Analysis Period error in Psych chart

grasshopper ladybug-legacy
1

Hi

I’ve been having problems with using the Analysis period component when I use the psychrometric chart tool for plotting the hour point in Fahrenheit.

I am trying to plot out hourly point for each seasons of the year and it shows up exactly as I want it in SI units but as soon as I convert it to IP units, the points are plotted way above the psych chart curves.

I attached the SI version that works and the end results along with the IP version that shows the error.

Thanks,

Ken

Seasons_Psych_Chart_SI.gh (495 KB)
Psych_Chart_IP_Units_Analysis period.gh (432 KB)

2

Hey can anyone help me try to fix this?

3

Hi Ken,

I ran into the same issue. My workaround is to only use °C instead of °F for my drybulb input. Doesn’t fix the bug, but it appears to show the correct info.