A steam turbine takes in super-heated steam at 2,000 kPa and 300 Celsius discharges at 50 kPa. What is the maximum theoretical work production in kJ/kg? What is the outlet temperature in Celsius?

4. Steam enters a cylinder fitted with a piston at a pressure of 20 MN/m² and a temperature of 500 deg C. The steam expands to a pressure of 200 kN/m² and a temperature of 200 deg C. During the expansion there is a net heat loss from the steam through the walls of the cylinder and piston of 120 kJ/kg. Determine the displacement work done by one kg of steam during this expansion.

Thermal systems problem: Assume that nitrogen is available in a storage tank at 2 MPa and 210 K. On the following chart, show the path for the following scenarios. a) An expansion valve is connected to this tank that drops the fluid (i.e., nitrogen) pressure at its outlet to one atmosphere.   b) A compressor is connected to this tank that raises the fluid pressure at its outlet to 10 MPa.   c) A turbine is connected to this tank that drops the fluid pressure at its outlet to one atmospheric pressure. d) A heat exchanger is connected to this tank that raises the fluid temperature to 330K at its outlet. e) A heat exchanger is connected to this tank that drops the fluid temperature to 135K at its outlet.   f) Show the process for the fluid to change its state from 2 MPa and 210 K to 14 MPa and 240 K.  Identify the required equipment. g) If a coolant at 150 K is available, is it possible to change the state of nitrogen from 2 MPa and 210 K to saturated liquid at atmospheric pressure?  If…

5.9. Extraction of uranyl nitrate. A 20 wt% solution of uranyl nitrate (UN) in water is to be treated with tributyl phosphate (TBP) to remove 90% of the uranyl nítrte in batchwise equilibrium contacts. Assuming water and TBP are mutually insoluble, how much TBP is required for 100 g of solution if, at equilibrium, (g UN/g TBP) 5.5(g UN/g H20) and: (a) all the TBP is used at once in one stage; (b) half is used in each of two consecutive stages; (c) two countercurrent stages are used; (d) an infinite number of crosscurrent stages is used; and (e) an infinite number of countercurrent stages is used?