[Bldg-sim] [Hap-users] Baseline Plant Type

[Whately, Tyler]

Seems like remote source chilled water would be treated like purchased
heat under G3.1.1.1, where you would come up with an equivalent cost
rate based on how the remote central chiller plant is purchasing energy
and all other efficiencies related to producing chilled water and
pumping to your building.  Then you would have to use that rate in both
baseline and proposed buildings, similar to an electric or gas rate.
This is just my guess, anyone else have an idea from Bldg-Sim mailing
list?

 

So to answer your original question in HAP, you would choose remote
source chilled water, the same as proposed building, with same cost
rate, then change all baseline cooling  to chilled water under each of
your systems.  This will essentially make chiller water "cost neutral"
and not give you an opportunity to improve in cooling efficiency over
the baseline building.  

 

I came across this document which may be helpful as well  
http://www.usgbc.org/ShowFile.aspx?DocumentID=4176.

 

 

Tyler Whately, E.I.T.
Mechanical Engineer
LEED Accredited Professional

MOSELEY ARCHITECTS 
Architecture. Engineering. Interiors. Planning
3200 Norfolk Street
Richmond, VA 23230
804.794.7555
FAX 804.355.5690
www.moseleyarchitects.com
www.moseleyprojects.com


Please consider the environment before printing this e-mail.

 

 

From: hap-users-bounces at lists.onebuilding.org
[mailto:hap-users-bounces at lists.onebuilding.org] On Behalf Of Ahmed
Azhari
Sent: Thursday, May 06, 2010 10:45 AM
To: hap-users at lists.onebuilding.org
Subject: [Hap-users] Baseline Plant Type

 

Hello users,

 

I am modeling a residential baseline building according to ASHRAE 90.1
where I have packaged DX Fan coil units in the zones. In HAP4.4 when I
define a plant for this system what should I choose under the plant type
as indicated below? My proposed building is remote source chilled water.


 

I appreciate any help. 

 

 

  

 

Regards,

________________________________________________________________________
__

Ahmed Azhari, B.Eng., LEED(r) AP

Energy Analyst

 

Jain Sustainability Consultants Inc.

 

2260 Argentia Road, 2nd Floor

Mississauga, Ontario L5N 6H7, CANADA

Tel:  (905) 542 7211 Ext 234

Fax: (905) 542 7622

Email: aazhari at jainconsultants.com <mailto:aazhari at jainconsultants.com> 

Web: www.jainassoc.com <http://www.jainassoc.com/> 

 

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