Wet-Bulb Globe Temperature

[blazess556]

Is there a way to calculate “Wet Bulb Globe Temperature” using existing variables such as Temperature & humidity?

I know one term in the equation is the mean radiant temperature which is temperature measured inside a 6 inch diameter ball that is painted dark black.

[Mallow]

Is there a way to calculate “Wet Bulb Globe Temperature” using existing variables such as Temperature & humidity?

I know one term in the equation is the mean radiant temperature which is temperature measured inside a 6 inch diameter ball that is painted dark black.

http://en.wikipedia....obe_Temperature

You can get the "Natural Wet Bulb Temperature" from temperature and humidity/dewpoint with a chart like this (or find your own):

http://www.fhs.d211....ve humidity.bmp

Not sure how you'd get the Globe Thermometer Temperature. There may be a formula/approximation/chart to get it from solar radiation, but it's probably easier to just measure it with a black-globe thermometer. If this isn't one of the "existing variables" you were talking about, then the short answer would be--no.

[aslkahuna]

You need that Black Globe temperature in order to calculate WBGT-we used to do that all of the time at FHU but it's been many years since I last did so.

Steve