Q4. (a) Consider a steam pipe of length L - 26 m, inner radius r -5 em, outer radius -7 cm, and thermal conductivity k-25 W/m K, as shown in Fig. The inner and outer surfaces of the pipe are...

Extracted text: Q4. (a) Consider a steam pipe of length L - 26 m, inner radius r -5 em, outer radius -7 cm, and thermal conductivity k-25 W/m K, as shown in Fig. The inner and outer surfaces of the pipe are maintained at average temperatures of T,-120C and T; - 50°C, respectively. Obtain a general relation for the temperature distribution inside the pipe under steady conditions and determine the rate of heat loss from the steam through the pipe. [12 marks