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 46, Problem 1RQ
A typical room air-conditioning unit has _____(one or two) fan motors.
Expert Solution & Answer
To determine
To Fill: The correct word for the given sentence.
Answer to Problem 1RQ
One double shaft fan motor is used inroom air-conditioning unit.
Explanation of Solution
The air-conditioning system absorbs the heat that leaks into the structure and deposit it outside the structure. The room air conditioners remove the excess heat and moisture from the interior of the room and sent it to the surroundings. The parts of air-conditioning unit are:
- Compressor
- Fan
- Condenser coils
- Evaporator coils
- Refrigerant.
The room air-conditioning unit is classified either window or split type. In both these types, the air-conditioning system has only one double−shaft fan motor for the evaporator and condenser. Thus, there will be only fan in air-conditioning unit.
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Chapter 46 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 46 - A typical room air-conditioning unit has _____(one...Ch. 46 - Prob. 2RQCh. 46 - The line that carries refrigerant into the...Ch. 46 - Prob. 4RQCh. 46 - Prob. 5RQCh. 46 - Prob. 6RQCh. 46 - Prob. 7RQCh. 46 - Prob. 8RQCh. 46 - Prob. 9RQCh. 46 - Prob. 10RQ
Ch. 46 - Prob. 11RQCh. 46 - Prob. 12RQCh. 46 - Describe the operation of the exhaust and...Ch. 46 - Why should gauges be installed only after there is...Ch. 46 - Prob. 15RQCh. 46 - Prob. 16RQCh. 46 - During the heat pump heating cycle, the hot gas...Ch. 46 - What are two methods used to evaporate condensate...
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- Need answers from 1-17arrow_forward8. What would be done to increase the compressor speed on a belt-driven compressor? A. Decrease drive pulley size B. Increase drive pulley size C. Increase driven pulley size 13. What lubricates the refrigeration compressor? A. Refrigerant B. Moisture C. Desiccants D. Oil D. Both A andC 9. Describe the reciprocating compressor piston, rod, crankshaft, valves, valve plate, head, shaft seal, internal motor overload device, pilot-duty motor overload de- vice, and coupling. 10. Name two things in the design of a reciprocating com- pressor that control the efficiency of the compressor. А. 14. What can the service technician do to keep the refrig- eration system operating at peak efficiency? 15. List the main advantage that a discus compressor's valve plate design has over a conventional piston-type В. 11. At what speeds in rpm does a hermetic compressor nor- mally turn? A. 1750 В. 3450 C. 4500 D. Both A and B 12. What effect does a slight amount of liquid refrigerant have on a compressor…arrow_forward_controls on/off of the motor, when the air compressor tank reaches the specified bar. O a. Electric Motor. O b. Auto drain. O C. Compressor. d. Pressure Switch.arrow_forward
- to run d. both a and b 44. Ifa thermostatic expansion valve's thermal bulb came loose from the suction line at the outlet of the evaporator, whích of the following could result? The bulb pressure would increase and the c. thermostatic expansion valve would open. b. The superheat in the evaporator would decrease. a. Liquid refrigerant would flow back to the compressor. d. All of the above are correct. 45. If the thermal bulb assembly develops a leak, what will occur? All of the system's refrigerant will leak a. The valve will open to allow more c. refrigerant to flow. d. It will have no effect on system operation. out. b. The bulb pressure will reduce and the valve will close. 46. The purpose of an externally equalized thermostatic expansion valve is to compensate for excessive evaporator pressure drop b. allow system to equalize faster a. prevent the expansion valve from frosting up d. c. allow refrigerant to expand in the compressor 47. The primary function of an expansion device is…arrow_forwardprinciple of Inverter air conditioner and energy saving.arrow_forwardRefrigerant works by absorbing ____ from the environment where cooling is requiredarrow_forward
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