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 47, Problem 17RQ
The purge unit in a low-pressure chiller removes
A. overcharge of refrigerant.
B. excess oil.
C.condensable refrigerant.
D. noncondensables.
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Chapter 47 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 47 - When a chiller is used, the secondary refrigerant...Ch. 47 - What are the two basic categories of chillers?Ch. 47 - Three types of compressors are used for chillers:...Ch. 47 - Blocked suction cylinder unloading is accomplished...Ch. 47 - True or False: The capacity control for a screw...Ch. 47 - Which of the following methods are used to...Ch. 47 - Describe a direct-expansion versus a flooded...Ch. 47 - What is the purpose of multiple passes in a...Ch. 47 - The approach temperature for the evaporator is A....Ch. 47 - What type of water-cooled condenser is used in...
Ch. 47 - The compressor used in low-pressure chillers is...Ch. 47 - List the types of metering devices used with...Ch. 47 - The subcooling temperature in a condenser can be...Ch. 47 - What causes a surge in a centrifugal chiller?Ch. 47 - Why is it important to keep an operating log on a...Ch. 47 - Which of the following metering devices is used in...Ch. 47 - The purge unit in a low-pressure chiller removes...Ch. 47 - In an absorption chiller, _______is used to create...Ch. 47 - The types of energy used to power a typical...Ch. 47 - True or False: Some absorption machines are...Ch. 47 - What is the common refrigerant used in absorption...Ch. 47 - How is capacity control accomplished with a...Ch. 47 - True or False: Single-phase induction,...Ch. 47 - Describe how a wye-delta is started and runs.Ch. 47 - Why is it important to have phase protection for...
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- What kind of circuit balancing valve is used in the hot and chilled water piping? a. balancing globe valve b. shut-off balancing valve c. pressure balancing valve d. pressure by-pass valvearrow_forwardO b. True Which part in the mechanical heat pump is used to reduce the refrigerant pressure? Select one: O a. Expansion valve Compressor O c. Condenser O d. Evaporatorarrow_forward17- Where does liquid ammonia change into its low pressure vapors? a. Absorbor b. Generator c. Condenser d. Evaporator Clear my choicearrow_forward
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