Aspace has a sensible heating load of 60,000 w. the space is to be maintained at 21°c db while the outdoor air is at 1°c db and 20% rh. on coil air at 15°c is heated, humidified at the rate of 8 g/s, and supplied to the space at 31°c db and 25% rh. determine: a. the total amount of air supplied to the space; b. the amount of outdoor air supplied to the space; c. the relative humidity of the space. 3 plot the process on a psychrometric chart.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater