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1、制冷空调专业英语,Unit Four,Lesson 13 Thermodynamic Principles of Refrigeration Lesson 14 Mechanical Refrigeration Principles Lesson 15 Evaporation Lesson 16 Condensation,Lesson 16 Condensation,New Words & Expressions,Text,Notes to the Text,Exercise,New Words & Expressions,Lesson 16,潜在的, 隐藏的,condensation n .
2、,冷凝,possess vt .,具有;拥有; 占有;,outlet n .,出口,integral part,主要部分, 整数部分 积分部分,integral a . n .,组成的，完整的，整体，总体,reservoir n . vt .,储存器，容量，蓄水池 储藏,convert vt.,使转变, 转换.,使.改变信仰,extract n. vt.,汁, 榨出物, 拔出, 析取, 吸取,latent adj. n.,冷凝机组,condensing unit,New Words & Expressions,Lesson 16,设备，装置，装备,water-cooled condenser,
3、水冷式冷凝器,air - cooled condenser,空气冷却式冷凝器,circulating water condenser,循环水冷凝器,partial adj.,部分的, 局部的,sprinkler n .,洒（喷）水设备,spray condenser,淋浇式冷凝器,evaporative a .,蒸发的,marine n. adj.,舰队, 海运业, 航海的,unitary a .,整体的,installation v .,Text,The refrigerant, upon leaving the compressor as a surperheated gas, enter
4、s a condenser through the discharge line. The purpose of the condenser is to provide a means by which the vapor may eject the heat absorbed during its passage through the evaporator, as well as the heat of compression, and reconvert it to a liquid. 1,制冷剂在作为过热气体离开压缩机时，通过排气管道进入冷凝器。冷凝器的作用就是提供一种设施，通过这种设
5、施可以使蒸汽排出它在通过蒸发器期间吸收的热和压缩热，并把它恢复到液体状态。,Lesson 16,Text:,The condenser is an arrangement of pipes or tubes, possessing high heat conduction properties. These pipes of tubes are exposed to a continuous flow of cooling medium, usually water or air, which absorbs the heat from the refrigerant.,Lesson 16,冷
6、凝器是由成排排列的管子构成的，它们具有高温传导热特性。这些管子受到连续不断流动的冷却介质的作用，通常这些冷冻介质是水或空气，它们从制冷剂那里吸收热。,Text:,Connected to the outlet of the condenser, and in some systems forming an integral part of the condenser itself, is a tank or reservoir known as liquid receiver. The purpose of the latter is to receive the liquid refrige
7、rant upon condensing and to hold it until such time as it is required by the evaporator. 2 The liquid receiver should be large enough to hold the entire refrigerant of the system in a liquid state.,Lesson 16,连接冷凝器出口并在一些系统中与冷凝器本身构成一个整体部分的是叫储液桶的储存器。储液桶的用途是储存冷凝成液体的制冷剂，并把它保存起来，直到蒸发器需要时为止。储液桶的大小应该足够容纳这个制
8、冷系统所使用的全部液体制冷剂。,Text:,The compressor, the condenser, and the liquid receiver combination is referred to as the condensing unit because it requires the services of all three of these pieces of equipment to complete the function of the high-pressure side of a vapor compression system.,Lesson 16,压缩机、冷凝
9、器和储液桶连在一起被称作压缩冷凝机组。因为为了完成蒸汽压缩系统中高压侧的功能，它需要这个机组中所有三个部分的运行和操作。,Text:,The function of the condenser is to convert the superheated gas to its liquid form.It is a heat exchanger involving the principle of temperature differential. It extracts from the vapor the latent heat of vaporization and the sensibl
10、e heat obsorbed by the refgerant in the evaporator, plus the superheat resulting from compression. 3 This results in transforming the vapor to a liquid at the boiling-point temperature corresponding to the pressure exerted by the compressor.,Lesson 16,冷凝器的功能是把过热的气体转变成液体状态。它是一个涉及温差原理的热交换器，它提取从蒸汽中排除的蒸
11、发热和在蒸发器中由制冷剂吸收显热以及由压缩造成的过热。这就使沸点温度下的蒸汽转变成液体，把蒸汽转变成液体。沸点是与压缩机施加压力相对应的。,Text:,The condensor is the heat exchanger in which the refrigerant condenses. Heat flows from the compressed gas to the cooling medium and condenese during the process. The pressure at which the gas condenses is a function of the
12、temperature maintained within the condenser. The cooling medium used may by air, water or a combination of the two. The pressure at which the gas condenses is called the condensing pressure, and the corresponding temperature is called the condensing temperature. The condensed refrigerant travels fro
13、m the condenser to the expansion valve through the liquid line.,Lesson 16,冷凝器是制冷剂在其中冷凝的热交换器。在加工期间，热量从压缩气体流动到冷却介质，从而使气体冷凝。气体冷凝的压力是冷凝器内所保持温度的函数。所用冷却介质可以是空气，也可以是水或两者的结合。使气体冷凝的压力叫做冷凝压力，与其对应的温度叫做冷凝温度。冷凝的制冷剂通过液体导管从冷凝器传送到调节阀。,Text:,The expansion valve regulates the flow of liquid refrigerant to the evapora
14、tor so that the evaporator is maintained nearly full of liquid refrigerant, but so that liquid refrigerant does not enter the suction line. Upon leaving the expansion valve, the liquid enters the evaporator, and the cycle starts a new one.,Lesson 16,调节阀调节控制着液体制冷剂流向蒸发器的流量，以便使蒸发器保持着几乎充满了液体制冷剂的状态。假使液体制
15、冷剂充满了蒸发器那么调节阀就会调节控制液体制冷剂不再进入吸入导管。当离开调节阀时，液体制冷剂进入蒸发器，制冷循环又重新开始。,Text:,Condensers of refrigeration machines are classified as : water-cooled condensers and air - cooled condensers. The water-cooled is called circulating water condenser. The condensers in which heat is removed by heating and partial ev
16、aporation of water are called sprinkler or spray condensers. Condensers in which heat is removed only by evaporation of water are called evaporative condensers.,Lesson 16,制冷机的冷凝器可分成：水冷式冷凝器和气冷式冷凝器。它是通过水的加热和部分液化将热量带走，这种水冷冷凝器叫循环水冷凝器。通过使水受热和部分蒸发排出热的冷凝器叫淋浇式冷凝器。只是通过水蒸发排除热的冷凝器叫蒸发式冷凝器。,Text:,Circulating water condensers are the only ones in marine refrigerantion plants. Several types are manufactured: horizontal shell and tube, shell and coil, unitary, vertical shell and tube, etc. Horizontal sh
