零排放的能源供应系统贝丁顿社区采用热电联产系统为社区居民提供生活用电和热水。热电联产发电站不使用天然气和电力,而是使用木材废弃物发电。首先,碎木材片从储藏区自动流入干燥机,然后再从干燥机进入气体发生器,在受限空气流里加热后,通过气化过程转化为含有氢、一氧化碳和甲烷的可燃气体。小材的预测需求量为1100吨/年,其来源包括周边地区的木材废料和邻近的速生林。小区有一片三年生的70公顷速生林,每年砍伐其中的三分之一,并补种上新的树苗,以此循环,树木成长过程中吸收了二氧化碳,在燃烧过程中等量释放出来。 Zero-emissions energy supply system The Beddington community uses cogeneration systems to provide residential electricity and hot water for residents. Instead of using natural gas and electricity, cogeneration plants generate electricity using wood waste. First, wood chips are automatically fed from the storage area into the dryer and then from the dryer into the gas generator, where they are heated in a confined air stream and then converted to a combustible gas containing hydrogen, carbon monoxide and methane by the gasification process. The projected demand for small pieces is 1,100 tons per year, with sources including wood waste in the surrounding area and neighboring fast-growing forests. The community has a three-year-old 70-hectare fast-growing forest that cuts down one-third of each year and replants new saplings to recycle. The tree absorbs carbon dioxide during its growth and is released in equal amounts during the combustion process.