Estimate the electrical power required to maintain a vertical plate resistance heater at 130°C in an ambient air at 20°C. The plate is 15 cm high and 10 cm wide. Compare result with 450 cm high plate....

Estimate the electrical power required to maintain a vertical plate resistance heater at 130°C in an ambient air at 20°C. The plate is 15 cm high and 10 cm wide. Compare result with 450 cm high plate. The radiation heat transfer coefficient is 8.5 W/ m².K for specified surface temperature.