[bldg-sim] IWEC Weather data and DOE2.2

[Tianzhen Hong]

I noticed that the latest release of EnergyPlus weather tool cannot
convert epw file to TMY2 any more. Not sure why the feature is removed!
 
Tianzhen

-----Original Message-----
From: bldg-sim at gard.com [mailto:bldg-sim at gard.com] On Behalf Of Joe
Huang
Sent: Friday, January 20, 2006 5:00 PM
To: bldg-sim at gard.com
Subject: [bldg-sim] IWEC Weather data and DOE2.2


There seems to be some confusion on the format of the IWEC files that
were developed by ASHRAE about 5 years ago, and available through the
ASHRAE Bookstore. Those files are in a text format that's 99% identical
to the format used by NREL for their TMY2 weather files.  EPW is the
weather file format used by EnergyPlus, akin to the *.BIN binary format
used by DOE-2.  What you are doing is taking the EPW version of a WEC
weather file, probably from DOE's EnergyPlus Web site, reconverting it
to TMY2, and then packing it for DOE-2 using the doewth weather
processor program (?).  You should be aware that DOE-2 weather files
contain weather parameters in integer IP units, and so loses some
precison compared to the original IWEC weather source file.
 
Joe Huang
LBNL
also former chair of ASHRAE TC 4.2 on Climatic Information
 
----- Original Message ----- 

From: Alpana Jain <mailto:ajain at setty.com>  
To: bldg-sim at gard.com 
Sent: Friday, January 20, 2006 9:48 AM
Subject: [bldg-sim] IWEC Weather data and DOE2.2


Hi

Yes, I have done this in the recent past. I converted the .epw file for
Ecuador into tmy2 file and then used the weather utility from DOE2 to
convert to .bin format. It worked ok.

If you want I could provide you with the .bin file for quito, Ecuador.

 

Alpana

 


  _____  


Alpana Jain Kapoor, LEED AP

Setty & Associates, Ltd

10340 Democracy Lane, Suite #304

Fairfax, VA - 22030

703.691.2115 ext.19 (work)

703.691.8084 (fax)

Mail:  <mailto:ajain at setty.com> ajain at setty.com

Web:  <http://www.setty.com/> www.setty.com

"I get up, I walk, I fall down; meanwhile I keep dancing"


  _____  


 


  _____  


From: bldg-sim at gard.com [mailto:bldg-sim at gard.com] On Behalf Of Sean
Henry
Sent: Friday, January 20, 2006 12:14 PM
To: bldg-sim at gard.com
Subject: [bldg-sim] IWEC Weather data and DOE2.2

 

Dear Energy Modelers:

Has anyone successfully applied IWEC weather data for DOE 2.2 or eQuest
energy simulations?

I am starting a project in Ecuador and I'm considering obtaining IWEC
data for use with the DOE2 weather utility to convert over to .bin
format.

Any observations or pointers in doing this would be appreciated.

Best Regards,

S.P. Henry

 
 
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