<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.5726" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Dear all,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am a new user in TRNSYS and I want to input
weather data measured on site. Since i am interested both in solar
radiation and ambient temperature I use the type 109 user
format to process the data. This weather data is on one minute step
and for one day, and I therefore indicated a value of 0.01667h as time
step in the data file header formulated for type 109. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The simulation does not work for such a timestep
while it works if I increase the value to 0.5h or more. The list
file indicates that the limit number of iteration is exceeded, and these
iterations seem to occur because the value given in the data for total
radiation is zero. </FONT><FONT face=Arial size=2>However, the start time is set
in the control cards at 1176h, which is 00h00 on the 18th of february, so the
radiation processor should take into account that it is night.
two measurements are provided for radiation processing: the normal beam
radiation and the global horizontal radiation. Would it be more
convenient to use the two compenents "free format data reader"
and "radiation processor" instead of the unic "free format weather data
reader" ?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have also tried to look in the source code to
understand better but I do not speak Fortran-ish that much so if anybody has an
idea of where could be the bug, I would be delighted to get some
help.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thank you</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Guillaume Berson</FONT></DIV></BODY></HTML>