[BLDG-SIM] EPW file average hourly statistics for wet bulb temperatures
Jeff Hirsch
Jeff.Hirsch at DOE2.com
Fri Aug 25 14:45:39 PDT 2006
You can use the eQUEST weather processor (eQ_WthProc)
http://doe2.com/index_Wth.html
to read a EPW file and convert to DOE-2 compatible file (that
you can discard if not useful) but then you will have csv files
(orig and final - with doe-2 conversions) with the variables you
want (including headers) on the "final" csv if you uncheck the
"clear Interim Results on Exit" checkbox on the setup tab.
Here is an example original csv partial
DryBulbT
DewPtT
Sol-GlobHor
WindSpd
WindDir
Sol-DirNorm
Month
Day
Hour
F
F
w/m²
mph
degrees
w/m²
1
1
1
18.86
2.66
0
2.23
110
0
1
1
2
17.6
5
0
0
0
0
1
1
3
17.06
3.2
0
0.67
0
0
1
1
4
16.34
1.4
0
1.56
0
0
1
1
5
15.8
-0.4
0
2.23
360
0
Here is the example correcponding final
DryBulbT WetBulbT DewPtT RelHum HumRatio Sol-GlobHor Sol-DirNorm WindSpd WindDir
Month Day Hour F F F % lbmw/lbma w/m2 w/m2 mph degrees
1 1 1 18.86 15.21 2.66 44.47 0.000907 0 0 2 110
1 1 2 17.6 14.68 5 53.33 0.001024 0 0 0 0
1 1 3 17.06 13.99 3.2 49.9 0.000933 0 0 1 0
1 1 4 16.34 13.17 1.4 47.08 0.00085 0 0 2 0
1 1 5 15.8 12.51 -0.4 44 0.000773 0 0 2 360
---
Jeff Hirsch
James J. Hirsch & Associates
Building Performance Analysis Software & Consulting
12185 Presilla Road
Camarillo, CA 93012-9243 USA
phone: (805) 553-9000
fax: (805) 532-2401
email: Jeff.Hirsch at DOE2.com
web: http://DOE2.com
----- Original Message -----
From: "Michael J. Witte" <mjwitte at gard.com>
To: <BLDG-SIM at GARD.COM>
Cc: <BLDG-SIM at gard.com>
Sent: Friday, August 25, 2006 9:56 AM
Subject: [BLDG-SIM] [EnergyPlus_Support] Average hourly statistics for wet bulb temperatures
My mistake! You are correct that the epw-->csv conversion will only give DB,
RH, and Dew Point. The alternate route is to run an annual simulation with
EnergyPlus using the weather file of interest, select "Outdoor Wet Bulb" as an
hourly REPORT VARIABLE, and then use the csv output file to generate
statistics. One could even generate the averages with EnergyPlus by applying
schedules to the report variable and reporting the scheduled value as monthly
averages.
Mike
On 25 Aug 2006 at 6:20, Gerald Pde wrote:
> Energyplus weather files do not have wet-bulb
> temperatures, do they? I had the impression they only
> have DB , RH and Dew Point. You might have to manually
> convert to wetbulb which might be quite an exercise.
> Is there a simpler way of computing the data below?
>
> Thanks
> Gerald
>
> --- "Michael J. Witte" <mjwitte at gard.com> wrote:
>
> > If you are looking for long-term averages, you can
> > download the EnergyPlus IWEC
> > file for Brisbane (www.energyplus.gov --> Weather
> > Data) and use the EnergyPlus
> > weather converter to convert it from epw format to a
> > csv file which includes
> > column headings and can be opened in a spreadsheet
> > program. Then you can
> > compute the averages from there.
> >
> > Mike
> >
> >
> > On 24 Aug 2006 at 17:55, Ashfaque Ahmed Chowdhury
> > wrote:
> >
> > > Hello All,
> > >
> > > I require average hourly statistics (Jan-Dec) for
> > wet bulb temperatures (°C
> > > or °F) of Brisbane, Australia. I tried to find
> > using Bureau of Meteorology,
> > > Australia website.But can't find any suitable
> > data. Can anyone give me any
> > > link to find it out?
> > >
> > > Thanks in advanced.
> > >
> > >
> > >
> > > --Ashfaque
> > >
> > > CQU, Australia
> > >
> > > --
> > >
> >
> ------------------------------------------------------------------------------
> > >
> >
> ------------------------------------------------------------------------------
> > >
> >
> ------------------------------------------------------
> > > This email and any files transmitted with it are
> > confidential and intended
> > > solely for the use of the individual or entity to
> > whom they are addressed.
> > > It may also be legally privileged. If you are not
> > the named addressee, you
> > > should not copy, forward, disclose or use any part
> > of it. If you have
> > > received this message in error, please delete it
> > and all copies from your
> > > system and notify the sender immediately by return
> > e-mail. Internet
> > > communications cannot be guaranteed to be timely,
> > secure, error or
> > > virus-free. The sender does not accept liability
> > for any errors or
> > > omissions.
> > >
> > >
> > > [Non-text portions of this message have been
> > removed]
> > >
> > >
> > >
> > > The primary EnergyPlus web site is found at:
> > > http://www.energyplus.gov
> > >
> > > The group web site is:
> > > http://groups.yahoo.com/group/EnergyPlus_Support/
> > >
> > > Attachments are not allowed -- please post any
> > files to the appropriate folder
> > > in the Files area of the Support Web Site.
> > >
> > > EnergyPlus Documentation is searchable. Open
> > EPlusMainMenu.idf and press the
> > > "search" button.
> > >
> > > Yahoo! Groups Links
> > >
> > > <*> To visit your group on the web, go to:
> > >
> > http://groups.yahoo.com/group/EnergyPlus_Support/
> > >
> > > <*> To unsubscribe from this group, send an email
> > to:
> > > EnergyPlus_Support-unsubscribe at yahoogroups.com
> > >
> > > <*> Your use of Yahoo! Groups is subject to:
> > > http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> ========================================================
> > Michael J. Witte, GARD Analytics, Inc.
> > EnergyPlus Testing and Support
> > EnergyPlus-Support at gard.com
> >
> >
> >
> >
> =====================================================You
> > received this e-mail because you are subscribed
> > to the BLDG-SIM at GARD.COM mailing list. To
> > unsubscribe
> > from this mailing list send a blank message to
> > BLDG-SIM-UNSUBSCRIBE at GARD.COM
> >
> >
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
> ======================================================
> You received this e-mail because you are subscribed
> to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
> from this mailing list send a blank message to
> BLDG-SIM-UNSUBSCRIBE at GARD.COM
>
>
==================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM
======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM at GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE at GARD.COM
More information about the Bldg-sim
mailing list