[Equest-users] Excessive summer heating

[Harmon, Amy]

The building is an existing 10 story dormitory built in the 60's.  It's 100% OA.  The HVAC design consisted of replacing an air handler and replacing 2 pipe FCUs with 4 pipe FCUs.  Architecturally, they replaced all the single pane windows with double pane windows.

Amy Harmon
Mechanical Engineer
Scheeser Buckley Mayfield LLC
1540 Corporate Woods Parkway
Uniontown, OH 44685
Phone: (330) 896-4664 ext. 107
Direct: (330) 526-2707
Fax: (330) 896-9180

From: David Eldridge [mailto:DEldridge at grummanbutkus.com]
Sent: Friday, March 06, 2015 11:35 AM
To: Harmon, Amy; Singhal, Harshul; equest-users at lists.onebuilding.org
Subject: RE: Excessive summer heating

What type of building is it? Reheat would be expected for buildings with higher minimum airflow such as hospitals or laboratories.

The LEED Reviewer's comment might not be justified if the building is designed to use a large amount of reheat energy.

It's also possible that the comment is indirectly saying that the minimum airflow settings in the models are too high, or that the overall supply air volume is too large.

If you can provide backup that that airflow volumes are correct that would help explain heating use in the summer.

David


David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
Associate

Direct: (847) 316-9224 | Mobile: (773) 490-5038

Grumman/Butkus Associates | 820 Davis Street, Suite 300 | Evanston, IL 60201
Energy Efficiency Consultants and Sustainable Design Engineers

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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Harmon, Amy
Sent: Friday, March 06, 2015 10:29 AM
To: Singhal, Harshul; equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] Excessive summer heating

Hi Harshul!
Thanks for the response, it's not the unmet heating hours I'm too concerned about it unless something I did previously has caused the summer excessive heating.
The LEED reviewers commented that report PS-A & PS-B showed an excessive amount of heating during the summer months...in the month of July the heating load of 269 MBTUs of heating roughly 20.9% of the total heating and cooling load (269 MBTU + 1018.7 MBTU).

Amy Harmon
Mechanical Engineer
Scheeser Buckley Mayfield LLC
1540 Corporate Woods Parkway
Uniontown, OH 44685
Phone: (330) 896-4664 ext. 107
Direct: (330) 526-2707
Fax: (330) 896-9180



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