Chapter 8, Problem 8.10E

Write systematically how is solar thermal energy captured using solar power towers? Explain with a suitable diagram.

Assess the mechanisms of energy transfer involved in generating the electrical power supply in Nuclear power plant.

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

why natural gas based combined cycle power plants are more efficient comparing to open cycle natural gas based power plants?

Is renewable energy really the solution to the emerging power crisis?

2. The maximum thermal efficiency possible for a power cycle operating between 1200°F and 225°F is: 58.73%

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?

1. A geothermal-based trigeneration plant produces 2.5 MW of electricity, 1.8 MW of process heat, and 1.4 MW of cooling. Electricity is produced for a period of 7500 h, heating for 2500 h, and cooling for 2000 h per year. The energy of geothermal plant consumed in the plant is 4 × 107 kWh during an entire year period. Determine the annual average utilization factor of this plant.

A steam turbine generator unit consumes 27 MTPH of steam at 1.2 MPa and 325oC where its condensate leaves at 22oC. For a brake steam rate of 4.75 kg/kWh, mechanical efficiency of 90%, and generator efficiency of 97%, calculate (a) the brake thermal efficiency, (b) the generator output, in MW, and (c) the combined engine efficiency.