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英国伦敦地下铁历史悠久，不少设施至今已显老旧，没有空调设备的车站在热浪季节更是让乘客叫苦连天。不过，这些地下热气原来尚有用武之地，有能源中心拟将它加以利用，转化成可在冬日里为地面民居保暖的低成本、低碳暖气。按计划，地铁热气在年底前就能转化成住宅用供暖。

英国《卫报》周一（26日）报道，伊斯灵顿暖气网络计划将伦敦地铁北线的地底热气加以利用，为区内的居民及商业机构提供暖气。伊斯灵顿本已正与邦希田园能源中心合作，将热气转化为电力，为当区700户区民、学校及文娱中心供电；今次的计划将会把供暖网络再扩张450户。

大伦敦政府（GLA）估计，伦敦全市所废弃的热气，足以转化成市内电力需求的38%。政府此前曾计划在2025年前，禁止新建的住宅使用煤气锅炉供暖，故各界都积极开发其他能源；现时英国已有将工厂、矿场产生的热能循环利用成电力。如果今次计划成功，将有望把无用热气转化的技术普及化。

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