Flows of Direct Energy
Accounting for direct energy as it flows through an economy is essential for developing a dynamic picture of its metabolism. In this chapter, we apply the First Law of Thermodynamics to sectors of the economy to describe flows of direct energy from the biosphere, through economies, and ultimately back to the biosphere as waste heat. Direct energy accounting equations are developed through a series of example economies with increasing levels of disaggregation. Finally, direct energy flows for the example of the US auto industry are discussed.
KeywordsWaste Heat Energy Sector Direct Energy Auto Industry Chemical Potential Energy
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