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ESCO Air Conditioning Exam Study Guide Solutions

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ESCO Air Conditioning Exam Study Guide Solutions Heat which causes a change in temperature of a substance is called - ANSWER-Sensible heat Heat added to a substance without a rise in temperature - ANSWER-Latent heat Heat added to the refrigerant in a vapor state after the evaporation process is...

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  • November 4, 2024
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ESCO Air Conditioning Exam Study Guide

Solutions


Heat which causes a change in temperature of a substance is called - ANSWER✔✔-Sensible heat


Heat added to a substance without a rise in temperature - ANSWER✔✔-Latent heat


Heat added to the refrigerant in a vapor state after the evaporation process is called - ANSWER✔✔-

Superheat


Scroll compressor move refrigerant by - ANSWER✔✔-Involute Spirals


The movement of heat by way of fluid is called - ANSWER✔✔-Convection


The movement of heat by direct contact is - ANSWER✔✔-Conduction


The standard unit for measuring the quantity of heat in a substance is - ANSWER✔✔-BTUs


Refrigerant gives up heat when - ANSWER✔✔-It condenses


Why must refrigerant in the suction line be slightly warmer than the saturation temperature? -

ANSWER✔✔-Prevent liquid slugging of the compressor


The state of the refrigerant in the suction line should be - ANSWER✔✔-Low pressure / Low temperature

vapor


The state of the refrigerant entering the condenser is - ANSWER✔✔-High pressure / Highly superheated

vapor


Copyright ©Stuvia International BV 2010-2024 Page 1/9

, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


The evaporator - ANSWER✔✔-Transfers heat from the refrigerated space to the refrigerant


Which of the following is not a thermodynamic property of refrigerants - ANSWER✔✔-Flammability


The sequential order of steps in the vapor compressions process are - ANSWER✔✔-Compression,

Condensation, Expansion, Vaporization


If a 30 pound cylinder of reclaimed R 410 a refrigerant has been stored overnight at 70° the pressure in

the cylinder should be approximately - ANSWER✔✔-201 psig


Fan airflow pressures are usually measured in - ANSWER✔✔-Inches of water column


0 pounds per square inch absolute is - ANSWER✔✔-A pressure which cannot be further reduced


0 pounds per square inch gauge is - ANSWER✔✔-The same as atmospheric pressure


The temperature at which moisture will start to condense from the air is called - ANSWER✔✔-Dew point

temperature


A compound pressure gauge measures - ANSWER✔✔-Pressure and vacuum


Mechanical shaft seal is necessary on a - ANSWER✔✔-Open drive compressor


Liquid slugging is - ANSWER✔✔-Liquid refrigerant in the compressor clearance space


The clearance space in reciprocating compressor - ANSWER✔✔-Has an effect on compressor capacity


Which of the following types of air conditioning compressor is most energy-efficient - ANSWER✔✔-Scroll


Which of the following represent the right order for the functions of a condenser - ANSWER✔✔-De-

superheat, Condenses, Subcools




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