Flue gases at 700ºC pass over a bank of superheater tubes at 6 m/s. The tube bank is composed of 20 columns of 2 cm diameter tubes with 40 tubes per column. The arrangement of the tubes is staggered as shown in the figure with ST = SD = 4.0 cm. Determine the pressure drop across the tube bundles, assuming that the tubes have an average surface temperature of 500ºC.
You might also like to view...
Which of the following is the strongest evidence in support of the hypothesis that the Solar System was formed by the collapse of a gas and dust nebula?
A. the discovery of extra solar planets B. images of other stars with gas and dust disks surrounding them C. the existence of large clouds D. radiometric dating of dust from the Moon's surface
What characteristic do all stars on the main sequence share?
A. They are all fusing hydrogen into helium in their cores. B. They all have the same temperature. C. They all have the same luminosity. D. They will all go through a helium flash in the future. E. They all have the same size.
How much work is done by a person lifting a 2.0-kg object from the bottom of a well at a constant speed of 2.0 m/s for 5.0 s?
a. 0.22 kJ b. 0.20 kJ c. 0.24 kJ d. 0.27 kJ e. 0.31 kJ
Fragments of rocks formed due to erosion settle out to form layers of
A) sediment B) precipitate C) deposit D) residuum