REVIEW QUESTIONS

Question 1

Name three reasons why ice melts in an icebox

Answer 1

????

Question 2

What is the approximate temperature for low temperature

Answer 2

0 to -10 f

Question 3

What is the approximate temperature for medium temperature

Answer 3

35 to 45 f

Question 4

What is the approximate temperature for high temperature

Answer 4

45f and up

Question 5

One ton of refrigeration is

Answer 5

12,000 Btu/h

Question 6

Describe briefly the basic refrigeration cycle

Answer 6

????

Question 7

What is the relationship between pressure and the boiling point of liquids

Answer 7

Temperature/pressure

Question 8

What is the function of the evaporator in a refrigeration or air conditioning system

Answer 8

Absorbs heat into the system

Question 9

What does the compressor do in the refrigeration system?

Answer 9

It pumps heat through the system in the form of heat-laden refrigerant

Question 10

Define a superheated vapor

Answer 10

??

Question 11

Define the term subcooled liquid

Answer 11

??

Question 12

What is meant by a saturated liquid and vapor

Answer 12

??

Question 13

What is meant by desuperheating a vapor

Answer 13

Uy??

Question 14

What happens to the refrigerant in the condenser

Answer 14

??

Question 15

What happens to refrigerant heat in the condenser

Answer 15

??

Question 16

The metering device?

Answer 16

??

Question 17

What is adiabatic expansion

Answer 17

?

Question 18

Describe flash gas, and tell how it affects system capacity

Answer 18

,??

Question 19

Quality means _______ when referring to a refrigerant

Answer 19

??

Question 20

Describe the difference between a reciprocating compressor and a rotary compressor

Answer 20

???

Question 21

cylinder color code for R-12

Answer 21

White

Question 22

cylinder color code for R-22

Answer 22

Green

Question 23

cylinder color code for R-502

Answer 23

Orchid

Question 24

cylinder color code for R-134a

Answer 24

Light blue

Question 25

cylinder color code for R-11

Answer 25

Orange

Question 26

cylinder color code for R-401A

Answer 26

Coral red

Question 27

cylinder color code for R-402B

Answer 27

Green brown

Question 28

cylinder color code for R-410A

Answer 28

Rose

Question 29

cylinder color code for R-404A

Answer 29

Orange

Question 30

cylinder color code for R-407C

Answer 30

Chocolate

Question 31

Define enthalpy

Answer 31

??

Question 32

Define net refrigeration effect as it applies to the refrigeration cycle

Answer 32

??

Question 33

Define flash gas

Answer 33

??

Question 34

Define temperature glide

Answer 34

??

Question 35

Define a zeotropic refrigerant blend

Answer 35

??

Question 36

Define a near-azeotropic refrigerant blend

Answer 36

??