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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Textbook Question
Chapter 29, Problem 14RQ
An automatic expansion valve system responds to an overcharge of refrigerant by
A. low suction pressure.
B. high head pressure.
C. a flooded compressor.
D. both B and C
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Chapter 29 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 29 - What is the first thing a technician should know...Ch. 29 - What is the coil-to-air temperature relationship...Ch. 29 - When food dehydration is not a factor, the...Ch. 29 - Prob. 4RQCh. 29 - Why is minimum dehydration not used on every job?Ch. 29 - What is the coil-to-air temperature relationship...Ch. 29 - At what evaporator temperature does an ice maker...Ch. 29 - What is the evaporator coil-to-air relationship...Ch. 29 - What is meant by the term approach when dealing...Ch. 29 - How can an evaporator be tested for efficiency?
Ch. 29 - How can a condenser be tested for efficiency?Ch. 29 - How can a hermetic compressor be tested for...Ch. 29 - A T XV system responds to an overcharge of...Ch. 29 - An automatic expansion valve system responds to an...Ch. 29 - A capillary tube system responds to an overcharge...Ch. 29 - Prob. 16RQCh. 29 - Prob. 17RQCh. 29 - Capillary tube
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- When there is an excess potential energy during the fluid flow, it can be stored using O a. pressure relief valve. O b. pressure reducing valve. O C. accumulator. O d. pressure absorbing valve.arrow_forwardThe approach temperature for the evaporator isA. the difference between the suction and head pressuresconverted to temperature.B. the difference between the refrigerant boiling temperatureand the suction-line temperature.C. the difference between the refrigerant boiling temperatureand the inlet water temperature.D. the difference between the refrigerant boiling temperatureand the leaving-water temperature.arrow_forwardPressure relief valves: Select one: a. Open manually upon overloading in pressure O b. Open automatically upon overloading in pressure c. Two directional valve d. Oil flow control valvearrow_forward
- 1. Describe the operation of a compressor.arrow_forwardWhen a refrigeration system's suction line is noticeably cold instead of just being cool , it probably contains refrigerant . A. high -pressure liquid B. high -pressure vapor C. low-pressure liquid D. low -pressure vaporarrow_forwardIf a hot water reheat coil is installed with a two way modulating valve. A. The VAV box can only be used for a heating-only application . B. A variable volume circulating pump must be used. C. A constant volume circulating pump can be used. D. The VAV box can only be used for a cooling-only applicationarrow_forward
- Choose correct answer: An air compressor forms a _______________ A. isolated system B. combined open and isolated system C. closed system D. open systemarrow_forwardState the main advantage that a discus compressor's valve plate design has over a conventional piston-type compressor.arrow_forwardA capillary tube system responds to an overcharge of refrigerant by A. high suction pressure. B. high head pressure. C. a flooded compressor. D. all of the abovearrow_forward
- A T XV system responds to an overcharge of refrigerant by A. low suction pressure. B. high head pressure. C. a flooded compressor. D. both A and Barrow_forwardWhat advantage does a thermostatic expansion valve have over a capillary tube?arrow_forwardMost compressors are cooled using the ___________.arrow_forward
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