ANALYSIS OF THE APPROACHES FOR IMPROVEMENT OF THE ENERGY EFFICIENCY OF ELECTRIC RESISTANCE FURNACES
- 1 Electrcal Engeneering Faculti , Technical University of Varna, Bulgaria
- 2 Mechanical Engeneering Faculti, Technical University of Varna, Bulgaria
Chamber electric resistance furnaces (CRF), used for performing of various heating processes, are powerful consumers of electric power. During their operation, different deviations from the original construction may appear and defects, such as: defects in the insulation and the gaskets, deformations of the body, and others. They result in increased thermal flow, running from the chamber to the ambience, increased thermal losses and, as a whole, increased electric power losses. This problem is of special concern in view of current energy efficiency criteria and its solution is sought in the following directions: analysis of the energy efficiency of the furnaces at the stage of their design; analysis of the reconstruction and repair works due to worn-out equipment, consisting in replacement of thermal insulation in order to decrease the losses.