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----- Original Message -----
From: Ed Anderson <eanderson@carolina.rr.com>
Date: Tuesday, December 9, 2003 12:32 pm
Subject: [FlyRotary] Re: Air Density at altitude
Heat transfer equation Q =W*DeltaT*Cp, with W = mass flow down by 30%. So to get rid of the same Q of heat (and since Cp doesn't change that much) it would appear that means the delta T term would need to increase by 30% for Q quantity to remain the same. But, I don't know exactly how a 79Deg colder incoming air would affect the Delta T term.
BIll??
Ed Anderson
Wouldn't the percentage change in DeltaT (DeltaDeltaT?) have to be measured from absolute 0? An 80degree change would then represent...what?... about 20%?
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