In a power plant, a pipe with a diameter of 5 cm and a length of 10 m is used to transfer he gases. The hot gas flows in the pipe with a mass flow rate of 0.3 kg/s. The pipe is located in a environment where the temperature is 20 degrees C and the external surface temperature kept constant at 100 degrees C. If the temperature difference between the inlet and outlet of the pipe is 30 degrees C and th specific heat of gas is 2190 J/kg.K Determine the coefficient of convection heat transfer between the pipe and the surroundings.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Hello Sir, 
Good Afternoon.
I have a question in my homework related Heat Transfer lesson. The following below is my question. Please Advice, thank you.

 

In a power plant, a pipe with a diameter of 5 cm and a length of 10 m is used to transfer hot
gases. The hot gas flows in the pipe with a mass flow rate of 0.3 kg/s. The pipe is located in an
environment where the temperature is 20 degrees C and the external surface temperature is
kept constant at 100 degrees C.
If the temperature difference between the inlet and outlet of the pipe is 30 degrees C and the
specific heat of gas is 2190 J/kg.K
Determine the coefficient of convection heat transfer between the pipe and the surroundings.
Air, 20°C
T = 100°C
D = 5 cm
Superheated
vapor
0.3 kg/s
L = 10 m
Tin - Tout = 30°C
Transcribed Image Text:In a power plant, a pipe with a diameter of 5 cm and a length of 10 m is used to transfer hot gases. The hot gas flows in the pipe with a mass flow rate of 0.3 kg/s. The pipe is located in an environment where the temperature is 20 degrees C and the external surface temperature is kept constant at 100 degrees C. If the temperature difference between the inlet and outlet of the pipe is 30 degrees C and the specific heat of gas is 2190 J/kg.K Determine the coefficient of convection heat transfer between the pipe and the surroundings. Air, 20°C T = 100°C D = 5 cm Superheated vapor 0.3 kg/s L = 10 m Tin - Tout = 30°C
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