[Bldg-sim] Baseline HVAC system type question

Fri Feb 17 05:47:12 PST 2017

Dear Chris,

The ASHRAE INTERPRETATION IC 90.1-2007
<https://www.google.hu/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0ahUKEwjfrKS8oJfSAhXHiRoKHeV4CB4QFggrMAI&url=https%3A%2F%2Fwww.ashrae.org%2FFile%2520Library%2FdocLib%2FPublic%2F20100603_ic90120075.pdf&usg=AFQjCNGEpwM5bZsLYbRcfbO4CiEaSuvcAA&sig2=EN5_0kGzKchtWsr_RjQ1lQ>
might
help you. It states

*Exception a to G3.1.1 should be utilized first to determine if multiple
baseline HVAC system types from Table G3.1.1A are appropriate. However,
exception a to G3.1.1 only applies if the separate area is greater than
20,000 ft2 and that area must qualify for a different baseline HVAC system
type based on a different building type, heating source, number of floors,
or residential vs non-residential classification. For example, if the
office area and the warehouse area of a building are both greater than
20,000 ft2 and the office uses electric heat while the warehouse uses gas
heat, then two separate baseline systems types could be utilized. If
exception b to G3.1.1 applies to portions of the areas served by one of the
baseline HVAC systems, then separate single-zone systems conforming with
the requirements of System 3 or System 4 (depending on building heating
source) can be utilized. *

Hope this helps you!!

On Fri, Feb 17, 2017 at 2:17 PM, Chris Jones via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:

