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 24, Problem 4RQ
The four types of charges that the TXV uses to control refrigerant flow are ____, ____, ____, and ______.
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Chapter 24 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 24 - Which is not a pressure or force acting on a TXV...Ch. 24 - The needle and seat of a TXV are normally made of...Ch. 24 - The TXV tries to maintain a constant _____in...Ch. 24 - The four types of charges that the TXV uses to...Ch. 24 - Prob. 5RQCh. 24 - When do some TXVs require an external an external...Ch. 24 - Draw a diagram showing how an external equalizer...Ch. 24 - The TXV responds to an increased heat load by A....Ch. 24 - The three factors that determine the capacity of a...Ch. 24 - Explain why the entering liquid pressure has no...
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- When should a service technician use the subcooling method of charging air-conditioning and heat pump systems?arrow_forwardTechnician A says that when the A7C system is off, the refrigerant occupies the system as a liquid and its pressure is the same throughout the system. Technician B says that refrigerant is pumped out of the compressor as a high-pressure, high-temperature vapor and is sent to the condenser. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardThe indoor coil is called a condenser during the______season.arrow_forward
- Why are digital scales preferred over other types for charging refrigeration and air-conditioning systems?arrow_forwardWhich of the following should be turned off while working on the compressor circuit? A. The indoor unit fan B. The unit disconnect C. The thermostat D. The main power supply to the buildingarrow_forwardWhile discussing the operation of air-conditioning systems: Technician A says that in order for the refrigerant to release heat, it must be at a low temperature and pressure. Technician B says that in order for the refrigerant to absorb heat, it must be at a high temperature and pressure. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- True or False: The two types of defrosts used with low-temperature fixtures are hot gas and electric defrost.arrow_forwardAre federal excise taxes on reclaimed refrigerants the same as those for new refrigerants?arrow_forwardWhile discussing the reaction by a refrigerant to heat: Technician A says that to absorb heat, the temperature and pressure of the refrigerant are kept low. Technician B says that to dissipate heat, the temperature and pressure are kept high. Who is correct?arrow_forward
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