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 22RQ
How is capacity control accomplished with a steam-driven absorption refrigeration machine?
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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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- Where must a suction-line drier be placed in a heat pump after a motor burnout?arrow_forwardThree advantages of unitary, stand-alone refrigeration modules in supermarket refrigeration are ______and _______.arrow_forwardWhy is a circulating brine system more attractive for ship refrigeration than individual evaporators?arrow_forward
- Describe cascade refrigeration and tell why more than one refrigerant is used.arrow_forwardBriefly explain what is meant by a subcritical refrigeration cycle, and list its four processes.arrow_forwardWhat are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration applications?arrow_forward
- 10. Define refrigeration effect.arrow_forwardI. ESSAY/ ENUMERATION 1. GIVE ATLEAST 5 ADVANTAGES AND 5 DISADVANTAGES OF INORGANIC REFRIGERANTS. 2. HOW DOES A REFRIGERANT WORKS IN A REFRIGERATION SYSTEM? 3. DIFFERENTIATE POSITIVE AZEOTTROPES AND NEGATIVE AZEOTROPES IN TERMS OF THEIR APPLICATION IN REFRIGERATION SYSTEMS. 4. THE FOUR MAIN COMPONENTS OF A REFRIGERATION SYSTEM ARE COMPRESSOR, CONDENSER, EVAPORATOR AND AN EXPANSION VALVE. EXPLAIN BRIFLY THE FUNCTION OF EACH COMPONENT AND THE FLOW OF THE CYCLE.arrow_forward8) Which of the following components is NOT within the refrigeration cycle?A: Expansion valveB: CompressorC: EvaporatorD: Extractorarrow_forward
- Which part in the mechanical heat pump is used to increase the refrigerant pressure? Select one: a. Condenser b. Evaporator c. Expansion valve d. Compressorarrow_forwardHigh- temperature source Generator Condenser 3+ Expansion valve Valve Pump Absorber Evaporator Refrigerated region Cooling water In the absorption refrigeration cycle, which of the follov the compressor in the vapor-compression cycle? componennts replace absorber, pump & generator condenser, expansion valve & evaporator generator, condenser & expansion valve condenser, generator & pump evaporator, absorber & pump expansion valve, evaporator & absorber Weak solution Strong solutionarrow_forwardB- Compare between the following: 1-Direct and reverse return closed piping systems. 2- Single stage and two stages vapor compression refrigeration systems. 3- Primary and secondary refrigerants.arrow_forward
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