The present status of plasma processes involving heat and mass transfer is surveyed, with particular reference to the proceses of vaporization, condensation and chemical reaction. Some of the more important plasma techniques are discussed with emphasis placed on means for maximising the overall thermal efficiency of the mass transfer process, and for controlling the properties of the condensed ...

In the Thernal Engineering Division of the Technical University of Szczecin research has been carried oat for yesr3 on saturated diving. Аs part of this research, the problem of heat exchange during forced flow under hyperbaric conditions has been taken up. Research work concentrated on heat exchange during forced air flow through a duct of toroidal cross-section. Research included the flow of ...

In this paper the heat transfer characteristics of a two-phase closed thermosyphon over a wide range of heat transfer rates, system pressure, aspect ratios and filling ratios were studied. The experiments focused on the boiling and condensation heat transfer characteristics of the thermosyphon. The experimental boiling and condensation heat transfer coefficients inside the thermosyphon were com...

An experimental and theoretical energy and exergy analysis was conducted for a cylindrical cavity receiver employed in a parabolic dish collector. Based on simultaneous energy and exergy analysis, the receiver average wall temperature and overall heat transfer coefficient were determined. A simplified Nusselt number for Heat Transfer Fluid (HTF) through the receiver as a function of Reynolds an...

The condensation heat transfer characteristics of nonazeotropic mixtures R1234yf and R32 (mass fractions of 0.52:0.48 and 0.77:0.23, respectively) inside a horizontal smooth tube (inner diameter 4 mm) were experimentally studied at mass fluxes ranging from 100 to 300 kg/m s. A prediction model for the forced convective condensation heat transfer characteristics of nonazeotropic refrigerant mixt...