Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 54, Problem 1MC
On which of the following laws of nature is the air conditioning system based?
- Heat flow
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The process of air conditioning and refrigeration with illustrations
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Please choose one type of refrigerant in air conditioning system market and elaborate
Chapter 54 Solutions
Automotive Technology
Ch. 54 - What is the amount of heat necessary to change the...Ch. 54 - Explain how an electromagnetic compressor clutch...Ch. 54 - Describe four ways in which the heater control...Ch. 54 - What is the purpose of the compressor clutch...Ch. 54 - What does change of state mean? And why is it...Ch. 54 - What state is the refrigerant in when it leaves...Ch. 54 - What causes condensed water to leak from the air...Ch. 54 - Explain why a diode may be wired into the compres...Ch. 54 - On which of the following laws of nature is the...Ch. 54 - Which of the following statements is true?...
Ch. 54 - Which of the following statements is false? The...Ch. 54 - Which of the following statements about PTC...Ch. 54 - Which of the following is electrically connected...Ch. 54 - Which of the following oils is used in an original...Ch. 54 - A heating system includes all of the following...Ch. 54 - Technician A says that a great amount of heat is...Ch. 54 - Technician A says that suction lines become very...Ch. 54 - While discussing the reasons the use of R-134a is...Ch. 54 - While discussing the reaction by a refrigerant to...Ch. 54 - While discussing solar sensors: Technician A says...Ch. 54 - While discussing the future use of CO2 as a...Ch. 54 - Technician A says that when the A7C system is off,...Ch. 54 - Technician A says that when the refrigerant is...Ch. 54 - A heater does not supply enough heat and the...Ch. 54 - While discussing relative humidity: Technician A...
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- True or False: All heat pumps are practical anywhere in the United States. Explain your answer.arrow_forwardA water-cooling tower capacity is governed by what aspect of the ambient air? A. Dry-bulb temperature B. Wet-bulb temperature C. Enthalpy of the air D. Altitudearrow_forwardBOOK - Heating Ventilating and Air-Conditioning Analysis and Designarrow_forward
- Which of the following is NOT utilized in a refrigerator to reduce pressure of the refrigerant? Automatic throttling valve Capillary tube Thermostatic expansion valve Partial pressures with other gases Ionic expansion valuearrow_forwardWhat is the total length of this furnace and air-conditioning system?arrow_forwardISOTHERMAL PROCESS / ADIABATIC PROCESSarrow_forward
- Why are the air conditioning units usually placed above head level?arrow_forwardChoose the wrong statement Condenser, cooling tower, thermal wheels are heat exchangers Coefficient of volume expansivity is an important property for internal forced convection problems Nusselt number compares convective and conductive heat transfer All of the above Radiation heat transfer is an electromagnetic wave O None of the abovearrow_forwardIn the induced draft cooling tower, the fan forces the air through the tower. True Falsearrow_forward
- What are the three components that have to operate when a residential air conditioning system is in cooling mode?arrow_forwardHelp provide a mathematical model of each of the air conditioning components of the system and the key equations describing their performance. -Precooler -Primary Heat Exchanger -Flow Control Valve -Compressorarrow_forwardWhich 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_forward
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