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Re: [EnergyPlus_Support] Processing multiple years in epw
Yes, and that's been available for a long time with the
RunPeriod "repeat" field.
At 04:51 AM 11/7/2014, Robin Curtis curtis@xxxxxxxxxxxxxxxx
[EnergyPlus_Support] wrote:
One case where you need to run
for more than a year is when you use closed loop ground source heat pump
systems?.You need to check that they are sustainable over a period of
years - say 20 - 50. You just use the same weather tape repeatedly.
Regards
Robin Curtis
Robin
Curtis
GeoScience Limited
Tel: +44 (0) 1326 211070 Fax: +44
(0) 1326 212754 Web:
www.geoscience.co.uk
Registered Office: Falmouth Business Park, Bickland Water Rd,
Falmouth, TR11 4SZ, UK
On 7 Nov 2014, at 11:28, Arun
arynum@xxxxxxxxxxx
[EnergyPlus_Support]
<
EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Hi, thank you for the post. the idea of simulating for more than a year
(8760 hours) for the given energy system is really interesting. Just
wondering, whether, we as a building owner/ regulator/ simulator,
requires that data/ information. Typically, a year covers most weather
patterns and climate changes. This leads to another prediction how to
include next year weather data in .epw file given the vast uncertainties
due to possible "seasonal changes" and so on... Is there any
such provision in EP to include second year simulation period?
Regards,
Arun Bhandari
eCUBE solution
Bangalore, India
Sent from my iPhone
On 07-Nov-2014, at 10:22 AM,
"'jeannieboef@xxxxxxxxx'
jeannieboef@xxxxxxxxx
[EnergyPlus_Support]"
<
EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
I recently accidently entered a start date "older" than the end
date. E+ started with the start date, ran to the end of the year,
continued flawlessly from January untill it stopped at the end date. It
used a regular weatherfile.
And after my innial confussion, there came an exclamation :-)
Mit freundlichen Grüßen- Sent from my iPhone (excuse the
brevity)
i. A.
Jean Marais
b.i.g. bechtold
Tel. +49 30 6706662-23
On 06.11.2014, at 19:07,
"Linda Lawrie
linda@xxxxxxxxxxxxxx
[EnergyPlus_Support]"
<
EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
I cannot parse what you are saying, Ned. I read it over
twice.
There are two ways that EnergyPlus can run multiple years -- with the
RunPeriod object and the repeat field.
Also we implemented something about actual year -- I can't remember if
that applies to the RunPeriod, the CustomRange or both.
The CustomRange expects weather files that are hand crafted to have
actual dates in the date fields and in the header (so it knows if the
selection is on the weather file or not). And they are merged
together in one large file.
I can likewise send you the files I just sent Jim that implement
same.
Linda
At 09:02 AM 11/6/2014, 'Edward G. Lyon'
eglyon@xxxxxxx
[EnergyPlus_Support] wrote:
I think what is not very clear in the documentation is if the custom
weather file is the .csv file format (created from the weather generator
opening a .epw or generating form some other source) or the .epw format
with more than a year of data actual date order. I suspect the
latter?
Ned Lyon, P.E. (MA, WV)
Staff Consultant
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
617.285.2162 mobile
781.907.9009 fax
www.sgh.com
From:
EnergyPlus_Support@xxxxxxxxxxxxxxx [
mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Thursday, November 06, 2014 10:49 AM
To:
EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Processing multiple years in
epw
Jim is right, of course - as usual.
I can send you both a file that does a custom range and a weather
file.
You will need to hand create the weather file (appending the 2nd year
onto the first or similar).
I would send it to you privately.
At 04:44 AM 11/6/2014,
Jim Dirkes
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support] wrote:
Marko,
The purpose of the CustomRange object is for >365 day weather years,
as I understand it. I think this object became available about 2
years ago. I was one of those who requested it so that it would be
more practical to model existing buildings where the electricity and gas
billing periods extended for longer than one calendar year. As it
happens, I have not tested it yet, but expect to do so soon.
Â
On Thu, Nov 6, 2014 at
5:38 AM,
marko.ignjatovic1980@xxxxxxxxx [EnergyPlus_Support]
<
EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Â
Hi all,
I have problem running simulation for two consecutive years, ie.
processing raw weather data in epw. I have raw weather data starting from
October 15th 2013 until October 31st 2014. Can I create extended epw
containing this data period (creating epw for 8760 values is no problem)?
I read I/O documentation and found that RunPeriod:CustomRange can do the
trick but I am not sure. Any comment is more than welcome
MarkoÂ
--
Â
James V Dirkes II, PE, BEMP, LEED AP
The Building
Performance Team
1631 Acacia Drive, Grand Rapids, MI 49504
(M) 616 450 8653
The more one does what is good, the freer one becomes. There is no true
freedom except in the service of what is good and just.
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Posted by: Linda Lawrie <linda@xxxxxxxxxxxxxx>
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