A steam generating unit burns coal, with the combustion gases at 900ºC filling the combustion chamber. The combustion chamber is a right circular cylinder 10 m in diameter and 15 m tall. Estimate the heat transfer to the walls if the walls are at 500ºC and have emissivity of 0.9.
What will be an ideal response?
Since the chamber is filled with the combustion gases, as a first approximation use a two surface model sketched.
You might also like to view...
What determines what element a configuration of protons, neutrons and electrons will be is
1) the number of protons, 2) the number of neutrons, 3) the mass of protons and neutrons, and the principal variable that determines whether the atoms will form a solid, liquid, gaseous, or plasma phase is 4) atomic number. 5) atomic weight. 6) density. 7) temperature.
The relative distance between the planets increase with distance from the Sun
a. True b. False Indicate whether the statement is true or false
Matter Waves: If the wavelength of a photon in vacuum is the same as the de Broglie wavelength of an electron, which one is traveling faster through space?
A. The electron because it has more mass. B. The photon because photons always travel through space faster than electrons. C. They both have the same speed.
The speed of a vertically-thrown ball at the top of its path is
A) zero. B) 10 m/s2. C) between zero and 10 m/s2. D) dependent on the mass of the ball.