Hi, HuJia
I have been following those mails.
What Mr. Ooi wanted to do was to generate a special local weather file which matches the days when he conducted temperature and other measurements on his test building.
He mdified the ODT of the IWEC weather file, with his measured ODT, the matching of the simulated temperatures in the room and the measured values are quite good, when the sun is not shining through the windows.
We will try using the formulae in the weather converter and see what happens.
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: hujia06@xxxxxxxxx
Date: Mon, 1 Feb 2010 15:17:21 -0500
Subject: Re: [EnergyPlus_Support] diffuse solar
Hi, HuJia
I noticed that you are very interested in finding the various fields in the weather file.
My former student Mr. Ooi KB, in a PhD program now, is very interested in findint out how to use:
Global horizontal, HIR, Cloud cover, ODT and RH, to get the Direct Normal and Diffused Horizontal fields in the EPW.
He can get those five sets of data from the Kuching Met. Station for his work in East Malaysia. However, he does not know how to divide the Global into the Direct Normal and Diffused horizontal, which the EPlus use for simulation..
Dr. Li
P.S. for Linda. Do you have any sub-routine in Fortran or any programming language, to generate these two missing fields in EPW. (Direct normal and Diffused Horizontal from Global horizontal, HIR, Cloud cover, ODT and RH)
He passed on the sub-routine from ticket #2013 for me to solve his ground surface temperature calculation.[EnergyPlus #2013]: Basement outside surface temperatures. I am studying it and see whether all the data are available, to run it as a C++ program.
What he really nead is the correct solar radiation level through the windows, so that the simulated and the measured room temperature can match.
He tried measring the DIrect Normal using a Pyranometer. Because the spectrum of this device is wider, the measured value was about 30% higher.
Dr. Li
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