, lighting and heating equipment, gas cycle refrigerators, etc., to solve adaptability problems and improve system performance greatly

Active Publication Date: 2019-02-12
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the parameter selection and optimization problems of this type of system under actual application conditions can be solved

Method used

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  • Transcritical carbon dioxide system and optimization coupling method thereof
  • Transcritical carbon dioxide system and optimization coupling method thereof
  • Transcritical carbon dioxide system and optimization coupling method thereof

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] see figure 1 As shown, the present invention provides a transcritical carbon dioxide system, including a circulating water system, a precooler system 200 and a transcritical carbon dioxide circulation system 100 .

[0029] The circulating water system includes a system water inlet 1, a three-way water diversion valve 2, a three-way water collection valve 5 and a system water outlet 6.

[0030] The precooler system 200 includes a precooling system compressor 21 , a precooling system condenser 22 , a thermal expansion valve 23 , and a precooling system evaporator 24 .

[0031] The transcritical carbon dioxide cycle system 100 includes CO 2 Compressor 11, CO 2 Gas cooler 12, electronic expansion valve 13 and CO 2 Evaporator 15.

[0032] see figure 1 As shown, in the circulating water system, the system water inlet 1 is connected to the inlet of the ...

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Abstract

The invention discloses a transcritical carbon dioxide system and an optimization coupling method of the transcritical carbon dioxide system. According to the system, a conventional transcritical carbon dioxide system cycle is taken as a main body, and a conventional subcritical R134a refrigeration cycle is taken as a precooler. By means of the optimization coupling method, thermodynamic operationparameters of the system can be accurately predicted according to hardware parameters configured in the system and set operation conditions, and optimization can be carried out according to the operation conditions of the system, wherein the optimization objects are the optimal exhaust pressure of a transcritical carbon dioxide circulation part and the optimal intermediate temperature of the system. Through the proper use of a full coupling mathematical model, the performance of the type of unit can be accurately predicted under specific working conditions, related systems can be theoretically studied, the experimental progress can be guided through the prediction of theoretical performance as well, and even the design process of the type of machine can be guided according to the performance conditions that the system can achieve, and good reference significance is provided for related industries.

Description

technical field [0001] The invention belongs to the technical field of heating, ventilation, refrigeration and heat pumps, and relates to a transcritical carbon dioxide system optimization coupling method. Background technique [0002] In recent years, with the rapid development of the national economy, the interest orientation has become increasingly serious, a large number of unhealthy energy supply methods and technological applications regardless of environmental costs have brought a huge threat to the ecological environment we live in, resulting in such things as air pollution, smog Severe environmental problems such as haze invasion and ozone layer hole are directly related to human living conditions. In the field of heating, ventilation, refrigeration and heat pump technology, due to the prosperity and development of civil and commercial applications in recent years, building cooling and heating energy supply, especially heating energy supply has occupied an increasin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/00F25B41/00F25B41/40
CPCF25B9/008F25B2309/061F25B41/40
Inventor 曹锋宋昱龙李明佳
Owner XI AN JIAOTONG UNIV
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