Single-Stage versus Two-Stage Efficiency Considerations
Single-Stage versus Two-Stage Efficiency Considerations (2002)-Over the years, industry engineers have often discussed the relative merits of two-stage versus single-stage central ammonia refrigeration systems. To this day, however, pertinent considerations continue to be overlooked. Engineers should review the entire system using such tools as Mollier diagrams to determine which of the relevant factors will significantly influence a particular compressor selection. Principal among these considerations are the type of compressor, system operating conditions, condenser operating parameters and efficiency, and vessel sizes and types. This paper illustrates how these factors can affect engineering decisions made in designing or expanding refrigeration systems.
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