How to calculate water evaporation loss in a hot tyre surface
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Pevapo. = (25+19Vw) x S x (X - X') x Lv x t/1000
with:
Pevapo: evaporation losses (kWh)
25 + 19Vv: empirical formula giving the ratio of the heat exchange coefficient hconv by convection between the water and air (W / m²K) on the Cair specific heat of air (= 0,277Wh / kg of air.K)
Vw: wind speed (m / s)
S: the pool surface (m²)
X: specific humidity of saturated air at the temperature of the water (g water / kg air)
X ': specific humidity of ambient air at the temperature of the water (g water / kg air)
Lv: enthalpy (or latent heat) of vaporization of water: 0.625 Wh / g
t: time without solar cover (in hours)
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