<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">Dear List, </div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">
I am looking for some EUI information to use in determining reasonable process loads. </div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">
Currently I have used 2 W /sqft for a simple internal equipment object. The assumption seems reasonable, but I simply guessed- so am hopeful to find some reference documentation to base my assumptions on. Alternatively the design team and I have discussed measuring the equipment at peak or average load. If we where to measure, it would be great to have some guidelines for such large equipment.. (school bus size injection plastic molding) </div>
<div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">Here is the comment I got from a LEED reviewer: </div>
<div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px"> <i>It is not recommended that you use exactly 25% as the value for process loads. You should estimate, as closely as possible, what your actual process loads will be, and then use those estimates. Following is an excerpt of commonly used review text that GBCI uses to address this very issue, "The unregulated receptacle and process energy should not be arbitrarily set to 25% of the total baseline building cost, but should reflect the actual process loads in the appropriate spaces as required by ASHRAE 90.1-2007 Table G3.1.1(a) and G3.1.12. Revise the proposed and baseline building energy models as necessary to reflect the actual unregulated inputs (such as receptacle loads, kitchen loads, elevator loads, etc.) in the appropriate spaces. In addition, revise the Supplemental Table 1.4 reflecting the changes. If the process cost is below 25% of the Baseline energy cost after making any necessary changes, provide an additional narrative justification for the low process cost." Note that the 25% process load minimum included in the </i></span><i><span class="" style="background-color:rgb(255,255,204);color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">LEED</span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px"> Reference Guide is not a requirement. The process loads should be modeled as closely as possible to the actual process loads. If process loads are significantly less than 25% of the building's total energy loads, then a narrative should be provided to address how process loads were determined.</span></i><br>
</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px"><br></span></div><div class="gmail_default">
<font face="arial, sans-serif">Also, I have been asked to do an exceptional calculation for the highly efficient factory equipment, however the LEED reviewer wants the nameplate capacity to be the same. This would not permit me to use the method I had previously- the simple internal equipment with latent sensible split, then radiant convective split. Also if we measure the actual equipment then how would we compare to reference equipment.. </font></div>
<div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">Here is the comment from another LEED reviewer that my client contacted: </div>
<div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><i style="color:rgb(34,34,34);font-family:Arial;font-size:13px">The energy efficiency measures for [MEASURE DESCRIPTIONS] should be modeled using the Exceptional Calculation methodology. A narrative should describe all Baseline and Proposed case assumptions included for this measure as well as the calculation methodology used to determine the projected savings. The narrative and energy savings should be reported separately from the other efficiency measures in Section 1.7 - Table EAp2-7. The Baseline case description should verify that the manufacturing equipment installed is not standard practice for a similar newly constructed facility by referencing a recently published document (published within five years of the project registration date), utility program that incentivizes the equipment installed, or by documenting systems used to perform the same function in other newly constructed facilities (three facilities built within the past five years of the project registration date). The baseline system type described should also have the same output capacity as the proposed system type modeled.</i><br>
</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><i style="color:rgb(34,34,34);font-family:Arial;font-size:13px"><br></i></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">
So my questions are:</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">
How are factories normally modeled?</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"> How is such large equipment normally modeled?</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">
Are there any published benchmarks to reference?</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"> Are there any guidelines on measuring the performance of such equipment? <br>
</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)">Any feedback or ideas are welcome and thanks </div>
<div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(51,51,51)"> </div><div><div dir="ltr"><div><font color="#336666"><i><br></i></font></div><div><b><span style="background-color:rgb(255,255,255)"><font size="1" color="#336666"><b style="font-family:Verdana,sans-serif"><br>
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</div>Jeremiah D. Crossett</b><span style="font-family:Verdana,sans-serif"> </span><font face="Verdana, sans-serif">| Senior </font><font face="Verdana, sans-serif">Analyst</font><font face="Verdana, sans-serif"> | Phase Change Energy Solutions</font></font></b></div>
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