Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 10, Problem 2RQ
How is the refrigerant cylinder pressure kept above the system pressure when a system is being charged with vapor from a cylinder?
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Chapter 10 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 10 - How can liquid refrigerant be added to the...Ch. 10 - How is the refrigerant cylinder pressure kept...Ch. 10 - Why does the refrigerant pressure decrease in a...Ch. 10 - What type of equipment normally has the...Ch. 10 - Why are digital scales preferred over other types...Ch. 10 - How does a graduated cylinder account for the...Ch. 10 - What methods besides weighing and measuring are...Ch. 10 - Two or more refrigerants combined together to...Ch. 10 - Define temperature glide, and give examples of...Ch. 10 - A portion of a refrigerant blend that is...
Ch. 10 - What is the main difference between a zeotropic...Ch. 10 - What is meant by "restricting" liquid refrigerant...Ch. 10 - What causes fractionation in certain refrigerant...Ch. 10 - When should a service technician use the...Ch. 10 - A service technician is charging an...Ch. 10 - A technician takes the following readings on an...
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- How can liquid refrigerant be added to the refrigeration system when the system is out of refrigerant?arrow_forwardWhy are there more safety precautions for R-410A than with other popular refrigerants like R-22 and R-404A?arrow_forwardWhat effect does a slight amount of liquid refrigerant have on a compressor over a long period of time?arrow_forward
- Where is the only permanent suction line on a heat pump?arrow_forwardIf the evaporating pressure was 76 psig for R-22 and the compressor inlet temperature was 65F, what would be the total superheat entering the compressor? A. 11F B. 21F C. 10F D. 20Farrow_forwardWhy is a circulating brine system more attractive for ship refrigeration than individual evaporators?arrow_forward
- What can the service technician do to keep the refrigeration system operating at peak efficiency?arrow_forwardThe device that relieves the pressure in a boiler when it is above the design working pressure is the ________valve.arrow_forwardWhat are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration applications?arrow_forward
- The approach temperature for the evaporator is A. the difference between the suction and head pressures converted to temperature. B. the difference between the refrigerant boiling temperature and the suction-line temperature. C. the difference between the refrigerant boiling temperature and the inlet water temperature. D. the difference between the refrigerant boiling temperature and the leaving-water temperature.arrow_forwardWhat are mullion heaters?arrow_forward
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