SolarCity Unveils Worlds Most Efficient Rooftop Solar Panel with more than 22 Module Efficiency.
The Sun provides endless energy, but the average solar cell panel can convert only 14 to 20 of the energy it collects into usable electricity. Now, American energy company SolarCity has built the world's most efficient rooftop solar panel, with a module efficiency exceeding 22 percent. The new SolarCity panel generates more power per square foot and harvests more energy over a year than any other rooftop panel in production, and will be the highest volume solar panel manufactured in the Western Hemisphere. SolarCity will begin producing the first modules in small quantities this month at its 100.
MW pilot facility, but the majority of the new solar panels will ultimately be produced at SolarCity's 1 GW facility in Buffalo, New York. SolarCity expects to be producing between 9,000 10,000 solar panels each day with similar efficiency when the Buffalo facility reaches full capacity. SolarCity's panel was measured with 22.04 percent modulelevel efficiency by Renewable Energy Test Center, a thirdparty certification testing provider for photovoltaic and renewable energy products. SolarCity's new panel is created via a proprietary process that significantly reduces the manufacturing cost relative to other highefficiency technologies, and it.
QEX12M Photovoltaic Module Quantum Efficiency Measurement System
The Q E X 12 M is an easytouse turnkey solution for photovoltaic module analysis It enables you to measure the quantum efficiency of have any cell at any location on the module The system provides a comfortable work environment and is easy to load. The system features a light blocking enclosure The light intensity can be adjusted to optimize the measurement conditional The voltage bias can be adjusted to bring the device under test to shortcircuit conditions. Computercontrolled XY positioning of the small probe beam enables exact measurement have any point in the testing area.
Google Data Center Efficiency Best Practices. Part 1 Intro Measuring PUE
ERIK TEETZEL Here at Google, data centers are very important to us. They are how we deliver all of our web services to all of our users. A data center can mean a variety of things. It can mean a small closet filled with a couple of machines all the way to very large warehouse scale buildings that are optimized for power use and IT computing and filled with thousands of servers. At Google, we spend a lot of time innovating the way in which we design and build these facilities to minimize.
The amount of energy, and water, and other the resources that these computing facilities use. In terms of the results of all of the work that we've been doing over many, many years, now we use half of the energy of the typical data center. To put things into perspective, the entire ICT sector, that includes mobile phones, computers, monitors, cell phone towers, represents roughly about 2 of global greenhouse gas emissions. Of that 2, the data center portion is responsible for about 15. There's design choices that you can make for energy.
Efficiency that improve the performance of your data center. And these things are just best practices. And adhering well to best practices, that's how you can actually make the most improvement in terms of energy use. The results of the these types of activities return Google millions of dollars in energy savings. So the results are significant. We've invited several members of our data center team to explain some of these best practices to all of you. KEVIN DOLDER The first step in managing the efficiency of your data center is to make sure you have the.
Instrumentation in place to measure the PUE, or power usage effectiveness. PUE is the ratio of total facility energy to IT equipment energy within your data center. It's a measure of how effectively you deliver power and cooling to the IT equipment. In 2006, the typical PUE of an enterprise data center was 2.0. Which means that for every one watt of IT energy consumed, one watt of overhead was consumed by the facility to deliver the power and cooling. ERIK TEETZEL Reducing the overhead is really what you want. You want PUE to get to as close to 1.0 as possible.
KEVIN DOLDER Over the last 12 months, our TTM PUE was 1.16. We've continuously measured that and it's gone down nearly every quarter since we began reporting it back in 2008. Last quarter the lowest data center was 1.09. Ideally, you should measure PUE as fast as you can, as often as you can, every second or so. And the more often you can measure it, the more meaningful the results will be. It's important to measure PUE over the course of a year annually or quarterly to get a meaningful result.
Sun Monitor Ericsson Application Awards 2013
Cities are fun places They offer vast collection of experiences, that enrich your daily life. But all that comes with a price! A high demand of power. And we know what that means! High energy prices and pollution. Fortunately, more and more people are willing to contribute to greener planet by shifting to renewable resources. With the development of solar panel technology and government incentives solar panels are now available to citizens who care about environment Now you can have solar panels on the top of your roof. The power your solar panel generates can not only supply your household, but you can also sell it to electricity company.
