Ametallic steel tank (a = 11 × 10-6° C - 1) with a volume of 3.1 L bursts if the pressure of the gas it contains exceeds 100atm. If 11.0 moles of ideal gas are put in the tank at 23 °C •To what temperature can the gas heat up before the tank ruptures? DISCONTINUING THERMAL EXPANSION OF THE TANK • To what temperature can the gas be heated before the tank ruptures? NOT DISCONTINUING THERMAL EXPANSION OF THE TANK

Q4. Thermodynamic Cycle (Rankin e cycle and Diesel cycle) (a) Steam having dryness fraction of 55% at 70C temperature. Using steam table, calculate: (i) Specific enthalpy h (kJ/kg) Specific entropy s (kJ/kg-K) (ii) (b) Explain saturated liquid line, saturated vapor line and triple point

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

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Thermodynamics

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Very good system. There is a 100 It capacity capacitive 25°C nitrogen gas at 200 kPa pressure. This valve throttles in electricity consumption at 90°C. The connection is opened and the pressure in the container is filled with its use until it becomes 400 kPa. Find the final temperature and total entropy in the container with constant specific heats. NOTE: The quadratic solution with ax2+bx+c=0 is c=0; -b + vb2 – 4ac x = 2a

A closed steam room of volume 125 m has a temperature 45 C and has a RH=100%. Calculate: a. The mass of water vapor in the room; b. The person inside decides that it is too hot and lowers the thermostat's temperature to a new temperature of 35 C. What is the mass of water vapor for this temperature? c. How much water vapor will condense, in order to still have RH=100% in the room?

Q1) A steel cylinder 10 cm in diameter and 10 cm long is initially at 300 °C. It is suddenly immersed in an oil bath that is maintained at 40 °C, with h =280 W/m² °C. Find: (a) The temperature at the center of the solid after 2 min, and (b) The temperature at the center of one of the regular faces after 2 min. Answers a) T = 175 °C b) T = 151 °C

7. W = 0 when the opposing pressure is A. expanded freely B. same as the gas pressure C. constant D. varying 8. Out of ice, liquid water and water vapor, which will have the maximum entropy? A. Ice C. Water vapor D. Ice and liquid H2O B. Liquid water 9. A steam boiler is made of steel and weighs 900 kg. The boiler contains 400 kg of water. Assuming that 70% of the heat is delivered to boiler and water, how much heat is required to raise the temperature of the whole from 10°C to 100°C? Specific heat capacity of steel is 0.11 kcal/kg K. A. 44900 kcal B. 64000 kcal C. 36000 kcal D. 81000 kcal 10. During an isothermal expansion of an ideal gas, its A. Enthalpy decreases B. Enthalpy remains unaffected C. Enthalpy reduces to zero D. Internal energy decreases 11. Which of the following processes always results in an increase in the energy of a system? A. The system losses heat and has work done on its surroundings B. The system gains heat and does work on the surroundings C. The system losses…