[Equest-users] Multi Unit Residential Building with Baseboard

[Sharad Kumar via Equest-users]

Hi Ali,

As per me the LS-F report is the report which has basic load based
calculation as per the building data. Whereas the BEPS is the building fuel
consumption.

I think you should not be confused with the OA being not heated as it would
cause little or lesser load to the building.

Also the LS-F report has all the components having the heating or cooling
loads like occupancy, wall, roof and glass heat transfer as well as many
more things.

I think that the eQUEST is not that incapable to not to have the
calculation covering the outside air.

I think the room air is being treated as OA + supply air in the normal LS-F
report.

I don't know what sort of calculation you might have have done but the LS-F
report is the basic load based calculation which are dependent on all the
factors causing the heat load.

The BEPS report might cover the water as well as air-side fuel or
electricity consumption in the various end-uses.

*Thanks,*
*Sharad.Kumar*


> On Thu, Feb 9, 2017 at 3:34 PM, via Equest-users <
> equest-users at lists.onebuilding.org> wrote:
>
>> Hi folks,
>> I am using eQUEST to model electric baseboard heating with ventilation
>> in
>> a multi-story residential building. I set electric baseboards at the
>> zone
>> level, and chose packaged single zone (no heating and only baseboard) at
>> the system level to model the ventilation. The model runs and gives me
>> zero unmet hours, but the electricity consumption for baseboards is less
>> than what I am expecting.
>>
>> The total building load in LS-F report seems to be right, and quite
>> aligns
>> with my expectation. Now, this load must be met via baseboards that are
>> installed in the residential units. Also, the baseboards must provide
>> heat
>> to heat up the constant running fans for the dedicated outdoor air that
>> I
>> assigned to each zone.
>>
>> The electricity consumption that I get in BEPS report is only enough to
>> meet the building load (as reported in LS-F) but not large enough to
>> heat
>> up the OA. I did a simple hand calculation for one space during Jan, and
>> the values  for electricity consumption in baseboards are off by 40%.
>>
>> Any thoughts on what I am doing wrong here?
>>
>> P.S., for the purpose of dedicated outdoor air I set a 24/7 “ON”
>> schedule
>> for fans that blow into each unit.
>>
>> Thanks for your comments
>> Ali Mo, EIT
>> Design Engineer
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