Dear Friends,

Which sentences below about sub-cooling are true ?

1 – At condenser with receiver tank we have not sub-cooling because we have mixture of "liquid + gas" at saturation area inside of receiver tank.

2 – At condenser with receiver tank we have sub-cooling but we can't increase sub-cooling

3 – At condenser without receiver tanks by increasing refrigerant we can increase sub-cooling (I saw this sentence at SWEP book)

Which sentence is correct ?

Sincerely yours.