I am replacing condensing and evaporator units for an existing -20°C freezer. It is >20 years old.
We are not changing any of the walls/structure.
Does anyone know what the procedure is to calculate the cooling load for an application like this?
I am designing a Pharma clean room. It requires 40 ACH or 6500 cfm. The only heat gain in the room is basically lights and people.
There is 1650 cfm of exhaust required. It is negative pressure with respect to surrounding spaces so I am gaining approximately 560 cfm
from pressure infiltration...