The air coming out of the distillery has 60% relative humidity. How much water will you need to saturate this airstream? After saturation* what will be the temperature and the total volumetric flow rate? Should you also provide soaker hoses in your design? Discuss the reasons why you will or will not include soaker hoses.

A 1.5-ft³rigid tank contains saturated refrigerant-134 at 170 psia. Initially, 20 percent of the volume is occupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank. Heat is transferred to the refrigerant such that the pressure inside the tank remains constant. The valve is closed when the last drop of liquid in the tank is vaporized. Determine the total heat transfer for this process. R-134a, Sat. mixture P = 170 psia V = 1.5 ft³

3. Compute the formula weight and density of exhaust gas which contains 72% N2, 1% Ar, 12% H2O, and 15% CO2. The temperature and pressure of the mixture are 290K and 1.2atm.

Not sure how to do this one. Would appreciate a full solution, thanks! Textbook Answer: About 10 m/s.