Earthport, Tokyo Gas Kohoku New Town Building, is an office building which is in harmony with the environment, the entire building being based on a "life-cycle energy-saving" concept, including the use of natural energy such as sunlight and natural air flow. This "life-cycle energy-saving" is not simply a matter of cutting energy consumption. It includes the idea of reducing the load on the global environment over the life of the building, from the time of its construction until it is scrapped. The building is situated within Kohoku New Town in Yokohama and it has been in full operation for about two and a half years since it was completed in March 1996. Records on 1997 fiscal year show that as a result of a 39% reduction of primary energy consumption, it might be expected to reduce by about 30% in life-cycle CO/sub 2/ emission.
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机译：Earthport，东京煤气港北新城市大厦，是一栋与环境和谐相处的办公大楼，整个建筑都基于“生命周期节能”的概念，包括使用阳光和自然空气等自然能源流动。这种“生命周期节能”不仅是减少能耗的问题。它的构想是在建筑物的使用期限内（从建造之日起直至报废），降低全球环境的负荷。该建筑位于横滨港北新城内，自1996年3月竣工以来，已经全面运营了大约两年半。1997财政年度的记录表明，一次能源减少了39％消耗量，则可以预期其生命周期内的CO / sub 2 /排放量将减少约30％。
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