Venus revolves or orbits around the Sun once every 0.615 Earth years, or once every 224.7 Earth days. Venus travels at an average speed of 78,341 miles per hour or 126,077 kilometers per hour in its orbit around the Sun.
5 Sol-Air Temperature Sol-air temperature (Tsol) is the fictitious temperature of the outdoor air which, in the absence of radiative exchanges on the outer surface of the roof or wall, would give the same rate of heat transfer (Q) through the wall or roof as the actual combined heat transfer mechanism between the sun, the surface of the roof or wall, the outdoor air and the surroundings.
The sol-air temperature is defined as /sa = /oa q'- R(~Ix - ~I1) (2) where R (in m2KW-1) is the thermal resistance of the external surface/air interface, and e are respectively the absorptivity for solar radiation and emissivity for infrared radiation of the considered wall, toa (in ) is the outdoor air temperature, I~ (in Win-2) is the intensity of direct plus diffuse solar radiation on the outer surface of the wall, Il (in W m- 2) is the intensity of long-wave radiation from a thermally ...