Q1: At a constant velocity of 20 m/s, air passes across a flat plate with ambient pressureand temperature of 20 kPa and 20°C. At a distance of 7.5 cm from the leading edge, theplate is heated to a constant temperature of 75°C. How much heat is transferred overallfrom the leading edge to a location 35 cm from the leading edge?Q2: The critical Reynolds number for flow over a flat plate in a particular application is106. This critical Reynolds number and an isothermal plate temperature of 400 K areencountered by air flowing across it at 1 atm, 300 K, and 10 m/s. At the end of the plate,the Reynolds number is 5 × 106. What will average heat transfer coefficient be for thissystem? What is the length of the plate? What is the plate's loss of heat?Q3: At 50 kPa and 300 K, air moves at an average velocity of 6 m/s across a 20-cm-square plate. To provide a steady flow of heat, an electrical heater is mounted within theplate. If the plate temperature is limited to 600 K, how much heat can be dissipatedoverall?

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Answered: Q1: At a constant velocity of 20 m/s,…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.65P

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