游閩江夜景
發布時間: 2021-01-29 01:16:25
Ⅰ 近日福州閩江兩岸燈光夜景改造工程完工,使江濱夜景更加美麗,又節能環保.其中尤溪洲大橋換上了約3000盞
(1)原來燈泡消耗的電能W1=P1t=3000×0.028kW×30×3h=7560kW?h,
LED燈消耗的電能:W2=P2t=3000×0.013kW×30×3h=3510kW?h,
節省的電能:W=W1-W2=7560kW?h-3510kW?h=4050kW?h=4.05×103kW?h;
(2)∵P=
W |
t |
∴省下的電能可使額定功率為1000W的電熱水壺正常工作的時間:
t′=
W |
P |
4050kW?h |
1kW |
故答案為:4.05×103;4.05×103.
Ⅱ 近日福州閩江兩岸燈光夜景改造工程完工,使江濱夜景更加美麗,又節能環保。其中尤溪洲大橋換上了約3000盞
Ⅲ 閩江的夜景,英文怎麼說
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 熱點內容
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