A copper tube (k-75 W/m*K) with inner radius r;-2 cm and outer radius r2-2.05 cm is used to transport a low-temperature refrigerant having anmean temperature T-350 K and convection coefficient h=50 W/m2*K. The tube is covered with insulation having inner radius r,-2.05 cm andouter radius r-4.6 cm. The conductivity of the insulation is k=0.05 W/m*K. The air on the outside of the insulation at T=400 K creates anverage convection coefficient of h,=16 W/m2*K.Ta. Sketch the equivalent thermal circuit of the system and express all resistances in terms of relevant variables. Assume that T; and To areuniform along the length of the pipe.b. Use a thermal circuit to write an expression for the rate of heat transfer for a length of pipe L=4 meters in terms of the variables defined above.

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copper tube (k-75 W/m*K) with inner radius r;-2 cm and outer radius r22.05 cm is used to transport a low-temperature refrigerant having an an temperature T-350 K and convection coefficient h-50 W/m2 K. The tube is covered with insulation having inner radius r, 2.05 cm and ter radius r-4.6 cm. The conductivity of the insulation is k=0.05 W/m*K. The air on the outside of the insulation at T-400 K creates an erage convection coefficient of h,-16 W/m2 K. emal w Ane T Sketch the equivalent thermal circuit of the system and express all resistances in terms of relevant variables. Assume that T and To are hiform along the length of the pipe. Use a thermal circuit to write an expression for the rate of heat transfer for a length of pipe L-4 meters in terms of the variables defined above.

copper tube (k-75 W/mK) with inner radius r;-2 cm and outer radius r22.05 cm is used to transport a low-temperature refrigerant having an an temperature T-350 K and convection coefficient h-50 W/m2 K. The tube is covered with insulation having inner radius r, 2.05 cm and ter radius r-4.6 cm. The conductivity of the insulation is k=0.05 W/mK. The air on the outside of the insulation at T-400 K creates an erage convection coefficient of h,-16 W/m2 K. emal w Ane T Sketch the equivalent thermal circuit of the system and express all resistances in terms of relevant variables. Assume that T and To are hiform along the length of the pipe. Use a thermal circuit to write an expression for the rate of heat transfer for a length of pipe L-4 meters in terms of the variables defined above.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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