Consider a 150-W incandescent lamp. The filament of the lamp is 5-cm long and has a diameter

Question:

Consider a 150-W incandescent lamp. The filament of the lamp is 5-cm long and has a diameter of 0.5 mm. The diameter of the glass bulb of the lamp is 8 cm. Determine the heat flux, in W/m²,

(a) On the surface of the filament

(b) On the surface of the glass bulb,

(c) Calculate how much it will cost per year to keep that lamp on for eight hours a day every day if the unit cost of electricity is $0.08/kWh.

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Heat And Mass Transfer Fundamentals And Applications

ISBN: 9780073398181

5th Edition

Authors: Yunus Cengel, Afshin Ghajar

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Question Posted: Sep 10, 2023 03:05 AM

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Consider a 150-W incandescent lamp. The filament of the lamp is 5-cm long and has a diameter

Question:

Filament d = 0.5 mm L = 5 cm -D = 8 cm

Step by Step Answer:

Lets calculate the heat flux at different locations for the 150W incandescent lamp a Heat Flux on the Surface of the Filament The heat flux QA on the ...View the full answer

Heat And Mass Transfer Fundamentals And Applications

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