灯泡温度
请教各位40W的白炙灯和40W的节能灯哪个点起来温度要高? 这个需要试试的啦!根据常识,应该是什么? 白炙灯 特别想了解,各位都没有试过吗? 引用第2楼kkkkk于2010-08-31 15:35发表的:白炙灯
能确定吗? 除非做过实验,不然在这里哪里说的对呀! 利用常识 应该是白炽灯温度更高 肯定是白炙灯 引用第7楼jwei于2010-08-31 16:38发表的:
肯定是白炙灯
这个说法是对的,LED灯的光源是冷光源,只能说LED发出来的光是不发热的(白炙灯的光是热的),LED灯的半导体是发热的,而且光效越低发热越大。而温度上升到LED的限制温度,其工作
电流就会急剧上升,光效也就急剧下降。这就是所谓的光衰。光衰是LED半导体不可逆转的物理现象。散热不好的灯头,LED发出的热不能迅速的传出并散发调,其光衰势必厉害
其等效亮度光源:60W普通白炙灯相当于25W普通节能灯/ 70W普通白炙灯相当于30W普通节能灯
个人观点~! 40W 白炙灯 should get the higher temperature than 40W 节能灯. This is because the 白炙灯 uses heat to produce light and therefore its efficiency is so low. On average, it produces 17.5 lumens per watt of power. Lots of power is dissipated as heat rather than light.
On the other hand, 节能灯 gets the better efficiency and it normally produces 60 to 72 lumens per input watt. That means much less power will be converted into heat. The temperature is therefore much lower than 白炙灯 although the rated powers of these two lamps are the same.
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