[Equest-users] Fan Powered Terminal vs Std VAV Terminal

[Bishop, Bill]

Hi Morteza,
I looked at your model and nothing jumps out as far as obvious problems. I can’t tell if you’ve modeled anything incorrectly without reviewing the design (which I’m not volunteering to do).
My question back to you is – what is it about the proposed design that should save energy compared to the baseline?
Regards,
~Bill

William Bishop, PE, BEMP, BEAP, CEM, LEED AP
Senior Energy Engineer

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From: Equest-users <equest-users-bounces at lists.onebuilding.org> On Behalf Of Morteza Kasmai via Equest-users
Sent: Tuesday, July 9, 2019 5:07 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Fan Powered Terminal vs Std VAV Terminal

Dear eQUEST experts,
This is a LEED v4 C&S project modeled with eQUEST 3.65 build 7175 DOE 2.3.
System Type for the Baseline Case is System 5 – Packaged VAV with HW boiler and for the Proposed Model is Gas fired RTUs with Digital Series Fan Powered Terminal (DTQS).
Comparing the annual energy costs of the two models, when I change terminal type of the propose design system to Series PIU the energy costs of the model increases by 12%, which indicates the baseline system is more efficient the design system. Is this correct or there is something wrong with the terminal type selection? INP and PD2 files of the model are attached.

Thank you for your help.
Morteza

Morteza Kasmaei
Senior Architect
LEED AP BD+C, GGP






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