Refrigeration and Air Conditioning Technology - Package
8th Edition
ISBN: 9781337217989
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 10, Problem 14RQ
When should a service technician use the subcooling method of charging air-conditioning and heat pump systems?
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Chapter 10 Solutions
Refrigeration and Air Conditioning Technology - Package
Ch. 10 - How can liquid refrigerant be added to the...Ch. 10 - How is the refrigerant cylinder pressure kept...Ch. 10 - Why does the refrigerant pressure decrease in a...Ch. 10 - What type of equipment normally has the...Ch. 10 - Why are digital scales preferred over other types...Ch. 10 - How does a graduated cylinder account for the...Ch. 10 - What methods besides weighing and measuring are...Ch. 10 - Two or more refrigerants combined together to...Ch. 10 - Define temperature glide, and give examples of...Ch. 10 - A portion of a refrigerant blend that is...
Ch. 10 - What is the main difference between a zeotropic...Ch. 10 - What is meant by "restricting" liquid refrigerant...Ch. 10 - What causes fractionation in certain refrigerant...Ch. 10 - When should a service technician use the...Ch. 10 - A service technician is charging an...Ch. 10 - A technician takes the following readings on an...
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- Which of the following statements about PTC heaters is not true? Some vehicles have a PTC heating element in the heater core. Some vehicles have a PTC element installed in an air duct from the blower housing to increase the air temperature in the ducts. PTC heaters are electronically controlled and work with the cooling system to provide hot coolant. PTC elements are small ceramic stones that react quickly to changes in current.arrow_forwardAbsorption Refrigerationarrow_forwardWhat are the three components that have to operate when a residential air conditioning system is in cooling mode?arrow_forward
- Which of the following components are common to most automatic control systems for residential split air conditioners? a. Thermostat, contactor, transformer b. Thermostat, magnetic starter, contactor c. Thermostat, diode, contactor d. Thermostat, time-delay relay, contactorarrow_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_forwardWhat is the purpose of a heat sink?arrow_forward
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