Radiation analysis without epw weather file

I would like to conduct a radiation analysis using LadyBug. To do that I must input a sky matrix. To generate a sky matrix I need an .Epw weather file. I do not have a .epw file for my location but I do have the longitude/latitude location and I also have an hour by hour direct solar radiation values given in W/m^2. So I can generate a solar path and I know the direct radiation. I feel like this should be enough data to carry out a radiation analysis but I can't figure out how to do this be I am unsure how to generate a sky matrix from his data. I was thinking maybe I can create my own custom sky matrix? Or generate an .epw file (Although I have no clue on how to do either of these)?

Given the data that I have (direct solar radiation and location) how can I use the radiation analysis tool ?

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Replies to This Discussion

Permalink Reply by Sarith Subramaniam on March 17, 2017 at 2:55pm

Hi Chris,

If possible, can you check if my replacement hack for radiation was correct? It just might be that I missed out on something there... The gh file containing that component can be found here: https://www.dropbox.com/sh/t2o10lilig7rn9u/AAC7MYwvxdSrGRyxunmMJC4-....

The initial epw data that I used was for state College and the replacement weather data was taken from weatherFile.csv (which Mike posted here).

Sarith

Permalink Reply by Chris Mackey on March 23, 2017 at 7:46pm

Sarith,

Sorry for the late reply. I tried your file and everything checks out well. The sky looks as I would expect it:

The fact that the csv data has the same length of day for the whole year means that we get some weirdness around the eastern horizon (dark patches in the summer). Still, everything seems good with your code.

-Chris

Permalink Reply by Sarith Subramaniam on March 24, 2017 at 11:05am

Chris,

Thanks. As you would have realized there wasn't much "magic" in that code anyway.

Sarith