Chapter 8, Problem 8.9DOEP

The gas turbine in the power generation building is a vital element of the performance and financial viability of the whole plant.  Investigate the principles of operation of the gas turbine and relate your findings to the design, running and maintenance of such a system.

You are an engineer in an electric-generation station. You know that the flames in the boiler reach a temperature of 1200 K and that cooling water at 300 K is available from a nearby river. What is the maximum efficiency your plant will ever achieve?

Answer the following questions Q1: Give three examples of conventional power plants and five examples of non-conventional power plants? What do you think which one is better and why? Q2: Why nuclear power plants are important and why the fission process is used in all present nuclear power plants? Q3: The flue gases produced are passed through .and finally exhausted into the atmosphere through... Q4: Does including pre-heater increase the power plant efficiency? Why? Q5: How do cooling towers work and why they are important for thermal power plants? And are they essential in a country like Iraq? Q6: Why the site selection of a power plant is important?

Discuss the importance of thermodynamics knowledge in the design and analysis of conventional power plants

A regional electric utility company has a power plant with 1000 MW of electricity. The overall thermal efficiency of the power plant is 25%. The fuel used in the plant is an oil with a heating value of 5.00 ´106 kJ/kg and costs PHP 3.75 per liter. The density of the oil is 0.90 kg/L. Determine: (a)      the daily fuel requirement (kg) when the plant runs at maximum capacity.(b)      the daily fuel cost (PHP) of running the plant at maximum capacity.There are two answers: one for (a), one for (b).

As shown in the figure, a reversible power cycle R and an irreversible power cycle I operate between the same hot and cold thermal reservoir. Cycle I has a thermal efficiency equal to one-third of the thermal efficiency of cycle R. (b) If each cycle develops the same net work, determine which cycle (i) receives greater energy by heat transfer from the hot reservoir, (ii) discharges greater energy by heat transfer to the cold reservoir. WR R Hot reservoir m Qc=QH-WR l'c=QH-W₁ Cold reservoir W₁

How do heat transfer and energy transformation affect heat engines in electricity production?

A diesel power station has a fuel consumption of 0.37 lb/kWh, the calorific value of fuel being 20,000 BTU/lb. Determine the engine efficiency if the generator efficiency is 95% neglect brake power on the engine.

If the efficiencies of a power plant, turbine and generator (in the power plant) are 0.36, 0.5 and 0.9 respectively, then the thermal energy produced from 95*10^5 Cal of coal in the boiler is kcal --- O 7600 O 11875 76*10^5 O 118.8*10^5