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 41, Problem 16RQ
Most condensers will subcool the refrigerant to between ____°F below the condensing temperature of the refrigerant.
A. 0 and 5
B. 5 and 10
C. 10 and 20
D. 20 and 30
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Under high evaporator heat loads , the temperature difference between the condenser and the ambient will be ?
Higher
Unpredictable
Unchanged
Lower
Choose correct answer:
Usually condenser pressure in refrigeration system is ____________
a.
None of the answers given
b.
800000 N/m2
c.
800 Pa
d.
80000 N/m2
Which of the following tube-in-tube condensers can be cleaned mechanically using a special brush?
a) serpentine type
b) flanged ends
c) serpentine shell
It is the upper limit of the compression ratio that compressor manufacturers recommend.
b) 3: 1
a) 18: 1
c) 12: 1
Chapter 41 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 41 - Before installing a gauge on the high-pressure...Ch. 41 - Capacitors should be shorted with a(n)...Ch. 41 - The high- and low-side pressures on an operating...Ch. 41 - Why do most air-conditioning systems not need a...Ch. 41 - A typical standard-efficiency evaporator under...Ch. 41 - The typical temperature difference between the...Ch. 41 - When the ambient outside air temperature isand the...Ch. 41 - When the outside ambient air temperature is 90F,...Ch. 41 - If a condensing pressure is 260 psig for R-22,...Ch. 41 - How is high efficiency accomplished in an...
Ch. 41 - True or False: When troubleshooting a small...Ch. 41 - The suction gas may have a high superheat if the...Ch. 41 - If the suction pressure is low and the suction...Ch. 41 - What electrical test instrument is used to measure...Ch. 41 - What electrical test instrument is used to measure...Ch. 41 - Most condensers will subcool the refrigerant to...Ch. 41 - What are two types of fixed-bore metering devices?Ch. 41 - It no crankcase heat is at the compressor, what...Ch. 41 - What is the purpose of the internal overload...Ch. 41 - If a condenser circuit breaker is tripped, you...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A typical temperature relationship between a high-efficiency condenser and the ambient temperature is A. 10F. B. 20F. C. 30F. D. 40F.arrow_forwardWhat could an oily dust spot on a condenser or evaporator coil indicate?arrow_forwardTwo methods for accomplishing defrost on low-temperature refrigeration systems are ____and___. Describe how the components in questions 19-23 enhance the refrigeration cycle.arrow_forward
- After heat is absorbed into a condenser medium in a water-cooled condenser, the heat can be deposited in one of two places. What are they?arrow_forwardWhy should a condenser be covered with a sheet before leak checking it with an electronic detector?arrow_forwardName two problems a refrigeration system may have if the condensing unit is exposed to a low-ambient condition when not equipped with a low-ambient head pressure control valve.arrow_forward
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