地铁余热成为空调能源日本东京都将从１９９７年度开始把地铁站的余热用作周围大楼的空调能源，计划在建设中的第１２路都营地铁的新客站建设排热利用系统，将余热用于周围７栋楼房制冷取暖的能源。东京都计划在其它几个车站也设立同样的系统，把未能充分利用的余热用作地... Subway waste heat to become air-conditioned energy Japan Tokyo will be the beginning of 1997 to waste heat from the subway station as the air-conditioning energy of the surrounding buildings, plans in the construction of the twelfth way Metro Metro station construction waste heat utilization system, waste heat for Around the seven buildings for heating and cooling energy. Tokyo plans to set up the same system at several other stations to use the waste heat that is not fully utilized