[Equest-users] Chiller number and size of the ASHRAE 90.1

[Anthony Hardman]

Esmireta,

 

Chilled water used for a manufacturing process would be considered a process
load, which you'd have to model identically in both baseline and proposed
cases [Table G3.1(12)(baseline)].  Exception: Your baseline model only has
to use minimum efficient chillers (of the same type as the proposed design)
as shown in Table 6.8.1.  For example, if your proposed case has a highly
efficient screw chiller, then your base case need only include a screw
chiller with 90.1 minimum efficiency.

 

Any process load savings have to be reported as an ECM for LEED purposes.
If the project team is claiming that the proposed manufacturing process is
"more efficient" than industry practice, then the burden of proof is on the
project team to provide documentation that describes current industry
"standard practice," and how the proposed design exceeds those standards.

 

Anthony Hardman, PE, LEED AP BD&C

Building Performance Analyst

 <http://www.greenengineer.com/index.htm> Description: greenlogo 24 THE
GREEN ENGINEER, LLP 

Sustainable Design Consulting - Energy Modeling - LEED Project Management 

50 Beharrell St

Concord, MA 01742

O: 978/610-2801

C: 720/840-7862

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From: Esmireta [mailto:e2fye2 at 163.com] 
Sent: Monday, December 12, 2011 4:53 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Chiller number and size of the ASHRAE 90.1

 

Dear all,

According to the Table G3.1.3.7 of the ASHRAE90.1, the number and type of
chillers could be determined. But I encountered a project of a industry
factory, in which the industry process need a lot of cooling. I notice the
Table G3.1.3.7 is for "Building Peak Cooling Load", I take it as the
industry cooling will not be included in the Building Peak Cooling Load, is
it correct? If so, is there any efficiency, number or type requirement of
the industry chiller? Can I exclude the industry cooling energy in the
building energy simulation?

Thanks!

 

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