\begin{tabular}{|l|l|l|l} Year & Coal & Petroleum & \begin{tabular}{l} Natural \\ Gas \end{tabular} \\ \hline 1980 & 1161.562 & \( \mathbf{2 4 5 . 9 9 4 2} \) & \( \underline{346.2399} \) \\ \hline 1990 & 1594.011 & \( \mathbf{1 2 6 . 6 2 1 1} \) & \( \underline{372.7652} \) \\ \hline 2000 & 1966.265 & 111.221 & \( \underline{601.0382} \) \\ \hline 2005 & 2040.913 & \( \mathbf{1 1 5 . 4 2 6 4} \) & \( \underline{751.8189} \) \\ \hline 2010 & 2217.555 & \( \mathbf{1 0 4 . 8 1 8 2} \) & \( \underline{773.8234} \) \\ \hline 2020 & 2504.786 & \( \mathbf{1 0 6 . 6 7 9 9} \) & 1102.762 \\ \hline 2030 & 3380.674 & \( \mathbf{1 1 4 . 6 7 4 1} \) & \( \underline{992.7706} \) \\ \hline & & & \\ \hline \end{tabular} Data from U.S. Department of Energy. 13.19 Assuming an average 35\% efficiency for power plants and a heating value of approximately \( 1000 \mathrm{Btu} / \mathrm{ft}^{3}(22,000 \mathrm{Btu} / \mathrm{lbm}) \), calculate the amount of natural gas required in \( \mathrm{ft}^{3} \) and \( \mathrm{lbm} \) for generating electricity for each year shown in the table.
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To do this, we need to multiply the energy consumption of natural gas in each year by the efficiency of power plants (35%). For 1980: Electricity generated = Natural gas consumption * Efficiency Electricity generated = 346.2399 billion kWh * 0.35 = 121.186965 Show more…
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