太陽(yáng)能常見問題問答-亞洲av中文aⅴ無碼av,嬌妻在臥室里被領(lǐng)導(dǎo)爽4505k高清觀看

solar faq

q: how solar cells/modules convert sunlight into a useable energy source?

太陽(yáng)能電池片是怎樣將太陽(yáng)光變成可用的電能的？

a: sunlight delivers packets of energy called ‘photons’. there are more photons delivered in 1 hour than the earth could use in an entire year. solar cells are made mostly of the abundant element silicon and have a positive and negative layer. when photons hit a solar cell, they are absorbed by the silicon and electrons are released. the electrons flow along the metal contact at the bottom of the cell and for electricity. solar cells are combined into modules to produce greater of electricity.

太陽(yáng)光提供大量的能量稱為“光子”，每小時(shí)里所產(chǎn)生的光子比地球一年要用的還多。太陽(yáng)能電池片大部分是由大量的硅元素制成，有正極和負(fù)極面。當(dāng)光子撞擊到太陽(yáng)能電池片時(shí)，會(huì)被硅所吸收，并且釋放電子。電子在電池片的底部沿著柵線走動(dòng)變成電流。電池片組合起來變成組件，產(chǎn)生更多的電能。

q:what does energy conversion efficiency mean?

能量轉(zhuǎn)換效率的含義是什么？

a:

energy conversion efficiency is an expression of the amount of energy produced in proportion to the amount of energy consumed, or available to a device. the sun produces a lot of energy in a wide light spectrum, but we have so far learned to capture only small portions of that spectrum for conversion to electricity using photovoltaics. today's commercial pv systems are about 7% to 17% efficient. by comparison, a typical fossil fuel generator has an efficiency of about 28%. however, some experimental pv cells now convert nearly 40% of the energy in sunlight to electricity.

  能量的轉(zhuǎn)換效率表示能量的轉(zhuǎn)換產(chǎn)生量與能量的消耗量或設(shè)備可用能量的比值。太陽(yáng)以很廣闊的光譜發(fā)出很多能量，但我們目前只能依靠光伏技術(shù)來獲取這些光譜中很小一部分的能量?，F(xiàn)在，商用光伏系統(tǒng)的轉(zhuǎn)換效率在 7% 到 17% 之間。與之比較，一個(gè)典型的化石燃料發(fā)電器的效率在 28% 左右。然而在實(shí)驗(yàn)室條件下，一些光伏電池可將太陽(yáng)光中所含能量的近 40% 轉(zhuǎn)換為電能。

q:what does photovoltaic (pv) mean?

   光伏發(fā)電 (pv) 的含義是什么？

a:

the word 'photovoltaic' essentially means electricity from the energy of sunlight. first used in about 1890, the word has two parts: photo, derived from the greek 'phos' meaning light, and volt, a unit of measurement named for alessandro volta (1745-1827), a pioneer in the study of electricity.

  光伏 (photovoltaic) 的本質(zhì)含義是從太陽(yáng)光的能量中獲得電能。這個(gè)詞Zui早應(yīng)用于 1890 年，分為兩個(gè)部分：“photo”，是從希臘語(yǔ)中代表光的詞“phos”而來；“volt”，是由以研究電力的先驅(qū)亞歷山德羅·瓦特 (1745-1827) 命名的電壓度量單位而來。

q:what are the components of a pv system?

   光伏系統(tǒng)由哪些部分組成？

a:

a pv system is made up of several different components. these include groups of pv cells called 'modules' (also known as 'panels'); one or more batteries; a charge regulator or controller for a stand-alone system; an inverter for a utility-grid-connected system or when alternating current (ac) rather than direct current (dc) is required; wiring; and mounting hardware or a framework.

一個(gè)光伏系統(tǒng)由許多不同的部分組成。其中包括多組稱為“組件”（也稱為“面板”）的光伏電池；一個(gè)或多個(gè)蓄電池；對(duì)于獨(dú)立系統(tǒng)需要一個(gè)充電器或控制器；對(duì)于并網(wǎng)系統(tǒng)或需要將直流電 (dc) 轉(zhuǎn)化為交流電 (ac) 時(shí)，需要一個(gè)逆變器、導(dǎo)線、五金件及機(jī)箱等。

q:where are pv systems being used?

   光伏系統(tǒng)可以運(yùn)用在哪些領(lǐng)域？

a:

pv systems are generating clean power in a whole host of applications right across the world - from urban skyscrapers to remote villages in developing countries. pv electricity can be used to power all manner of household appliances, computing and communications e, water pumping and lighting. cost-effective examples of lighting powered by pv include small garden lights, street lights, lighting for recreational areas, highway signs, warning signs and signals, and lighting for businesses and homes. virtually any power need can be met with pv.

光伏系統(tǒng)在全世界為各個(gè)應(yīng)用領(lǐng)域提供清潔能源。從市區(qū)的摩天大樓到發(fā)展中國(guó)家或地區(qū)的偏遠(yuǎn)村莊。光伏發(fā)電可為各種家用電器提供電力，包括計(jì)算機(jī)及通信設(shè)備、水泵和照明。應(yīng)用光伏電力以節(jié)約成本的例子包括：小型草坪燈、路燈、娛樂場(chǎng)所燈光、高速公路信號(hào)燈、警示燈及各種商用和家用的照明。事實(shí)上，光伏系統(tǒng)可為任何領(lǐng)域供電。