Acylindrical wall has a temperature of 800 c on the inside and is exposed to air and room surfaces at 20 on the outside. if the wall has an inside diameter of 0.5 m, thickness of 10 cm, height of 0.5 m, and thermal conductivity of 0.5 w/(m. k), and th exposed outside surface has a convection coefficient of is w/(m2·k), (a) how much heat is transmitted through the wall (in watts), and (b) what is the temperature of the exposed outside of the wall?

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.