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 33, Problem 26RQ
A tankless water-heating system gets its heat from thesystem's_______.
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Quality means _______ when referring to a refrigerant.
Refrigerant works by absorbing ____ from the environment where cooling is required
Which component is primarily responsible
for the pressure in a cooling system?
Select one:
a. The thermostat
b. The water pump
c. The radiator cap
d. The surge tank
Chapter 33 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 33 - A hydronic heating system uses ______to move heat...Ch. 33 - Describe a zone in a hydronic heating system.Ch. 33 - Name four sources of heat commonly used for...Ch. 33 - Give three reasons that air is detrimental to a...Ch. 33 - Explain the difference between a wet-base and a...Ch. 33 - Where is air vented from a hydronic heating...Ch. 33 - The "point of no pressure change" is located at...Ch. 33 - The purpose of a limit control in a boiler is to...Ch. 33 - The device that relieves the pressure in a boiler...Ch. 33 - Describe the function of a low-water cutoff.
Ch. 33 - The relief valve setting for a typical...Ch. 33 - Describe how an air cushion tank functions in a...Ch. 33 - True or False: City water does not contain air.Ch. 33 - State two ways that air can get into a hydronic...Ch. 33 - The most common type of pump used for hydronic...Ch. 33 - Another term for pump pressure is feet of _______.Ch. 33 - Two types of zone control valves are the _____and...Ch. 33 - Why must expansion be considered when sizing...Ch. 33 - How is expansion in hot water pipes handled?Ch. 33 - Sketch the following systems: one pipe, two-pipe...Ch. 33 - Describe the advantage of a two-pipe...Ch. 33 - The pressure differential bypass valve is most...Ch. 33 - What is the heat output, in Btu/h, of a terminal...Ch. 33 - In a primary-secondary pumping arrangement, the...Ch. 33 - The temperature of the water at the outlet of a...Ch. 33 - A tankless water-heating system gets its heat from...Ch. 33 - How much of the sun's energy actually reaches the...Ch. 33 - The varying intensity of the sun's energy that...Ch. 33 - Drain-down systems would best be used in which...Ch. 33 - Why are solar systems intended to be used as a...
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- Heat expulsion occurs in what section of a heat pump system when operating in the heat mode? A. accumulator B. evaporator C. receiver D. condenserarrow_forwardC, The air pressure and temperature increase while the volume decrease O d. The air pressure and temperature decrease while the volume increase Which of the following does not help in collecting results in the mechanical heat pump? Select one: O a. Pressure gage b. Flowmeter C. Wattmeter O d. Receiverarrow_forwardChoose correct answer: In the heat pump system, the heat is usually rejected by ______________ A. expansion device B. compressor C. condenser D. evaporatorarrow_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_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_forwardWhen a chiller is used, the secondary refrigerant that circulates in the building is _____.arrow_forward
- Choose from the options listed inside the parenthesis: Objective of Refrigeration: maintain a (hot/cold) temperature in a (hot/warm/cold) space by (removing/supplying) (QL/QH) (from/to) it.arrow_forwardWhat is the purpose of the cooling tower in a water-cooled system?arrow_forwardWhat are mullion heaters?arrow_forward
- Where must a suction-line drier be placed in a heat pump after a motor burnout?arrow_forwardO a. None of these O b. Absolute pressures and heat capacity ratio O C. Absolute pressures and temperatures O d. Gauge pressures and temperatures In perfect gas law experiment, the pressure pump coupling is used to connect the vacuum vessel to the pump discharge connector. Select one: O a. False O b. True Which part in the mechanical heat pump is used to reduce the refrigerant pnessule? Select one:arrow_forwardwithout the presence of ____ there will be no cooling effect to the refrigeration system. it is the blood of the refrigeration system due to the effect of its evaporation processarrow_forward
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