Temperature

Question 1

What are the figures for absolute zero, freezing and boiling point of water in Celsius?

Answer 1

Absolute zero = -273

Freezing point = 0 (ISA conditions)

Boiling point = 0 (ISA conditions)

Question 2

How do you convert between Celsius and kelvin?

Answer 2

c -> k = + 273

Question 3

What is the freezing and boiling point of water in Fahrenheit?

Answer 3

Freezing = 32F

Boiling = 212F

Question 4

How do you convert Celsius to Fahrenheit?

Answer 4

X 1.8 then + 32

Question 5

What is OAT, SAT and TAT?

Answer 5

OAT = outside air temp measured at a point NOT in sunlight

SAT = static air temp, the inferred temperature outside an a/c for air NOT affected by movement

TAT = total air temp, sensed temperature outside an a/c affected by adiabatic heating as the air relative to the a/c is slowed to zero

Question 6

What is ram rise?

Answer 6

The difference between SAT and TAT caused by adiabatic heating

SAT = TAT + ram rise