In 1981, the U. S. consumption of energy (in quads) from various sources was as follows:coal, 16.1; oil 32.1; natural gas, 20.2; hydro, 2.9; and nuclear, 2.9. Calculate in gigawatthoursthe total electric energy that could be produced from these sources, assuming an averagepower-plant conversion efficiency of 0.1.

Approach to solving the question:Summing total energy then applying Unit conversion and accounting…

Answered: In 1981, the U. S. consumption of…

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem BCSQ

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A steam power station of (3* 1.5) MW has an overall efficiency of 32% If the fuel bir has an calorific value of 7500 calorific/kg. With neglect the transmission line losses.Find the fuel consumption for one day if the station supply a daily load his demand is as follow- From From 6pm to 9p.m to Time From midnight From From 5a.m.to 11am to to Sam 11am 6p.m 9p.m midnight Load(kw) 300 1400 900 1800 600
Consider the annual electricity generation data in the table below. Assume an average 34% efficiency for power plants and a heating value of approximately 1,000 Btu/ft3 (22,000 Btu/lbm). Electricity Generation by Fuel, 1980-2030 (billion kilowatt-hours) + Year Petroleum Natural Gas Nuclear 1980 1,161.562 245.9942 Coal 1990 1,594.011 126.6211 Enter a number. 2000 1,966.265 111.221 2005 2,040.913 115.4264 2010 2,217.555 104.8182 2020 2,504.786 106.6799 2030 3,380.674 114.6741 How many Btu are equal to 1 kWh? 3412.14 Btu …………… ✓ 346.2399 372.7652 601.0382 751.8189 773.8234 1,102.762 992.7706 251.1156 284.6883 Renewable/Other 576.8617 357.2381 753.8929 356.4786 774.0726 375.8663 808.6948 870.698 475.7432 515.1523 projected values 870.5909 559.1335 projected values For year 1980, convert the amount of electricity generated from natural gas from kWh to Btu. 346.2399 X Btu For year 1980, how much energy is required in Btu from natural gas to generate electricity? XBtu
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predicts that coal will decrease from a 24% share of US electric generation in 2020 to a 13% share in 2050. This is while the total annual US electric generation is predicted to rise from about 4000 billion kWh in 2020 to about 5400 billion kWh in 2050. Growth in renewable energy sources are predicted to make up for the decline in coal-based electric generation. Using the figure of 1000 kg/MWh of CO2 , what is the expected reduction in annual CO2 emissions due to this decline in the coal-based generation?

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