[Equest-users] DES Option I related question

Bishop, Bill wbishop at pathfinder-ea.com
Mon Oct 3 06:04:58 PDT 2011



The Treatment of District or Campus Thermal Energy in LEED V2 document
has an exception for defining downstream equipment for cases like yours
where the LEED project building houses the DES (p. 7 of 29). The
chillers and other CHW equipment are considered "downstream equipment"
for several of the EA prereqs and credits. The actual project chillers
will need to comply with the mandatory measures of ASHRAE 90.1, which
includes minimum chiller efficiency per 6.4.1.







From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Praveen
Sent: Sunday, October 02, 2011 11:20 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] DES Option I related question


Dear All

In one of my project, chillers are in my project boundary and supplying
chilled water outside the project boundary also.
Since thermal energy transport across LEED project boundary, have to
choose District Energy System option for simulation.
I have chosen option I as project would not achieve more than three
points, I want to know that is there any minimum efficiency requirement
for chillers for this case?

As per option I, only chilled water meter is required and there is no
need of modelling actual chillers and also efficiency of chillers will
not alter savings in project as uniform rate is used in both base and
proposed case.

With Thanks and Regards,
Praveen K. Jain

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