Determine the mass flow rate of air in the gas-turbine cycle

Assignment Help Civil Engineering

Reference no: EM131011271

The gas-turbine cycle of a combined gas-steam power plant has a pressure ratio of 8. Air enters the compressor at 290 K and the turbine at 1,400K. The combustion gases leaving the gas turbine are used to heat the steam at 15 MPa to ,450°C in a heat exchanger. The combustion gases leave the heat exchanger at 247°C. Steam expands in a high-pressure turbine to a pressure of 3MPa and is reheated in the combustion chamber to 500^oC before it expands in a low-pressure turbine to 10 kPa. The mass flow rate of steam is 30 kg/s. Assuming all the compression and expansion processes to be isentropic, determine (a) the mass flow rate of air in the gas-turbine cycle, (6) the rate of total heat input, and (0 the thermal efficiency of the combined cycle.

Reference no: EM131011271

Questions Cloud

The marketable securities are not cash equivalents : Prepare the supporting schedule that should accompany the statement of cash flows in order todisclose the non cash aspects of the company's investing and financing activities.

The firms net capital spending : The December 31, 2013, balance sheet of Schism, Inc., showed long-term debt of $1,425,000, $145,000 in the common stock account and $2,700,000 in the additional paid-in surplus account. The firm’s net capital spending for 2014 was $1,010,000, and the..

Reber company had a cash balance per books of : On May 31, 2014, Reber Company had a cash balance per books of $7,167.50. The bank statement from New York State Bank on that date showed a balance of $6,790.60. A comparison of the statement with the cash account revealed the following facts. Prepar..

Find the average cost and the marginal average cost function : What is the marginal cost when x = 1000 and 2000? Find the average cost function C‾ and the marginal average cost function C‾'.

Determine the mass flow rate of air in the gas-turbine cycle : Assuming all the compression and expansion processes to be isentropic, determine (a) the mass flow rate of air in the gas-turbine cycle, (6) the rate of total heat input, and (0 the thermal efficiency of the combined cycle.

The present value of the annuity will be less : Suppose that you are promised $100 per year for the next ten years. Which of the following statements is CORRECT for any r > 0? a. The present value of the annuity will be greater than $1,000. b. The future value of the annuity at t = 10 will be less..

Determine the current and predicted revenues-variable cost : Janet Gilbert is director of a lab. She has some extra capacity and has contracted with some small neighboring hospitals to run some of their lab tests. She has recently had a study conducted and has determined that her costs for these contracts are ..

How much money to put into your retirement plan : You have just turned 22 years old, received your bachelor's degree and accepted your first job. Now you must decide how much money to put into your retirement plan. The plan works as follows: Every dollar in the plan earnss 7% per year. You will cont..

What is the duration of this bond : You have discovered that when the required rate of return on a bond you own fell by 0.5 percent from 8.9 percent to 8.4 percent, the fair present value rose from $945 to $955. What is the duration of this bond? Assume annual payments.

User Account

All Pages