1.A heat pump that operates on the ideal vapor compression cycle with refrigerant 134a is used to heat water from 16 to 56 degrees Celsius at a rate of 0.20kg/s. The condensor and evaporator pressures are 1.5 and 0.35 Mpa, respectively. Determine the power input into the heat pump.
2.A w21 X 101 is used as a compression member with one end fixed and the other end free. The length is 10 feet. What is the nominal strength if Fy=50 ksi? Note that this is a slender-element compression member, and the equations of AISC section E7 must be used.