Required information Air is to be heated by passing it over a bank of 3-m-long tubes inside which steam is condensing at 100°C. Air approaches the tube bank in the normal direction at 20°C and 1 atm with a mean velocity of 5.2 m/s. The outer diameter of the tubes is 1.6 cm, and the tubes are arranged in-line with longitudinal and transverse pitches of SL = ST= 6 cm. There are 20 rows in the flow direction with 10 tubes in each row. Assume the air properties at mean temperature of 35°C and 1 atm. The air properties at the assumed mean temperature of 35°C and 1 atm are k= 0.02625 W/m-K, p = 1.145 kg/m³, co = 1.007 kJ/kg-K, Pr = 0.7268, µ = 1.895 × 10¬5 kg/m-s, Prs = Pr@ Ts = 100°C = 0.7111. Determine the pressure drop across the tube bank. (You must provide an answer before moving on to the next part.) The pressure drop is |Pa.

Required information Air is to be heated by passing it over a bank of 3-m-long tubes inside which steam is condensing at 100°C. Air approaches the tube bank in the normal direction at 20°C and 1 atm with a mean velocity of 5.2 m/s. The outer diameter of the tubes is 1.6 cm, and the tubes are arranged in-line with longitudinal and transverse pitches of SL = ST= 6 cm. There are 20 rows in the flow direction with 10 tubes in each row. Assume the air properties at mean temperature of 35°C and 1 atm. The air properties at the assumed mean temperature of 35°C and 1 atm are k= 0.02625 W/m-K, p = 1.145 kg/m³, co = 1.007 kJ/kg-K, Pr = 0.7268, µ = 1.895 × 10¬5 kg/m-s, Prs = Pr@ Ts = 100°C = 0.7111. Determine the pressure drop across the tube bank. (You must provide an answer before moving on to the next part.) The pressure drop is |Pa.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Required information
Air is to be heated by passing it over a bank of 3-m-long tubes inside which steam is condensing at 100°C. Air approaches
the tube bank in the normal direction at 20°C and 1 atm with a mean velocity of 5.2 m/s. The outer diameter of the tubes is
1.6 cm, and the tubes are arranged in-line with longitudinal and transverse pitches of S, = ST= 6 cm. There are 20 rows in
the flow direction with 10 tubes in each row. Assume the air properties at mean temperature of 35°C and 1 atm. The air
properties at the assumed mean temperature of 35°C and 1 atm are k= 0.02625 W/m-K, p= 1.145 kg/m, cp= 1.007
kJ/kg-K, Pr = 0.7268, µ = 1.895 × 10¬5 kg/m-s, Prs = Pra Ts = 100°C = 0.7111.
Determine the pressure drop across the tube bank. (You must provide an answer before moving on to the next part.)
The pressure drop is
Pa.

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