Energy costs vary greatly with energy source: coal @ $35.00/ton, gasoline @ a pump price of $2.75/gal, and electricity @ $0.100/kW·h. Conventional practice is to put these on a common basis by expressing them in $⋅GJ−1. For this purpose, assume gross heating values of 29 MJ⋅kg−1 for coal and 37 GJ⋅m−3 for gasoline. (a) Rank order the three energy sources with respect to energy cost in $⋅GJ−1 . (b) Explain the large disparity in the numerical results of part (a). Discuss the advantages and disadvantages of the three energy sources
Energy costs vary greatly with energy source: coal @ $35.00/ton, gasoline @ a pump price of $2.75/gal, and electricity @ $0.100/kW·h. Conventional practice is to put these on a common basis by expressing them in $⋅GJ−1. For this purpose, assume gross heating values of 29 MJ⋅kg−1 for coal and 37 GJ⋅m−3 for gasoline. (a) Rank order the three energy sources with respect to energy cost in $⋅GJ−1 . (b) Explain the large disparity in the numerical results of part (a). Discuss the advantages and disadvantages of the three energy sources
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Energy costs vary greatly with energy source: coal @ $35.00/ton, gasoline @ a pump price of
$2.75/gal, and electricity @ $0.100/kW·h. Conventional practice is to put these on a common
basis by expressing them in $⋅GJ−1. For this purpose, assume gross heating values of 29 MJ⋅kg−1
for coal and 37 GJ⋅m−3
for gasoline. (a) Rank order the three energy sources with respect to energy
cost in $⋅GJ−1
. (b) Explain the large disparity in the numerical results of part (a). Discuss the
advantages and disadvantages of the three energy sources
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