Convert Units of Radiation Analysis Legend from kWH/m2 to BTU/ft2

grasshopper ladybug-legacy
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1

Hello Forum,

Is there a way to change the legend measurement of the Solar Radiation Analysis from kWh/m2 to BTUs/ft2?


I’m sure there is, I just can’t figure out the steps involved.

Thanks in advance,

Reid


2

Hi Reid,

You need to 1. convert Radiation results, then 2. Use Create legend component.

Kind Regards,

OMD.

3

Thanks for posting, Omid, and you are on the right track but, by default the WH2BTU component just converts the energy units (kilowatts to kilo-BTUs). Not the flux (Energy per unit area). So you just need one more step in order to convert the values to kBTU/ft2. Also, I might recommend using the recolor mesh so that you can more easily set the legend bounds bu the create legend component is a fine solution as well.

I should also note that the WH2BTU component is smart enough to convert EUI (also energy per unit area) for energy model results as long as there’s a Ladybug header on the data. But, by default, it’s only doing an energy unit conversion.

4

Thanks for the response. That worked great!

That EUI conversion also sounds interesting, I’ll have to dig into that sometime.