Hey,
how can i calculate the rotation speed of a condenser fan?

My problem is I have to simulate an Condenser. For the Input I have the Inputtemperature of the coolant and air the massflow of the coolant and the pressure of the coolant and air (ambient pressure) also the heat transfer coeffizient is set by myself, also known. For the output I want to have the Temperature of the coolant.

I know the rotation speed depends on the pressure. And I also know, that the fan blows only so much how to condense the refrigerant is used. But this power doesn't depend on the pressure or? I mean, it is Q=m°*dH (Q=heat flow, m°= massflow of the coolant, dH=condensatoin enthalpy). And at the beginning the coolant is overheated. So, if the fan only blows the condense energy, the coolant at the output of the condenser is steam and liquid.

I hope you can understand my problem.
mfg
Chandler.