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Električna vozila i obnovljiva energija - Početna
-> Solarni moduli
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ogi
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Pridružen/a: 25. 07. 2005.
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Lokacija: Zagreb

PostPostano: 17.1.2009. sub. 21:34    Naslov: NOVOSTI Citirajte i odgovorite



Struja fotosintezom

http://www.snf.ch/E/NewsPool/Pages/mm_03jul15.aspx

http://kth.se/eng/nano/research/materials/solarcells/index.html

http://www.rdmag.com/ShowPR.aspx?PUBCODE=014&ACCT=1400000100&ISSUE=0611&RELTYPE=PR&ORIGRELTYPE=FE&PRODCODE=00000000&PRODLETT=BU&CommonCount=0
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ogi
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Pridružen/a: 25. 07. 2005.
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PostPostano: 17.1.2009. sub. 21:36    Naslov: Citirajte i odgovorite



80% Efficient Solar Panel?! Works at Night?!

http://www.ecogeek.org/content/view/1329/
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max



Pridružen/a: 07. 09. 2008.
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PostPostano: 17.1.2009. sub. 22:28    Naslov: Citirajte i odgovorite

E baš sam čekal da netko grune PV sa 80% efikasnošću i još da grune za cijeli spektar a ne samo za vidljivu svijetlost smijeh2 . E da malo prouče kvantnu mehaniku nebi škodilo. A zanemarilo se bude i air mass (AM) i temperatura istog PV. Čak da ga montiraju u svemir teško će izvuć kaj može termo kolektor.
Zna li netko koliko je zračenje u noći za puna mjeseca (spektar od 0.3mm do 3mm u W/m2) ??? otprilike 140 tisuća manje nego za sunčana dana ako to kome kaj govori.
E onih 40% kaj je moguće ali kod odeđenih uvijeta npr 500 sunašca pa energija za hlađenje istog - to se ne računa ?
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Mrax



Pridružen/a: 23. 03. 2007.
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PostPostano: 18.1.2009. ned. 00:46    Naslov: Citirajte i odgovorite

EV je napisao/la:


80% Efficient Solar Panel?! Works at Night?!

http://www.ecogeek.org/content/view/1329/

Vidi...moja ideja. Otome sam ja nedavno govorio u jednoj od tema. Ono o principu raa detektorskog prijemnika.
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ogi
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Pridružen/a: 25. 07. 2005.
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PostPostano: 18.1.2009. ned. 09:04    Naslov: Citirajte i odgovorite



Will Nanoantennas replace PV Solar Cells?

http://www.alt-energy.info/archives/601

Flexible Nanoantenna Arrays Capture Solar Energy

http://www.renewableenergyworld.com/rea/news/story?id=53300
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ogi
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PostPostano: 18.1.2009. ned. 09:19    Naslov: Citirajte i odgovorite

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max



Pridružen/a: 07. 09. 2008.
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PostPostano: 18.1.2009. ned. 17:16    Naslov: Citirajte i odgovorite

Mrax je napisao/la:
Vidi...moja ideja. Otome sam ja nedavno govorio u jednoj od tema. Ono o principu raa detektorskog prijemnika.

Sve 5 samo za temu free energie, a ne za PV Very Happy
E i da nebi se stekao pogrešan dojam simpatićni su mi ljudi koji maštaju o free energy (na rubu znanosti) tako da imaju moje simpatije za razliku od nuklearaca Cool
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ogi
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Pridružen/a: 25. 07. 2005.
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PostPostano: 18.1.2009. ned. 18:22    Naslov: Citirajte i odgovorite

www.blackbull.hr
http://www.hsuse.hr/_Data/Galerija/2_20070614102528.jpg
Žitnjak, Zagreb Kuća STILIN d.o.o. Fotonaponski sustav 36,1 kW

Sokirani palac
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max



Pridružen/a: 07. 09. 2008.
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PostPostano: 18.1.2009. ned. 20:20    Naslov: Citirajte i odgovorite

Meni osobno firma Stilin je arhitektonski interesantnija nego fotonaponski. Jer kako danas stvari stoje PV sustav može instalirati i čistačica (hoću reći da je tolika jednostavnost sa PV samo neki mistificiraju), ali recimo malo aritekata zna nekaj o solarnoj arhitekturi i zato ja palac za arhitektonsko rješenje firme. Malo se raspitajte koliko su energetski učinkoviti i kako je biti po ljeti u pogonu (iako nema klime), a nije prevruće. Ah da to je druga tema Smile
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ogi
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Pridružen/a: 25. 07. 2005.
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PostPostano: 18.1.2009. ned. 21:45    Naslov: Citirajte i odgovorite

Kako to da Stilin brije na sve to..mislim, oni proizvode traperice

http://www.blackbull.hr/svlacionica-z.html lol
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max



Pridružen/a: 07. 09. 2008.
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PostPostano: 21.1.2009. sri. 12:50    Naslov: Citirajte i odgovorite

