[Equest-users] pool heating baseline system

[Nick Caton]

Whether or not it's a process load may come down to semantics (I think
you can make a case either way if you reference the 90.1 glossary terms
- see 'process load' and 'process energy'), but I think it's moot in a
broad sense...

 

If there weren't significant savings to be credited, then I'd probably
try to call it a process load and make each model identical.  That would
be the simplest and most time efficient approach.

 

However, if there are major savings using heatpumps relative to
"conventional" heating means, then even if it is a "process load" I
would pursue modeling them differently as an exceptional calculation.  

 

Oh, and 90.1 does define a baseline efficiency (COP) for heat pump pool
heating equipment:  Take a closer look the table in chapter 7.  You
might also review the prescriptive pool requirements for other means to
differentiate the proposed design other than in heating efficiency.  

 

Best of luck! 

 

~Nick

 

 

 

NICK CATON, E.I.T.

PROJECT ENGINEER

Smith & Boucher Engineers

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Pasha
Korber-Gonzalez
Sent: Tuesday, January 25, 2011 4:50 PM
To: Mirza Sajjal
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] pool heating baseline system

 

Isn't the pool heating system considered as a process load for 90.1
since it has no effect on the overall building design?  It would be
exactly the same in the baseline as it is for the proposed case.

 

...just a thought, although I haven't run into this scenario with any of
my sim projects.

 

Pasha


 

On Tue, Jan 25, 2011 at 3:19 PM, Mirza Sajjal <ms2995 at gmail.com> wrote:

Can anyone tell me what the baseline pool heating system should be if
the design calls for heat pumps? Per App. G Table G3.1.11 the
requirement is that the energy source be the same, in this case
electricity. Can we model the baseline as electric water heaters or
should the system type (heat pumps) also remain the same in the baseline
since electric resistance pool heating is unconventional? Theres a huge
energy savings difference between the two baselines and was wondering
how others have modeled this in terms of LEED.

Your opinion and insight is much appreciated.

Thanks in advance for any response.

 

Mirza


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