Dimensioning of the condenser and evaporator for the ejector bus air conditioning system and investigation according to different parameters

Air conditioning systems are available in almost all of today's buses, compressor is driven by a pulley which is connected to the engine and this situation brings extra load to the engine. In this study; a thermodynamic analyzes of the new system is done by turning classic vapor-compression refrigeration systems used today's buses into a new system with adding an ejector. We determined dimensions of the condensers and evaporators which are used in cooling systems with ejector and analyzed changes with regard to varies parameters. According to the obtained results by turning system into ejector used one there is nearly 15% increase at COP. Hence, It is determined there can be 5% decrease in the total heat transfer area of the condensers, 50% decrease in the total heat transfer area of the evaporator.