Thermal analysis of car air cooler

• Autorzy: Trzebiński D. , Szczygieł I.
• Języki publikacji: EN

Abstrakty

EN

People more and more time spend in vehicles (cars, trains, planes, buses or subway). This is the reason why the thermal comfort has more and more paid attention. In one hand people try to make comfort (in each situation) whatever they are at home, office or in car. In the other hand the thermal conditions in the cabin of vehicles directly influences on the driver's and passengers safety. The investigations presented in this paper are the part of larger project, which assumes complex modelling of thermal state of car interior. First part assumes creation of CFD model of car interior. Second part is thermodynamic modelling of air cooling unit in order to estimate the influence of basic cabin parameters on the A/C unit COP, power consumption of the unit and fuel consumption of the vehicle. In the paper thermodynamic analysis of car air cooler is presented. Typical refrigerator cycles are studied: one with uncontrolled orifice and non controlled compressor, second with thermostatic controlled expansion valve and externally controlled compressor. The influence of refrigerant charge and the inlet air temperature on the coefficient of performance, exergy efficiency, heat flux and temperature in evaporator and compressor net power were investigated. The impact of improper refrigerant charge on the performance of A/C systems was also checked.

Słowa kluczowe

EN

car air conditioning; refrigerant; thermal comfort; thermodynamic cycle

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 2
• Strony: 439--446
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Trzebiński D.

autor

Szczygieł I.

• Silesian University of Technology, Institute of Thermal Technology Konarskiego Street 22, 44-100 Gliwice, Poland tel.: [phone], fax: [phone],

Bibliografia

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