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03-03-2011, 07:16   #48
MacEntyre

Join Date: Sep 2007
Location: Jamestown, NC
Hammock: Molly Mac Gear
Posts: 7,693
Quote:
 Originally Posted by BillyBob58 Mac, I might be missing your point. Can you elaborate?
Just sayin' that we need to control heat loss, not eliminate it. It's a balance determined by this equation:

Input - Output + Generation = Accumulation

We seek to control the Input, Output and Generation of heat so that our Accumulation is zero. That way, we remain warm and do not heat up.

Input is external warmth brought in, such as a fire.
Output is heat loss, controlled by insulation.
Generation of heat is from metabolism, primarily controlled by activity, secondarily by eating.

We could eliminate Output from the equation by assuming adiabatic conditions, or perfect insulation that stops all heat loss. Then it would read:

Input + Generation = Accumulation

Let's say that we have no Input from external heat sources, so that term is zero. Then, whatever heat we generate, we accumulate. We cannot lower our metabolism to generate zero heat, or we will be DRT. So, if we constantly generate heat, our temperature will always increase.

Therefore, we cannot utilize an adiabatic insulation system that completely eliminates heat loss. Unless our insulation is inadequate, we must lose heat.

- MacEntyre
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Last edited by MacEntyre; 03-03-2011 at 07:43..