Consider a heat exchanger that uses hot air to heat cold water. Air enters this heat exchanger at 20 psia and 200 degrees F at a rate of 100ft^3/min and leaves at 17 psia and 100 degrees F. Water enters this unit at 20 psia and 50 degrees F at a rate of 0.5 lbm/s and exits at 17 psia and 90 degrees F. Determine the total flow power, in hp, required for this unit and the flow work, in BTU/lbm, for the air and water streams.