Solar or Electric Cars Industrial Revolutions CNBC International
The battery runs out too quickly there's no where to charge it and it's too expensive it's been a bumpy start for the allelectric car with some survey saying only five percent of drivers are considering switching away from traditional gas guzzlers Can the electric car overcome these roadblocks Buckle up Industrial Revolutions gets behind the wheel Every day a thousand more cars join the congested roads of New Delhi pumping more carbon onto already smoggy streets experts warn India could see an extra 140 million vehicles by 2035 So, could the electric car be the solution.
It was specifically designed for lowcost but yet not be a boring vehicle and we have kept the cost under ten thousand dollars Launched a year ago Mahindra Reva's e2o is one of ten electric models on the global market it can travel 100 kilometers on a single charge We keep about 10 kilometres of charge in reserve that the customer cannot automatically use when the battery runs out of charge the customer has to contact the control center and control center will release the last ten kilometers and thereby cannot.
Accidentally and get stranded on the road With only five hundred e2o's sold so far it's clear there's a long road ahead to winning over skeptical consumers But maybe the future isn't an electric one Maybe the answer comes from the sky Meet Stella What makes Stella special is that it's the world's first family call on solar energy it's a car that actually provides energy instead of just using it Students at Eindhoven University built the four seater car to compete in the world solar challenge which they went on to win.
With it's aerodynamic shape and lightweight it can travel 400 kilometers on a single charge But what happens if the Sun doesn't shine It's going to stop Stella when it's cloudy because we have a really large battery in the car and essentially you can see it as a normal electric car but you have solar panel as range extender We saw electric vehicles coming up which are very practical but have a limited range but on the other hand we saw solar cars which have a huge range but are not.
The photovoltaic industry is at a very interesting point right now. For a long time the cost of solar electricity was dominated by the cost of the solar panel you had to put on your roof. This was a bunch of expensive semiconductors that you had to put up on your roof. So that's typically dominated the focus of the research trying to decrease the cost of solar energy. So we typically refer the costs of solar power as being composed of the cost of the solar panel and also the cost of the balance of system the ancillary stuff. We're now.
At a point where even if I dramatically reduce the cost of silicon solarcells. These guys are about 20 efficient I'm getting in to tis law of diminishing returns where, even if I started giving you silicon solarcells for free, I'm not actually lowering the overall cost of solar power produced. So that's were concentrating photovoltaics come in.And that's where you're able to take very highefficiency solar cells like what are used on the space station and leverage the very expensive cost by using cheap inexpensive optics like lenses, basically like white magnifying glasses in order to redirect a lot of sunlight very.
Small areas of solar cell. So you can still generate a lot of power, but you don't need very much expensive solar cells. So what we did is we basically tried to take concentrating photovoltaics and scale them down to a much smaller more compact size basically trying to achieve concentrating photovoltaics in the in the same form factor as standard photovoltaics panels. So that you could substitute these very highefficiency concentrating photovoltaics in applications that are traditionally dominated by standard photovoltaics panels. What we've tried to do is implement something that's that achieves that tracking through translation.
Solar glass GlastonAir Part 7 of 9
Welcome the air age! Perhaps the greatest thing that GlastonAir brings to the solar glass business is that thinner glass improves the transmittance of the solar radiation, thereby increasing the efficiency rate of the Photovoltaic panels. Greater transmittance and improved efficiency provide gains in energy yield. Cutting down on the glass thickness also reduces the weight of the PV panels, which gives many significant savings throughout the entire value chain. Solar panel glass produced by GlastonAir provides the most durable solar panels against sudden weather variations and heavy storms. This is thanks to the high level of tempering even with extremely thin glass,.
And because of the exceptional glass flatness. As there are practically no roller wave or edge lift issues, the glass can be laminated with a higher quality than with conventional tempered glass. High quality lamination extends the lifetime of the solar panels and fulfills the tightest technical specifications of our customers. The flattest tempered glass for the Concentrated Solar Power units In addition to the PV market, thin glass can be utilized in the concentrated solar power industry as well. Currently, the CSP industry uses both tempered and annealed bent glass.
Tempered glass is preferred in the industry due to its durability. However, the challenge with bent and tempered glass has been the quality and lower efficiency rates. Greater efficiency can be achieved through higher precision of the solar radiation from the parabolic reflector into the absorber tube. The precision rate, in turn, depends on the quality of the reflector's parabolic shape. The flatness of the glass is an important requirement to achieve the correct shape for the parabolic reflector. For this need, GlastonAir is the best solution. It offers thin flat tempered glass that can be coldbent into a parabolic form.
Capture an IV Curve of a Solar Panel Solar Module Test Part 1 of 2
Today we're going to capture an IV curve of a solar panel using our new N6784A SMU module. It's a fourquadrant power supply and can be used in the 1U high compact system mainframe or it could be used in a benchfriendly DC power analyzer. For our demonstration today, we've installed the SMU module into channel one of the DC power analyzer, and we're using channel two to power our LED light source. Our LED light source is bright enough to create some photovoltaic energy in our solar panel, which will use the SMU module to capture both the voltage and current.
We've written a simple demonstration program to plot our IV curve. We start at zero volts and we make a current measurement from the SMU. We increase the voltage and make a current measurement. We continue to do that until we step all the way through our IV curve. From our IV curve, we can make several important measurements. We can capture the shortcircuit current, which is the true shortcircuit current. If we tried to make the same measurement with a multimeter, it would be a little bit low because of the burden voltage of the multimeter.
We can also measure the open circuit voltage of the solar panel, we can calculate the fill factor, as well as locate the max power point. Now, if we dim the light source, we can make another IV trace with lower illumination, and we can repeat this. Lower the light source and capture a curve. With our family of curves, you can see with lower levels of illumination, it really affects the first part of the IV curve more than the second half of the IV curve. This is common with solar panels.
Being that this is a fourquadrant power supply, we can actually extend our measurements into the adjacent quadrants. So we've started a new IV curve into the adjacent quadrants. So above this axis the SMU is sinking current, below this axis we're sourcing current. Likewise, on this axis we're sourcing a positive voltage and on this side of the axis we're sourcing a negative voltage. So in this particular example, we started with a negative voltage, we slightly increase it, measure the current and repeat that until we go all the way through our IV curve.
Tesla unveils home battery systems
And finally Tesla Motors has announced it will expand its business beyond electric vehicles into one of the fastest growing sectors in the energy industry. Chief executive Elon Musk unveiled on Thursday his companys new battery storage systems designed for homes companies and utilities. He said the product would help transform how the world delivers energy. If youre thinking of buying a battery well what does this provide you Well it gives you piece of mind if there is a cut in the utilities youre always going to have power. If youre in a place that.
Is very cold you dont have to worry about being out of power if there is an ice storm. You could actually go if you want completely off grid. You could take your solar panels charge the battery packs and thats all youd use. According to research firm IHS CERA the global energy storage industry is forecast to grow to 19 billion U.S. dollars by 2017 Tesla plans to start shipping its battery storage systems later this year. Analysts project the new venture will yield as much fourandahalf billion dollars in annual revenue for the company.
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