游闽江夜景
发布时间: 2021-01-29 01:16:25
Ⅰ 近日福州闽江两岸灯光夜景改造工程完工,使江滨夜景更加美丽,又节能环保.其中尤溪洲大桥换上了约3000盏
(1)原来灯泡消耗的电能W1=P1t=3000×0.028kW×30×3h=7560kW?h,
LED灯消耗的电能:W2=P2t=3000×0.013kW×30×3h=3510kW?h,
节省的电能:W=W1-W2=7560kW?h-3510kW?h=4050kW?h=4.05×103kW?h;
(2)∵P=
W |
t |
∴省下的电能可使额定功率为1000W的电热水壶正常工作的时间:
t′=
W |
P |
4050kW?h |
1kW |
故答案为:4.05×103;4.05×103.
Ⅱ 近日福州闽江两岸灯光夜景改造工程完工,使江滨夜景更加美丽,又节能环保。其中尤溪洲大桥换上了约3000盏
Ⅲ 闽江的夜景,英文怎么说
Min two sides bright lights, colorful lights silhouetted in water, the river Ambilight, visual mess that the beauty of the palaces were built as if the sky is unforgettable 热点内容
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