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Alex P

Energy storage (heat storage, batteries, fuel cells, etc.)  - 
 
electric cars will make gas ones obsolete :)
 
Tesla Unveils the World’s Fastest Production Car: 0 to 60 in 2.5 Seconds

See why (eco+public health+etc reasons) i installed solar panels equivalent to planting 322 treeshttps://plus.google.com/+AlexP/posts/FHtw2ri5Dq8 and why i drive an electric car equivalent to planting 382 trees (if the oil car would be refilled weekly) ► https://plus.google.com/+AlexP/posts/TQboBAji7uo.
If your panels produce more electricity than you use, you get free charging for your car too, like me. :)
It’s also the first electric car with a range of more than 300 miles.
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Muhammad Mustafiz's profile photo
10 comments
 
+jesse s oh dear lol.
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Jay Egg

Green, climate change, and bio-environmental impact  - 
 
Wastewater Energy Harvesting with #Geothermal http://goo.gl/OkGLf7
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Green Plains has announced its plans to purchase three Abengoa Bioenergy ethanol plants for approximately US$237 million in cash.
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Derick Ajumni

Green, climate change, and bio-environmental impact  - 
 
After studying online retailing, ride sharing, video streaming and short-term lodging options, researchers concluded that companies can reduce the carbon footprint of their supply chains and improve customer satisfaction by giving consumers information and tools to make green choices
Online Purchasing Creates Opportunities to Lower the Life Cycle Carbon Footprints of Consumer Products
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Adalidda dot net

Energy storage (heat storage, batteries, fuel cells, etc.)  - 
 
Operation of metal Hydride #HydrogenStorage systems for #Hydrogen compression using #SolarThermal Energy

Authors: Naruki Endo, Keisuke Matsumura, Yoshiaki Kawakami, Masayoshi Ishida and Tetsuhiko Maeda

Publisher: Taylor & Francis Online

By using a newly constructed bench-scale hydrogen energy system with renewable energy, ‘Pure Hydrogen Energy System’, the present study demonstrates the operations of a metal hydride (MH) tank for hydrogen compression as implemented through the use solar thermal energy. Solar thermal energy is used to generate hot water as a heat source of the MH tank. Thus, 70 kg of LaNi5, one of the most typical alloys used for hydrogen storage, was placed in the MH tank. We present low and high hydrogen flow rate operations. Then, the operations under winter conditions are discussed along with numerical simulations conducted from the thermal point of view. Results show that a large amount of heat (>100 MJ) is generated and the MH hydrogen compression is available.

Photo: (a) MH tank, (b) hydrogen storage unit, and (c) solar thermal panels in the Pure Hydrogen Energy System (Credit: Naruki Endo, Keisuke Matsumura, Yoshiaki Kawakami, Masayoshi Ishida and Tetsuhiko Maeda)

Check more https://adalidda.net/posts/e45PEEeLoehZiQGPp/operation-of-metal-hydride-hydrogen-storage-systems-for
Authors: Naruki Endo, Keisuke Matsumura, Yoshiaki Kawakami, Masayoshi Ishida and Tetsuhiko Maeda Publisher: Taylor & Francis Online Abstract By using a newly constructed bench-scale hydrogen energy system with renewable energy, ‘Pure Hydrogen Energy System’, the present study demonstrates the operations of a metal hydride (MH) tank for hydrogen compression as implemented through the use solar thermal energy. Solar thermal energy is used to genera...
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DJ Wyatt

Nuclear (fusion/fission)  - 
 
One more article regarding Nuclear Energy.
Russia plans to construct 11 new nuclear power reactors by 2030 - including two BN-1200 sodium-cooled fast neutron reactors. A document, which covers "territorial planning for energy" for the period, also identifies six point...
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Bloo Alien's profile photoAndrew Feldman's profile photo
3 comments
 
Russia will collapse in a couple of years, so I don't think any of these reactors will be finished. )
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DJ Wyatt

Nuclear (fusion/fission)  - 
 
Finally, another article regarding Nuclear Energy.
The final "super modules" have been lifted into place in the containment vessel of VC Summer unit 2, marking a milestone in the construction of the AP1000 reactor.
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DJ Wyatt

Nuclear (fusion/fission)  - 
 
More news in the Nuclear Energy sector.
Shikoku Electric Power Company announced today that it had initiated the process to restart unit 3 of its Ikata nuclear power plant in Japan's Ehime prefecture. It becomes the fifth Japanese reactor to resume operation under new safety standards introduced following the March 2011 accident at the Fukushima Daiichi plant.
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Martin “Jaffa” S's profile photo
 
