Ryan dumby questions

Question 1

What are the 4 main components in the vapour compression refrigeration cycle?

Answer 1

Condenser, expansion valve evaporator, compressor

these are in order depending where you start from

Question 2

Low pressure side of refrigerant cycle is:

Answer 2

the low pressure side starts from the outlet of the expansion valve(metering device), through the evaporator, to the inlet of the compressor.

Question 3

High Pressure side of refrigerant cycle is:

Answer 3

the high pressure side starts from the outlet of the compressor, through the condenser, to the inlet of the expansion valve(metering device)

Question 4

Define superheating:

Answer 4

the addition of heat to a vapour, which elevates the temperature higher than the boiling point.

(Evaporator)

Question 5

Define desuperheating:

Answer 5

the removal of heat from a superheated vapour

(condenser)

Question 6

Define sub cooling;

Answer 6

the removal of heat from a saturated liquid

(metering device/condenser)

Question 7

What happens to the refrigerant as it passes through the expansion valve?

Answer 7

Pressure decrease; temperature decrease.

Question 8

In which component is the refrigerant de-superheated, condensed, and sub-cooled?

Answer 8

Condenser

Question 9

What is the purpose of the compressor in a refrigeration cycle?

Answer 9

Create low pressure in evaporator/ high pressure in the condenser

Question 10

Why must the pressure be raised before sending the refrigerant to the condenser?

Answer 10

To raise the condensing temperature so gas can become a liquid

Question 11

What is the purpose of a centrifugal chiller?

Answer 11

to supply chilled water to a cool building

Question 12

What type of condenser uses air flow and water evaporation?

Answer 12

Evaporative Condenser

kinda like a cooling tower

why do they do this to us?!?!