Engineering, 05.12.2019 05:31 annieleblanc2004
5. an insulated, rigid tank is divided into two compartments by a frictionless, thermally conducting piston. one compartment initially contains 1 m3 of saturated water vapor at 4 mpa and the other compartment contains 1 m3 of water vapor at 20 mpa, 800°c. the piston is released and equilibrium is attained, with the piston experiencing no change of state. for the water as the system, determine (a) the final pressure, in mpa. (b) the final temperature, in °c. (c) the amount of entropy produced, in kj/k.
Answers: 1
Engineering, 04.07.2019 18:20
An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid
Answers: 3
Engineering, 04.07.2019 18:20
Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.
Answers: 2
Engineering, 04.07.2019 19:10
Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?
Answers: 3
Engineering, 04.07.2019 19:10
The proportional limit is always greater than the yield strength for a material. a)-trune b)- false
Answers: 3
5. an insulated, rigid tank is divided into two compartments by a frictionless, thermally conducting...
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