Question

Energy transfer in mechanical systems: During steady-state operation, a mechanical gearbox receives 70 KW of input power through the input shaft and delivers power through the output shaft. Considering the gearbox as a thermodynamic system, the rate of convection heat transfer generated during its operation is defined by: where h 0.171 kW/m2-K is the convection heat transfer coefficient, A 1.0 m is the outer surface area of the gearbox, T 300 K is the temperature of the outer surface, and T 293 K is the temperature of the surrounding air. For the gearbox, evaluate the heat transfer rate, 2, and the power delivered through the output shaft, W.

Answer 1

Answer:

Heat transfer rate(Q)= 1.197kW

Power output(W)=68.803kW