Q6/ Water at 15°C is to be heated to 65°C by passing it over a bundle of 4-m-long 1-cm-diameter resistance heater rods maintained at 90°C. Water approaches the heater rod bundle in normal direction at a mean velocity of 0.8 m/s. The rods arc arranged in-line with longitudinal and transverse pitches of SP = 4 cm and SN = 3 cm. Determine the number of tube rows in the flow direction needed to achieve the indicated temperature rise.

Q6/ Water at 15°C is to be heated to 65°C by passing it over a bundle of 4-m-long 1-cm-diameter resistance heater rods maintained at 90°C. Water approaches the heater rod bundle in normal direction at a mean velocity of 0.8 m/s. The rods arc arranged in-line with longitudinal and transverse pitches of SP = 4 cm and SN = 3 cm. Determine the number of tube rows in the flow direction needed to achieve the indicated temperature rise.

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.16P

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