[Equest-users] Manufacturing Process Loads for LEED EA Credit 1

[Jason Glazer]

Section G1.2 of 90.1-2007 Appendix G says: "Both the 
proposed building performance and the baseline building 
performance shall include all end-use load components, such 
as receptacle and process loads."

jason

On 10/21/2010 11:26 PM, Michael Mantai wrote:
> I've read the posts regarding how to consider process loads related to
> manufacturing facilities, particularly with respect to how to even meet the
> required prerequisite LEED energy performance requirements when the process
> load dominates energy usage.  I'm not sure I agree that manufacturing
> process loads need to be considered in the model, and would like to throw
> this thought process out for any opinions.
>
> ASHRAE 90.1 Section 2.3 states that "The provisions of this standard do not
> apply to:... (c) equipment and portions of building systems that use energy
> primarily to provide for industrial, manufacturing, or commercial
> processes."
>
> I'm interpreting this to mean that Appendix G, as a provision of 90.1, also
> does not apply to systems used in manufacturing processes.
>
> 90.1 Table G3.1 Item 12 states that "Receptacle and process loads, such as
> those for office and other equipment, shall be estimated based on the
> building type or space type category and shall be assumed to be identical in
> the proposed and baseline building designs..."
>
> I'm interpreting that this reference to "process loads" only applies to
> process loads that are NOT related to manufacturing.
>
> The LEED reference guides and CIRs do not appear to address manufacturing
> loads specifically as to whether they can be excluded.
>
> Admittedly this interpretation is self-serving as we are trying to model a
> facility with dominant manufacturing energy use.
>
> What I would like to do is ignore the loads associated with the
> manufacturing process.  This would include both the electricity used by the
> equipment as well as cooling and ventilation needed specifically for the
> manufacturing equipment.  The "process" load for LEED modeling purposes then
> would only include things such as in a typical office (computers,
> appliances, other plug loads), which would most likely be done using the 25%
> minimum.
>
> For those of you that have modeled manufacturing facilities, I'd like to
> know if and why you chose to include the manufacturing process loads in the
> model, and if you also excluded the cooling energy if cooling is only
> required for the equipment (referring to space cooling for the areas housing
> the equipment, not water cooling).
>
>
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-- 
Jason Glazer, P.E., GARD Analytics, 90.1 ECB chair
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