Investigation on condensation in presence of a noncondensable gas for a wide range of Reynolds number

Review of vapor condensation heat and mass transfer in the presence of non-condensable gas

“…Maheshwari et al [115] developed a theoretical model to study the local heat transfer coefficient of condensing vapor in the presence of NCG, where the gas/vapor mixture was flowing downward inside a vertical tube. The model used an annular flow pattern with a liquid film on the tube wall; the gas mixture was modeled using the heat and mass transfer analogy.…”

Effect of void fraction models on the two-phase friction factor of R134a during condensation in vertical downward flow in a smooth tube

“…tube. This diagram was used by several researchers such as Blangetti et al [40] and Maheshwari et al [42] for various refrigerents. The diagram takes into consideration the effect of mass transfer by including a correction factor developed by Bird et al [45] who studied the effect of suction in condensation, : Crw q 1 r ref , where σ w is the surface tension of water, ρ l is the density of the liquid refrigerant, σ ref is the surface tension of the refrigerant, and Γ̇is the liquid flow rate per unit perimeter which is given as:…”

“…(14)- (16) is related to the Nusselt theory. Detailed information is given in references [35], [40][41][42][43][44].…”

Condensation of a hydrocarbon in the presence of a non-condensable gas: Heat and mass transfer

“…Maheshwari et al [15] developed a theoretical approach for studying the local heat transfer coefficient of condensing vapor in the presence of non-condensable gas. Two-phase heat transfer was analyzed using an annular flow pattern with a liquid film at the tube wall and a turbulent flow in the gas/vapor core.…”