Question

In: Advanced Math

6. A 600-MW steam power plant, which is cooled by a nearby river, has a thermal...

6. A 600-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency of 35 percent. Determine the rate of heat transfer to the river water.

Solutions

Expert Solution

All heat energy cannot be completely converted into work energy, as no system is 100% efficient practically .

Part of energy supplied is used to get the required work and remaining energy is rejected to surrounding.(sink). which can be atmosphere , river ,etc capable to absorb large quantities of energy.

Colby Messinger answered 2 years ago
Next > < Previous

Related Solutions

A 400-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency...
A 400-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency of 33 percent. (i) Sketch an appropriate illustration for this heat engine clearly showing the heat source and sink. (ii) Determine the rate of heat transfer to the river water. (iii) Will the actual heat transfer rate be higher or lower than this value? Why?
The following data collected from a steam turbine of 25 MW capacity thermal power plant: Assume...
The following data collected from a steam turbine of 25 MW capacity thermal power plant: Assume R for air as 287 kJ/kg C Steam condensed = 40000 kh/hr Temperaure of steam in condenser =40 degree Dryness of steam enetring condenser = 0.85 Air leakage in the condenser = 140 kg/hr Temperature of codenser =35 degree Temperature at the suction of air pump = 32 degree Borometer reading = 76 cm of Hg Maximum rise in cooling water temperature =12 degree...
Consider a coal-fired steam power plant that produces 175 MW of electric power. The power plant...
Consider a coal-fired steam power plant that produces 175 MW of electric power. The power plant operates on a simple ideal Rankine cycle with turbine inlet conditions of 7 MPa and 550°C and a condenser pressure of 15 kPa. The coal has a heating value (energy released when the fuel is burned) of 29,300 kJ/kg. Assuming that 75% of this energy is transferred to the steam in the boiler and that the pump has an efficiency of 80% and the...
The net power of a combined gas-steam power plant is 450 MW. The pressure ratio of...
The net power of a combined gas-steam power plant is 450 MW. The pressure ratio of the gas turbine cycle is 14, the air enters the compressor at a temperature of 300 K and the turbine at a temperature of 1400 K. Combustion end gases coming out of the gas turbine produce steam at a waste heat boiler at 8 MPa pressure and 400 degrees Celsius temperature and exit the boiler at 460 K temperature. The steam cycle has an...
a.) What is the thermal efficiency of a steam power plant operating on the Rankine cycle...
a.) What is the thermal efficiency of a steam power plant operating on the Rankine cycle if saturated steam is supplied to the turbine at 1000 psia, and the condenser is at 1 psia. Use a turbine efficiency of 95% and a pump efficiency of 85%. Refer to Chapter 9, Sections 10-11, as necessary. b.) Determine the thermal efficiency if the steam is superheated to 1000 F, assuming all else equal.
A 1000 MW power plant of 35% thermal efficiency is proposed. The plant burns 3% sulphur...
A 1000 MW power plant of 35% thermal efficiency is proposed. The plant burns 3% sulphur coal with a heating value of 6000 Kcal/kg and emits 64000 m3/min of flue gas. What is the concentration of SO2 in the flue gas in ppm? Assume that the density of SO2 is 1920 g/m3.
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa....
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa. The Turbine has an isentropic efficiency of 85% and exhausts at 15 kPa. In the condenser, the water is subcooled to 38°C by lake water at 13°C. The pump isentropic efficiency is 75% Draw and label the T-s diagram (4 points) for this cycle and determine: 1. The cycle’s thermal efficiency (7 points) 2. The mass flow rate of the steam in the boiler...
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa....
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa. The Turbine has an isentropic efficiency of 85% and exhausts at 15 kPa. In the condenser, the water is subcooled to 38°C by lake water at 13°C. The pump isentropic efficiency is 75%. 1. Draw and label the T-s diagram for this cycle 2. Determine the cycle’s thermal efficiency 3. Determine the mass flow rate of the steam in the boiler (kg/h) 4. Determine...
A steam power plant operates on a regenerative Rankine cycle. Steam enters the turbine at 6...
A steam power plant operates on a regenerative Rankine cycle. Steam enters the turbine at 6 MPa at 700 ºC and the condenser at 10 kPa. Turbine has isentropic efficiency of 85% and pumps have isentropic efficiency of 90%. Steam is extracted from the turbine at 0.6 MPa to heat the feedwater in an open feedwater heater. Water leaves the open feedwater heater as saturated liquid. a) Draw the system with labels and show the ideal and the non-ideal cycle...
A steam power plant has two turbines in series which together develop a power output of...
A steam power plant has two turbines in series which together develop a power output of 25MW. The boiler supplies steam at 80 bar, 500°C to the high-pressure turbine in which there is an enthalpy drop of 420 kJ/kg. The exhaust from the high pressure is at a pressure of 15 bar, at which pressure some of the steam is delivered to an open-type feedwater heater while the remainder is reheated to 450°C. The steam from the reheater is expanded...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT