Quote:
Originally Posted by Christ
Look up. No, seriously. Look up. Heat rises, right?
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Actually, heat does not rise, it travels in all directions.
Heated air rises. And you are correct that the air will stratify at the ceiling where it is least needed for comfort. Also the stratified heat at the ceiling makes for greater roof losses due to larger 'delta T'.
If we mis-conceptualize and think that heat rises we will overlook the substantial heat losses that occur downwards via conduction, from water heaters having no bottom insulation, from floors having insufficient insulation, basements, crawl spaces and foundations, all major leakers.
Respectfully,
-AC_Hacker