[Greenbuilding] [BULK] Re: What R-2000 is not...

[Lawrence Lile]

If I am not mistaken, lighting energy was not included in the 36KW figure.  I remember your earlier analysis of the Honeywell Damper motor, good idea.  
 
--Lawrence

________________________________

From: greenbuilding-bounces at listserv.repp.org on behalf of Nick Pine
Sent: Tue 4/17/2007 6:27 AM
To: greenbuilding at listserv.repp.org
Subject: [BULK] Re: [Greenbuilding] What R-2000 is not...



Lawrence writes:

> 36kw per year / 365 = about 99 watt-hours per day, or about enough power
> to run a muffin fan
>
> http://www.blowerwheel.com/fans-cooling-electronics-framed-square.htm
>
> for a few hours, definitely not enough to achieve minimum ASHRAE
> recommended ventilation levels with the windows closed.

Given a height difference and an indoor-outdoor temperature difference
(which might come from stored solar heat if indoor and outdoor temps
are exactly the same), we might ventilate with a foamboard damper with
Honeywell's $50 6161B1000 damper motor, which uses 2 watts when
it is moving and 0 watts when it is not moving.

With an 8' height difference and a 1 ft^2 damper, we can move 15 cfm
with a (15/16.6)^2/8 = 0.1 F temp diff, with about 1.5 Btu/h (0.5 watts)
of heat power.

But most houses naturally leak a lot more air than that. How many meet
the Canadian IDEAS standard?

And what do we do about light at night? Gas lamps? Do we count
fossil fuels in this game?

Nick   

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