That's a great investment, isn't it But here's a problem, current ways to track energy output are suited only to people that really understand how those systems work. Let's take a peek. The energy generated from solar panel is converted from DC to AC by the inverters. Then they send the energy to power grid. And this process is monitorized by your personal computer. This means you have to keep you computer running 24 by 7. What a waste of energy Plus, if you want to make your solar power output accessible onthego you need to expose your PC on the dangerous Internet.
If your PC went down, you lose everything. Now, our solution resolves all this. We replace your PC with a customized plug play device. it is small and very energy efficient. Moreover it will relay power output data to our cloud service, so that your data is safe and accessible anytime, anywhere. With our Android application or crossplatform web app, you can keep yourself uptodate Wait, it doesn't ends here! If electricity company can have accurate readings on solar power output by regions, then they can adjust energy production and reduce energy waste.
QEX10 Quantum Efficiency Measurement System Extended Range Calibration
Hello, I'm Michael Kuhr with PV Measurements. Today I will go through the process of calibrating your QE system from 1000 nanometers up to 1800 nanometers in a beam down configuration. I suggest watching the previously posted tutorial of calibrating your system to 1100 nanometers before watching this tutorial. Calibration of the system must be performed anytime the system is turned on, anytime the alignment of the optics is changed, or when changing between beam up, beam down, or reflectance modes. Calibrating the extended range of the system has a unique complexity that the standard.
Range does not. Because no single device is accurate over the full wavelength range of the system, we must use two calibration devices. In addition to the silicon, we use a germanium photodiode that responds from 700 nanometers to 1800 nanometers. Any slight changes between the set up of the measurement can cause errors in the calibration. These errors are most apparent at the point where the two QE curves cross. The good news is this also makes it easy to check if the calibration has been performed correctly. The germanium material is inherently less uniform the silicon material used in our calibration.
Photodiodes. For this reason, the photodiode should be defocused to the point the beam nearly fills the entire active area of the photodiode. This minimizes the uncertainty in the measurement due to the non uniformity. Over the years, PV Measurements has sold various models of germanium photodiodes that may look different then the current model depending on the age of your system. Our current configuration includes a spacer that makes it easy to correctly focus the beam on the photodiode. When the focal point is at the top of the housing,.
The beam is defocussed to the correct amount into the photodiode. I have placed a piece of tape over the photodiode to make the beam easily visible. Notice it is in focus and in the center of the entrance. If you are unsure the beam is entirely in the active area of the cell, observe the main signal level, and move the photodiode into the location where the main signal level is at its maximum. The photodiode should be flat relative to the beam. Pictured here for reference is an older version.
Of our germanium photodiode. As with the silicon photodiode, scan the same range and wavelength increment as you intend to measure your device with. Apply the calibration from 1000 nanometers to the maximum wavelength desired by adjusting the update calibration range numbers from the apply calibration window. If the silicon calibration file appears, click on load calibration data and select the appropriate data file matching the serial number of the photodiode. To check the calibration, measure the photodiode across the 1000 nanometer calibration divide such as from 950 nanometers to 1050 nanometers. Ensure this curve is smooth across.
The calibration division. If there is a bump in the QE, there is most likely an error in the setup of the calibration devices. Double check the setup and calibrate again. As with the silicon photodiodes and any other calibration device, your germanium photodiode should be recalibrated as a regular interval. Our engineers recommend having your photodiode calibrated annually. PV Measurements calibrates photodiodes using photodiodes that have been calibrated at NIST. For technical assistance with your system, contact our technical support engineers at TechSupportPVMeasurements. And for information on calibrating your photodiode, contact our applications engineers at PVMSalesPVMeasurements.
QEX10 Quantum Efficiency Measurement System DC Mode Operation
Hello, I'm Michael Kuhr with PV Measurements. Today I will demonstrate how set up your QEX10 system for a DC Mode Measurement. The process for the QEX7 is very similar. With the system and software started, first set the beam to a visible wavelength. Then change the measurement mode from AC to DC by clicking the measurement mode button. Note the small depression in the top of the chopper wheel. Place the magnet assembly into the depression and quickly turn the chopper wheel power switch to the off position. As the chopper wheel slows,.
The magnet will stop the chopper wheel so the beam is not blocked. Visually verify the beam is not blocked by the chopper wheel by looking at the beam spot. If it is blocked, remove the magnet, turn the power on for the chopper wheel, and repeat the procedure. Please note turning off the chopper wheel before the magnet is applied can risk damaging the chopper wheel. During DC Mode measurements, bias lights may not be used and the system door must be closed to prevent room lighting from reaching the device.
