Evaporating / condensing temperatures

[lana]

Hi there,

On the other hand on hot climate the system should be operated on high HP (TDC = 15 to 20 K) to ensure an efficient performance?

If you design air cooled condenser for hot climate with TDc = 15 to 20K then you will get high pressure cut out.
HOT Climate DB = 43°C
TDc = 15 °C
Then Tc = 58°C means HP = 22.2 bar(g) = 326 Psi(g)for R22 ------means high pressure cut out!!!!!

I attach a file which is a page from Dossat book "Principle Of Refrigeration" 2nd edition pages 333 and 334.
Hope this clarify this issue.

Cheers