On Thu, 03 Jul 2014 21:28:13 -0700, Jeff Liebermann
Gave us:

On Thu, 03 Jul 2014 18:40:06 -0700, RobertMacy
wrote:

Ceiling exhaust fan !!! when it's 105 outside no way!!! you want me to
suck in outside air at those temps??!!

Let's see at night 81 during day 105, making the average high side of 93,
sounds about right.

I thought it gets kinda cold at night in Az. I've only been there
once. It was quite hot during the day, but we nearly froze sleeping
in the car at night.

Since I painted my house a darker color and take advanatage of 'night time
radiation' the average in our house has dropped substantially. Who would
have thought? dark house = cooler average, light colored house = hotter
average. but true we noticed a difference the moment the house was painted.

In some areas, white rocks and white roofs are required by code to
reduce air conditioning requirements. It's suppose to reflect the
sunlight instead of absorbing it. Now, you're telling me that the
collective wisdom of the local planning department might be wrong? Are
you sure?


Absorption usually means a soaking-in and re-radiation of energy and
thermal mass gets "stored", so it remains after the source dissipates..

Reflection is better, but your building cannot be an "absorber". It
too must also reflect.

I do not think anyone could present a case that differs with these
basic physical precepts.