Vocab 3

Question 1

Subcool

Answer 1

The heat removed from the refrigerant beneath its condensing point.

Question 2

Dry Nitrogen

Answer 2

Inert gas used for leak checking and brazing to prevent oxidation.

Question 3

CFM (cubic feet per minute)

Answer 3

The volume of air being moved by the blower at a given point.

Question 4

Dry Bulb

Answer 4

the temperature displayed on a thermometer does not include or factor in humidity

Question 5

Wet Bulb

Answer 5

The measurement combining temperature and humidity, measured with a psychrometer.

Question 6

Static Pressure

Answer 6

The amount of pressure exerted inside of the ductwork from the blower.

Question 7

Accumulator

Answer 7

Stores any liquid refrigerant past the evaporator to prevent liquid floodback to the compressor.

Question 8

R-22

Answer 8

is an HCFC refrigerant, commonly used in refrigeration from 1950 to 2010’s.

Question 9

R-410a

Answer 9

is an HFC refrigerant, commonly used in refrigeration from mid-90’s-2023’s.

Question 10

Blended Refrigerant

Answer 10

a refrigerant comprising 2 or more refrigerants. Azeotropic: blend of refrigerant of SIMILAR boiling points. Zeotropic: blend of refrigerants of DIFFERENT boiling points.