N2 - Thermodynamic analysis of car air cooler is presented in this paper. Typical refrigerator cycles are studied. The first: with uncontrolled orifice and non controlled compressor and the second one with the thermostatic controlled expansion valve and externally controlled compressor. The influence of the refrigerant decrease and the change of the air temperature which gets to exchangers on the refrigeration efficiency of the system; was analysed. Also, its effectiveness and the power required to drive the compressor were investigated. The impact of improper refrigerant charge on the performance of air conditioning systems was also checked. L1 - http://journals.pan.pl/Content/94172/PDF/07_paper.pdf L2 - http://journals.pan.pl/Content/94172 PY - 2010 IS - No 4 October EP - 80 DO - 10.2478/v10173-010-0029-2 KW - air conditioning KW - Thermal analysis KW - HVAC A1 - Trzebiński, Daniel A1 - Szczygieł, Ireneusz PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences DA - 2010 T1 - Thermal analysis of car air conditioning SP - 71 UR - http://journals.pan.pl/dlibra/publication/edition/94172 T2 - Archives of Thermodynamics