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Water at To = 4°C flows over a flat plate of length, L = 1.5 m, at a velocity, U = 0.6 m/s, while the surface of the plate is maintained at, T, = 40°C. a) What is the heat rate per unit width of plate, q' [W/m]? b) Calculate the percent error in q'if properties are evaluated at To instead of Tr. c) Recalculate q' for the case when a wire is placed at the leading edge (x = 0) to induce turbulence. Reference values for water properties at: - 295 K Ts+Too 2 T. = T, T=277 K k=0.606 W/m-k -7 2 v=9.61 x 10 m/s Pr= 6.62 k=0.577 W/m-k -6 2 v= 1.56 x 10 m/s Pr= 11.4

Water at To = 4°C flows over a flat plate of length, L = 1.5 m, at a velocity, U = 0.6 m/s, while the surface of the plate is maintained at, T, = 40°C. a) What is the heat rate per unit width of plate, q' [W/m]? b) Calculate the percent error in q'if properties are evaluated at To instead of Tr. c) Recalculate q' for the case when a wire is placed at the leading edge (x = 0) to induce turbulence. Reference values for water properties at: - 295 K Ts+Too 2 T. = T, T=277 K k=0.606 W/m-k -7 2 v=9.61 x 10 m/s Pr= 6.62 k=0.577 W/m-k -6 2 v= 1.56 x 10 m/s Pr= 11.4

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Water at To = 4°C flows over a flat plate of length, L = 1.5 m, at a velocity, u = 0.6 m/s, while the surface of the plate is maintained at, T, = 40°C. a) What is the heat rate per unit width of plate, q' [W/m]? b) Calculate the percent error in q' if properties are evaluated at T. instead of Tr. c) Recalculate q' for the case when a wire is placed at the leading edge (x = 0) to induce turbulence. Reference values for water properties at: = 295 K Ts+Too T₁ 2 T = 277 K k=0.606 W/m.k 2 v=9.61 x 10 m/s Pr= 6.62 k=0.577 W/m-k 62, v= 1.56 x 10 m/s Pr = 11.4
Transcribed Image Text:Water at To = 4°C flows over a flat plate of length, L = 1.5 m, at a velocity, u = 0.6 m/s, while the surface of the plate is maintained at, T, = 40°C. a) What is the heat rate per unit width of plate, q' [W/m]? b) Calculate the percent error in q' if properties are evaluated at T. instead of Tr. c) Recalculate q' for the case when a wire is placed at the leading edge (x = 0) to induce turbulence. Reference values for water properties at: = 295 K Ts+Too T₁ 2 T = 277 K k=0.606 W/m.k 2 v=9.61 x 10 m/s Pr= 6.62 k=0.577 W/m-k 62, v= 1.56 x 10 m/s Pr = 11.4
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