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(PDF) An introduction to polymer matrix composites

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01/11/2021 · To calculate the NPC for a longer project lifetime with multiple cash flows, the formula can be modified as follows. (20) NPV = ∑ t = 0 n R t 1 + i t where, R t and n refer to net cash inflow-outflow in a unit time period, and project lifetime, respectively. 3.1.2. Cost of energy. The COE is the average cost per unit of useful electrical

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