I’m trying to compute the annual solar radiation on a outdoor surface.
The only way I found to do it was to follow the steps in this post: Modified Three phase Odd radiation levels
The method looks something like:
rfluxmtx -v -n 6 -I+ -ab 12 -ad 10000 -lw 1e-4 -w- < sensors.pts - sky_white.sky material.mat objects.rad > photocells.vmx epw2wea weather.epw weather.wea gendaymtx -m 1 -O1 weather.wea > matrix.smx dctimestep photocells.vmx matrix.smx | rmtxop -fa -c 1 1 1 res.dat
I noticed this method does not involve generating a octree. Do anyone know the reason for that?
Could I replace the rfluxmtx command with:
ocovn -f material.mat objects.rad > model.oct rfluxmtx -v -n 6 -I+ -ab 12 -ad 10000 -lw 1e-4 -w- < sensors.pts - sky_white.sky -i model.oct > photocells.vmx
Would there be be any difference in the result or simulation time between the original command and one including the octree?
The rfluxmtx includes a “-w-” flag. I couldn’t find what it does in the documentation?
The rfluxmtx command also doesn’t include a “-y” flag as in the matrix based documentation is it because the example in the previous post only uses one sensor point?
rmtxop is used to turn the result from dctimestep into W/m2. Is the results point-in-time values so I need to multiply with 3600 to get Wh/m2 or are they the sum of radiation received in that time step, so the result actually is in Wh/m2?