SELECTION OF OPTIMAL INVESTMENT PORTFOLIO IN ORDER TO PROVIDE GEORGIAN ENERGY SAFETY WITHIN THE MEDIUM TERM

D. JAPARIDZE, Z. GACHECHILADZE, T. MAGRADZE
(Georgia)

Anticipated rates of deficit power in autumn-winter period are specified based on comparative analysis of expected medium term parameters of power generation and power demand in Georgia and the ways to reduce the deficit by increasing power generated as a result of putting the power plants into the operation within the established terms defined under the seleted optimal investment portfolio are shown.

For increasing local potential to satisfy Georgian power demand by generating power, method for selecting the optimal investment portfolio for providing Georgian energy safety within the medium term is elaborated based on which the optimal portfolio for the investments to be implemented in Georgian energy section was selected.




NEW TYPES OF PLASMA FURNACE

A.PRANGISHVILI, Z.GASITASHVILI, M.GELENIDZE, G.GOGIA,  PHD DAVID GELENIDZE
(Georgia)

The Electric arc furnaces take up dominant position in the Metallurgy. Getting high temperatures in electric arc furnaces is a big problem. When the temperature rises, the recovery process (desilication, dephosphorization and others) is accelerated, which means that decreases the time of these processes and energy consumption, also, the quality of smelted metal is improved and increases the affinity of coal with oxygen and it becomes possible to recover any metal from their oxides. Until now, the high temperatures were obtained only in the plasma furnaces. Modern plasma furnaces, despite of their technological capabilities, includes a many technical difficulties and requires huge economic costs. Therefore, plasma-furnaces are used only for making such materials, which can not be produced by other known methods or for treatment of the harmful materials when the environmental consequences are more valuable than economic costs. We have developed, manufactured and tested a laboratory model of the plasma furnace, which is simpler and cheaper than the electric-arc furnace, and is more effective than other plasma-furnace.




RESULTS OF EXPERIMENTAL STUDY OF BOILING HEAT TRANSFER MULTIFACTORING

I.SHEKRILADZE, J.RUSISHVILI, G.GIGINEISHVILI, D.SHEKRILADZE
(Georgia)

Installation and methodology for conducting experiments on boiling heat transfer multifactoring are described. The results of experimental study of boiling of saturated and subcooled benzene on end surfaces of copper and stainless steel cylinders at upward and downward orientations in the gravity field are presented. Experimental data on boiling of hexane at various angles of inclination relative to downward orientation also are presented.