Degrees of Perfection, Part 2

Green Manufacturing (Dornfeld) - The degree of perfection discussion in the last posting was centered on the term "buy to fly" ratio popular in the aerospace industry to indicate material utilization. I stated that we need to consider all the peripheral "stuff" associated with a product like electronics, appliances, clothing, food, etc. which usually comes packaged so we might want to consider a sort of "buy to fly" ratio for conventional products.

I am aiming in this series to get to a more engineering discussion of exergy (or available energy and useful work) to address this. But, I want to play with this  more fascinating buy to fly concept for manufacturing a bit more...