Air from an office building is to be recirculated and mixed with outside air. The air from inside the office building flows at a volumetric flow rate of 5 m^3/s and has a temperature of 24 °C and a relative humidity of 40%. The outside air has a volumetric flow rate of 2 m^3/s, a temperature of 12 °C and a relative humidity of 80%. The pressures of all streams is 101.325 kPa.
Determine the temperature and relative humidity of the mixed stream.

An ideal rankine cycle with reheat uses water as the working fluid. the conditions at the inlet to the high pressure turbine are 10mpa, 650°c and the steam is reheated at a constant pressure of 1.4mpa before entering the low pressure turbine. for a condenser pressure of 10kpa, plot the cycle thermal efficiency and quality of steam at the low pressure turbine exit versus reheat temperatures (the temp of steam entering the low pressure turbine) of 400, 500, and 600°c. draw the t-s diagram and show all your work for a reheat temperature of 400°c .note, there will be two plots. one with thermal efficiency on in the ordinate versus reheat temperate and the other will have quality on the ordinate versus reheat temperature. be sure to label all axes with variables and units and include title. the plots must be done on computer.