Chimney steam can be diverted to heat greenhouses. Unused meat and bone from cattle rendering can be burned as fuel for cement production.
烟气可以原来加热温室，未消耗的牛肉和牛骨可以作为燃料燃烧用来生产水泥。
2
This heat from unused sunlight and inefficiencies in the cells themselves account for a loss of more than 50 percent of the initial solar energy reaching the cell.