Mathematical models of dependence of surface temperatures of exposed metal plates on environmental parameters

摘要: AbstractThe present paper sets out the mathematical models that control surface temperature of metal plates during atmospheric exposure. Heat transfer can be modelled by a series heat coefficients for different thermal processes, i.e. conduction, natural convection, forced radiative losses to sky, or from ground, incoming solar radiation, and evaporation condensation. The model is applied predict near horizontal galvanised steel plates. Undercooling plate relative ambient air, i.e.the extent which falls below its surroundings, calculated both clear cloudy nights, with without slight breeze. It found breezes clouds significantly decrease undercooling. differences between air after sunrise are also calculated. prime factors controlling p...