Water is contained in a closed, rigid, 0.25m^3 tank at an initial pressure of 500 KPa and a quality of 60%. Heat transfer occurs until the tank contains only saturated vapor. Determine the final mass of the vapor in the tank in kg, and the final pressure in bar.

A rigid tank contains 20 lbm of air at a pressure of 20 lbf/in2 and 70°F. More air is added to the tank until the pressure and temperature rise to 35 lbf/in2 and 90°F, respectively. Determine the mass of air added to the tank

Five kg of steam at 350 °C contains 15% moisture. After addition of heat at constant temperature the pressure becomes 2.5 MPaa. Using steam tables, determine a) the steam initial pressure; b) the total heat added; c) the change in enthalpy; c) the change of internal energy; and d) the degrees of superheat at the final condition.

At 645.3 kPa and 151.2°C, steam leaves an industrial boiler. When the calorimeter pressure reaches 104.3 kPa, a part of the steam is fed through a throttling calorimeter and expelled to the atmosphere. If the steam temperature at the calorimeter is 113.8°C, a. how much moisture is exiting the boiler container? b. If the mass of the saturated liquid is 15 kg, calculate the mass of the saturated vapor.  @ 645.3 kPa and 151.2°C: hf = 624.56 kJ/kg hfg = 2123.3 kJ/kg @ 104.3 kPa and 113.8°C: h2 = 2506.7 kJ/kg

1. What should be the water line gage pressure in the ground floor of a building so that water can rise up in the fifth floor which is 15m high? 2. Determine the volume occupied by a 2kg steam at 500kPa, under the following conditions: (a) pressure state (b) pure vapor state (c) 20% moisture content (d) 20% dry When P (kPa) = 500, T (°C) = 151.86, Vf (m³/kg) = 0.0019 and Vg (m³/kg) = 0.3749   3. An automobile tire contains a certain volume of air at 205kPa, and 20°C. The barometric pressure is 100kPa, if due to maintaining conditions the temperature of the air in the tire rises to 70°C, what will be the gage pressure? Assume that the air is an ideal gas and that the tire does not stretch.

A gas in the initial state of P1 = 75 psia and V1 = 5 ft.3 undergoes a process to P2 = 25 psia and V2 = 9.68 ft.3, during which the enthalpy decreases 62 BTU. The specific heat at constant volume is cy = 0.754 BTU/lb.°R. Determine (a) the change of internal energy, (b) the specific heat at constant pressure, (c) the gas constant R.

A vessel of volume 0.03m3 contains dry saturated steam at 17 bar. Determine the mass of the steam in the vessel and the enthalpy of this mass.

water contained in a closed, rigid tank, initially saturated vapor at 280 Celsius, is cooled to 100 Celsius. Determine the initial pressure, in MPa, and the final quality

5. 5 kg of H2O are contained in a closed rigid tank at an initial pressure of 20 bar and a quality of 50%. Heat transfer occurs until the tank contains only saturated vapor. Determine the volume of the tank, in m3, and the final pressure, in bar.

a rigid tank contains 50kg of saturated liquid water at 90 degrees Celcius. if you add heat to the tank, could you determine the change of the state?