An electric room heater has been designed in the shape of a vertical cylinder 2 m tall
Question:
An electric room heater has been designed in the shape of a vertical cylinder 2 m tall and 30 cm in diameter. For safety, the heater surface cannot exceed 35?C. If the room air is 20?C, find the power rating of the heater in watts.GIVENAn electric heater in the shape of a vertical cylinderHeater height (H) = 2 mHeater diameter (D) = 30 cm = 0.3 mRoom air temperature (T??) = 20?C = 293 KASSUMPTIONSRadiation is negligibleHeat transfer from the top and bottom of the tank isnegligible
Transcribed Image Text:
D= 0,3 m T= 35°C (max) Alr H=2 m T.- 20°C
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When the heater surface temperature is 35C the Grashof ...View the full answer
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Related Book For
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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