the highest registered air temperature was recorded on earth at iran.
the highest registered air temperature was recorded on earth at iran.
where was the highest registered air temperature recorded on earth?
iran
section::::measurements.









































section::::measurements.:air and ground temperature.









































the standard measuring conditions for temperature are in the air, 1.5 meters above the ground, and shielded from direct sunlight. according to the world meteorological organization (wmo), the highest registered air temperature on earth was in furnace creek ranch, california, located in the death valley desert in the united states, on july 10, 1913. the validity of this record is challenged
highest temperature recorded on earth
plenum supply air temperature rise is the increase of the conditioned air due to convective heat gain as it travels through the underfloor supply plenum from the plenum inlet to the floor diffusers. this phenomenon is also named thermal decay. plenum air temperature rise is caused by cool supply air coming into contact with warmer than air concrete slab and raised floor. according to a modeling study, air temperature rise can be quite significant (as much as 5 °c or 9 °f) and subsequently, compared to an idealized simulated ufad case with no air temperature rise, elevated diffuser air temperatures can lead to higher supply airflow rate and increased fan and chiller energy consumption. the same study found that air temperature rise in summer is higher than in winter and it also depends on the climate. the ground floor with a slab on grade has less temperature rise compared to middle and top floors, and an increase of the supply air temperature causes a decrease in the temperature rise. the temperature rise is not significantly affected by the perimeter zone orientation, the internal heat gain and the window-to-wall ratio. supply plenum air temperature rise, thus, has implications on the energy saving potential of ufad systems and their ability to meet cooling requirements with supply temperatures above those of conventional overhead systems. current research suggests that both energy and thermal performance can be improved in ufad systems by ducting air to perimeter zones where loads tend to be the greatest. critics suggest however that such underfloor ducting reduces the benefit of having a low-pressure plenum space, as well as adding design and installation complications when fitting ducts between floor tile pedestals.
underfloor air distribution