Chapter 8, Problem 8.22P

Q4: A 600 MW heat engine, which is cooled by water, the thermal efficiency of engine is 0.15 heat reject in engine. Determine the

A constant-pressure piston/cylinder assembly con- tains 0.2 kg of water as saturated vapor at 400 kPa. It is now cooled so that the water occupies half of the original volume. Find the work and heat trans- fer for the process.

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

A cylinder/piston arrangement contains 0.1 kg R-410A of quality x = 0.2534 and at -20°C. Stops are mounted so Vstop = 3V1, see Fig. below. The system is now heated to the final temperature of 20°C. Find the work and heat transfer in the process and draw the P-v diagram. Po cb R-410A

i need the answer quickly

THERMODYNAMICS A certain gas expand from 7ft3 to 23ft3 while the pressure remains constant at 17.5psia. Find the work nonflow in the system in BTU.

An insulated chamber containing 2 L of saturated liquid water at 300 kPa constant pressure. There is a piston-cylinder assembly. One with an electric heater inside the cylinder There is a mixer. Then the water is mixed by the mixer for a while. s mixed, as well as connected to 220 volt electrici supply and 8 A current through neated by the passing heater. This state change at constant pressure 500 kJ of work is done by the mixer. Meanwhile, iquid 90 percent by mass evaporates. a) Plot the state change on T-v and P-v diagrams, paying attention to saturation lines. D) Calculate the operating time of the electric heate

A cycle HE does 60kJ of work per cycle. If the efficiency of the heat engine is 60%. The heat rejected per cycle is.

Find the mass of water that can be cooled from 26°C to-10°C from a 20 tons refrigeration system for 14 hrs.