8. A pipe 20 cm in diameter contin steam at 20°c. It is coveredby a layer ob insulalion 6cm Hhick and therrmal conduct-ivuty 0.0003.1F the temperature 0f the outer curface ús30' C, fünd the heat loss per hour from ruso meter iength obpipe-

given; diameter of pipe(d)=20cm =20*10-2minlet…

8. A pièpe 20cm in diameter contain steam at 20°C. It is covered S by a layer of insulation 6cm thick and thermal conduct- ivity 0.0003. If the temperature of the outer surface is 30°c, find the heat loss per hour from two meter length of piepe.

8. A pièpe 20cm in diameter contain steam at 20°C. It is covered S by a layer of insulation 6cm thick and thermal conduct- ivity 0.0003. If the temperature of the outer surface is 30°c, find the heat loss per hour from two meter length of piepe.

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 7.27P

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

8. A pipe 20 cm in diameter contin steam at 20°c. It is covered
by a layer ob insulalion 6cm Hhick and therrmal conduct-
ivuty 0.0003.1F the temperature 0f the outer curface ús
30' C, fünd the heat loss per hour from ruso meter iength ob
pipe-

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