Physics, 03.07.2019 04:30 Davon21

Asteam turbine operates with the following inlet conditions: 3000 kpa and 800°c and 10 m/sec. steam exits the turbine at 100 kpa, 80% quality and 22 m/sec. an inventor claims to have fabricated an adiabatic turbine with these inlet and outlet conditions and wants you to invest your hard earned money in his/her company a) how would you evaluate this claim? will you invest in this company? explain. b) the inventor then states that he/she made a mistake and that the turbine isn't in fact adiabatic and that there is heat lost or gained from the surroundings. could you calculate the amount of this heat transfer in kws per kg/s of steam flowing through the turbine assuming the stated exit condition of 80% quality steam is correct? c) and finally the inventor states that the turbine operates with the surrounding temperature at 300 k. does the device in part (b) now violate the second law?

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 12:30

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Answers: 1

Answer

Physics, 22.06.2019 17:00

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?

Answers: 1

Answer

Physics, 22.06.2019 21:30

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?

Answers: 2

Answer

Physics, 23.06.2019 02:00

How did the germans define who was jewish?

Answers: 1

Answer

You know the right answer?

Asteam turbine operates with the following inlet conditions: 3000 kpa and 800°c and 10 m/sec. steam...

Questions