Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
why does in oconv the dc_sky. rad is duplicated?
It should only be there once, but there is no negative effect of duplicating it. Rays going to infinity will only encounter one source, even if two are present.
does this information conflict with one in dc_sky.rad?
The content of the sky does not matter for rcontrib calculations. It only needs to be there as a source so that rcontrib can test whether or not it is seen by (i.e. contributes to) each ray.
if i want to add more sky patches in gendaymtx (-m 4) do I need to change rcontrib trengeza.cal?
Yes. You would instead use reinhart.cal with -e MF:4. If you have a separately defined ground surface and want to test for that as well, then use reinhartb.cal and include separate arguments for that (e.g. -b 0 -bn 1 -m ground) before specifying any arguments related to the sky.
