A new HVAC system is been tested at the laboratory. The experimental data for the humid air at the inlet and outlet are: I The mass flow rate of dry air is 300lbda/hr. Assume that the temperature of the condensated water is equal to the dew point of the outlet air at the evaporator (50F). Determine the total amount of heat transferred (cooling+heating). Answers: (1) 87F; (2) 75F; (3) 0.012lbw/lbda; (4) 5Btu/lbda; (5) 8.4Btu/lbda; (6) 4,721.6Btu/hr (cooling: 2,861.6 Btu/hr, heating: 1,860 Btu/hr)