Liquid ethanol C2H5OH at 298k, 1 atm enters a combustor operating at steady state and burns completely with air entering at 298k, 1 atm. The combustion product exit at 1120 k. The fuel mass flow rate is 0.01 kg/s. The heat transfer out of the combustor is 30 kW. Find:

1) the amount of excess air used.
2) mass flow rate of air.

1in2 processor chip can be modelled as an isothermal plane wall of silicon, isothermal on both sides. the power input to the bottom of the plane wall, or the processing power of the chip, often called the thermal design power (tdp), is 100w. assume the periphery is adiabatic. the silicon is 400 microns thick. the temperature at the junction, or in this case on the bottom of the isothermal plane wall, is 85°c. what is the top surface temperature, assuming that the only mode of heat transfer is conduction