Unit 21 Flashcards (QUIZ) (CRF)-Mr. Graham

Quiz
•
Instructional Technology
•
University
•
Easy
Randall Graham
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
The boiling temperature of the liquid can be controlled by controlling the pressure. The standard boiling pressure for water is and atmospheric pressure of 29.92 in. Hg (mercury) where water boils at 212° F.
Boiling Temperature
Film Factor
Saturated Vapor
Starved Coil
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
The Relationship between the medium giving up heat and the heat exchange surface (evaporator). This relates to the velocity of the medium passing over the evaporator. When the velocity is too slow, the film between the air and the evaporator becomes greater and becomes an insulator, which slows the heat exchanger.
Bearing Washout
Film Factor
Wet Compression
Starved Coil
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
An evaporator that has stamped refrigerant passages in sheet steel or aluminum.
Film Factor
Flooded Evaporators
Starved Coil
Stamped Evaporator
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
The condition in the evaporator when the metering device is not feeding enough refrigerant to the evaporator.
Flooded Evaporators
Finned Tube Evaporator
Starved Coil
Bearing Washout
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
A refrigerant system operated with the liquid refrigerant level very close to the outlet of the evaporator coil for improved heat exchange.
Subcooling
Flooded Evaporators
Superheat
Finned Tubed Evaporator
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
The refrigerant when all of the liquid has just changed to a vapor.
7.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
A copper or aluminum tube that has fins, usually made of aluminum, pressed onto the copper lines to extend the surface area of the tubes.
Finned tube evaporator
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