[esp-r] Re: Fwd: Re: ... climate files ...

[Ferguson, Alex]

Hi Matt,
 
ESP-r uses an unusual convention when expressing longitude; it measuers
it east or west from the nearerst 15-degree meridian (that is,. 15W,
30W, or in your case, 90 W). 
 
- Alex 
 
Alex Ferguson
Sustainable Buildings and Communities (Housing Group)
CanmetENERGY
Natural Resources Canada
P:+1 613 995 3294
F:+1 613 996 9909
Alex.Ferguson at NRCan-RNCan.gc.ca



________________________________

From: esp-r-bounces at lists.strath.ac.uk
[mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Matt Koch
Sent: February 9, 2009 23:49
To: esp-r at lists.strath.ac.uk
Cc: Jon Hand (clcv10)
Subject: [esp-r] Re: Fwd: Re: ... climate files ...


Hi Everybody,

thanks for the fast and comprehensive help! I found the TMY3 files, too,
and they convert (except for the EOF "annoyance", but I guess that is no
longer an issue). However, for example the San Antonio International
Airport TMY3 EPW file has the proper longitude of -98.47 (- for W, I
presume) in it, but after the clm epw2bin conversion in ESP-r, it is
shown as 8.5 W, i.e. something like 90 - 98.47 rounded up. If I count
from Greenwich, it should clearly be 98.47 W. What am I missing?

Thanks and Regards,

Matt Koch, Ph.D., P.E.
Science & Technology Consultants (SciTeX)
www.scitex.us
mattkoch at scitex.us
(830)-446-1839



Jon Hand (clcv10) wrote: 


	Acording to Dru Crawley the EPW files are TMY3.  -Jon Hand
	

	Begin forwarded message:

	From: "Crawley, Drury" <Drury.Crawley at ee.doe.gov>
	Date: 9 February 2009 13:13:19 GMT
	To: Jon Hand <jon at esru.strath.ac.uk>
	Subject: RE: [esp-r] Re: ... climate files ...

	Jon,

	The TMY3 files are in EPW format on our web site.  We left the
TMY2
	files since many people were still using them.

	Dru

	-----Original Message-----
	From: esp-r-bounces at lists.strath.ac.uk
	[mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Jon Hand
	Sent: Monday, February 09, 2009 4:40 AM
	To: mattkoch at scitex.us; esp-r at lists.strath.ac.uk
	Subject: [esp-r] Re: ... climate files ...


	A number of questions about climate files....


	::been looking into ESP-r for a number of years, decided to give
it a
	real ::try now. First hurdle is climate file conversion. Found a
bunch
	of EPW ::files for EnergyPlus, trying to convert them to ESP-r
binary
	using the ::following command:

	::clm -mode text -file USA_TX_San.Antonio_TMY2 -act epw2bin
silent
	::USA_TX_San.Antonio_TMY2.epw

	::The file USA_TX_San.Antonio_TMY2 does get created, and I seem
to be
	able ::to use it in esp-r - for example, I can display the dry
bulb
	temperature ::and relative humidity in a graph. However, I am
worried
	the "EOF" error ::in the above output somehow indicates a
corrupted
	file ::USA_TX_San.Antonio_TMY2, possibly leading to wrong
results. Any
	clue ::what that error is all about (I get this no matter
whether LF or
	CRLF ::terminate the lines in the EPW file)?

	If you can graph the data the read was sucessful.  The EOF is
literally
	that the scanning got to the end of the file it was importing.

	::Secondly, the above EPW file has rather old data, and the
longitude in
	::it appears to be wrong. So, I found a bunch of newer TWY3
files, but
	::they are in CSV format (722530TY.csv for San Antonio).
However, I do
	not ::know how to turn a CSVfile into something usable by ESP-r.
Any
	ideas?

	We have not yet tried to scan the TWY3 files.  But the
Department of
	Energy did recently update a number of their EPW files with
newer
	sources so it could be that the San Antonio file was not the
newest one
	available.  It should not be rocket-science to scan the TWY3
file, but
	it will take writing some code to do the conversion and some
testing
	that the data read is correct.  Perhaps someone in the ESP-r
community
	will take this on as a project.

	::Thirdly, is there any reference manual that documents the
command line
	::options of the various modules, such as the ones above for
clm? It was
	::by pure chance that I happened across the above command.

	Start any tool with the command option -help.  E.g.  clm -help

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