[Greenbuilding] South-facing windows are net energy gains...

[nick pine]

 "Doug Kalmer" <dougkalmer at gmail.com> writes:

> If you choose the right glazing, your windows can gather more energy than 
> they lose

Not true, on cloudy days.

Lawrence Lile <LLile at projsolco.com> writes:

> Greetings from Missouri, where we are treated to a month of clouds in a 
> typical November.

NREL says 720 Btu/ft^2 of sun falls on the ground and 1020 falls on a south 
wall
on an average 46.2 F November day with a 54.7 high in St. Louis.

Corwyn <corwyn at midcoast.com> writes:

> How much energy do you think there is in a say 8,000 cubic feet of air
> at 73? (68? + 5?)?  145 BTUs per ?F.  If you are heating a 65?F bathroom
> with it, you get 1160 BTUs ...

Very mysterious.

Chris Koehn <chris at koehn.com> writes:

> The clients have in place a 12 KW propane generator...

... which might make 36 kW of heat. Will they be using that heat?

Nick