[BLDG-SIM] EA Cr 1 campuses

[Jeff Haberl]

Kathryn:

 

The modeling of a group of buildings, including the physical plant and
distribution system was discussed at length at the last 90.1 ECB meeting
at Long Beach, without conclusion. There are examples of how to do this
in the ASHARE literature, but probably not a consensus method as yet. 

 

Issues include defining the baseline, how to take measurements to
calibrate the simulation, where to take these measurements, etc. These
all depend on what the ECRMs are.

 

A few papers from our lab that might help include:

 

ESL-PA-92-05-04

The Use of a Monthly Whole-Campus Energy Analysis for Evaluating a Third
Party Energy Service Agreement, Proceedings of the ACEEE 1992 Summer
Study on Energy Efficiency in Buildings, pp. 3.95 - 3.110

Haberl, J. S.

22 pages, pdf

 

ESL-PA-93-01-05

Characterizing Steam and Chilled Water Use for a Large Campus in Central
Texas, ASHRAE Transactions Symposia, Vol. 99, Pt. 2. June, pp. 465 -
476.

Haberl, J. S.; R. Beasley, D. Thompson

12 pages, pdf

 

ESL-TH-99-08-01

A Methodology for Baselining the Energy Use at Large Campus Utility
Plants for the Purpose of Measuring Energy Savings from Energy
Conservation Retrofits, Masters Thesis, Department of Mechanical
Engineering, Texas A&M University

Beasley, Rodney Craig

237 pages, pdf

 

ESL-PA-03-10-01

How Much Can a Campus Save on Utility Bills by Turning a 5-Workday Week
into a 4-Workday Week, Proceedings of the International Conference for
Enhanced Building Operations (ICEBO), Berkeley, California, October
13-15.

Zhou, J.; Giebler, T.; Wei, G.; Turner, W. D.

8 pages, pdf

 

ESL-PA-89-10-01

Whole-Campus Performance Analysis Methods:  Early Results from Studies
at the Princeton Campus, Proceedings of the 6th Annual Symposium on
Improving Building Systems in Hot and Humid Climates, October 3-4,
Dallas, TX, pp. F2 - F9.

Haberl, J. S.; Englander, S.; Reynolds, C.; McKay, M.; Nyquist, T.

17 pages, pdf

 

Good Luck!

 

Jeff

 

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8=)  8=?

Jeff S. Haberl, Ph.D.,P.E.............................jhaberl at tamu.edu
<mailto:P.E...........................................jhaberl at tamu.edu> 

Professor......................................................Office
Ph: 979-845-6507

Department of Architecture.......................Lab Ph: 979-845-6065 

Energy Systems Laboratory......................FAX: 979-862-2457 

Texas A&M University..............................77843-3581

College Station, Texas, USA, 77843..........URL: www-esl.tamu.edu

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8=)  8=0 

 

________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of kathryn
l
Sent: Thursday, August 02, 2007 11:31 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] EA Cr 1 campuses

 

We are modeling a group of six buildings for a university which will be
served by the current campus CUP's steam and chilled water loops.
These buildings will all be submitted for  LEED certification as one
project.  Does anyone know if we can model the baseline from ASHRAE
90.1-2004 Appendix G for each building according to its individual
square footage, or if we have to choose the baseline system based off of
the total square footage for the entire group of buildings?  For our
project this would mean the difference between 90.1's System 5 (DX
cooling) and System 7 (chilled water).    

I found this little excerpt from the LEED Application Guide for multiple
buildings and campuses, but feel it doesn't really directly tackle the
question of choosing the baseline system but could potentially be
interpretted to mean that each building is considered separately during
the modeling process and therefor would have a baseline system based off
of its own square footage: 

 

EA Credit 1: Optimize Energy Performance 

Application Guidance 

Requirements 

This credit applies to each building within the project scope. To
receive a single rating for a group of buildings, use a weighted average
for the group of buildings based on their conditioned square footage, or
aggregate the data into one PRM calculation, so that performance is
achieved by buildings of varying sizes within a certifying group. Each
building must still meet EA Prerequisite 1 and may receive its own
rating if that is desired. 

 

 Any experience with this?  Any guidance would be greatly appreciated.  

Thanks!

Kathryn



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