An ideal gas, with temperature-independent CP = (7/2)R, at 15oC and having an initial volume of 60 m3, is heated at constant pressure (P = 0.1013 MPa) to 30oC by transfer of heat from a reservoir at 50oC. Calclulate ΔSgas, ΔSheat reservoir, ΔSuniverse. What is the irreversible feature of this process?

t = 110°C, s = 6.5 KJ/kg-K

5.13: You can assume Torricelli's equation applies and calculate the exit velocity. Knowing the exit velocity, you can then calculate the velocity of the level falling in the tank.

Two streams are mixed in an adiabatic mixer, as shown in the figure. It is known that: • Stream 1 is saturated liquid/saturated vapour mixture at 1 bar with flow rate 1.17 kg/s and quality 0.20 • Stream 2 is superheated vapour at 1 bar and 470°C • Stream 3, the product stream, is a saturated liquid/saturated vapour mixture at 1 bar with quality 0.89 Neglect kinetic and potential energy changes and calculate the mass flow rate of the superheated vapour stream, in kg/s. (1) (2) Mixer (3

This fixed mass system contains air with mass m = 13.947 kgs. The air is ideal gas and you must assume constant specific heats. The properties of air given are Cvo = 0.717 KJ/K/Kg, R = 0.287 KJ/K/Kg, and K=Cpo/Cvo=1.4. Then a reversible, constant volume process occurs. We are given To = 200K (Surroundings temp) and Entropy change of the surroundings (S₂-S1) surrounding = +4.0 KJ/K. Find the 1Q2 in KJoules, (Heat transfer from/to the system, sign + or -), find work done on/by the system (1W₂) and then find the initial and final temperatures of the system in K.

values from steam table for 9000 kPa and 600 C H = 3631.1 S = 6.9574

t = 165°C, h = 3000 KJ/kg

p = 0.125 MPa, v = 1.3749 m3/kg

Please use Book: Introduction to Chemical Engineering Thermodynamics 8 edition, 2018 (Smith, J.M., Van Ness, H.C., Abbot, M.M., Swihart.)

the following data are for steam power plant:Pressure and temperature of steam at boiler exit and turbine inlet (state2)=30 bar and 300°C. Pressure and quality of steam at turbine exit and condenser inlet (state 3) =20 kpa and 95%.Pressure of saturated water at condenser exit and pump inlet (state 4)=20 kpa.Pressure and temperature of water at pump exit and boiler inlet (state1)=30 bar and 100°C.Steam flow rate =15 kg/s.The heat losses from the body of the turbine =100 kW.Determine the thermal efficiency of the steam power plant