Question

How to create a Power Cycle with 3 temperatures (T high, T middle, and T low)?

How to create a Power Cycle with 3 temperatures (T high, T middle, and T low)?

Engineering   Mechanical-Engineering   
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
Construct a Carnot PV-cycle for an ideal gas with high temperature Thigh and low temperature Tlow....
Construct a Carnot PV-cycle for an ideal gas with high temperature Thigh and low temperature Tlow. Remember that the top and bottom legs are isotherms (constant temperature), so PV=NkT for the start and endpoints of those legs. The side legs must satisfy the condition that Delta(Q)=0. For your cycle, estimate 1) the work done for each step (it will be helpful to have a piece of graph paper), 2) the change in internal (heat) energy, 3) the total sum of...
A steam power plant runs on a reheat Rankine cycle. Steam enters both the high and...
A steam power plant runs on a reheat Rankine cycle. Steam enters both the high and low pressure turbines at 500oC. The maximum and minimum pressures of the cycle are 10 MPa and 10 kPa, respectively. Steam leaves the condenser as a saturated liquid. The moisture content of the steam at the exit of the low-pressure turbine is 4% if the actual expansion process is adiabatic; 8.5% if the ideal expansion process is isentropic. The isentropic efficiencies of the high-pressure...
Boyle's and Charles's laws become unreliable at high pressures and low temperatures. Why?
Boyle's and Charles's laws become unreliable at high pressures and low temperatures. Why?
Heat capacity of solids at low temperatures follows Debye's law, c~T^3, where c is the heat...
Heat capacity of solids at low temperatures follows Debye's law, c~T^3, where c is the heat capacity, and T is the temperature in kelvin. Assume that for some particular sample 10J of heat is required to increase the sample's temperature twice from 10K to 20 K. How much heat would be needed to heat that sample from 20K to 40K? Please show steps/assumptions. Thanks,
A machine follow Carnot which is working between the temperatures TL = 45.9 0 C and...
A machine follow Carnot which is working between the temperatures TL = 45.9 0 C and TH = 698.7 0 C. The engine performs 1423 J of work each cycle which takes 0.32 sec. a. What is the efficiency of this machine? b. What is the average power of this machine? c. How much heat is extracted from the high-T reservoir each cycle? d. Explain the loss of power and how to optimize it?
A machine follow Carnot which is working between the temperatures TL = 45.9 0 C and...
A machine follow Carnot which is working between the temperatures TL = 45.9 0 C and TH = 698.7 0 C. The engine performs 1423 J of work each cycle which takes 0.32 sec. a. What is the efficiency of this machine? b. What is the average power of this machine? c. How much heat is extracted from the high-T reservoir each cycle? d. Explain the loss of power and how to optimize it?
Consider a combined gas-steam power cycle. The topping cycle is a simple Brayton cycle that has...
Consider a combined gas-steam power cycle. The topping cycle is a simple Brayton cycle that has a pressure ratio of 7. Air enters the compressor at 15 ºC at a rate of 10 kg/s and the gas turbine at 950 ºC. The bottoming cycle is a reheat Rankine cycle between the pressure limits of 6 MPa and 10 kPa. Steam is heated in a heat exchanger at a rate of 1.15 kg/s by the exhaust gases leaving the gas turbine,...
A steam power cycle can be characterized by the pressures between which it operates. The turbine...
A steam power cycle can be characterized by the pressures between which it operates. The turbine provides the work out with a high pressure inlet and low pressure outlet. The pump does the opposite, namely increase the pressure from a low value to a high value. For a power plant operating between 7 MPa and 15 kPa, determine the ratio of the work delivered by the turbine to the work consumed by the pump. Assume the cycle is completely reversible...
Explain why A) If heat flows from high to low temperatures, the entropy change in any...
Explain why A) If heat flows from high to low temperatures, the entropy change in any process cannot be negative. B) The specific heat of any substance is always lowest in the vapor (gas) phase.
QUESTION 5 A steam power plant is designed to operate on a reheat Rankine cycle to...
QUESTION 5 A steam power plant is designed to operate on a reheat Rankine cycle to produce 115 MW of a net power output. Due to metallurgical limitation, the high-pressure turbine is limited to operate at maximum pressure and temperature of 15 MPa and 650°C, respectively. The lowpressure turbine is to operate at maximum pressure and temperature of 3.5 MPa, and 500°C, respectively. Both high and low pressure turbines have maximum isentropic efficiency of 87 percent. The maximum reheat pressure...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT