二、制冷压缩机在上期出版的本专题文章第一部分中已经叙述了往复式压缩机的布置方式,现在继续叙述这种型式压缩机的性能以说明从启动到运转工况它对蒸气的作用,并且也阐明工作过程的热力学。压缩机通常是在系统的两侧(低压侧和高压侧)已经平衡后启动的,或者是为了便于启 Refrigeration Compressors The layout of reciprocating compressors has been described in the first part of this feature article, published in the last issue. The performance of this type of compressor will now be described in order to illustrate its effect on steam from start up to operating conditions, It also illustrates the thermodynamics of working processes. Compressors are usually started on both sides of the system (low-pressure side and high-pressure side) have been balanced, or in order to facilitate