论文部分内容阅读
一、前言制冷工程中长期以来采用氟利昂族中的某些化合物作为制冷剂,如R12、R22,R11、R113、R114、R13等。这些制冷剂日积月累地散失在大气中,使得大气中的臭氧含量降低,造成某些地区的大气层组分异于常态,还产生了温室效应,严重地影响了生态环境。因此必须采用其它品种的制冷剂来代替这些有害的制冷剂,以保持人类适应的生态环境。
I. Introduction Refrigeration projects have long used certain Freons freon as a refrigerant, such as R12, R22, R11, R113, R114, R13 and so on. Over time and again, these refrigerants are lost in the atmosphere, causing the ozone content in the atmosphere to decrease, causing the atmospheric components in some areas to deviate from the normal ones and causing the greenhouse effect, which seriously affects the ecological environment. Therefore, it is necessary to use other types of refrigerants instead of these harmful refrigerants in order to maintain the ecological environment adapted to human beings.