A coal-fired power plant is burning bituminous coal that has an energy content of 12,000 Btu/lb. The power plant is burning the coal at a rate of 110 lb/s. The efficiency of the powerplant is 33%, which means that 67% of the total energy from the coal is lost as waste heat. a. A new heat exchanger is installed that is capable of using 0.12% of the waste heat to heat an air stream for use in another process in the plant. The air enters the heat exchanger at a volumetric flow rate of 2,000 acfm at 298 K and 1 atm. Assuming the heat exchanger is 90% efficient (i.e., 90% of the heat supplied to the heat exchanger is transferred to the air stream), at what temperature will the air leave the heat exchanger, assuming an exit pressure of 1 atm? Use an average specific heat of 0.244 Btu/lb-°R. b. What will be the volumetric flow rate of the gas leaving the heat exchanger (in units of acfm)? c. If the air exiting the heat exchanger has a moisture content of 12% (v/v), what is the moisture-corrected dry flow rate (in units of dry standard cubic meters per minute) at STP (1 atm, 298 K)?
A coal-fired power plant is burning bituminous coal that has an energy content of 12,000 Btu/lb....
1. Calculate the primary NAAQS concentration limit for 502 in units of ug/m' at standard temperature and pressure (STP:T - 25*C, P = 1 atm). 2. Fuel X9-6000 is 95.8% efficient in an airplane engine. The unburned fuel leaves as VOCS in the exhaust. For each kg of fuel X9-6000 (Molecular Weight, MW-98), the engine exhausts 20 kg of gases (MW = 28 g/mol). What is the fraction of VOCs in the exhaust (ppm)? ncinerator burns 30 tonnes of plastic...
A 350 MW coal-burning power plant consumes 4478 tons of coal per day when it operates at full load. Given the energy content of the coal used in this power plant 21 million Btu/ton, what is the heat rate of this power generation plant?
A 350 MW coal-burning power plant consumes 4478 tons of coal per day when it operates at full load. Given the energy content of the coal used in this power plant 21 million Btu/ton, what is...
A typical large coal fired electric power plant produces 1,200MW of electricity by burning fuel with energy content of 3,000 MW. Three hundred and forty (340) MW are lost as heat up the smokestack leaving the rest to drive a generator to produce electricity. However, the thermal efficiency of the turbine is only 45%. That is 45% of the remaining power goes to drive the generator, and 55% is waste heat that must be removed by cooling water. Assume that...
Engine Cycles a) Bituminous coal has an energy content of 3.0 x 107 J/kg. A coal-fired generating plant is 40% efficient and produces 500 MW of electrical power. How many kilograms of coal must be burned each second to run the plant and how much thermal energy is ejected into the environment?
An industry is proposing to construct a new coal-fired power plant that produces 2300 MW electricity with efficiency of 39%. Coal has a heating value of 10,750 Btu/lb, and contains a sulfur content of 2.4%. It is expected that 95% of sulfur will be converted to SO2. The New Source Performance Standards (NSPS) limits the SO2 emission rate from any coal-fired power plants to 1.2 lb/ 106 Btu heat input. a) Determine coal consumption in lb/ hr b) Determine SO2...
A coal-fired power plant proposes to burn 3% sulfur coal with a heating value of 11,000 Btu/lb. If the plant is to meet the standard of performance given by EPA New Source Performance Standards (NSPS), what percent cleanup is required for SO2? What percent sulfur could the coal contain if the standards are to be met with no clean-up devices?
Question 8 0 out of 10 points A 125 Mw coal-burning power plant is 33% efficient when it operates at full load. Given the heat content of the coal used in this power plant 19 million Btu/ton, what is the daily coal consumption in tons? Selected Answer: [None Given] Correct Answer: 1,633 * 1%
Fairfax Furnaces, Inc. operate a power plant that includes a coal fired boiler to product steam to drive a generator. They are aware that they need to replace the old boiler due to emission issues. The company can purchase four different types of coal from West Virginia and blend them to meet the requirements for burning in the boiler. The following table shows the characteristics of the different types of coal: The required BTU/pound must be at least 11,900. In...
20.54---- A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency of 38%. a) What is the rate of heat input to the plant? b) The plant burns anthracite coal, which has a heat of combustion of 2.65×107J/kg. How much coal does the plant use per day, if it operates continuously? c) At what rate is heat ejected into the cool reservoir, which is the nearby river? d) The river's temperature is 18.0 ∘C...
Thermal pollution in wastewater. A 1000-MW coal-fired power plant with an efficiency of 35% uses water from a neighboring stream (with flow of 75 m3/s and 20°C) to carry away waste heat. About 12% of waste heat goes up in the smokestack; the remaining 88% is taken away by cooling water. (a) Calculate the amount of waste heat (inkWorkJ/s) to be removed by cooling water (b) If the cooling water is only allowed to rise in temperature by 11°C, what...