Jets of high-speed steam are used in spray cleaning. steam at 15.0 bar with 150°c of superheat is fed to a well-insulated valve at a rate of 1.00 kg/s. as the steam passes through the valve, its pressure drops to 1.0 bar. the outlet stream may be totally vapor or a mixture of vapor and liquid. kinetic and potential energy changes may be neglected. draw and label a flowchart, assuming that both liquid and vapor emerge from the valve. write an energy balance and use it to determine the total rate of flow of enthalpy in the outlet stream ( . h out = . m l ˆ h l + . m v ˆ h v ) (h. out=m. lhˆl+m. vhˆv). then determine whether the outlet stream is in fact a mixture of liquid and vapor or whether it is pure vapor. explain your reasoning. what is the temperature of the outlet stream? 337°c assuming that your answers to parts (b) and (c) are correct and that the pipes at the inlet and outlet of the valve have the same inner diameter, would δ . e k δe. k across the valve be positive, negative, or zero? explain your answer. (note: you don’t have to calculate the kinetic energies at the inlet and outlet to solve this problem, although you can if you have extra time on your hands.)