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CHAPTER ONEGeneral Part
Heat Transfer by V Paschkis
Heating by Internal Heat Sources 3 1 Heating of Uninsulated Bod
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applied approximately arc furnaces atmosphere batch-type bath bottom boundary conductance brick carbon charge circuit coil conductor connected load contact resistance continuous furnaces convection conveyor cooling courtesy cross section crucible curve cylinder decreases diameter dielectric heating door efficiency elec electric furnaces electric resistivity electrical efficiency electrode Figure frequency furnace temperature furnace wall furnaces operating graphite hearth heat content heat flow heat losses heat source heat transfer heater heating-up higher increase induction furnaces induction heating inductor inside insulation kwhr latter layer length limited lining lower material maximum melting metal molybdenum nace output oxidation perature phase piece power consumption power factor radiation rate of heat ratio reactance refractory resistors roof salt shown in Fig sidewalls skin effect slab steel surface temperature thermal conductivity thermocouple thickness three-phase tion transformer tubes uniformity unit usually voltage wire zone