轿车空调系统设计+CAD图纸
本论文主要针对目前比较普遍的轿车车型,通过热力计算以及对压缩机、换热器、储液干燥器等的选用,最终完成对轿车空调系统的设计。
毕业论文关键词：轿车空调；设计
Design of Car air conditioning system
Abstract：With the popularity of vehicles in the public life, daily contact with the car crowd is also more and more, in a certain economic basis, the comfort of the car is often the reference standard for people to choose the car. Especially in the hot summer or cold winter, the air conditioning will undoubtedly give car considerably. The air conditioning system, it is in order to achieve the carriage of air cooling and heating, ventilation and gas purification installation. It can not only provide a comfortable carriage of the car, and can be reduced under the driver's driving fatigue strength, to ensure safe driving. Now air conditioning assembly has long been an important measure of the car function is not one of the markers available. Now due to global climate change, the need for car buyers in the car air conditioning is also increasingly urgent, the vehicle air conditioning can meet the requirements of the quality of the material is also getting higher and higher.
This paper mainly aimed at the current relatively common car models, through the thermal calculation and the compressor, heat exchanger, liquid storage dryer, etc., to complete the final design of the car air conditioning system.
Keywords: Car Air Conditioning Design
目 录
1 绪论 1
2 方案论证 4
2.1 汽车安装空调的提出4
2.2 汽车空调的特点4
2.3 汽车空调的组成5
2.3.1 汽车空调压缩机的选用 5
2.3.2 蒸发器的选用 7
2.3.3 冷凝器的选用 9
2.3.4 节流膨胀结构 11
2.3.5 其它部件 12
2.4 轿车空调制冷剂的选择13
2.5 初步方案14
3 轿车空调系统的计算及设计 15
3.1 确定空调制冷量 15
3.1.1 工况条件的确定 15
3.1.2 制冷量的确定 15
3.2 压缩机的选配 15
3.2.1 循环状态参数的确定 15
3.2.2 循环热力计算 16
3.2.3 压缩机选配 17
3.3 膨胀阀的选择 18
3.4 蒸发器的设计计算 19
3.4.1 工况参数确定 19
3.4.2 初步规划 19
3.4.3 干工况和湿工况下空气侧表面传热系数的计算 21
3.4.4 计算析湿系数系数与湿工况下空气侧表面传热系数 22
3.4.5 初步估算迎风面积和总传热面积 22
3.4.6 计算制冷剂侧表面传热系数 23
3.4.7 计算总传热系数和传热面积 26
3.4.8 计算空气侧阻力损失△Pa27
3.5 冷凝器设计计算 27
3.5.1 工况参数确定 28
3.5.2 结构初步规划 29
3.5.3 空气侧表面传热系数的计算 30
3.5.4 制冷剂侧面传热系数αr 30
3.5.5 冷凝器长度计算 32