[Equest-users] Pool Dehumidification Unit - heat recovery

[Carol Gardner]

Yikes, Heath! I hope there is someone who can assist you. It is so not me.
But my heart goes out to you.

Wishing you success!

Carol

On Thu, May 13, 2010 at 12:03 PM, Heath Baxa <Heath.Baxa at me-engineers.com>wrote:

>  I’m modeling a packaged DX pool dehumidification unit with a pool water
> condenser.  Project is a recreational natatorium in Dallas.
>
>
>
> During dehumidification, hot gas is directed:
>
> 1st to space heating loads via unit mounted reheat coil
>
> 2nd to pool heating via unit mounted pool water condenser
>
> 3rd external condenser
>
>
>
> Since this is a LEED project we have to meet ASHRAE 90.1-2007 Mandatory
> Provisions.  Section 7.4.5.2 requires a pool cover.  The following exception
> could apply:
>
> * “Pools that receive over 60% of their energy (computed over an annual
> operating season) from either heat recovery or site-solar energy do not need
> covers.  Heat recovered from a pool dehumidification system can be used to
> meet this requirement.”*
>
>
>
> I’m finding that the dehumidification unit reduces the pool heating energy
> use by approximately 14% annually.  Has anyone done a similar calculation to
> document compliance with this exception?  Right now I’d just like a rough
> engineering check.
>
>
>
> *Heath Baxa, P.E., LEED AP*
>
>
>
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-- 
Carol Gardner PE
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