> Jim,
>
> My question is about the retail spaces on the main floor. I agree, the
> residential tower has System 1 but I am still not entirely sure about the
> retail spaces. They make up more than 20,000 ft2 so Exception G3.1.1.(a)
> applies but I am not sure if I use the area/number of floors of the entire
> building when selecting the retail baseline system. Or do I use the
> area/number of floors of the retail spaces when selecting the retail
> baseline System?
>
>
>
>
>
>
>
> [image: Title: RWDI - Description: RWDI logo]
> <http://www.rwdi.com/assets/logos/RWDI-logo.gif>
>
> *Christopher Jones, **P.Eng. *| Senior Energy Analyst
> *RWDI*
> 901 King Street West, Suite 400, Toronto, ON M5V 3H5 Canada
> Tel: (519) 823-1311 ext 2052 <(519)%20823-1311>
> rwdi.com <http://www.rwdi.com/>
>
>
>
>
>
> *From:* Jim Dirkes [mailto:jim at buildingperformanceteam.com]
> *Sent:* Friday, February 17, 2017 7:54 AM
> *To:* Chris Jones
> *Cc:* Anderson Letti; bldg-sim at lists.onebuilding.org
>
> *Subject:* Re: [Bldg-sim] Baseline HVAC system type question
>
>
>
> Chris,
>
> Residential is ALWAYS System 1 or 2, never one of the others.
>
>
>
> On Fri, Feb 17, 2017 at 7:39 AM, Chris Jones via Bldg-sim <
> bldg-sim at lists.onebuilding.org> wrote:
>
> Thank you Anderson,
>
> In this case, the retail is more than 20,000 ft2 so I need to select a
> different baseline system.
>
>
>
> My follow-up question: the building is more than 5 floors (majority is
> residential) but the retail only occupies the ground floor. Would I select
> System 7, VAV reheat as the building is more than 5 floors.
>
>
>
> Or would I select System 3 for the retail because the that space only
> occupies 1 floor?
>
>
>
>
>
>
>
> [image: Title: RWDI - Description: RWDI logo]
> <http://www.rwdi.com/assets/logos/RWDI-logo.gif>
>
> *Christopher Jones, **P.Eng. *| Senior Energy Analyst
> *RWDI*
> 901 King Street West, Suite 400, Toronto, ON M5V 3H5 Canada
> Tel: (519) 823-1311 ext 2052 <(519)%20823-1311>
> rwdi.com <http://www.rwdi.com/>
>
>
>
>
>
> *From:* Anderson Letti [mailto:anderson.a.letti at gmail.com]
> *Sent:* Thursday, February 16, 2017 2:23 PM
> *To:* Chris Jones
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Baseline HVAC system type question
>
>
>
> I believe that if the retail gross floor area is less than 1900 m2 you can
> use system 1, otherwise you can use exception a of section G3.1.1.
>
>
>
> 2017-02-16 17:12 GMT-02:00 Chris Jones via Bldg-sim <
> bldg-sim at lists.onebuilding.org>:
>
> Standard 90.1-2007. The building is a high rise residential with the
> ground floor mainly retail. 90.1-2007 says to use the predominant condition
> to select the baseline system. In this case residential is the predominant
> condition therefore I am assuming the retail spaces would also have System
> 1, PTAC? Heating is fossil fuel.
>
>
>
>
>
>
>
> [image: Title: RWDI - Description: RWDI logo]
> <http://www.rwdi.com/assets/logos/RWDI-logo.gif>
>
> *Christopher Jones, **P.Eng. *| Senior Energy Analyst
> *RWDI*
> 901 King Street West, Suite 400, Toronto, ON M5V 3H5 Canada
> Tel: (519) 823-1311 ext 2052 <(519)%20823-1311>
> rwdi.com <http://www.rwdi.com/>
>
>
>
>
>
> *From:* Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] *On
> Behalf Of *Jim Dirkes via Bldg-sim
> *Sent:* Wednesday, February 15, 2017 6:42 PM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] ASHRAE Building Performance Analysis conference
> needs knowledgeable presenters
>
>
>
> What have you learned in the past few years that others will benefit from
> hearing about? Sample topics of interest might be:
>
>    - Making the business case for modeling
>    - Modeling challenging or unusual projects or systems
>    - Post-occupancy modeling tips, tricks and lessons learned
>    - Emerging trends
>
> This conference has been an amazing event to learn, share and network.
> It's very much worth attending ... and of you present a topic part or all
> of your registration fee is waived (I should know that detail, but forgot
> and can't look it up right now.)
>
>
>
> Registration is available NOW. Presentations are being solicited NOW. Find
> more information HERE
> <https://www.ashrae.org/membership--conferences/conferences/ashrae-conferences/2017-ashrae-building-performance-analysis-conference>-
> or feel free to call me and discuss a possible topic or other concern.
>
>
>
>
>
> --
>
> James V Dirkes II, PE, BEMP, LEED AP
> CEO/President
> The Building Performance Team Inc.
> 1631 Acacia Dr, GR, Mi 49504
>
> Direct: 616.450.8653 <(616)%20450-8653>
> jim at buildingperformanceteam.com
>
> Website <http://buildingperformanceteam.com>l  LinkedIn
> <https://www.linkedin.com/pub/jim-dirkes/7/444/413> | May 2016 ASHRAE
> Journal article on energy modeling
> <http://buildingperformanceteam.com/bpt-insights-blog/item/73-modeled-performance-isn-t-actual-performance>
>
> Choice. It is perhaps the most distinct and dignifying characteristic of
> humans. Consciously and with understanding, we choose what is true,
> honorable, right, pure, lovely … or otherwise. Like the rest of humanity,
> my choices don’t always align with true, honorable, right, pure, and
> lovely, but I know those are what I set my sights upon. I choose them.
> ------------------------------
>
> *RWDI - A Platinum Member of Canada's 50 Best Managed Companies*
> This communication is intended for the sole use of the party to whom it
> was addressed and may contain information that is privileged and/or
> confidential. Any other distribution, copying or disclosure is strictly
> prohibited. If you received this email in error, please notify us
> immediately by replying to this email and delete the message without
> retaining any hard or electronic copies of same. Outgoing emails are
> scanned for viruses, but no warranty is made to their absence in this email
> or attachments. If you require any information supplied by RWDI in a
> different format to facilitate accessibility, contact the sender of the
> email, email solutions at rwdi.com or call +1.519.823.1311 <(519)%20823-1311>.
>
> ------------------------------
>
>
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>
>
>
>
> --
>
> Att.,
>
> *Eng. Anderson Letti*
>
> ASHRAE BEMP Certified - Building Energy Modeling Professional
>
>   Rua 3700, 249. CEP 88330-203
>
> Bal. Camboriú - SC - Brasil
> Tell: +55 47 99632 3912 <+55%2047%2099632-3912>
>
> Skype: anderson.letti
> ------------------------------
>
> *RWDI - A Platinum Member of Canada's 50 Best Managed Companies*
> This communication is intended for the sole use of the party to whom it
> was addressed and may contain information that is privileged and/or
> confidential. Any other distribution, copying or disclosure is strictly
> prohibited. If you received this email in error, please notify us
> immediately by replying to this email and delete the message without
> retaining any hard or electronic copies of same. Outgoing emails are
> scanned for viruses, but no warranty is made to their absence in this email
> or attachments. If you require any information supplied by RWDI in a
> different format to facilitate accessibility, contact the sender of the
> email, email solutions at rwdi.com or call +1.519.823.1311 <(519)%20823-1311>.
>
> ------------------------------
>
>
> _______________________________________________
> Bldg-sim mailing list
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
>
>
>
> --
>
> James V Dirkes II, PE, BEMP, LEED AP
> CEO/President
> The Building Performance Team Inc.
> 1631 Acacia Dr, GR, Mi 49504
>
> Direct: 616.450.8653 <(616)%20450-8653>
> jim at buildingperformanceteam.com
>
> Website <http://buildingperformanceteam.com>l  LinkedIn
> <https://www.linkedin.com/pub/jim-dirkes/7/444/413> | May 2016 ASHRAE
> Journal article on energy modeling
> <http://buildingperformanceteam.com/bpt-insights-blog/item/73-modeled-performance-isn-t-actual-performance>
>
> Choice. It is perhaps the most distinct and dignifying characteristic of
> humans. Consciously and with understanding, we choose what is true,
> honorable, right, pure, lovely … or otherwise. Like the rest of humanity,
> my choices don’t always align with true, honorable, right, pure, and
> lovely, but I know those are what I set my sights upon. I choose them.
> ------------------------------
> *RWDI - A Platinum Member of Canada's 50 Best Managed Companies*
> This communication is intended for the sole use of the party to whom it
> was addressed and may contain information that is privileged and/or
> confidential. Any other distribution, copying or disclosure is strictly
> prohibited. If you received this email in error, please notify us
> immediately by replying to this email and delete the message without
> retaining any hard or electronic copies of same. Outgoing emails are
> scanned for viruses, but no warranty is made to their absence in this email
> or attachments. If you require any information supplied by RWDI in a
> different format to facilitate accessibility, contact the sender of the
> email, email solutions at rwdi.com or call +1.519.823.1311 <(519)%20823-1311>.
>
> ------------------------------
>
> _______________________________________________
> Bldg-sim mailing list
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
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>
>

-- 

Javed Iqbal, LEED AP, CEA
Sr. Energy Analyst
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