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An economic input-output model consists of the following flows: x 1 1 = 50, x 12 = 50, x 21

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An economic input-output model consists of the following flows: x11 = 50, x12 = 50, x21 = 30, x22 = 0, ƒ1 = 10, ƒ2 = 25.


1. Determine the input-output model for this network. You need to derive two equations in terms of the throughput and final demand for each sector. 

2. If the direct energy inputs to each sector are m11 = 1000 J and m12 = 500 J, calculate the energy return on investment for the product from sector 2 whose fuel value is 200 J/$.

Transcribed Image Text:

Table 12.4 Data for net energy analysis of some transportation fuels. Energy input (in MJ) to generate 1 MJ from fuel Petroleum Natural gas Coal Other TOTAL Gasoline Corn ethanol Cellulosic ethanol 1.10 0.04 0.08 0.03 0.28 0.02 0.05 0.41 -0.02 0.01 0.04 0.02 1.19 0.77 0.10 Greenhouse gases 94 77 11

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Question Details
Chapter # 12- Energy and Material Flow Analysis
Section: Problems
Problem: 7
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Question Posted: September 16, 2023 08:13:40
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