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Vapor pressure table for R134a refrigerant gas > < Heat is always transferred from a warmer material to a cooler one.

Polo Mk4

Pressure and boiling point
Pressure and boiling point
The boiling point of any liquid in the table of boiling points is always determined for an atmospheric pressure of 1 (one) bar. If the pressure applied on a liquid changes, its boiling point also changes.
We know, for example, that at lower pressures water boils at a proportionally lower temperature.
By analyzing the characteristic pressure curves of water vapor and R134a refrigerant gas, we find, for example, that vapor turns to liquid at constant pressure when the temperature decreases (in the condenser), and refrigerant gas in liquid state turns to gas when the pressure decreases (evaporator).
   
Characteristic water vapor pressure curve:
A - Liquid
B - Gaseous
C - Characteristic water vapor pressure curve
1 - Pressure applied on a liquid, in bar (absolute pressure)
2 - Temperature in °C
  n87-0523
Characteristic vapor pressure curve of R134a refrigerant gas:
A - Liquid
B - Gaseous
D - Characteristic vapor pressure curve of R134a refrigerant gas
1 - Pressure applied on a liquid, in bar (absolute pressure)
2 - Temperature in °C
  n87-0530

Vapor pressure table for R134a refrigerant gas > < Heat is always transferred from a warmer material to a cooler one.