Chapter 6, Problem 6.80P

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.

9. Air is expanded from 400 kPa, 600 K in a polytropic process to 150 kPa, 400 K in a piston cylinder arrangement. Find the polytropic exponent n and the work and heat transfer per kg air using constant heat capacity.

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)

1 kg of steam expands isentropically from 2.5 MPa & 300 Degrees Celsius to .95 MPa. Find the final quality and Wn, Ws.

of air at 300 K and 150 kPa. It's now heated in a two- Q: A piston cylinder contains 1.5 step processes: first by a constant volume process to 1000 K second a constant pressure process to 1500 K. find the heat transfer for this processes.

With 3% moisture, 2kg of steam has an enthalpy of 6600KJ. It is heated at constant pressure to a final a final condition of 80 degree superheat. Find pressure of the process and the quantity of heat received by the steam

A Dry into the Saturated steam at 15 bar entering Dry no33yle Comes out at 2 bar and o-96 dry ) Find out the exit velocity of the steam neglecting entry velocity 6i) if 101. of heat drop is lost in f riction, find out the o seduction in exit velocity.

find the work posses for a carbon dioxide gas at 1958.76 C in kj/kg. use W=mRT

one kg of steam expands isentropically from 25mpa and 300 degrees to 0.95mpa.find the final quality and Wn and Ws