[Bldg-sim] How to model a New Building with an Existing District Cooling Plant

[Wealend, Edwin]

Amit,

There's a fairly comprehensive document, "Treatment of District or Campus Thermal Energy in LEED V2 and LEED 2009 - Design & Construction," which explains the options available to you, of which there are three:


*         Measurement of existing plant to determine efficiencies

*         Simulation of existing plant with existing building to determine efficiencies

*         If data is unavailable for the above 2 options, then defaults are allowed.

You model your baseline building as a normal standalone building, with the relevant chiller plant for the climate zone etc. Let me know if you can't find a copy of the guide and I'll send one over.

Regards,
Ed

Edwin Wealend
Senior Engineer

CUNDALL Hong Kong
9th Floor Chinachem Johnston Plaza
178-186 Johnston Road
Wanchai, Hong Kong
tel:    +852 2566 6205
fax:   +852 2566 6235

P  Please consider the environment before printing this e-mail
Important Notice.  Use of this email and any attachments is subject to the terms on www.cundall.com.hk<http://www.cundall.com.hk/>
Please read that notice before proceeding.
If you cannot access these terms please telephone (852) 2566 6260 or reply to this email and we will send you a copy

From: amit bhansali [mailto:amitbhansali7 at gmail.com]
Sent: Friday, March 22, 2013 00:07
To: bldg-sim at lists.onebuilding.org
Cc: awalker at dfwcgi.com
Subject: [Bldg-sim] How to model a New Building with an Existing District Cooling Plant

Hi all,
I am trying to get an idea of how to model a new mixed use building (Office + retail) with a existing district cooling plant  serving other office buildings on the site for LEED purposes.
Since it is a district cooling system, the plant  load, efficiency , performance and operation is dependent on the other existing buildings on the site as well. I am not sure how to separate the energy metrics in the model  for the plant associated with the  new proposed building.

1.Does the baseline building model also has to take into consideration the existing plant in simulation or the baseline will be just modeled is it will be for a new building with the plant type being decided by the conditioned square footage of the new proposed building?
2. When modeling the proposed building, do i neglect the effects of other building on the district cooling plant performance and use the part load efficiency curves and load shedding schedules for the plant equipments ( towers, pumps, Chillers) as if they were serving only the new proposed building? has anyone done a model like this and how does the LEED guidelines approach this issue?

The simulation community help is much appreciated.
Please respond if you have any questions as well.


--
Thanks

Sincerely,
Amit Bhansali, LEED Green Associate, M.S. , EIT
Mobile: (+1)972-207-5180

www.godparents.in<http://www.godparents.in/>
Please do not print this e-mail unless necessary
For further information about Cundall please visit http://www.cundall.com/Locations/Asia/Asia.aspx
--------------------------------------------------------------------------------
Cundall Hong Kong Limited.  Registered office: Chinachem Johnston Plaza, 178-186 Johnston Road, Wanchai, Hong Kong.
All information contained in this email is private and confidential, and may also be privileged. 
This email and its attachments are intended solely for the use of the addressee only and if any third party whatsoever
comes into possession of this email,they rely on it at their own risk and Cundall accepts no duty or responsibility 
(including in negligence) to any such third party.
If you have received this email in error, please immediately notify the sender and delete all copies from your system.
Privacy Policy: Use of this email and any attachments is subject to the terms on our Website at 
http://www.cundall.com/Misc/Privacy-Policy.aspx If you cannot access these terms,
please email terms at cundall.com with SEND TERMS in the subject heading or telephone +44 (0191) 213 1515 and we will send you a copy. 
All of our business is conducted in accordance with Cundall’s Ethical Business Policy. http://www.cundall.com/Knowledgehub/Ethical-Business-Policy.aspx
--------------------------------------------------------------------------------
This email message has been scanned for viruses by Mimecast. For more information please visit http://www.mimecast.com 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20130322/c11392e3/attachment-0002.htm>