[Bldg-sim] LEED baseline and swimming pools

[Paul Riemer]

James,
I suggest looking at the exceptions to the baseline system type table in section G3.1.1.  A latent load differential criteria would be a nice but it is not there so here's hoping one of the criteria there gives you a reasonable and manageable comparison.

Paul Riemer
Dunham



From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of James V Dirkes II, PE
Sent: Monday, March 08, 2010 3:36 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] LEED baseline and swimming pools

Dear Bldg-Sim community,

I'm trying to plan a LEED energy model which has a swimming pool and am stuck thinking about how to model the baseline condition.

A pool has such specialized needs that I have doubts whether one of the specified baseline systems in ASHRAE 90.1 can do an acceptable job of controlling temperature and humidity.

At present, I am reasonably confident that I can schedule the pool occupancy properly, add  moisture in amounts that parallel the pool evaporation and specify the pool heater energy.

My facility requires a "System 6" parallel fan powered VAV box HVAC system (95,000 sq.ft., single story, multi-purpose facility).  This is not a system type that makes sense for a pool, so I hesitate to use it at all.  If I have to, for purposes of following 90.1, I think it might meet temperature loads, but it certainly won't meet humidity loads, at least not at the specified 20F airside delta T.  That, of course means that overall energy use will not even be close to what will actually be needed and the baseline will compare poorly with the actual (very efficient) HVAC system.

I'll appreciate any guidance from those among you who have done LEED projects with pools!

Thanks in advance.

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