12.7.1. Weather variables
|
Variable
|
Description
|
Metric unit
|
IP unit
|
|
ws
|
wind speed
|
m/s
|
ft/s
|
|
wd
|
wind direction
|
degrees clockwise from north
|
degrees clockwise from north
|
|
to
|
outside air temperature
|
°C
|
°F
|
|
twb
|
outside wet bulb temperature
|
°C
|
°F
|
|
go
|
outside air moisture content
|
kg/kg
|
lb/lb
|
|
rho
|
outside air relative humidity
|
%
|
%
|
|
igh
|
global horizontal solar flux
|
W/m2
|
Btu/(h·ft2)
|
|
ifh
|
diffuse horizontal solar flux
|
W/m2
|
Btu/(h·ft2)
|
|
idn
|
direct normal solar flux
|
W/m2
|
Btu/(h·ft2)
|
|
toav24
|
mean outside air temperature over previous 24 hours
|
°C
|
°F
|
Note that toav24 is not available from the drop-down list of variables and must be typed in directly.
