Heat Transfer Processes in Double-emulsion Systems

摘要

The authors present a theoretical analysis of the heat transfer processes problem for globules and liquid membrane in a double-emulsion system. Volume-averaging transport equations are derived for globules, membrane, and continuous phase, which results in the three-equation average model to determine the temperatures in globules, membrane, and external phase with heat source diffusion and convection effects. With these equations, two average models were derived: (a) the two-equation model, where globules and membrane are characterized by a single temperature and thermodynamic nonequilibrium with the external phase; and (b) one equation model (thermodynamic equilibrium) where the double-emulsion system (globules, liquid membrane, and external phase) has a single temperature. The terms in the mathematical model responsible of the thermodynamic nonequilibrium effects were established.