3. A steam power plant has an average monthly net power delivery of 740 MW over the course ofa year. This power delivery is accomplished by burning coal in the boiler. The coal has a heatingvalue of 9150 Btu/lbm. The cost of the coal is $14.20/ton. The overall thermal efficiency of theplant is,nthWnetQboiler0.26 = 26%Determine the annual cost of the coal required to deliver the given average monthly power.

Annual cost = Monthly cost x 12 months Annual cost = $5.474 x 10^6/month x 12 months Annual cost =…

Answered: 3. A steam power plant has an average…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.46P

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3. A steam power plant has an average monthly net power delivery of 740 MW over the course of a year. This power delivery is accomplished by burning coal in the boiler. The coal has a heating value of 9150 Btu/lbm. The cost of the coal is $14.20/ton. The overall thermal efficiency of the plant is, nth = Wnet Qboiler = 0.26 = 26% Determine the annual cost of the coal required to deliver the given average monthly power.
Thermal efficiency of a power cycle is 0.8. For the cycle, Wnet = 250 kJ. Determine Qout in kJ.
A certain coal-fired power plant has a rated power capacity of P = 950 MW. The output of this plant is W = 0.39QH, where QH is the energy input as heat from the hot reservoir. a. Calculate the maximum thermal efficiency of the power plant. b. Calculate the absolute value of the exhausted heat (QC) each second in MJ for the power plant. c. How many tons nC of this coal is exhausted as wasted heat to QC in a single day?
A split air conditioner is used to heat an office in winter and cool it in summer.For this purpose, a split air conditioner with a cooling power of 1200 Btuh (3.5 kw) is used for the office. The power drawn by the split air conditioner is 1.2 kw accordingly. a) COP value b) If the outdoor temperature of the air conditioner is kept 22 C in summer, calculate the limit values for heating and cooling COP if the outdoor temperature in summer is 42C and the outside temperature in winter is -6C
Thermodynamics PLEASE FILL UP THE TABLE WITH ALL NUMBERS. THANK YOU 9.17 A steam power plant operates with 5 MPa high pressure and boiler exit at 700°C, whereas the condenser exit is at 50°C. Find the cycle efficiency and the pressure in the turbine where the water enters the two-phase region.
The coefficient of performance (COP) for a vapor compression cycle chiller is 8.7. If the chiller can produce 58 tons of cooling. If the chiller operates for a total of 3568 hours annually, and the cost of electricity is $0.15 per kWh, how much does it cost to operate the chiller? Fill in the operating cost of the chiller in one year in $.
A refrigeration cycle operating Qout = 1000 Btu and Wcycle = 300 Btu. Determine the coefficient of performance for the cycle (NOT in %).
In a test of cycle steam power plant, the measured rate of the steam supply was 7.1kg / s when the net rate of work output was 5000Kw. The feed water was supplied to the boiler at a temp of 38 ° C, and the superheated steam leaving the boiler was at 1.4 Mpa and 300 ° C. Calculate the thermal efficiency of the cycle and the heat rate, what would be the heat rate when expressed in BTU of heat input per kWh of work output.
Estimate the greenhouse gas emissions from power production for the following threescenarios. Focus on the greenhouse gas emissions associated with theoperational energy, not the greenhouse gas emissions associated with the manufacture of theproduct or end of life processes.The hourly load demand for a home is given.1) All power during an hour of up to 5 kW is drawn from a baseload coal powerplant. Any power in excess of that amount is drawn from a peaker plant running as anatural gas combined cycle power plant.2) Localized solar energy production is provided in the table on the next page.Energy demand by the house is first met by this solar generation. If the total hourlyenergy demand is below 5 kW, then any extra energy required beyond that provided bythe solar panels is drawn from a coal power plant. If the total hourly demand is above 5kW, then any extra hour demand beyond 5 kW is met by a natural gas combined cyclepower plant. No credit is given if the solar energy production…
1.) Calculate the difference between the Heat Added to the Boiler and Heat Rejected from the condenser in Hp if the feedwater is supplied at a rate of 0.74 short ton for a third of an hour at 24 hours operation. The feedwater pump pressure is 74 bar from a condenser pressure of 74 kPa. Also determine the over-all cycle efficiency if the temperature of the steam entering the turbine is 740 degrees Celsius.
7. A bank of solar cells supplies power to a 95% efficient electric water heater. The area of the solar cell bank is 500 ft. The solar cell bank has a maximum theoretical efficiency of 31% and receives an incident solar flux of 150 W/m2. The heater boils water to make saturated steam at 30 psig to supply a turbine. Feedwater enters the boiler as saturated liquid at 140 deg.F. Calculate the total power in the bank. A. 7370 Btu/hr C. 7040 Btu/hr B. 7004 Btu/hr D. 7800 Btu/hr
Example A steam power plant operates on the cycle shown below. If the adiabatic efficiency of the turbine is 87% and the adiabatic efficiency of the pump is 85%. Determine. @ the thermal efficiency of the cycle. @ the net power output of the plant for output of the plant for mass flow rati = 15 kg S Solution * P=15.2 MPa, T=625°C (super) H₁ = 16MP Wp 9KP 38°C 15.9KPa 35°C 4 +-1B | ₁ В P 3 P=15.2MPa T=625°C HC. BLOK PO P=15M Pa T = 600°C D WT P₂=10K Pa

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