[Equest-users] Project Building with too many spaces

Fri Jan 13 15:13:35 PST 2017

While ASHRAE's guidance sets a "floor" for the "minimum resolution" of detail for your zone geometries, that minimum is most likely to be set by the proposed case system(s) as the baseline case should match the proposed, so I would start there.

With such a large project - it will be advantageous to be relatively "aggressive" in combining zones/spaces with similar load profiles.  Consider also whether it may be advantageous to utilize shell/floor multipliers.

Consider also that the wizards have some built-in capacity to help you create "combined occupancy" zones through the optional zone allocation screens for each shell.  You can for example specify that a given floor/shell's "Core" zone is 60% open office, 20% corridors, and 10% mechanical/electrical rooms, and the wizards will generate interior load profiles, occupancy densities, etc. unique to that shell.  Utilizing this feature is another option in your toolbox to consider.

Probably also worth noting there are some (simple) illustrations in the 90.1 user's manual to illustrate the minimum resolution of zoning as prescribed in appendix G.  It's quite similar to the "core/perimeter" zoning as the wizards will generate with relatively simple shell floor plates.

Best of luck!

~Nick

[cid:image002.png at 01D26DB8.890A2840]
Nick Caton, P.E., BEMP
  Senior Energy Engineer
  Energy and Sustainability Services
  Schneider Electric

D  913.564.6361
M  785.410.3317
E  nicholas.caton at schneider-electric.com<mailto:nicholas.caton at schneider-electric.com>
F  913.564.6380

15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States

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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Paula A Hernández via Equest-users
Sent: Friday, January 13, 2017 4:44 AM
To: 'Anthony' <Anthony at GreenEngineer.com>; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Project Building with too many spaces

Thank you Anthony,

I read it many times, but wasn't sure, will keep thinking!,

Paula

[Region XII Horizontal-small]
Ingeniera Paula Andrea Hernández LEED  AP (BD +C)
Capitulo Argentino de ASHRAE Board Member -  Region XII MP RVC

Estudio Ingeniero Mario Pedro Hernández
Tel./Fax: 4302-9561 Tel.: 4303-3481
Av. Montes de Oca 1103 5º D - C.A.B.A.
Web Site: www.mphingenieria.com.ar<http://www.mphingenieria.com.ar/>
e-mail: paulahernandez4 at fibertel.com.ar<mailto:mphingenieria at fibertel.com.ar>

De: Anthony [mailto:Anthony at GreenEngineer.com]
Enviado el: jueves, 12 de enero de 2017 07:28 p.m.
Para: 'Paula A Hernández' <paulahernandez4 at fibertel.com.ar<mailto:paulahernandez4 at fibertel.com.ar>>; equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Asunto: RE: [Equest-users] Project Building with too many spaces

Take a look at Table G3.1.  The sub sections on Thermal Blocks and HVAC Systems describe how you can combine individual spaces into model zones which will go a long way towards simplifying your model.

Anthony Hardman, PE, BEAP, LEED AP BD+C
Senior Building Performance Analyst
The Green Engineer, Inc.<http://www.greenengineer.com/>
Sustainable Design Consulting
54 Junction Square Dr.
Concord, MA 01742
O: (978) 369-8978
D: (978) 610-2801
C: (720) 840-7862

The Green Engineer, Inc. is a Certified B Corporation

From: Paula A Hernández via Equest-users [mailto:equest-users at lists.onebuilding.org]
Sent: Thursday, January 12, 2017 5:57 AM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] Project Building with too many spaces

Hi everyone,

I am working in a very large building, which has many different space usage types.

The HVAC Project consists in a lot of AHUs, constant volume, fan coil units and active chilled beams.

The issue is that there are almost 1500 spaces distributed in the different systems.

I am a little disoriented because I started modeling my Project Building with each one of the AHUs without discriminating each space, but this AHUs attend different space usage types, for instance, one of them is for the "Pharmacy", and it attends circulation, office spaces and storage.

According to the number of floors, building area and heating source, my Baseline HVAC system will be System 7, Variable air volume with reheat. So I will assign one VAV AHU for each floor. And then, how will I assign each VAV zone?, do I have to model all the 1500 spaces or will it be enough to model a VAV box for  each AHU as defined in the Project Building?,

I will really appreciate your comments on this,

Thank you,

Paula

[Region XII Horizontal-small]
Ingeniera Paula Andrea Hernández LEED  AP (BD +C)
Capitulo Argentino de ASHRAE Board Member -  Region XII MP RVC

Estudio Ingeniero Mario Pedro Hernández
Tel./Fax: 4302-9561 Tel.: 4303-3481
Av. Montes de Oca 1103 5º D - C.A.B.A.
Web Site: www.mphingenieria.com.ar<http://www.mphingenieria.com.ar/>
e-mail: paulahernandez4 at fibertel.com.ar<mailto:mphingenieria at fibertel.com.ar>

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