Question

A power plant burns 900kg of coal per hour and produces 480kw of power.if each kg...

A power plant burns 900kg of coal per hour and produces 480kw of power.if each kg of coal releases 5,9MJ, determine the efficiency of the plant

b)air enters the nozzles at 3,0 bar, 1270C and 30m/s.During its passages a heat loss of 4,40kj/kg and the fluid leaves at 2,0 bar and 270m/s.the heat loss to environment ioccurs at 270c. calculate the final temperature,the entropy change of air and the total entropy change of the overall process, is the process reversible,irrevessible or impossible?

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
13)  A turbine, operating under steady-flow conditions, receives 5000 kg of steam per hour. The steam enters...
13)  A turbine, operating under steady-flow conditions, receives 5000 kg of steam per hour. The steam enters the turbine at a velocity of 3000 m/min, an elevation of 5 m and a specific enthalpy of 2787 kJ/kg. It leaves the turbine at a velocity of 6000 m/min, an elevation of 1 m and a specific enthalpy of 2259 kJ/kg. Heat losses from the turbine to the surroundings amount to 16736 kJ/h. Determine the power output of the turbine. 14) 12 kg...
1-The temperature value inside a reactor in the treatment plant is 30 0C during operation. The...
1-The temperature value inside a reactor in the treatment plant is 30 0C during operation. The outdoor temperature in the winter period is 5oC. The wall thickness of the reactor is 0.10 m and its area is 20 m2. Air and reactor wall heat transfer coefficients and conductivity are given below. reactor = 20W / m2.K, creator = 0.8 W / m.K; outdoor environment = 10 W / m2.K a. Under these conditions, calculate the heat loss value from the...
1) A nozzle is a device for increasing the velocity of a steadily flowing stream of...
1) A nozzle is a device for increasing the velocity of a steadily flowing stream of fluid. At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. (i) Find the velocity at the nozzle exit. (ii) If the inlet area is 0.1 m2 and specific volume...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT