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<a href="http://www.gaogong123.com" target="_blank">www.gaogong123.com</a><br /> <br /> <br /> <br /> 谁说LED是理想的路灯？昨天,南京市路灯管理处副总工程师刘磊实在“和谐城市、光影未来”城市<a href="http://light.oecr.com" target="_blank" class="relatedlink">照明</a>研讨会上透露：国内目前呼声很高的LED节能灯性能实际上还不够稳定,南京目前将引进一批会变功率的灯来实现城市照明系统的节能。 <br /> <br /> 目前在国内路灯系统里,LED灯呼声很高,上海要引进2万盏,常州要引进1.5万～2万盏,宣传是购买成本虽然比普通灯高,但能节电省钱。可昨天的研讨会上,南京市路灯管理处副总工程师刘磊实透露：南京去年8月就开始在河西万科光明城市边的泰山路上,安装了6家厂商不同的LED灯来做试验,结果不仅各家的灯表现差异大,而且同一家的灯不同时期也表现不同。 <br /> <br /> 这6家的灯功率从120W～168W不等,有的标注功率168W的灯亮度还不如120W的灯,更奇怪的是,一段时间后,两家亮度上升,4家亮度下降,寿命长短也不同。 <br /> <br /> 既然LED灯性能还不稳定,那么南京路灯系统怎么实现节能呢？就此,刘磊实表示,传统路灯可以采用降电压和降功率等方式实现节能,南京今年所有新装路灯都将采用变功率的镇流器,在开灯6小时后自动降低功率,400W降到250W,250W降到150W,150W降到100W。比如龙蟠中路,那里的路灯就会自动降电压,“今年新项目会全部采用这种会降功率的设施,另有约2600多盏老灯也将改造。” <br /> <br /> 电压低了,功率小了,会不会影响照明效果？“用肉眼如果没看到换功率的那一瞬间,是不太会有感觉的。”刘磊实表示,照明亮度等控制都有个下限,保证照明效果。 <br /> <br /> 昨天,广场地毯灯(灯全布置在地下的玻璃里,整体像张地毯)、暖白光(比普通灯光白一些,但感觉温暖)等一批新型城市照明灯都在研讨会上亮相。目前,包括暖白光、降功率等一批先进的照明节能技术已经在南京环陵路、徐庄<a 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