在城市中，很多地方都会产生废热。如果能把这些热量利用起来，比如用于冬季供暖，就能有效节约能源，并减少二氧化碳排放。
Utilising waste heat from the underground
by Lizzie Crook
Waste heat from one of the London Underground's lines will be used to warm over a thousand homes in the UK capital this winter. The warm air will be channelled from the Northern Line to support the London Borough of Islington's district heating, which will provide offices, leisure centres and 1,350 homes with heat by the end of this year.
London Underground 伦敦地铁系统
warm /wɔːm/ v. 使变暖、加热
channel /ˈtʃæn(ə)l/ v. 输送
borough /ˈbʌrə/ n. 行政区
leisure centre 休闲健身中心
Named Bunhill 2, the heat network is a joint project between Islington Council, Transport for London and engineering firm Ramboll, dubbed as the first of its kind in Europe. The council hope the system will make London more self-sufficient in energy, cut carbon emissions and reduce heating bills for residents.
network /ˈnetwɜːk/ n. 网络
joint /dʒɔɪnt/ adj. 联合的
project /ˈprɒdʒekt/ n. 项目
council /ˈkaʊns(ə)l/ n. 市政委员会
transport /ˈtrænspɔːt/ n. 交通（Transport for London是伦敦市的交通主管部门）
dub /dʌb/ v. 给…起别名
self-sufficient /ˌselfsəˈfɪʃ(ə)nt/ adj. 自给自足的
cut /kʌt/ v. 削减
carbon /ˈkɑːb(ə)n/ n. 碳
emission /ɪˈmɪʃ(ə)n/ n. 排放
resident /ˈrezɪd(ə)nt/ n. 居民
District heating, also known as heat networks, is the supply of heat and hot water from a central source to a group of buildings. Bunhill 2 district heating system is the second phase of Islington Council's Bunhill Heat and Power scheme – a heat network in Islington that was established in 2013 to warm approximately 700 homes.
supply /səˈplaɪ/ n./v. 供应
source /sɔːs/ n. 源头、来源
phase /feɪz/ n. 阶段
scheme /skiːm/ n. 方案、系统
establish /ɪˈstæblɪʃ/ v. 建立
approximately /əˈprɒksɪmətli/ adv. 大约
The network currently channels heat created in the Bunhill Energy Centre power station into local council housing, schools and a leisure centre. Bunhill 2 will extend this network to more community buildings and a further 450 homes.
currently /ˈkʌr(ə)ntli/ adv. 现在、目前（由current加后缀-ly变成副词）
housing /ˈhaʊzɪŋ/ n. 住房（council housing指政府为低收入人口提供的廉租房）
extend /ɪkˈstend/ v. 扩展、扩充
community /kəˈmjuːnəti/ n. 社区
The central source of the Bunhill 2 heat network is an ventilation（通风） shaft（竖井） – a vertical passage that is used to expel waste heat – in the abandoned City Road station. A heat pump designed by Ramboll will capture this excess heat from the ventilation shaft, before it is warmed to approximately 70 degrees Celsius. This will then be transferred into Islington's heat network to supply heat and hot water to properties.
vertical /ˈvɜːtɪk(ə)l/ adj. 竖直的、垂直的
passage /ˈpæsɪdʒ/ n. 通道
expel /ɪkˈspel/ v. 排出
abandon /əˈbændən/ v. 废弃
heat pump 热泵（把热量从低温处传送到高温处的设备）
capture /ˈkæptʃə(r)/ n. 捕获
excess /ˈekses/ adj. 多余的、过剩的
degree Celsius /ˈselsiəs/ 摄氏度
transfer /trænsˈfɜː(r)/ v. 转移、运送
property /ˈprɒpəti/ n. 房产、房屋
According to The Greater London Authority, there is enough heat wasted in London to meet 38 per cent of the city's heating demand. The expansion of district heating networks like Bunhill 2 could see this increase to 63 per cent by 2050.
demand /dɪˈmɑːnd/ n. 需求
expansion /ɪkˈspænʃ(ə)n/ n. 扩大、扩张
"We believe that the use of large-scale heat in this way connected to urban district heating systems will play a major part in decarbonising（减碳） the UK's heating energy demand," explained Lucy Padfield, director of District Heating at Ramboll.
scale /skeɪl/ n. 规模
urban /ˈɜːb(ə)n/ adj. 城市的
major /ˈmeɪdʒə(r)/ adj. 主要的、重大的
"The use of heat pumps utilising industrial waste heat sources is more carbon efficient than gas-fired combined heat and power, the usual source of heat for district energy schemes," she continued. "I am convinced that with the increasing use of renewable power sources, large-scale heat pumps connected to district heating systems will play a major role in the future heating of cities in the UK."
utilise /ˈjuːt(ə)laɪz/ v. 利用
industrial /ɪnˈdʌstriəl/ adj. 工业的（由industry加后缀-al变成形容词）
efficient /ɪˈfɪʃ(ə)nt/ adj. 高效的、效果好的
gas-fired 烧天然气的
combine /kəmˈbaɪn/ v. 联合、合并
convinced /kənˈvɪnst/ adj. 深信不疑的
renewable /rɪˈnjuːəb(ə)l/ adj. 可再生的（由renew加后缀-able变成形容词）
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