[Equest-users] Interpreting SIM reports

Nicholas Caton Nicholas.Caton at se.com
Thu Jun 13 11:02:45 PDT 2019


Hi everyone,

Can anyone help me assert or correct my understanding on something?  This is from a model built in v3.65, b7175, doe2.2 engine (with intent to upconvert the project to doe2.3 before I'm done).

Report PV-A lists the capacity for each heating/cooling loop.  Here I'm cropping to just the loops, and highlighting what I'm used to thinking of as the "peak" coincident capacity requirement for a chilled water loop - 13.909 MMBtu/hr (that's millions):

[cid:image002.jpg at 01D521E8.47C63900]

The following reports PS-H go into more detail on each item listed in PV-A.  Here is the report for the same "Chilled Water Loop," with a coule more highlights:

[cid:image003.png at 01D521E8.47C63900]

Immediately, I note that 13.909 MMBtu/hr (1,159 tons) aligns with PV-A, however I do not see that number matching (intuitively) any of the other figures or sums provided on this sheet.  The figure 5,625.126 kBtu/hr (469 tons) aligns with my expectations for peak load on the loop, where nominal capacity of the associated chillers on this loop are in the same ballpark (one is 444 tons and one is 210 tons on paper & @ design conditions, and I'm told they commonly do not need to engage the smaller chiller during the dead of summer).

Can anyone help me reconcile the differences between what's reported as "Cooling Capacity" in PV-A, in relation to the annual peak loads indicated for the same loop in the PS-H report?

Thanks!

~Nick

[cid:image005.png at 01D515A3.47EDD880]
Nick Caton, P.E., BEMP
  Senior Energy Engineer
  Regional Energy Engineering Manager
  Energy and Sustainability Services
  Energy Performance Contracting
D
M
F
E
913 . 564 . 6361
785 . 410 . 3317
913 . 564 . 6380
nicholas.caton at se.com<mailto:nicholas.caton at se.com>
15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States
[cid:image006.png at 01D515A3.47EDD880]


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