[Equest-users] eQUEST Calculations

[David Eldridge]

If you mean automatically adjusting the parameters of the model inputs to minimize error against the actual utility data by using a basis such as ASHRAE Guideline 14, then no eQUEST does not have that capability built in.

You wouldn’t be changing the internal calculations – some review of the inputs and outputs should provide insight into what variables are known and which are assumed and may have a reasonable range of values resulting in a better fit to the utility data.

With some on-site data such as what you’d be collecting for energy audits anyway, you can usually get an accurate model to start with, or with few iterations.

There are other code/programs/platforms available that can help optimize, but requires a little more effort up front to either run the programming yourself or using a packaged program to setup the modeling files in a different program and tell the optimization program which variables have which range of values to be allowed.

I hope this helps.

David


David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Tom McGovern via Equest-users
Sent: Friday, May 18, 2018 4:45 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] eQUEST Calculations

Hello,

Have a question regarding the internal calculations performed by eQUEST. Am new to eQUEST and just looking to understand some basics. Trying to figure out if there is some way to modify internal eQUEST calculations so baseline model may be adjusted to fit existing utility bills or if there is no way to modify internal eQUEST calculations and we need various end arounds to fit baseline eQUEST model to fit existing utility bills.

Thanks,

Tom McGovern




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