Chapter 6, Problem 6.50P

Air at 200kPa, 30°C is contained in a cylinder behind a piston with initial volume of 0.1 m3. The inside pressure balance ambient pressure of 100 kPa plus an external imposed force that proportional to , Now heat is transfer to the system to final pressure of 225 kPa. Find the work done for this 5- process. (8.65 kJ)

A piston/cylinder has a volume of 0.05 m3 and contains steam at 500 kPa with a quality of 90%. Heat is added at constant pressure until the steam is a saturated vapor. Find the heat and work in kJ.

Thermodynamics problem. A 5m3 rigid container containing water of 80% quality and a pressure of 2MPa. If the pressure is reduced to 400KP a by cooling the container, find the final mass of the vapor mg and the mass of the liquid mf .

An automobile tire is inflated to 105 kPa at 30 deg. C. After being driven the temperature rises to 55 deg. C. Find the final pressure under isochoric process.

A piston cylinder has 2.2kg of air at 300 K and 150 kPa. It is now heated up in a two step process. First constant volume to 1000 K (state 2) then followed by a constant pressure process to 1500 K, state 3. Find the final volume and final pressure.   (R of air = 0.287 KJ/kg K)

Can you solve this problem (full solution) for my thermodynamics subject. Thank you 4. Five kg of water vapor are contained at 150 kPa and 90 percent quality in a suitable enclosure. Calculate the heat which must be added in order to just produce a saturated vapor. What will the pressure be at the end of the heating process?     Ans. 1045.5 kJ, 168 kPa.

Solve it correctly please and show all steps with steam table findings.

A piston / cylinder contains 2 kg of air at 27 °C and 200 kPa. The piston is loaded with a linear spring, mass and the atmospheric pressure. Stops are mounted so that Vstop is 3m' at which the pressure is 600 kPa, see figure 2. The air is now heated to 400 kPa. Find the final volume and the work done. 2.

2. Water as saturated vapor at 70 bar is heated at in a rigid vessel until its pressure reaches 100 bar. By using steam table, a. find the final T (°C), Au and Ah (kJ/kg) b. assuming an ideal gas, calculate Ah (kJ/kg) do the energy balance to find q (kJ/kg)? 3. Determine the internal energy change of hydrogen in kJ/kg as it heated from 76.85 °C to 526.85°C by using: a. empirical molar specific heat data from Table A-2(c) b. specific heat at the average temperature from Table A-2(b). C. the 300 K value for the specific heat from Table A-2(a).