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Estimate the total energy (BTU/train) transported by this coal train? Assume an average coal car can hold 120 tons of coal and the density of the coal is 19.5 million BTU/short ton.

Estimate the total energy (BTU/train) transported by this coal train? Assume an average coal car can hold 120 tons of coal and the density of the coal is 19.5 million BTU/short ton.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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On the way to a meeting in your car, you get stuck at a railroad crossing due to a coal train. You are bored and the first car in line, so you start counting coal cars which look to be full. You count 125 cars for the train. a) Estimate the total energy (BTU/train) transported by this coal train? Assume an average coal car can hold 120 tons of coal and the density of the coal is 19.5 million BTU/short ton. b) How much electricity (kWh) could the coal in this train produce in a 500 MW coal pla inning with a capacity factor of 85% and an efficiency of 35%? (1 kWh = 3413 Btu) Hint: this is for the single train, and you wont need all the given numbers to solve. c) How many full trains of coal are required per year to supply the Coal Plant? Hint: use given information from above. You'll want to calculate Esec for the year first. You'll then use the Esec per train that you calculated in step b.
Transcribed Image Text:On the way to a meeting in your car, you get stuck at a railroad crossing due to a coal train. You are bored and the first car in line, so you start counting coal cars which look to be full. You count 125 cars for the train. a) Estimate the total energy (BTU/train) transported by this coal train? Assume an average coal car can hold 120 tons of coal and the density of the coal is 19.5 million BTU/short ton. b) How much electricity (kWh) could the coal in this train produce in a 500 MW coal pla inning with a capacity factor of 85% and an efficiency of 35%? (1 kWh = 3413 Btu) Hint: this is for the single train, and you wont need all the given numbers to solve. c) How many full trains of coal are required per year to supply the Coal Plant? Hint: use given information from above. You'll want to calculate Esec for the year first. You'll then use the Esec per train that you calculated in step b.
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