[Greenbuilding] Dessicants - was Central vs window AC

[John Straube]

Attached is a cut sheet for the only wheel based system we could find when we looked 2 years ago.
it uses hotwater to regen the dessicant.  Takes about 1 gallon per hour at 120F to remove 60 pints per day (a tight house with ERV will generally need less than half this amount of dehumid.
This would require a pretty decent solar hotwater system to drive it.

The amount of tray area and rotation would seem like a crazy quantity given how much commercial systems (eg those actually built tested and used in the world) need to move from wet streams to cold streams.


On 12-06-11 5:55 AM, Ron Cascio wrote:
> No experience with this myself, but I've always thought this an
> interesting way to deal with human comfort in hot/humid climates.
> I've seen commercial dessicant wheels, but not ones made for
> residential purposes. The key (enviro wise) is how you dewater the
> wheel. Waste heat would seem a likely source. Ron
>
> ----- Original Message ----- *From:* Gennaro Brooks-Church - Eco
> Brooklyn <mailto:info at ecobrooklyn.com> *To:* Green Building
> <mailto:greenbuilding at lists.bioenergylists.org> *Sent:* Sunday, June
> 10, 2012 6:46 PM *Subject:* [Greenbuilding] Dessicants - was Central
> vs window AC
>
> Has anyone experimented with the powder desiccants on rotation? Say
> have two trays and when one is in the house getting wet the other is
> outside on a south wall protected from the rain drying out. Would you
> need too much of it to make it effective, and thus render it
> impractical?
>
>
> Gennaro Brooks-Church Director, Eco Brooklyn Inc. Cell: 1 347 244
> 3016 USA www.EcoBrooklyn.com <http://www.EcoBrooklyn.com> 22 2nd St;
> Brooklyn, NY 11231
>
>
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--
>
Prof. John Straube, Ph.D., P.Eng.
Faculty of Engineering
Dept of Civil Engineering / School of Architecture

www.buildingscience.com
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