Modern Ref. Chapter 6

Question 1

Refrigerants are fluids that absorb _____ inside the refrigerated space and release the _____ outside

Answer 1

heat

Question 2

high pressure causes the _______ of heat

Answer 2

rejection

Question 3

low pressure causes the ________ of heat

Answer 3

absorption

Question 4

the low side of the system is where heat is ______ and

_______

Answer 4

absorbed and removed

Question 5

The compressor serves as the divider between the ____ side and ____ side of the system

Answer 5

low side and high side

Question 6

High side of the system is where heat is ______ and ______

Answer 6

rejected and removed

Question 7

What is an oil separators function?

Answer 7

Collects oil so too much does not get into the system

Question 8

Condense removes the ______ heat from the refrigeration vapour allowing the vapour to condense back into a liquid

Answer 8

latent heat

Question 9

What is a liquid receiver?

Answer 9

stores liquid refrigerant (usually on larger systems)

Question 10

What us a liquid line?

Answer 10

tubing that carries liquid refrigerant from the condenser or liquid receiver to the metering device.

Question 11

Liquid line filter-drier?

Answer 11

collects moisture, dirt, metal, and other debris to prevent any from entering the metering device

Question 12

What is the metering device function?

Answer 12

Controls the flow of refrigerant into the evaporator

Question 13

Where is the metering device located?

Answer 13

between the liquid line and the evaporator

Question 14

What is the evaporators job?

Answer 14

absorb heat and turn refrigerant into vapour

Question 15

What is an accumulator?

Answer 15

prevents liquid refrigerant from flowing through the suction line and into the compressor

Question 16

What is the suction line?

Answer 16

tubing that carries refrigerant vapour from evaporator to compressor

Question 17

What is the suction line filter-drier?

Answer 17

Same function as the liquid line filter-drier although it is on the low side of the system

Question 18

_________ refrigerant is like a dry sponge that has the ability to soak up a lot of water

Answer 18

low-pressure liquid

Question 19

________ refrigerant is like a soaking wet sponge that cannot absorb more water

Answer 19

low pressure vapour

Question 20

From the metering device through the evaporator to the compressor is the ______ side of the system

Answer 20

low side

Question 21

From the compressor exhaust through the condenser and liquid line to the metering device is the _____ side of the system

Answer 21

high side

Question 22

Using suction, a compressor draws in refrigerant by creating _______ in the evaporator

Answer 22

low pressure

Question 23

using the process of compression, a compressor increases refrigerant _____ and _______

Answer 23

pressure and heat content

Question 24

Commonly used in different HVACR applications, ____ compressors use a back and forth to up and down motion

Answer 24

reciprocating

Question 25

A heat exchange device designed to reject or expel heat is a

Answer 25

condenser

Question 26

A condenser that uses a fan to remove heat more quickly is called a _______ condenser

Answer 26

forced air

Question 27

Heat flow can be best described as flowing from _____ areas to ____ areas

Answer 27

hot areas to cold areas

Question 28

A storage tank for liquid refrigerant on the high side of the system is called a

Answer 28

liquid receiver

Question 29

A refrigeration system with a _____ metering device does not use a liquid receiver? a) Capillary tube b) Low-side float c) automatic expansion valve d) thermostatic expansion valve

Answer 29

a) capillary tube

Question 30

Into which tank can a technician pump a refrigeration systems entire refrigerant charge to perform a service? a) accumulator b) evaporator c) condenser d) liquid receiver

Answer 30

liquid receiver

Question 31

The high pressure line between condenser and metering device is called the _____ line

Answer 31

liquid

Question 32

To protect a system from dirt, moisture, and metal, install a _______

Answer 32

filter-drier

Question 33

A heat exchanged device designed to absorb heat is called a

Answer 33

evaporator

Question 34

The instantaneous evaporation of liquid refrigerant in a evaporator is called ________

Answer 34

flash gas

Question 35

A storage tank that traps liquid refrigerant on the low side of the system is a

Answer 35

accumulator

Question 36

An accumulator will function best with its inlet positioned _____ the tank

Answer 36

at the top of

Question 37

The ______ carries refrigerant from the evaporator to the compressor

Answer 37

suction line