info
Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Groups keyboard shortcuts have been updated
Dismiss
See shortcuts
air conditioning and global warming
0 views
Skip to first unread message
Dimitris Tzortzakakis
Aug 2, 2023, 6:29:03 AM8/2/23
to
as everyone knows, it's pleasant to sit in an air conditioned room in
all this heat. but a/cs do come with a penalty. according to the second
law of thermodynamics, as much heat as they extract from the air
conditioned room, the same heat they excrete to the environment, plus
the heat emitted from the compressor, and of course all the chain losses
the electricity needs to go from the generator to your plug. and as with
each heat wave more and more a/cs are added, adding their thermal loads
to the environment, each heat wave is worse than the previous one.
according to an article I read in www.lefigaro.fr , in french of course.
and as quaint as it might sound, a fan consumes 20 to 40 times less
electricity than an a/c!
all this heat. but a/cs do come with a penalty. according to the second
law of thermodynamics, as much heat as they extract from the air
conditioned room, the same heat they excrete to the environment, plus
the heat emitted from the compressor, and of course all the chain losses
the electricity needs to go from the generator to your plug. and as with
each heat wave more and more a/cs are added, adding their thermal loads
to the environment, each heat wave is worse than the previous one.
according to an article I read in www.lefigaro.fr , in french of course.
and as quaint as it might sound, a fan consumes 20 to 40 times less
electricity than an a/c!
gfre...@aol.com
Aug 4, 2023, 2:30:33 AM8/4/23
to
air (30c) on you at 85% RH is not that refreshing and it is typically
hotter inside than outside unless you also have a big fan ventilating
the attic. I have 2 24" exhaust fans and running them is not as much
cheaper as you would expect. (1/4 HP each on high, 1/8th on low)
0 new messages