[Equest-users] Data Entry

[Vikram Sami]

Lars,

 

I'm intrigued by this - I've never had to input photometric data. What
exactly was it asking you for?

 

With regards to your second question, you typically specify only one
(either cfm/person or cfm.ft2 or total cfm).  If you have issues with
any of these commands try right clicking and going to either topic help,
or item help for more specific help. eQUEST has pretty good help files.
For instance when you go to item help under the Outside airflow, you get
the text below:

 

OUTSIDE-AIR-FLOW

The minimum flow rate of outside ventilation air for the zone.
Alternatively, or additionally, outside air flow rate may be specified
by the keywords OA-FLOW/PER and OA-CHANGES (or by
SYSTEM:MIN-OUTSIDE-AIR). The program calculates outside air flow rate
based on each entry and normally uses the larger value except if it sees
data entry for OUTSIDE-AIR-FLOW, which overrides other values. Note that
specifying outside ventilation air at the zone level takes precedence
over specifying it at the system level. Although the specified
quantities may be modified by the program for the sake of consistency,
the flow of outside ventilation air is an uninterrupted flow as long as
the fans are operating. The outside ventilation air quantity is not
determined by the design space heating or cooling demands except when an
economizer is specified. Use either OUTSIDE-AIR-FLOW or OA-FLOW/PER or
OA-CHANGES.

Hope this helps

 

 

Vikram Sami, LEED AP 
Direct Phone 404-253-1466 | Direct Fax 404-253-1366 

LORD, AECK & SARGENT ARCHITECTURE



 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Lars
Fetzek
Sent: Thursday, August 06, 2009 3:47 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Data Entry

 

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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