Commercial refrigeration Chapter 10 Questions and Answers 100% Correct
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Commercial refrigeration
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Commercial Refrigeration
Commercial refrigeration Chapter 10 Questions and Answers 100% CorrectCommercial refrigeration Chapter 10 Questions and Answers 100% CorrectCommercial refrigeration Chapter 10 Questions and Answers 100% Correct
What is the proper temperature of a meat case? - ANSWER - 28 to32°
What is a parall...
Commercial refrigeration Chapter
10 Questions and Answers 100%
Correct
What is the proper temperature of a meat case? - ANSWER - 28 to32°
What is a parallel rack system - ANSWER - A system of multiple compressors that
share a common source of refrigerant and oil to refrigerate a group of cases.
Why are parallel rack systems used in supermarket refrigeration? - ANSWER - They
provide excellent temperature control and affective capacity control and they are
more energy efficient then separate condensing units
With such long piping runs how does the rack system ensure oil is return to the
compressors? - ANSWER - By using oil separators to capture oil before it leaves the
compressor rack
What determines when rack comepressers cycle on and off - ANSWER - Pressure and
temperature controls on the rack monitor the refrigeration load and cycle the
compressors
How are case temperatures regulated in a parallel rack system - ANSWER - EPR
valve
In supermarkets where are the EPR valve is located - ANSWER - At the compressor
rack suction header
For every degree of sub cooling at the Trev how much of an increase in evaporator
capacity will there be? - ANSWER - 0.5 percent
What is the maximum subcooling used in many modern supermarket refrigeration
systems? - ANSWER - 45 degrees
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