This ram air is generated by the aircraft flight speed and is driven into the primary heat exchanger by a special scoop. This scoop has often a variable geometry electrically driven depending on of the flight phase (take off, cruise, etc.). 5 th step :

一、重点掌握压缩式制冷的相关基础理论与技术知识;了解其他制冷方式原理; 二、能够利用制冷原理分析和解释装置特性 三、能够利用制冷基础图表(lgp-h图)分析装置和各零部件运行状态

一．冷凝器的种类和工作原理 1、水冷冷凝器 2、卧式壳管冷凝器 3、 立式壳管冷凝器 4、 套管式冷凝器 5、 风冷冷凝器 6、 蒸发冷凝器 7、 淋水式冷凝器

1. Solid sorption concepts Adsorption Adsorptiv adsorbent-adsorbatePhysical adsorption .Tragergas zeolite-water, silica gel-water, activated carbon- methanol/ammonia (endotherm) Chemical adsorption CaCl2-ammonia, Metal hydride Adsorbat hydrogen

Chapter One Introduction Heat: Heat is a kind of energy, Which occurs in the transfer process. (the transferred energy contains the orderly work and disorderly heat) Energy: Concept of energy is used to specify the state of a system in thermodynamics Heat Transfer: kind of application science, is concerned with analysis of the rate of heat transfer taking place in system, or with the research on the heat-transfer reqularity

4-1对流换热概述 4-2层流流动换热的微分方程组 43对流换热过程的相似理论 4-4边界层理论 4-5紊流流动换热

8-1传热过程 8-2换热器的类型 8-3换热器的传热计算

7-1被透明介质隔开的黑体表面间的辐射换热 7-2被透明介质隔开的灰体表面间的辐射换热

6-1热辐射的基本概念 6-2黑体辐射和吸收的基本性质 6-3实际物体的辐射和吸收

5-1管(槽)内流体受迫对流换热计算 5-2流体外掠物体的对流换热计算 5-3自然对流换热计算 5-4液体沸腾换热计算 5-5蒸汽凝结换热计算