A powerful blender that is currently available in the market is rated at 1.2 hp. if the blender is filled with water at 70 °F and operated, the rotating blades can cause the water to boil.
a) - Taking the water as the system, what are the energy interactions occurring at the system boundary?
b) - Assuming that there are no heat losses from the system, what is the minimum time required to raise 3 lbm of water to its boiling point temperature at atmospheric pressure? (assume the specific heat of water to be constant at 1 Btu/lbm*F and 1 hp = 2544 Btu/hr)