《讨论〉太阳能聚光光伏发电技术

liguosun · 发表于 2003-11-26 22:36:00

谢谢回信，很受启发！

灵魂精华 · 发表于 2003-11-27 23:32:00

小弟不懂这些专业知识，但只从生活的角度去看，家用可以吗？
造价贵吗？另外，夜间用电咋办？蓄电池？

derwen2 · 发表于 2003-12-8 02:42:00

不错

liguosun · 发表于 2003-12-9 16:52:00

建议

聚光光伏发电的应用现在还不多，市场前景与研究是两回事，希望大家能够实事求是地分析试验数据，不要夸大其词，可以更多地讨论市场能接受的技术、性价比问题。

liguosun · 发表于 2003-12-9 18:20:00

跟踪精度犹如天方夜谭……请专家指正

小弟不知道下面的跟踪精度是如何测出来的,已经比世界领先水平高出了若干，要是真正如此的话，那我们可就是牛了，世界上早就充斥这种廉价的跟踪器了，而不要什么轨迹跟踪了……可惜不知道是真是假，更不知测试条件如何？

如果在多云的天气里，那能够达到这种精度？天方夜谭吧！

对不起该文的作者了，我只是想探讨一下。

自动跟踪聚焦式太阳能光伏发电技术:
由我公司研制的跟踪探测器,其特点是廉价、精度高、没有温度漂移、工作稳定、可靠。当该跟踪探测器采用造价低廉结构时,跟踪精度为0.01°时可稳定工作。当该跟踪探测器采用造价较高结构时,跟踪精度为0.001°时可稳定工作。目标的偏差量以输出连续线性电压或电流方式,输出有+、-、0三种状态电压或电流值。当跟踪探测器对准光源时输出为0,分别以两个相反方向偏离光源时,输出分别为+或-值,并且输出值随偏离光源角的增加而增加。在0偏离角附近,输出值随偏离角变化较快,因此探测器的灵敏度较高。

suncon · 发表于 2003-12-27 01:16:00

[这个贴子最后由suncon在 2003/12/27 11:43am 第 2 次编辑]

[原创}

自动跟踪聚焦式和平板式太阳能光伏发电技术的产品正在发电。

zgzxb · 发表于 2003-12-27 17:47:00

大开眼界！！
能否多提供一些关于太阳能电池方面的资料。

suncon · 发表于 2003-12-27 20:38:00

[这个贴子最后由suncon在 2003/12/27 12:41pm 第 1 次编辑]

美国Sunpower公司太阳能电池片的性能

Solar Cells

A-300: The A-300 is a 125mm, 20% efficiency, high-performance, low-cost, single crystal silicon solar cell. With its unique all back-contact design, the A-300 cell is ideally suited for applications where the high performance and aesthetic appeal is desired.

suncon · 发表于 2003-12-27 20:43:00

无锡产的电池片的性能

产品型号： STP125S/Ab
产品尺寸(mm*mm,mm)： 125×125，Φ150
转换效率(%)： 16.0
最大功率Pmax(W)： 2.38
最佳工作电压Vm(mV)： 505
最佳工作电流Im(A)： 4.707
开路电压Voc(mV)： 605
短路电流Isc(A)： 5.038

suncon · 发表于 2003-12-27 23:35:00

Solar Energy

Solar energy is the least polluting and most inexhaustible of all known energy sources. We are just beginning to tap its potential.

In a sense, virtually all of the energy we use comes from the sun - even fossil fuels like oil, natural gas and coal, which are the stored, compressed solar energy of plants that lived millions of years ago. While energy radiating directly from the sun has always been available to humankind, we have not been able to use it as effectively as other sources. Creating a system which provides a reliable energy supply from solar energy can be a technical challenge. However, not all solar energy systems are difficult to create or use.

Historic Timeline

The appeal of solar energy is so direct that its history is measured by concrete results and in some cases the products of a run-away imagination. Silicon has the benefit of over thirty years of large scale, reliable use.

Here are a few highlights in the long history of important events related to solar power:

1883 Charles Fritts builds the world’’s first solar-electric module: Selenium coated with gold. Werner von Siemens calls it “scientifically of the most far-reaching importance”. J.C. Maxwell, baffled by effect, creates the field of quantum mechanics at Cambridge University’’s Cavendish Laboratory.

1921 Albert Einstein wins the Nobel Prize in physics. The Nobel committee cites his work on the photo-electric effect, which includes an explanation relevant to solar cell operation, as his most important achievement.

1953 Gerald Pearson shines lamplight on a Silicon transistor developed by colleagues at Bell Labs and discovers lithium doped silicon as a powerful photovoltaic material, superior to selenium in that it offers better contacts, lower series resistance, and higher bandgap energy (more voltage).

1953 Bell Labs’’ Pearson, Fuller, Chapin announce the first solar cell. The New York Times comments that this is “the beginning of an era, leading eventually to the realization of one of mankind’’s most cherished dreams—the harnessing of the almost limitless energy of the sun for the uses of civilization”.

1956 The first earth-orbiting satellite is powered by solar cells. Solar’’s cost/performance is at $500/Watt but solar wins as the best electricity source for this application.

1970 Solar’’s cost/performance is down to $100/Watt for solar cells produced with high-grade silicon feedstock (such as used by the microelectronics industry). All satellites are now powered by solar cells.

1973 Solar’’s cost/performance is down to $50/Watt by virtue of using cheaper reject silicon wafers and maintaining the silicon wafer’’s original.

1978 Solar modules are deployed on large scale terrestrially in Australia to support telecommunication networks.

1985 Solar electricity powers 30,000 emergency call boxes along California’’s highways. Providing electricity for new streetlights and bus shelter illumination is now generally more economical than connecting to the grid.

1995 The cost/performance of solar systems reaches $8.50/Watt (solar cell + installation equipment) but is still an order of magnitude too high to be competitive with grid electricity.

2002 Solar system cost/performance is below $6 per Watt (solar module is ca. $3/Watt). The solar-cell market surpasses $1 billion and is growing at over 40% in key counties including Germany and Japan.

bhlens · 发表于 2004-2-11 21:24:00

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bhlens · 发表于 2004-2-14 05:21:00

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《讨论〉太阳能聚光光伏发电技术