seriously good link Les
the metric units I'm using are:
Pa for air pressure, m³/min for air volume
mH2O for pump related (liquid) pressures, lpm for flow rate
for the dissipation 'constant',
how about: W/cm²/m³
but note that this will be a very small # (the air unit is 'too' big)
think you need to get into 3D graphs
air flow and backpressure,
coolant flow and head loss;
for a given rad type - will then yield the dissipation
-> at the 'design' air/coolant temp differential of course
there is nothing that cannot be made more complex
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