The steam entering the turbine in a coal-burning power plant is heated to 500 celsius. The steam is cooled and condensed to water at 80 celsius.

A power plant has an overall efficiency of 40%. The plant generates 40 MW of electricity and uses coal from Utah (see the table below) as fuel. The Typical Heating Value of Some Coal Coal from County and State of Higher Heating Value (Btu/lbm) Musselshell, Montana 12,075 Emroy, Utah 13,560 Pike, Kentucky 15,040 Cambria, Pennsylvania 15,595 Williamson, Illinois 13,710 McDowell, West Virginia 15,600 Determine how much coal must be burned (in lbm/h) to sustain the generation of 40 MW of electricity.  lbm/h

Part a and b please

Suppose an old power plant uses steam turbines to produce 0.5 GW (5 x 108 W) of electricity. The turbines take in steam at a temperature of 600°C, and waste heat is expelled into the environment at 30°C. (a) If the plant operates at its maximum efficiency, at what rate does it expel its waste heat into the environment? Assume the cold reservoir for this plant is a river whose flow rate is 80 m³/s. By how much will (b) the temperature of the river increase due to the waste heat expelled by the plant? (c) environment), the plant could instead be cooled by evaporating river water. At what rate would the To avoid increasing the temperature of the river water (which may be harmful to the water have to be evaporated to cool the plant, assuming the latent heat to evaporate water at the relevant temperature is 2400 J/g? If the plant is upgraded such that the turbines take in steam at 650°C, and the plant operates at (d) its maximum possible efficiency, how much additional power is generated as…

Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. The compressor consumes 1.24 kW of power. Use data from the tables. 800 kPa x=0 Jo Expansion valve 19H Condenser Evaporator QL Compressor 800 kPa 35°C Determine the rate of heat absorption from the outside air. The rate of heat absorbed from the outside air is W₁ kW.

I need help on this assignment: Exhaust gases from the turbine of a simple Brayton cycle are quite hot and may be used for other thermal purposes. One proposed use is generating saturated steam at 110℃ from water at 30℃ in a boiler. This steam will be distributed to several buildings on a university campus for space heating. A Brayton cycle with a pressure ration of 6 is to be used for this purpose. Plot the following:(a) The mechanical power produced,(b) the flow rate of the produced steam,(c) the maximum cycle temperature, all as functions of the rate at which heat is added to the cycle.

Please please solution

Required information Refrigerant-134a enters the condenser of a steady-flow Carnot refrigerator as a saturated vapor at 65.0 psia, and it leaves with a quality of 0.05. The heat absorption from the refrigerated space takes place at a pressure of 30 psia. Determine the coefficient of performance. (Round the final answer to three decimal places.) The coefficient of performance is

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

A diesel engine has a compression ratio of 15 and heat addition at constant pressure . And the air standard efficiency of the engine is 60%. find the cut off ratio . Take y for air as 1.4.