Many factories, on the other hand, require a large amount of steam to drive machines and manufacture products, and the steam they use is often released as waste also.
民間工業「自力救濟」但有不少工業需要大量的蒸汽來推動機器，製造產品，而使用過的蒸汽往往也成為廢熱流放出去，造成能源浪費。