[Equest-users] Hours Under Heated

[Colleen Nelson]

Hello,

 

I have two models of the same building, both are reporting unmet heating
hours.

 

The first is a packaged VAV system with 2 HVAC system definitions:

.         Core zones are served by DX coils for cooling and hot water
heating coils

.         It is a packaged VAV system with HW reheat

.         Perimeter zones have no cooling and HW baseboards

.         BEPS report indicates 69.6% of hours with any zone outside of
throttling range

 

The second is a heat pump system also with 2 HVAC system definitions:

.         Core zones are served by DX cooling coils and heat pump for
heating

.         It is a ground-source heat pump system

.         Perimeter zones have no cooling with HW baseboards

.         BEPS report indicates 44.5% of hours with any zone outside of
throttling range

 

Plant load is satisfied in both cases.

 

Any thoughts?

 

Thanks in advance.

 

 

Colleen Nelson, LEED-AP

Mechanical Engineering

Michaud Cooley Erickson

612.673.6995

 

 

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