[Equest-users] Existing Building, LEED NC

[CleanTech Analytics]

Paul,
Great points- I do not think that there will be any systems serving both
sides but I will now double check, also will look into the previous space
use and HVAC type to be sure about the baseline envelope

 -Thank you for your input.


*Jeremiah D. Crossett*
*CleanTech Analytics*
*503-688-8951*
*www.cleantechanalytics.com* <http://www.cleantechanalytics.com>


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On Thu, Aug 2, 2012 at 1:39 PM, Paul Riemer <Paul.Riemer at dunhameng.com>wrote:

> I agree and suggest you model the common wall (#1) as adiabatic, assuming
> no services will cross the wall and all the spaces are currently
> conditioned spaces.  If you have an air, water, or refrigerant system
> serving both sides of the wall, you will have to take the whole system.
> And if you are converting a semiheated or unconditioned space, use some
> judgment on the baseline envelope.  ****
>
> ** **
>
> As a tangent, we may need to improve the definitions of conditioned space
> in ASHRAE 90.1.  Classifying conditioned/semiheated/unconditioned based on
> the output capacity of the heating equipment seems problematic, especially
> for the hyper-insulating & Passive House devotees.****
>
> ** **
>
> Happy modeling.****
>
> ** **
>
> *Paul Riemer, PE, LEED AP BD+C* ****
>
> Associate / Mechanical****
>
> *DUNHAM*****
>
> ** **
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Ritwik Kakati
> *Sent:* Thursday, August 02, 2012 3:01 PM
> *To:* CleanTech Analytics; equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Existing Building, LEED NC****
>
> ** **
>
> Jeremiah,****
>
> ** **
>
> We recently submitted an energy model for the renovation of an existing
> building to USGBC (for NC 2009), and although the first round of comments
> came back and my model is still not perfect yet, I can answer what I did to
> your questions 2, 3 & 4:****
>
> ** **
>
> 2. Did not rotate the baseline and take averages. Only submitted the
> baseline for actual orientation.****
>
> 3. Baseline constructions were existing conditions before the building was
> renovated.****
>
> 4. HVAC system was based on Appendix G of 90.1, not the current/existing
> system in the building. ****
>
> ** **
>
> For all the above, USGBC so far has not raised any comments/objections for
> my model, so I am hoping I am correct.****
>
> ** **
>
> Hope this helps.****
>
> ** **
>
> Thanks,****
>
> ** **
>
> Ritwik Kakati, LEED Green Associate****
>
> Design Engineer****
>
> DAGHER ENGINEERING, PLLC****
>
> 29 Broadway, New York, NY 10006****
>
> T. 212.480.2591 x140****
>
> F. 212.480.2654****
>
> rkakati at dagherengineering.com****
>
> www.dagherengineering.com****
>
> ** **
>
> Save Trees, Consider the Environment. Please print only when necessary.***
> *
>
> ** **
>
> This email and any attachments may contain confidential or proprietary
> information and use or distribution is strictly prohibited. If you are not
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> PLLC has no responsibility for errors or discrepancies that may occur in
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>
> ** **
>
> ** **
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *CleanTech
> Analytics
> *Sent:* Thursday, August 02, 2012 3:16 PM
> *To:* bldg-sim at lists.onebuilding.org; EnergyPlus_Support at yahoogroups.com;
> equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Existing Building, LEED NC****
>
> ** **
>
> Good day to all..****
>
> ** **
>
> Working on modeling an existing building per 90.1 for LEED certification
> and can not find clear answers in the standard or users guide- and seeking
> of the advise of the Bidg-Sim community- ****
>
> The building is basically a shell- the 6 inch tilt up concrete walls and
> concrete floor are the only things remaining un-changed. The building is
> installing new HVAC systems, a new roof, a new lighting systems, new
> skylights, new doors, new windows and insulating the existing walls. The
> space is 35,000 square feet, and beside another building. The building
> owners bought out their former neighbor and are expanding into their space,
> the space shares a wall with their current space. ****
>
> ** **
>
>    1. Adiabatic wall- Should it be Modeled with an adiabatic wall
>    separating the "two" buildings (that are actually one building with a
>    separating wall and separate address), or should the "other building" not
>    seeking LEED certification be included in the model?****
>    2. Rotated average baseline- This is an existing building and
>    orientation is set, so is this procedure still necessary or required by
>    90.1/LEED****
>    3. Baseline Constructions- Should the baseline reflect the walls as
>    they where before renovation (Un insulated tilt up concrete walls/R-5 roof
>    deck?) or should it use the ASHRAE light weight constructions with 2007
>    insulation for the climate, or should it use the actual constructions but
>    add ASHRAE 2007 insulation?****
>    4. The HVAC system is a CAV, with convective natural gas heating and
>    and DX cooling- roof top units, the baseline system for this should be
>    system # 5 PVAV- or should the baseline HVAC system be what ever system was
>    in the building before the renovation?****
>
> ** **
>
> An advanced thank you goes out to all that respond- ****
>
> ** **
>
> ** **
>
>
> ****
>
> *Jeremiah D. Crossett*****
>
> *CleanTech Analytics*****
>
> *503-688-8951*****
>
> *www.cleantechanalytics.com* <http://www.cleantechanalytics.com>****
>
> ** **
>
> ****
>
> *This document may contain valuable information proprietary to CleanTech
> Analytics which is private and confidential. It may not be shared, copied,
> stored or transmitted in any form without the prior written consent of
> CleanTech Analytics***
>
> ** **
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