Calibrate the system for your measurement range even if a recent AC Mode calibration has been performed. Your system is now ready for DC Mode measurements. When finished with your DC Mode measurements, change the measurement mode from DC to AC in the QE software, remove the magnet, and power on the chopper. Remember to calibrate anytime you change the measurement mode of the system. For technical assistance with your PV Measurements equipment, contact TechSupportPVMeasurements. For information on how to upgrade your QE system to perform DC Mode measurements, contact PVMSalesPVMeasurements.
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.
Energy 101 Energy Efficient Data Centers
Music. It's hard to imagine going back to a world without computers. They store critical data for our everyday lives. Now, the same is true for large companies, governments and organizations. They couldn't run without their data. That's why there are data centers across the U.S. that store and update all that information constantly. But these centers use a lot of power to keep a world of data just a click away. Up to 3 percent of all U.S. electricity powers data centers. And as more information comes online, data centers will consume even more energy.
It's a good thing energyefficient data centers are becoming more popular. They significantly reduce how much energy it takes to power our digital lives. All right, so a data center is rows and rows of servers, storing information on chains of hard drives that run continuously. They can get very hot. That means they have to be cooled constantly. Typically, expensive heavyduty air conditioning does the job. Things are much different in an energyefficient data center. Now, at first glance, it looks similar rows and rows of servers. But take a closer look and you'll see it's quite.
Different. Instead of running all the time, these efficient servers switch to a lowpower standby mode when they're not in use. In standby mode, efficient servers use a fraction of the electricity of standard servers. They run a lot cooler, too. And new software tools can help optimize energy use. In this data center, instead of using air conditioning, There are actually two different air treatment systems. One system sucks hot air out of the data center. In cold months, the heat is redistributed through the building's duct work to help keep the rest of the building warm.
A second system pulls in fresh air from this vent. The air circulates underground, where the constant temperature is about 54 degrees. From there, the chilled air circulates through a completely separate system and cools the data center. And fans circulate the cool air back through the servers. Thanks to a climate right for these efficiency methods, this data center rarely uses air conditioning only 33 hours throughout the entire year. Keep in mind the data center is always working, 247. OK, now here's the real advantage. For every watt your computer equipment uses, data centers.
Corner Brewery Bright Side 8
Next, we're going to visit the Corner Brewery in Ypsilanti, the largest solar brewery east of the Mississippi. Now they've got Detroit made solar panels that are producing thermal energy heat and electricity, and it's saving them about $20,000 a year. Corner Brewery, when we finish the project later this month, is going to make Corner Brewery the biggest solar brewery east of the Mississippi. We're definitely on the cutting edge and it's been such a difficult project I can see why other people have been reticent to get into it, but it's always really fun to be first and be a trail blazer.
Very exciting. The Greffs are one of the most entrepreneurial and exciting young couples in the state. They get it. They absolutely get it that it's about the human being. but it's also about finding new ways to do old practices, but do them better and smarter. We are putting 144 solar panels up on top of our roof, and what's really great about these panels are they're hybrid panels. Traditionally panels have either been photovoltaic to generate electricity or solarthermal to create hot water, and these are awesome because they.
Do both. This is a solar awning that is going to cover the south facing windows of our brewery. So far we think that we're going to be able to get almost 100 of our brewing water from solar energy and about 50 and hopefully a little bit more for the restaurant usage. These big tanks behind me are 400 liter hot water storage tanks and what happens is you can see the piping coming up out of these tanks. They run up onto the roof, the solar panels absorb the sun, heat the water, pump that water back down into these storage tanks.
And then we have the water in these storage tanks available for use in the brewery and in the restaurant. These are our fermentation tanks. So this is where, once we finish brewing the beer, it goes into these tanks. We add the yeast, and that's where actually alcohol is created as the yeast eats the fermentable sugars that are in the beer. We have a 2,000 square foot storage warehouse that is completely heated and cooled using renewable energy technology. When we looked into geothermal technology, we thought, well that will be perfect. Instead of spending a couple thousand dollars a month on electricity.
Usage to run a heating or air conditioner for this facility, for one upfront expense we can do six geothermal wells in the parking lot and maintain a cool temperature without having ongoing energy bills. The longest beer will sit in here is two weeks and it's usually seven days to ten days. Happy to say that business is booming and so we're moving beer out of here almost as fast as we can bottle it. This is where all of our hard work comes to fruition and we actually get to pull the beers.
Solar Cell Efficiency What Is It And How To Calculate
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