[Equest-users] Hours outside Thrl-Range

[David Dowling]

Thank you for pointing this section out, it explains this concept very
clearly and I have attached it for reference if anyone else is having
the same problem.  

 

This is explained on page 108 of 135 from the "Detailed Simulation
Reports Summery" under the tutorials and reference menu under help:

 

"HOURS OUTSIDE THROTTLING RANGE:

The denominator used for this % calculation is the # of hours at least
one system is running. For example, a bldg with two fan systems running
12 hrs/day & 7 days/wk with identical start/stop hours will yield 4380
total fan hrs (8760 / 2). If the start & stop times for one of these fan
schedules is shifted one hour (+/- one hour but still 4380 hrs on each
fan), the new total fan hrs = 4745 (4380 + 365). Total fan hours are
reported on SS-E as Hours Fans ON' (includes night cycle control hours,
if any).

 

To calculate the total number of hours outside the throttling range,
multiply the percentage reported here by the 'Hours Fans ON' reported on
SS-E.

 

IMPORTANT NOTE:

Any hours outside throttling range that occur during night cycle control
hours are included in the total hours outside throttling range implied
in the percentage above. Any hours outside throttling range that occur
during night venting hours or during natural ventilation hours are
excluded.

 

To investigate any hours outside the throttling range, see SS-R, then
SS-F, and SS-O to isolate the system & zone (SS-R), time of year (SS-F),
and time of day (SS-O) the control problems occur. In eQUEST's Detailed
Interface, see also the Air-Side Summary report."

 

 

 

 

David Dowling

Mechanical Designer

WEST PLAINS ENGINEERING, INC.

1750 Rand Road

Rapid City, SD  57702

Phone: (605) 348-7455  Fax: (605) 348-9445

david.dowling at westplainsengineering.com

www.westplainsengineering.com <http://www.westplainsengineering.com/> 

 

 

________________________________

From: Marlin Addison [mailto:marlin.addison at gmail.com] 
Sent: Wednesday, May 27, 2009 2:26 PM
To: David Dowling
Subject: RE: [Equest-users] Hours outside Thrl-Range

 

David,

In eQUEST v3.63, see the 'Detailed Simulation Reports Summary' (accessed
via right click at any input field in the Detailed Interface or via the
Help menu... select 'Tutorials and Reference'). In the 'Detailed
Simulation Reports Summary', see the annotations at the BEPU and SS-E
reports regarding hours outside throttling range. See if this doesn't
answer your question. Also, new columns have been added (at the far
right) to the '- parms.csv' file (produced any time a project includes
EEM runs or parametric runs) that report the total number of hours. 

Please let me now if this answers your question and post your findings
back to the whole group. 

Thanks.

Marlin Addison

 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of David
Dowling
Sent: Wednesday, May 27, 2009 12:58 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Hours outside Thrl-Range

 

Does any one know how the "PERCENT OF HOURS ANY SYSTEM ZONE OUTSIDE OF
THROTTLING RANGE" from detailed output BEPS is calculated?  I am
assuming it is the maximum total number of ours any given system zone is
not within the throttling range divided by 8760.  If this is true, why
can't I seem to find the total number of hours from any of the reports
to give me this percentage?  Any information concerning this is greatly
appreciated.

 



David Dowling

Mechanical Designer

WEST PLAINS ENGINEERING, INC.

1750 Rand Road

Rapid City, SD  57702

Phone: (605) 348-7455  Fax: (605) 348-9445

david.dowling at westplainsengineering.com

www.westplainsengineering.com <http://www.westplainsengineering.com/> 

 

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20090527/423b5df1/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 4427 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20090527/423b5df1/attachment-0002.jpeg>