wastwater system and head psi

[kool3681]

hey guys/gals...i new to this site but was told u could get good info here

So my question is.. I have a freezer that is on a wastwater system to cool the condser...and im wonder if there is a stander or rule of thumb on calculating the correct HP. the control valve has been messed with and im not sure if its being stavered for water....

[griffic1]

If you have a water cooled condenser then you need to look at inlet and outlet water temps there should be about a 10 degree split.

[bc guy]

hey guys/gals...i new to this site but was told u could get good info here

So my question is.. I have a freezer that is on a wastwater system to cool the condser...and im wonder if there is a stander or rule of thumb on calculating the correct HP. the control valve has been messed with and im not sure if its being stavered for water....

I usually look for 105F sat cond. temp (converted from head pressure for type of refrigerant)

[keviekev70]

If you have a water cooled condenser then you need to look at inlet and outlet water temps there should be about a 10 degree split.

If that condenser is fouled, @10* something would be tripping out.

Also the city water would be around 50*,and as your calculation you would have 60* (10*TD) on the outlet, what would your high side pressure be? And would it be high enough to create the appropriate pressure differential across the metering device with the proper refrigerant charge?

[keviekev70]

I usually look for 105F sat cond. temp (converted from head pressure for type of refrigerant)

Yep, 105* for the proper charge and operations