As shown in the figure, a 320-ft3 tank contains 25 lb of H2O initially at 30 lbf/in?. The tank is connected to a large steam line car steam at 200 lbf/in?, 450°F. Steam flows into the tank through a valve until the tank pressure reaches p2 = 100 lbf/in? and the temperature is 400°F, at which time the valve is closed.
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- As shown in the figure, a 300-ft3 tank contains 25 lb of H20 initially at 30 lbf/in?. The tank is connected to a large steam line carrying steam at 200 Ibf/in?, 450°F. Steam flows into the tank through a valve until the tank pressure reaches p2 = 160 Ibf/in? and the temperature is 400°F, at which time the valve is closed. Steam at Tank 200 lbf/in.2, 450°F Valve (1) Initially: 30 lbfin.?, mị = 25 lb |(2) Finally: P, Ibfin.?, 400°E. Determine the amount of mass that enters the tank, in Ib, and the heat transfer to the tank from its surroundings, in Btu.As shown in the figure, a 300-ft3 tank contains 25 Ib of H20 initially at 30 lbf/in?. The tank is connected to a large steam line carrying steam at 200 lbf/in?, 450°F. Steam flows into the tank through a valve until the tank pressure reaches p2 = 140 lbf/in? and the temperature is 400°F, at which time the valve is closed. Steam at Tank 200 lbf/in.2. 450°F Valve |(1) Initially: 30 lbf in.?, mı = 25 lb |(2) Finally: P, lbfin.?, 400°F. Determine the amount of mass that enters the tank, in Ib, and the heat transfer to the tank from its surroundings, in Btu.As shown in the figure, a 300-ft tank contains 25 Ib of H2O initially at 30 lbf/in?. The tank is connected to a large steam line carrying steam at 200 lbf/in?, 450°F. Steam flows into the tank through a valve until the tank pressure reaches p2 = 140 lbf/in? and the temperature is 400°F, at which time the valve is closed. Steam at 200 Ibfin.?, 450°F Tank Valve (1) Initially: 30 Ibf in?, mi = 25 lb (2) Finally: P, Ibfin?, 400°F Determine the amount of mass that enters the tank, in Ib, and the heat transfer to the tank from its surroundings, in Btu.
- As shown in the figure, a 260-ft tank contains 25 lb of H20 initially at 30 lbf/in?. The tank is connected to a large steam line carrying steam at 200 lbf/in?, 450°F. Steam flows into the tank through a valve until the tank pressure reaches p2 = 160 lbf/in? and the temperature is 400°F, at which time the valve is closed. Steam at Tank 200 lbf/in.2. Valve (1) Initially: 30 lbfin.?, mı = 25 lb (2) Finally: P, lbfin.?, 400°F. 450°F (1) Determine the amount of mass that enters the tank, in Ib, and the heat transfer to the tank from its surroundings, in Btu.As shown in the figure, a 260-ft³ tank contains 25 lb of H20 initially at 30 lbf/in2. The tank is connected to a large steam line carrying steam at 200 lbf/in2, 450°F. Steam flows into the tank through a valve until the tank pressure reaches p2 = 100 lbf/in? and the temperature is 400°F, at which time the valve is closed. Steam at Tank 200 lbf/in_². Valve |(1) Initially: 30 lbfin.2, mi = 25 lb (2) Finally: P, lbfin.?, 400°F. 450°F Determine the amount of mass that enters the tank, in Ib, and the heat transfer to the tank from its surroundings, in Btu.Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 142 L of air at 2,767.92 kPa, 93.330C. Vessel B, of unknown volume, contains air at 68.95 kPa, 4.440C. The valve is opened and, when the properties have been determined, it is found that pm = 1378.96 kPa, tm = 43.330C. What is the volume of vessel B?
- kg). Q3. The steam at 215 bar and 500 °C is supplied to a steam turbine. It expands to 40 bar and 280 °c. It is then reheated to 490 °C and expands to 8 bar and 270 °C. The steam coming out from the second expansion of the turbine is further reheated to 490 °C and expands to condenser pressure of 0.07 bar. The steam entering into the condenser is dry saturated. Assuming the pressure losses in first heater of 1 bar and in second heater 0.5 bar, find (a) the thermal efficiency and power developed if the flow of steam is 10 kg/s (b) the isentropic efficiency of the expansion stages. Neglect the pump work. Mis-n-n (42.8 %, 1738 kW,78.5%,95.4 %, 87%) Q4. The steam nt 100Q3: A distillation column is separating acetone(more volatile component) from ethanol. As pictured, there are two feeds with flow rates F₁=100 mol/hr and F₂-200 mol/hr. Feed 1 has z₁-0.7 and is saturated liquid. Feed 2 has z2 0.4 and is a superheated vapor (q=-0.1) where approximately 1 mol of liquid will vaporize on feed stage for each 10 mol of feed. We desired xd-0.95 and xw-0.05. How many stages are needed to achieve this separation? Ln/Vn=0.64.5. A 0.5 cubic meter tank contains gas at a pressure of 6800 kPa gage, a temperature of 75 deg. Celsius and mass of 25 kg. A part of this gas was discharged and the temperature and pressure changed to 50 deg. Celsius and 4250 kPa respectively. Heat was applied and the temperature was back to 75 deg. Celsius. Find: (a) the final mass in the tank in kg 15.633 16.588 18.283 (b) the discharged mass in kg. 8.412 9.36 6.716 (c) the final pressure of the gas in kPa gage 4135.88 4215.56 O 4578.94
- E3.1. You must use the property data from the tables in the Appendix of your text to do this problem. The figure below illustrates a pressure cooker with the pressure relief valve removed. atm- 100 kPa V= 2 liter bottom 5% is filled with liquid water . The pressure cooker has an internal volume of V = 2 liters. Because the relief valve is removed, the contents are initially at atmospheric pressure, Patm = 100 kPa. The pressure cooker contains water in a two-phase state. The bottom 5% of the volume of the vessel is filled with liquid water while the remainder of the vessel contains water vapor. a) Determine the initial temperature of the water in the cooker. b) Determine the quality and specific volume of the water initially in the cooker. c) Sketch by hand a T-v diagram and label the initial state of the water (state 1).The pressure of the air in a starting vessel is 40 bar and the temperature is 24°C. If a fire in the vicinity causes the temperature to rise to 65 °C. Neglect anyincrease in the volume of the vessel which is 5 liters. Please answer the following a. The thermodynamic process the problem representsb. the pressure, temperature, and volume after the processc. change in internal energy, change in enthalpy and change in entropyd. work nonflow and heat transferred2. Saturated steam at 100°C is heated to 350°C at constant pressure. Use the steam tables to determine: a. The pressure in bar. b. the required heat input (J/s) if a continuous stream flowing at 100 kg/s undergoes the process.