SkillCat EPA 608 universal Exam Study Guide
What is the function of the metering device?
(Ans- To decrease pressure
When refrigerant enters the condenser what state is the refrigerant in?
(Ans- High pressure vapor
When refrigerant enters the metering device what state is the
refrigerant in?
(Ans- High pressure liquid
When refrigerant exits the metering device what state is the refrigerant
in?
(Ans- Low pressure liquid
When the refrigerant enters the compressor what state is it in?
(Ans- Super heated vapor
When refrigerant enters the evaporator what state is it in?
(Ans- Liquid
,When refrigerant exits the evaporator what state is it in?
(Ans- Low pressure Vapor
Which components are on the high pressure side?
(Ans- Compressor, condenser
What components change the refrigerants pressure?
(Ans- Compressor, metering device
What state has the highest temperature solid liquid water vapor?
(Ans- Vapor
True or false molecules in a vapor state is faster than a liquid state?
(Ans- True
If we decrease the pressure of a substance it's boiling point decreases.
(Ans- True
In the condenser the refrigerant changes state (Ans- True
,True or false?
The boiling point for most refrigerants is 212fheight.
(Ans- False
True or false The vapor leaving the compressor is lower in pressure than
vapor entering the compressor?
(Ans- False
Your air conditioning works by adding cold air into your house?
(Ans- False
What is fractionation?
(Ans- When refrigerant settles into layers happens in vapor phase
Temperature glide is?
(Ans- The difference between the bubble and dew point
The bubble point is?
(Ans- The temperature that the first refrigerant in a blend turns into
vapor
, The dew point is?
(Ans- The temperature that the first refrigerant in a blend turns to liquid
What is ternary blend?
(Ans- Three refrigerants blended together
Which of the following is considered retrofitting?
(Ans- Modifying components of the system to use a new refrigerant
Why should you never mix your own refrigerants?
(Ans- It's illegal, it can cause equipment failure, mix has unpredictable
temperature
True or false If a refrigerant has a drop in replacement then no retrofit is
needed?
(Ans- True
true or false In a zeotropic blend all refrigerants have the same boiling
point?
(Ans- False
True or false R407c is an azeotropic blend?
What is the function of the metering device?
(Ans- To decrease pressure
When refrigerant enters the condenser what state is the refrigerant in?
(Ans- High pressure vapor
When refrigerant enters the metering device what state is the
refrigerant in?
(Ans- High pressure liquid
When refrigerant exits the metering device what state is the refrigerant
in?
(Ans- Low pressure liquid
When the refrigerant enters the compressor what state is it in?
(Ans- Super heated vapor
When refrigerant enters the evaporator what state is it in?
(Ans- Liquid
,When refrigerant exits the evaporator what state is it in?
(Ans- Low pressure Vapor
Which components are on the high pressure side?
(Ans- Compressor, condenser
What components change the refrigerants pressure?
(Ans- Compressor, metering device
What state has the highest temperature solid liquid water vapor?
(Ans- Vapor
True or false molecules in a vapor state is faster than a liquid state?
(Ans- True
If we decrease the pressure of a substance it's boiling point decreases.
(Ans- True
In the condenser the refrigerant changes state (Ans- True
,True or false?
The boiling point for most refrigerants is 212fheight.
(Ans- False
True or false The vapor leaving the compressor is lower in pressure than
vapor entering the compressor?
(Ans- False
Your air conditioning works by adding cold air into your house?
(Ans- False
What is fractionation?
(Ans- When refrigerant settles into layers happens in vapor phase
Temperature glide is?
(Ans- The difference between the bubble and dew point
The bubble point is?
(Ans- The temperature that the first refrigerant in a blend turns into
vapor
, The dew point is?
(Ans- The temperature that the first refrigerant in a blend turns to liquid
What is ternary blend?
(Ans- Three refrigerants blended together
Which of the following is considered retrofitting?
(Ans- Modifying components of the system to use a new refrigerant
Why should you never mix your own refrigerants?
(Ans- It's illegal, it can cause equipment failure, mix has unpredictable
temperature
True or false If a refrigerant has a drop in replacement then no retrofit is
needed?
(Ans- True
true or false In a zeotropic blend all refrigerants have the same boiling
point?
(Ans- False
True or false R407c is an azeotropic blend?
