HTE-100 Heat Transfer Basics & HTE-110
Heat Exchanger Basics UPDATED ACTUAL
Exam Questions and CORRECT Answers
Define Temperature - CORRECT ANSWER - Measure of thermal energy of a substance
Define Heat - CORRECT ANSWER - Transfer of energy from one object to another as a
result of temperature difference between 2 object.
Heat energy flows from... Cold to Hot? Or Hot to Cold? - CORRECT ANSWER - Hot to
Cold
British Thermal Unit (BTU) - CORRECT ANSWER - The amount of heat required to raise
the temperature of one pound of water by one degree Fahrenheit @ sea level
Calorie - CORRECT ANSWER - Amount of energy needed to raise temperature 1 gram of
water 1 degree C
Sensible Heat - CORRECT ANSWER - Heat you can feel; no change in phase
Latent Heat - CORRECT ANSWER - Heat you cannot feel temperature change. Amount
of energy released or absorbed to change the phase of a substance
Latent Heat of Vaporization - CORRECT ANSWER - The amount of energy required to
change a unit mass of a substance from liquid to gas
latent heat of condensation - CORRECT ANSWER - Amount of energy required to change
a substance from gas to liquid
, Latent Heat of Fusion - CORRECT ANSWER - The amount of energy required to change
a unit mass of a substance from solid to liquid
Conduction - CORRECT ANSWER - Transfer of heat by direct contact & energy tranfer
between atoms or molecules of a substance
Convection - CORRECT ANSWER - Transfer of heat by movement of a liquid or gas
Radiation - CORRECT ANSWER - Tranfer of heat energy by waves
Which heat transfer type best describes the transfer of heat from a flowing hot liquid to the inner
surface of the tubes of a heat exchanger? - CORRECT ANSWER - Convection
Which heat transfer best describes the transfer of heat from fired heater burners to the air flowing
through the heater? - CORRECT ANSWER - Radiation
Which heat transfer type best describes the transfer of heat from the inside of a heat exchanger
tube to the outside of the heat exchanger tube? - CORRECT ANSWER - Conduction
Temperature Differential - CORRECT ANSWER - Difference in temperature between 2
objects or substances between 2 points in a process.
Direct Heat Transfer - CORRECT ANSWER - Transfer of heat from one fluid to another
by contact or mixing.
Indirect Heat Transfer - CORRECT ANSWER - Transfer of heat from one fluid to another
through a barrier. (no mixing)
7 Factors that can affect heat transfer - CORRECT ANSWER - -Differential Temperature
-Surface Area
Heat Exchanger Basics UPDATED ACTUAL
Exam Questions and CORRECT Answers
Define Temperature - CORRECT ANSWER - Measure of thermal energy of a substance
Define Heat - CORRECT ANSWER - Transfer of energy from one object to another as a
result of temperature difference between 2 object.
Heat energy flows from... Cold to Hot? Or Hot to Cold? - CORRECT ANSWER - Hot to
Cold
British Thermal Unit (BTU) - CORRECT ANSWER - The amount of heat required to raise
the temperature of one pound of water by one degree Fahrenheit @ sea level
Calorie - CORRECT ANSWER - Amount of energy needed to raise temperature 1 gram of
water 1 degree C
Sensible Heat - CORRECT ANSWER - Heat you can feel; no change in phase
Latent Heat - CORRECT ANSWER - Heat you cannot feel temperature change. Amount
of energy released or absorbed to change the phase of a substance
Latent Heat of Vaporization - CORRECT ANSWER - The amount of energy required to
change a unit mass of a substance from liquid to gas
latent heat of condensation - CORRECT ANSWER - Amount of energy required to change
a substance from gas to liquid
, Latent Heat of Fusion - CORRECT ANSWER - The amount of energy required to change
a unit mass of a substance from solid to liquid
Conduction - CORRECT ANSWER - Transfer of heat by direct contact & energy tranfer
between atoms or molecules of a substance
Convection - CORRECT ANSWER - Transfer of heat by movement of a liquid or gas
Radiation - CORRECT ANSWER - Tranfer of heat energy by waves
Which heat transfer type best describes the transfer of heat from a flowing hot liquid to the inner
surface of the tubes of a heat exchanger? - CORRECT ANSWER - Convection
Which heat transfer best describes the transfer of heat from fired heater burners to the air flowing
through the heater? - CORRECT ANSWER - Radiation
Which heat transfer type best describes the transfer of heat from the inside of a heat exchanger
tube to the outside of the heat exchanger tube? - CORRECT ANSWER - Conduction
Temperature Differential - CORRECT ANSWER - Difference in temperature between 2
objects or substances between 2 points in a process.
Direct Heat Transfer - CORRECT ANSWER - Transfer of heat from one fluid to another
by contact or mixing.
Indirect Heat Transfer - CORRECT ANSWER - Transfer of heat from one fluid to another
through a barrier. (no mixing)
7 Factors that can affect heat transfer - CORRECT ANSWER - -Differential Temperature
-Surface Area