January 21, 2009
Maranello, Italy: Ferrari Unveils Photovoltaic System in Maranello
1075 PV modula (185W) firme Mitsubishi Electric, ukupno 198.8 kWp.
E još nisam našo link, ali da se zna kaj Ferarri ima ... za razliku od našeg HEP-a
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ogi
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Pridružen/a: 25. 07. 2005.
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PostPostano: 13.2.2009. pet. 13:48    Naslov: Citirajte i odgovorite

elektro je napisao/la:
novi pristup proizvodnji elektricne energije direktno iz toplinske energije,

evo kratak prevod iz Njmeackog na Engleski

a start UP from Boston, developed a new technology, those the thermal Photovoltaik so called (TPV), with which by solar cells made of warmth river is made, to clearly facilitate is. Ten million dollar at Investmentkapital were already in-recruited and a prototype was built, which should have been large enough for practical applications. Shortly the equipment is to be built in a glass factory, where then from hot exhaust gases electricity is to be generated. The basic concept of the TPV is fast explained: It uses solar cells, in order to transform the light, which radiates from a hot surface, into river. While first applications lie still in the generation of current from waste heat, the technology of a daily could be used also for direct electricity production from the sunlight - with a substantially higher efficiency than conventional solar collectors. With such a system the light was concentrated on a material, which itself thereupon heats up. The photons set free thereby became then by means of solar cells river. So far the TPV idea did not let itself convert however in the commercial yardstick. That had above all two reasons: First of all the high necessary temperatures and secondly the competition by existing technologies for heat transformation, about steam turbines. The innovation of MTPV lies now in a method, which can increase the river of the photons from the material heated up to the solar cells by tenfold, if one compares it with conventional TPV plants. That is to make such systems usable smaller, more cheaply and even at lower temperatures, says MTPV boss Robert DiMatteo. A conventional solar panel absorbs light of the entire spectrum, converts however only light of certain wavelengths efficiently in electricity. A majority of the irradiated energy is wasted in such a way. In the result this means that conventional solar cells have a theoretical maximum efficiency of 30 per cent; if the sunlight is concentrated first with a mirror or a lens, it is about 41 per cent. With TPV plants a material is therefore selected, which, if it becomes hot, delivers light, which can be converted by a solar cell particularly efficiently in river. The theoretical maximum efficiency increases in such a way to 85 per cent. In practice engineering problems make however unattainable. With the new technology of MTPV however efficiencies are to be possible beyond the 50 per cent according to DiMatteo. Appropriate computer models existed. So far are not the prototypes however yet: They set 10 to 15 per cent of the waste heat, which results during the glass production, in electricity over. That is however already enough, in order to work economically, so DiMatteo. In addition the expected efficiency of TPV plants lies much more highly than from thermoelectric devices, which transform heat directly into electricity. The main difference between the beginning of MTPV and other TPV models lies in the position of solar cell and material heated up (MTPV stands for " Micron gap TPVs" , a TPV technology, with which the gap is between the components in the micrometer range). DiMatteo could find out during its research as a student to ALSO and later than scientists at the Draper Laboratories in Cambridge that extremely close bringing together of material and solar cell heated up facilitate the photon river and their absorption clearly. With a conventional TPV system most photons, which are created by the material heated up, are back reflected into that material, if they reach the surface; the same phenomenon keeps light imprisoned also in optical waveguide cables. If one brings solar cell and heated material up however very near together, so that the gap between both is shorter than the wavelength of the emitted light, a Zurückreflektieren is prevented. The photons walk from a material in the other one, as if no gap would be present. The tightness makes it possible to electrons on the one side the gap in addition to transfer energy to the electrons on the other one. (A vacuum between the material heated up and the solar cell provides for a temperature difference, that for a high efficiency is needed.) Because the material heated up more photons delivers, generate the solar cells ten times more energy per unit area than a conventional TPV cell. That makes it possible to only block a tenth so much solar material which lowers the costs clearly. In addition substantially more river can alternative be created at lower temperatures. That is a main advantage of the idea, means Peter Peumans, professor for electrical engineer natures to the Stanford University. Conventional TPV plants need temperatures of 1500 degrees Celsius. The first MTPV prototypes function to DiMatteo properly with 1000 degrees and believe that the technology could work even at 100 degrees economically. This large temperature range could make the technology the use of different heat sources attractively - for example exhaust gas, which deflagrated otherwise simply. Peumans sees however also disadvantages. Because the material heated up and the solar cells lie so near together, it is impossible to place a filter between both ranges in order to check the wavelengths, which reach the solar cells. That could limit the attainable efficiency in the long run nevertheless, means it. DiMatteo published the MTPV concept already end of the nineties-years, but up to the building of first prototypes of adequate size it took years. A challenge was to find a method to create a gap which only one tenth micrometer was broad, at the same time however over relatively large regions predominates. DiMatteo hopes that its company can reduce the gap in the next years still further. That would continue to increase the total output, which would increase according to the computer models also the efficiency.



http://www.heise.de/tr/Boost-fuer-die-Thermo-Photovoltaik--/artikel/127099
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Pridružen/a: 25. 07. 2005.
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PostPostano: 16.2.2009. pon. 13:26    Naslov: Citirajte i odgovorite



http://www.dobrevijesti.info/index.php?option=com_content&view=article&id=1574:dolazi-mobitel-na-solarnu-energiju&catid=45:tehnologija-i-znanost&Itemid=59
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elektro



Pridružen/a: 16. 08. 2008.
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Lokacija: Frankfurt / Njemacka

PostPostano: 16.2.2009. pon. 17:29    Naslov: Citirajte i odgovorite

super stvar ..trebalo bi tako nesto uvesti za sve potrosace, mali display..i nakon pranja vesa ili upotrebe PC, Labtopa, kafe, toasta, TVa, se pokaze koliko drveca (CO2) ste sacuvali cooool palac
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HAL9000v2.0



Pridružen/a: 09. 05. 2007.
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PostPostano: 16.2.2009. pon. 17:39    Naslov: Citirajte i odgovorite

Jel se isporučuje s prozirnom košuljom?
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