Nws yuav siv sij hawm ntev npaum li cas rau lub hwj chim ntawm 100W hnub ci txoj kev teeb?
Lub hnub ci lub zog hluav taws xob yog ib qho ntawm cov khoom siv hluav taws xob tauj dua tshiab uas tso siab rau hnub ci los tsim hluav taws xob. Ua li ntawd nws siv PV modules los hloov lub hnub ci rau hauv hluav taws xob. Lub hnub ci zog no yuav txuas ntxiv mus ntev npaum li peb muaj lub hnub ci hauv peb lub hnub ci, uas yog lwm 5 billion xyoo.
The potential for solar energy is enormous as about 200,000 times the world's daily electric generating capacity is received by the earth in form of solar energy. Briefly, the amount of sunlight that strikes the earth's surface in an hour and a half is enough to power the entire earth's consumption for one year.
Yuav kom paub ntau npaum li cas hnub ci teev, nws yuav siv sij hawm rau lub hwj chim 100w hnub ci txoj kev teeb ntawm ib qho kev ntsuam xyuas, peb yuav tsum muaj cov hauv qab no:
Loj thiab ntsuam xyuas ntawm Solar Vaj Huam Sib Luag
Hnub ci siab tshaj teev muaj nyob rau ntawm qhov chaw ntawd
Let's find out how many sunlight hours it needs in a single day to power 100W solar street light for at least 8 hours.
Txhawm rau kom lub zog 100 W rau 8 teev, peb yuav xav tau 800-Watt teev lub zog.
Now figure out how many sun hours will be available in a single day and how much power the solar panel will generate in a day. A peak sun hour doesn't include just an hour the sun is out in the sky. In fact, it refers to an hour in which a solar panel produces a certain amount of energy.
Txhua lub sij hawm ncov yog txhais tau tias yog ib teev thaum lub hnub ci siv zog mus txog qhov nruab nrab ntawm 1000 watts ntawm lub zog ib square meter (ib teev hnub ncov =1000 W/m2). Rau qhov chaw uas tau txais tag nrho 4000 W / m2 ntawm lub hnub ci hluav taws xob thoob plaws hnub, ces qhov chaw ntawd tau txais 4 lub hnub ci siab tshaj plaws txhua hnub.
Assuming that we are using a solar panel of rating 300 watts. The power produced by a 300-watt solar panel on 4 hours will be 300W x 4 sun hours = 1200-Watt hours in a day. Accounting for the losses that will likely incur, such as voltage drop, wire, dust, snow, etc. Let's reduce the power by 1/3 which is 12000.7 = 840 watts hours per day made from 300W solar panel.
