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, cp = 1.007 -5 kJ/kg-K, Pr = 0.7268, µ = 1.895 × 10 kg/m-s, Prs = Pr@ Ts = 100°C = 0.7111. Determine the rate of heat transfer. (You must provide an answer before moving on to the next part.) The rate of heat transfer is kW.

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, cp = 1.007 -5 kJ/kg-K, Pr = 0.7268, µ = 1.895 × 10 kg/m-s, Prs = Pr@ Ts = 100°C = 0.7111. Determine the rate of heat transfer. (You must provide an answer before moving on to the next part.) The rate of heat transfer is kW.

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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