# Formula for determining the heat dissipation of a radiator

Are there any equasions out there which can calculate the heat dissipation of a water-cooled radiator with a fan on it? I would assume some of the variables would include:
-Volume of the radiator (240 x 199 x 45mm)=2149200mm^3
-Specific heat of water (4.187 kJ/kgK)
-Specific heat of the copper radiator fins (0.385 kJ/kgK)
-ΔT between the temperature of the coolant (variable we are solving for), and the ambient air temperature (lets assume 20 degrees C)
-Rate at which air moves over the radiator fins (3.115 cubic meters/minute)
-Rate at which water moves through the fins (3.785 Liters/minute)
-Energy being dumped into the system (500 watt heat source)

Ultimately what I want to accomplish, is find out if said radiator can adequately radiate 500W of heat (ΔT of less than 40 degrees C) in an ideal environment. Is there some equasion into which I can plug these variables? Did I leave anything out?

Simon Bridge
Homework Helper
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