hot water at an average temperature of 326 K an average velocity of 0.4 m/s is flowing through a 5-m section of a thin-wall hot water pipe that has an outer diameter of 2.5 cm. The pipe passes through the center of a 14-cm-thick wall filled with fiberglass insulation. If the surface of the wall are at 291 K, determine
the rate of heat transfer from the pipe to the air in the room
the temperature drop of the hot water as it flows through this 5-m-long section of the wall