The "extended performance" data published by manufacturers is apparently linear. In the back of Manual S they show a linear equation to recreate performance data tables.
When you plot the actual published performance data on a graph, it is also - apparently - linear.
However DuPont published...
Manual J publishes design dry and wet bulb data for each city.
So, for instance: Phoenix, AZ would be 107 db, and 71 wb for outdoor air.
However, I want to calculate what the wet bulb would be if I took the published conditions and changed the dry bulb to indoor air temperature of, for...
In a 3 phase wye configuration of loads (let's say electric resistance heaters since I have a photo of one of those)...
http://members.cox.net/rifter1/images/3pshDiag.jpg
voltage is 480V. now, just the way 3 phase works, the potential at the centerpoint in the diagram is zero to ground...
