[Equest-users] High pumps equivalent full load hours in the model

[Morteza Kasmai]

Hello all,


I received following LEED review comment:



“The Baseline model pumps equivalent full load hours (determined by
dividing the total annual pumps consumption (45,761 KWH) by the pump peak
demand (5.426 KW) reflected in the simulation output report) is 8,433
hours/year, which is unexpectedly high given the anticipated schedule of
operation for the project.”



This is a 9 story residential building with unfinished retail space in the
ground floor. Primary HVAC system in the baseline case is PTAC and the
secondary system that serves non-residential spaces is System 7 – VAV with
reheat and chilled water. HVAC system in unfinished retail space of the
propose model is System 7 as well. Pumps equivalent full load hours for the
proposed model is 8,089 hours/year (15,401/1.905), which is close to EFLH
of the baseline case.



Is this high EFLH loads relate to the primary and secondary pumps in both
of the models and are justifiable or there is something wrong with the
models. Attached are inp and pd2 files of the baseline model from version
3.65 build 7173.


Thank you for your help,

Morteza Kasmaei
Senior Architect
LEED AP BD+C, GGP
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