Dear Trnsys
Users,
I’m doing some
experimental validation of the Type 45 code with a solar collector manufactured
in Brazil. The year 2004 is a leap year, with 366 days. The
TRNSYS solar radiation processor calculates the solar declination angle based on
a year with 365 days. My question is, should I use the simulation start and
stop time according to a “normal year” or a “leap
year”? For example, June 29th is the day number 180 of a
normal year and the day 181 of a leap year. What I want to assure is that the
declination angle calculated by Trnsys corresponds to the position of the sun
during the experiment. The solar declination angle is calculated, I guess, once
per day. If that is true, a difference from one day to the next would be in the
order of 0.01 degrees. It probably won’t make a difference at all. Please
tell me if otherwise!
Regards,
Juan