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jlrii · 08-20-2004, 06:23 PM

This has been bugging me for a while as I am doing the same sort of thing (low velocity) with a completely different setup tho'. Is there a boundry layer involved when dealing with air throug a rad? From working in HVAC for quite some time I know there is an air film to deal with when doing load calcs for buildings. I haven't found any info at all on how air movement effects it in a case like this. Since the atmospheres "viscosity" is so low, does that negate the effect with even slight air movement over a rad? Air impingement if you will.

Edit: From what I've read in rad literature the creating "waves" in the fin surfaces is done to increase efficiency, Is this just for increased surface area or to create turbulance?

08-20-2004, 06:23 PM	#92
jlrii Cooling Savant Join Date: Feb 2004 Location: Massachusetts, USA Posts: 158	This has been bugging me for a while as I am doing the same sort of thing (low velocity) with a completely different setup tho'. Is there a boundry layer involved when dealing with air throug a rad? From working in HVAC for quite some time I know there is an air film to deal with when doing load calcs for buildings. I haven't found any info at all on how air movement effects it in a case like this. Since the atmospheres "viscosity" is so low, does that negate the effect with even slight air movement over a rad? Air impingement if you will. Edit: From what I've read in rad literature the creating "waves" in the fin surfaces is done to increase efficiency, Is this just for increased surface area or to create turbulance? Last edited by jlrii; 08-20-2004 at 06:34 PM.