[BLDG-SIM] Lab system in ECB & LEED

[Peter Simmonds]

The first response would be to drop LEED.

 

The second would be to suggest that you VAV lab exhaust to reduce
energy, you get an extra point for ventilating in excess of 62.1
recommended minimum requirements. Classrooms will also 100% OA. The lab
supply air will be higher than 90.1 or 62.1 recommends, use the real
world cfm as a constant volume system to determine the standard case
then use the VAV fume hood control to reduce the energy consumption
compared to the adapted standard case.

 

Peter Simmonds Ph.D.

Associate
IBE Consulting Engineers

14130 Riverside Drive Suite 201

Sherman Oaks, CA 91423
p:   (818) 377-8220
f:    (818) 377-8230
m:  (818) 219-1284
IDEAS FOR THE BUILT ENVIRONMENT <BLOCKED::http://www.ibece.com/> 

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________________________________

From: BLDG-SIM at GARD.COM [mailto:BLDG-SIM at GARD.COM] On Behalf Of Eric
Yang
Sent: Thursday, June 08, 2006 7:34 AM
To: BLDG-SIM at GARD.COM
Subject: [BLDG-SIM] Lab system in ECB & LEED

 

Greetings

 

We have a project going for LEED certification EA1.  The building has
20% classroom space, 20% office space and 60% chemical lab space.  The
system has 100% OA because of the lab system.

 

According to the ASHRAE 90.1 user guide, the minimum ventilation rates
designed for the proposed building must also be modeled in the budget
building design. Ventilation is energy neutral as far as trade-offs are
concerned.

 

Since the heating and cooling load between proposed and budget building
is different, the calculated air flow of budget design is larger than
the proposed design. It means the outside air is also larger than the
proposed design.  My question here is how to have the same minimum
ventilation rates and keep it "energy neutral"?  

 

This question is more about the LEED certification and if anyone has any
suggestions and recommendations, please let me know.

 

Many thanks.

 

Eric

 

 

Eric Yang, LEED AP

Mechanical Engineer

SmithGroup

1850 K Street, NW, Suite 250

Washington, DC 20006

t  202.974.4555 (direct)

f. 202.974.4500

eric.yang at smithgroup.com 

www.smithgroup.com <http://www.smithgroup.com/> 

 

 
 
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