DERIVATION OF ENERGY-EMBODIMENT FUNCTIONS TO ESTIMATE THE EMBODIED ENERGY FROM THE MATERIAL CONTENT

The embodied energy includes the direct and indirect energy consumed f or the entire production process. These values are needed to estimate impacts on energy consumption due to changes in consumption patterns. We have developed a model of the economic system to account for every production process. This model illustrates interrelations among produc tion processes by incorporating sectors that produce multiple products . The model is consistent with available input-output coefficients and the material flow in each process. By exploring our model, we derived energy-embodiment functions that evaluate the embodied energy of an a rbitrary product in terms of material content. Copyright (C) 1996 Else vier Science Ltd.