[Equest-users] Data Entry

[B. Fountain]

Good questions ...

First to lighting - I typically do not enter all of the photometric info. 
I simply enter the lighting power density (W/sq-ft) for each of my model
spaces.  I think you will find this is typical of most modellers. 
Spreadsheets help here.

Second, to HVAC - most of those fields are there so you can enter one of
them depending on the information you have.  You are quite correct you
don't need to enter cfm/sq-ft if you have cfm -- just put in cfm and leave
the rest.  Similarly, for OA -- if you put in values for OA cfm,
cfm/person and cfm/sq-ft, eQUEST will use the cfm value and ignore the
cfm/person and cfm/sq-ft values.

You can calculate fan energy as either kW/cfm OR static pressure x flow
(divided by a constant and total efficiency).

Another note - when it comes to HVAC, many fields can be entered at both
the system and zonal level.  Zonal takes precedence.  (i.e if you enter a
total system cfm and some zonal cfm then the remainder of the system cfm
values is distributed proportionally between the zones without zonal
values entered).  This is especially notable for OA as the wizards put the
OA values to the zones.

Look to your output reports -- especially the SV-A report for HVAC to show
you how eQUEST is interpreting your HVAC entries.

Good luck.


> Fellow eQuesters,
>
>     I'm sorry to continue posting such basic questions, but I am, as
> usual,
> lost.
>     It seems that entering data for lighting and for HVAC (in the detailed
> model) involves hundreds of fields, many of which really don't seem
> relevant.  For example, the lighting fields include many questions about
> photometrics.  However, obviously, if I have a lighting time schedule and
> the lighting systems defined, I should be able, using simple arithmetic,
> to
> calculate how much energy it uses.  However, eQuest wants a bunch of other
> information (such as photometrics), which has taken me forever to
> calculate.
> However, I dare not omit such data since I don't know what eQuest's
> algorithms are.
>     I am just starting to model the HVAC systems and things appear even
> worse.  I don't need eQuest to design the systems for me.  The systems
> exist
> on paper.  How do I eliminate all of the irrelevant fields and just enter
> the important stuff that actually describes my systems?  I am especially
> perplexed when there are three fields asking for A, B, and the ratio of A
> to
> B.  Why doesn't it just ask for two rather than all three such data?  What
> if a user enters conflicting data, such as A=2, B=3, and A/B=7?  Again, it
> is alot like the lighting:  I don't care about CFM/person or CFM/sq-ft.  I
> have the CFM, the number of people, and the square feet for a zone.  How
> can
> avoid the hundreds of questions?
>     Any ideas?  How can I tell what fields eQuest will actually use in
> doing
> the energy modeling so that I can ignore the rest?
>
> Lars Fetzek, EI
> Phoenix Engineering Group
> Tampa, Florida
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