How much annual CO2 emissions (in tons per year) would be avoided if the USA doubles its hydroelectric capacity and reduces the coal-fired power plants at the same time? The average overall thermal efficiency of the coal-fired power plants is 36% and the heating value of carbon is 32,700 kJ/kg.

In a gas turbine, the temperature of the working fluid at inlet to the compressor is 286 K and outlet 430 K. At inlet to the turbine, the working fluid has a temperature of 1,087 Kand exhausts from the turbine at a tempeature of 737 K. The specific heat capacity of the working fluid at constant pressure is 1.005 kJ/kg.K. Determine the efficiency of the plant?

A coal-fired power plant is planned to be set up , aiming to produce a net power output of 60 MW. The power plant will operate on a reheat Rankine cycle. The steam enters the high-pressure turbine at a pressure of 7 MPa and a temperature of 400°C, while it enters the low-pressure turbine at a pressure of 2 MPa and the same temperature of 400°C. After going through the turbine, the steam is condensed in the condenser and exits as a saturated liquid at a pressure of 15 kPa. The electric generator has an efficiency of 96% and the pump has an isentropic efficiency of 90%. The heating value of the coal is 29.30 MJ/kg,   analyze the given scenario to find the required amount of coal in tons to run the power plant for a month.   also, draw the schematic diagram.   need step-by-step solution and perfect calculations.

A steam cycle to be installed between a geothermal at 255 ° C and a lake at 15 ° C will have 90MW heat transfer to the boiler of the power plant and 30MW to the stream. What should be the thermal efficiency of the steam power plant so that the electric power produced by this power plant is maximum? A-0.38B-0.45C-0.56D-0.64E-0.78   (Note: This question is Turkish) orginal question: 255 ºC de bir jeotermal ile 15 ºC’deki bir göl arasına kurulacak bir buhar çevrimi ile çalışacak güç santralinin kazanına 90MW ısı geçişi ve akarsuya ısı kaybı 30MW olmaktadır. Bu güç santralinin ürettiği elektrik gücünün maksimum olması için buhar santralinin ısıl verimi ne olmalıdır?

A steam power plant with a power output of 170 MW consumes coal at a rate of 60 tons/h. If the heating value of the coal is 30,000 kJ/kg, determine the overall efficiency of this plant. The overall efficiency of the plant is 9.44 %.

Water is the working fluid in a Carnot vapor power cycle. Saturate liquid enters the boiler at a pressure of 10 MPa, and saturated vapor enters the turbine. The condenser pressure is 6 kPa. Determine (i) the thermal efficiency, (ii) the back work ratio, (iii) the heat transfer to the working fluid in the boiler, and (iv) the heat transfer from the working fluid in the condenser. In part B of the problem, irreversibilities in the adiabatic expansion and compression processes cannot be neglected. If the states at the turbine and pump inlet remain unchanged, repeat parts (i-iv) for the modified Carnot cycle with 77T = 0.80 and ŋp = 0.70. Finally, calculate the rate of entropy generation in modified Carnot cycle having irreversibilities.

I keep doing the math and coming up with different answers Please provide steps to get the correct outcome Thank you

NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 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 1400 K. 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 3 MPa and is reheated in the combustion chamber to 500°C before it expands in a low-pressure turbine to 10 kPa. The mass flow rate of steam is 12 kg/s. Assume isentropic efficiencies of 100 percent for the pump, 85 percent for the compressor, and 90 percent for the gas and steam turbines.       A.) Determine the mass flow rate of air in the gas-turbine cycle. Use steam tables and the table containing the ideal-gas properties of air.   The mass flow rate of air in the gas-turbine cycle is ___?___kg/s…

A steam power plant operates on the cycle shown in Fig. 10-5. If the isen- tropic efficiency of the turbine is 87 percent and the isentropic efficiency of the pump is 85 percent, determine (a) the thermal efficiency of the cycle and (bi the net power output of the plant for a mass flow rate of 15 kg's. 15.9 MPa 15.2 MPa 35°C 625 C Boiler 1S MPa 600 C O 16 MPa Wihat Turbine = 087 Pump Of 10 kPa 9 AP 38°C Condenser

A heat engine produces 50 kW of power while consuming 50 kW of heat from a source at 1390 K, 70 kW of heat from a source at 1690 K , and rejecting the waste heat to the atmosphere at 300 K. Part A Determine the reversible power. Express your answer to three significant figures and include appropriate units. ? Value Units Submit Request Answer Part B Determine the rate of exergy destruction (I) in the engine's universe. Express your answer to three significant figures and include appropriate units. HẢ Value Units