[TriLUG] OT: thermodynamics of A/C question

[Joseph Mack NA3T]

On Fri, 22 Jun 2012, Steve Litt wrote:

> If your house is anything like my house, then in the absence of air
> conditioning or open windows, every hour it goes about half way toward
> the external temperature. By 2PM it's basically as hot as the (90+, I
> live in Orlando) external temperature. I don't think your house is
> going to function as a heat sink long enough to have your morning
> running start carry through til 6pm. Unless of course you're a lot more
> insulated than my house.

I haven't characterised my house this well. I have some 
shade in the afternoon and I didn't need to turn on the A/C 
till about 5pm, when the outside temp was 90.

> If you have lots of computers,

they're all upstairs and I'm spending the day downstairs 
this summer.

Compared to the wattage of the sun, computers aren't that 
big a problem

> I don't know if your area is humid or dry, but if it's dry 
> you can always get an evaporative cooler. I saw one of 
> those used with great effect in California's San Fernando 
> Valley, where it's dry.

I'm in Durham. It's humid

Joe

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Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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