Free convection heat transfer with surface radiation from infrared suppression system and estimation of cooling time

Radiant energy exchange through participating media composed of arbitrary concentrations of H2O, CO2, and CO

“…The shape and width of the absorption bands vary with temperature and pressure, but the magnitude of the absorptivity also varies with the thickness of the gas layer. Therefore, absorptivity values without specified thickness and pressure are meaningless 32 …”

“…Therefore, absorptivity values without specified thickness and pressure are meaningless. 32 The emission and absorption in gases do not occur continuously over the entire spectrum, being significant in several more or less wide bands of relatively strong absorption wavelength, tending to zero in other adjacent bands, for this reason, it is extremely complex the development of an analytical method for prediction or estimation.…”

Experimental Correlation of Natural Convection in Low Rayleigh Atmospheres for Vertical Plates and Comparison between Cfd and Lumped Parameter Analysis

“…Focusing the analysis in the pressure region where these systems should operate, available correlations from different authors (for vertical [26][27][28][29] and horizontal [30][31][32][33][34] plates) unfortunately provide very different results increasing the uncertainties of the model. Additional studies for vertical cylinders or vertical walls natural convection problems can be found in the following references [35][36][37][38][39]. In order to analyze the problem from a simplified perspective, in this work, the thermal behavior of a small heated vertical plate has been studied under the conditions to be found around 30 km of altitude in the Earth atmosphere.…”