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CONDUCTION OF HEAT IN THE STEADY STATE
CONDUCTION OF HEAT IN THE UNSTEADY STATE
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according to Eq Assume average temperature average thermal conductivity B/hr ft F black body brick Calculate the heat coefficient of heat coil considered constant cooling curve cylinder density determined dimensional analysis dimensionless dimensionless groups electrical resistance emissivity equal equation EXAMPLE Fahrenheit film coefficient fluid free convection ft long ft/sec gases given heat conduction heat energy heat exchanger heat flow heat loss heat transfer coefficient heater horizontal inner and outer insulation layer length liquid magnesia material measured natural convection outer surface temperatures pipe plane plate pound mass pressure problems pyrometer radiant energy radiant interchange radiation rate of heat refractory reradiating respectively Reynolds number Sect shape factor shown in Fig Solution specific heat specific weight sq ft square foot substitution in Eq Table temperature distribution thermal conductivity thermocouple thick total heat tube unit vapor velocity viscosity