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Prototype of solar photovoltaic-thermal co generator
PV / T co-generator. Using optical devices such as mirrors, fresnel lenses, etc., it is possible to collect solar light and concentrate its energy on a single small area solar cell (photovoltaic). This reduces the total cell area an amount equal to the concentration ratio and thus decreases the cost of the PV system, as a relatively inexpensive optical concentrator replaces the expensive semiconductor material. Moreover, using light concentration boosts the cell conversion efficiency. In addition - the water as an infrared filter prevented overheating of solar cell that increase it power output significantly.
More see at www.tonchev.org
Length: 95
Rating: 5.00 (6 ratings)
Tags: Prototype of solar photovoltaic-thermal co generator
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Dave Holland: Commericalizing Concentrated Photovoltaics
Dave Holland, CEO of Solar Systems, Australia, discusses the positives and negatives of CPVs, why they are now ripe for commercialization, and how government, industry, and researchers will have to work together in order to bring CPVs to market and make them a commercial success. He was interviewed for SPIE Newsroom by Rich Donnelly.
Length: 297
Rating: 0.00 (0 ratings)
Tags: solar energy photovoltaics green
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SOLAR PHOTOVOLTAICS IN INDIAN RAILWAYS
The Indian Railways carries millions of passengers across the country over a route of about 62,000 kms. everyday. To keep this intricate system running, there is a complex network of communication for signalling, interlocking and track adjustments. All of which needs electricity to operate. In recent years, the shortage of electricity has made it imperative for stations to rely on battery systems which get charged through DG sets. Now, the Railways has implemented a programme of installing Solar Photovoltaics to charge and operate these signalling systems. Which eliminates the need for diesel, and also cuts down on electricity consumption. SOLAR PHOTOVOLTAICS IN INDIAN RAILWAYS
Duration: 03:50 mts.
The Indian Railways carries millions of passengers across the country over a route of about 62,000 kms. everyday. To keep this intricate system running, there is a complex network of communication for signalling, interlocking and track adjustments. All of which needs electricity to operate. In recent years, the shortage of electricity has made it imperative for stations to rely on battery systems which get charged through DG sets. Now, the Railways has implemented a programme of installing Solar Photovoltaics to charge and operate these signalling systems. Which eliminates the need for diesel, and also cuts down on electricity consumption.
Length: 211
Rating: 5.00 (1 ratings)
Tags: documentary short film spotfilms energy environment joint forest management pramod mathur
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Nanotechnology and photovoltaics
There's only one source of renewable energy that can provide all of the world's needs and that's the Sun. In fact, enough sunlight falls on the Earth's surface in just a couple of hours each day to meet the whole world's energy needs for one year. The question is: how can we effectively and economically harness this solar energy, without mass-producing very expensive conventional solar cells, which would ultimately require vast tracts of land in order to do their job?
Nanotechnology could provide the answer in the form of a new kind of solar cell, one which would be relatively inexpensive to manufacture and highly flexible in design. In fact, you maybe surprised as to just how flexible these cells might be! Find out more by watching this movie.
This is one of a selection of intriguing movies which are available for free download from the EPSRC Nanotechnology Image Library at : http://www.nanoscience.dept.shef.ac.uk/images/
You may also be interested in navigating to the "Soft Machines" site belonging to Professor Richard Jones - who features in this movie - for up-to-date discourse on all things nano. Here's the link : http://www.softmachines.org/wordpress/
Length: 209
Rating: 4.80 (19 ratings)
Tags: nano nanotechnology nanoscience nanofolio voltaics photovoltaics solar cells energy molecules nanoparticles EPSRC
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Concentration Photovoltaics Technology - Part 1
Along with wind power, concentration photovoltaics (CPV) offers one of the most promising utility-scale, renewable energy technology options. CPV has a current system efficiency of 25% and the potential of reaching much higher efficiency. In the right locations, it could provide electricity at cost low enough to be competitive with fossil and nuclear power. Compared to other solar technologies, CPV has the advantage of modularity and very low water needs.
This documentary goes across technology features of CPV. A visit to ISFOC (CPV Institute in Puertollano, South of Spain) serves as a connecting thread. A second series will follow, focusing on interviews with industry representatives.
Length: 413
Rating: 5.00 (3 ratings)
Tags: photovoltaics energy electricity renewables solar
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Concentrating photovoltaics - Industry views
Concentration photovoltaics (CPV) offers one of the most promising utility-scale, renewable energy technology options. Many companies are testing their CPV products and some have already launched commercial offers.
This documentary presents interviews with some industry representatives present at ISFOC (CPV Institute in Puertollano, South of Spain).
Length: 506
Rating: 5.00 (4 ratings)
Tags: solar photovoltaics renewables energy electricity
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