On Fri, 3 Aug 2007 09:30:31 +0100, d4g4h4@yahoo.co.uk (David
Horne, _the_ chancellor (*)) wrote:
>Mxsmanic wrote:
>
>> Tim C. writes:
>[]
>> > The fan will always heat the room a little (from the electrical power it
>> > uses).
>>
>> It also heats the air directly, by accelerating it. The air movement
>> eventually (rather quickly) becomes randomized heat energy.
>>
>> > The fact that Mixi is ignoring is that when humans in that room also
>> > cool down, they transfer significantly more heat to the room than the fan
>> > ever will ...
>>
>> They transfer heat to the room in any case. If they cannot, they'll die of
>> hyperthermia fairly quickly.
>
>In heat waves in US cities, the local authorities ensure that the
>elderly etc. in the area have fans. They make a difference.
To be fair, the fans may be used to exhaust the buildup of warm
interior air with cooler air from outside. Even in humid
climates, the common attic fan in the USA helps cool the house by
removing warm air from the interior through an attic opening and
drawing outside air in through open window on lower levels. It
may be pretty hot outside, but it will liely be cooler than
inside.
--
************* DAVE HATUNEN (hatunen@cox.net) *************
* Tucson Arizona, out where the cacti grow *
* My typos & mispellings are intentional copyright traps * |
