I think it depends on the working fluid of refrigeration system for the compressor. Some refrigerant has higher viscosity than others, which contribute pumping power. Higher heat capacity and thermal conductivity could bring larger amount of heat and faster heat transfer.
The properties and the heat flux also could contribute to two phase heat transfer and pressure drop. It means subcooled and superheat should be considered.
The fan velocity mostly is small, however to obtain high flowrate the size should be big enough.
I suggest you read the boiling and condensation chapter in Book "process heat transfer: principles and applications by Serth
Teguh is right, sizing of components depends on many factors. While you might simply use components that are readily available for a single system. If you intend to build many systems, design optimization is highly desirable. More detailed and comprehensive optimization will reap benefits as a design sees increased usage.
If everything is defined in the hydraulic part, then the heat flow, fluid flow are known. Your question is about how to choose a fan and how to control it? Further, your problem is solved by determining the parameters of the joint operation of the fan, as an air pump and heat exchanger, as air resistance. That is, by combining the graphs of the pressure characteristic of the air pump and the resistance at the intersection point, you will get a solution in the form of pressure in and flow (volume or mass). At the same flow rate, according to the graph of the dependence of power on flow, we find the corresponding value of the power required to drive the fan (see below Bild1.jpg).
Having a dimensionless characteristic of the fan, you can change its speed and look for the optimal solution, both in terms of flow and power per drive. At the same time, do not forget about the surge.
Recommend free software Multi Wing Optimizer (if use Multi Wing fan).
If you need to understand more deeply and build the pressure characteristic of the fan yourself, then I can recommend using GOST 10616, annex A (ISO 13351).
The second stage of solving the problem will determine the value of the utilized heat flux.
It is necessary to have a thermal characteristic of the heat exchange.
This is the most difficult, because determined by test results.
The thermal characteristic of a heat exchanger relates the heat transfer coefficient (k) [W/m^2×°K] and the speed of the air passing through the heat exchanger (see below Bild2.jpg).
The graph shows the boundaries determined by the minimum and maximum possible coolant velocities. At a minimum, you can use the criterion Re.
Further, knowing the area (S) of heat exchange in air and the value of the heat flux (Q), we determine the temperature difference according to the equation:
Δt=Q/(k×S)
Analyze the result, if necessary, specify the air density at the appropriate temperature and recalculate. If necessary, solve the problem again with a different fan speed.