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JRR wrote;<br>
<br>
I have had an energy efficient house since January 1987.<br>
It is basically a LEED Silver building with 2x6 studs, 1" Expanded
Polystyrene sheathing, fiberglass<br>
insulation, and a 6 mil Polyethylene vapor barrier. If I were to
repeat it I would use aluminum foil <br>
backed drywall for the vapor barrier and I would eliminate all
ceiling penetrations on the top floor<br>
for electrical and lighting. I took 20 hours this January and
hunted down vertical air leaks in the attic.<br>
The result was a saving of about 400 kwh per month out of 1800 kwh
annual max in January on this<br>
4500 sq ft home. <br>
<br>
Abdul Murad Zainal Abidin wrote:
<blockquote cite="mid:767678.86098.qm@web24404.mail.ird.yahoo.com"
type="cite">
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<div>Hello,</div>
<div> </div>
<div>I am currently using energyPlus to simulate a single zone
building in hot and humid climate. The latest version of EnergyPlus has
a combined heat and moisture transfer (HAMT) model added. My building
envelope has polyurethane foam as the insulating material (wall),
polyethylene sheet as vapour barrier, cement screed and damp-proof
barrier for floor construction. The hygrothermal properties for the
said materials in existing publication only have permeance and
permeability. However, those properties are not included inside the
HAMT model for the simulation to run effectively.</div>
<div> </div>
<div>I would really appreciate it if someone could assist me in
providing the hygrothermal properties of the said materials, which can
be used in the HAMT model.</div>
<div> </div>
<div>Thank you for reading.</div>
<div> </div>
<div>Yours sincerely,</div>
<div> </div>
<div>Murad</div>
<div>Loughborough University</div>
</div>
<br>
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