摘  要:汽车空调是空调技术在汽车上的应用，是空调领域的一个分支。其主要作用是向车室提供舒适的温度、湿度。随着社会经济的发展，汽车空调必将越来越普及，同时，人们对其性能的要求也越来越高，汽车空调正面临着许多新的课题。

　　　本文针对制冷量为24KW的大型客车空调系统介绍了汽车空调系统设计的全过程。本设计采用蒸气压缩式制冷循环，制冷剂用环保型制冷剂R134a，冷凝器和蒸发器均采用了较成熟的套片式换热器。本文介绍了：压缩机、膨胀阀及其它部件的选取，同时给出了冷凝器和蒸发器的设计计算过程。最后本文介绍了汽车空调系统的控制系统。

关键词：汽车空调，蒸气压缩式制冷循环，制冷剂R134a，控制系统，套片式

ABSTRACT:Automobile air conditioning is the application of air conditioning technology on automobile, and it is used to offer a comfortable environment. With the development of social economy, the Automobile air conditioner will be more and more Popular, and its capacity should be improved. Today, Automobile air conditioning confronts many new problems.

This article introduces the process of automobile air conditioning system design. This design adopts vapor compression refrigeration, and refrigerant uses a new refrigerant R134a which does less harm to the atmosphere than R12; The condenser and the evaporator uses the tube and band type, and they all are very efficient. This article introduces the quality of R134a and the choose of the compressor , expansion valve and other accessories. This article also introduces the design of condenser and evaporator, and offers a calculating program with friendly interface. Finally, this article presents the control system of this automobile air conditioning system.

Keywords: Automobile air conditioning  vapor compression refrigeration  the tube and band type  the fin-tube type