Have they managed to stop AND CONTAIN the damage to fuck-you-shima yet? Is it still killing our seas? Yes let's have more nuclear it's perfectly safe! Especially in a stable land like Japan. 
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Solar thermal collectors use reflector to gather sunlight and generate stem. This stem can be use to drive complex power station turbines...
Although a new world record has been set for solar thermal efficiency. This is done by scientists from Australian National University.
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Bill Juhasz's profile photo
 
The article is very hard to read (I am assuming a bad translator app is to blame) but as I understand it they are claiming 97% solar to heat conversion. Some discussion of how solar thermal efficiency is measured, and some numbers to compare to would help put this 97% efficiency claim into perspective.

A piece of flat black painted steel, or even black paper, will get roughly 95% efficiency converting sunlight into heat. But, as the temperature of the black steel panel increases to something significantly above the ambient temperature the simple black panel "solar collector" will begin to lose energy to the environment (by conduction, convection and radiation), and so the overall efficiency of collecting usable solar energy will quickly drop off. If the black painted panel is placed on an insulation pad and put under a layer of glass the amount of energy lost to the environment will decrease but the cost will go up (and the glass will actually block some of the sunlight from reaching the panel, about 10% loss).

Some solar thermal collectors add vacuum insulation that bring the conduction and convection losses to near zero, so they can operate efficiently at higher temperatures. The next step is to add a selective emissivity coating to the panel to greatly reduce radiation losses (heat radiating from any hot surface through space). This type of solar thermal collector is often built in a tubular form to allow the vacuum envelope to be built with relatively thin glass thereby reducing cost and mass (vacuum tube solar collector).

The type of collector cited in the linked article is a concentrating solar collector. The article claims a 2000+ concentration, which essentially increases the amount of solar energy reaching the collection device (the receiver at the focal point of the mirror) to 2000 times normal solar insolation level. The major issue with highly concentrating solar collectors such as this one is that they need to be extremely accurately aimed (they require a very careful 2 axis tracking system) and they can only focus direct sunlight on the receiver (so diffuse light, which is usable by normal solar collectors, is wasted). If the sky is very clear, with little haze or dust or clouds, then most of the radiation reaching the earth at that location will be direct but, if there is even a bit of haze or dust in the air then much of the available solar energy will be wasted. On a cloudy day this concentrating collector will receive near zero energy while a non-concentrating collector might still receive substantial energy.

So, putting aside the question of whether or not the cited 97% efficiency is even possible (not saying it isn't) that number could only be achieved on the clearest possible day. On average, a concentrating collector such as this will see perhaps 20-30% less energy than a flat plate collector, so even if the ideal maximum efficiency is 97%, the overall yearly efficiency will be significantly lower in any real world environmental conditions.

Concentrating collectors are generally used under 2 conditions: 1. If the collector is PV, and the PV cells are very expensive (as the cost of PV has decreased there is little potential to save money with concentrating collectors). 2. One needs very high temperatures. A concentrating collector can achieve reasonable efficiency at higher temperatures than most practical non-concentrating collectors, but at the cost of complexity and loss of diffuse radiation.

So, bottom line, the 97% efficiency quoted (if true) would only be under the conditions of extremely clear skys (think top of a tall mountain in a desert) and at low operating temperatures. Real world efficiency would much more modest.
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Are you looking for solar panels which are for sale? You can save all the hassle of researching solar panels for sale through Solar Broker, your online source of information for solar panel sales. You can request up to four free quotes which cover your solar panel installation needs.
#solarpanels   #solarpower   #solar   #power   #panels   #electricity   #energy   #greenenergy  
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About this community

A place for discussing everything about energy with a focus on making more sustainable power available to our world.

Josh Marks

General Discussion  - 
 
Go Costa Rica! The Central American nation has been running on 100 percent renewable energy for 113 days and counting! The goal is a full year without fossil fuels and to be completely free from fossil fuels in just five years. 
Costa Rica has run on 100-percent renewable energy for the past 113 days, edging closer to its goal of being completely free from fossil fuels.
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Eugeny Kovrigin's profile photoBill Juhasz's profile photo
3 comments
 
As I would have suspected, and as they stated in the article, Costa Rica got almost all of their renewable energy from hydro power. While hydro doesn't generate much in the way of CO2 emissions, it reeks havoc on the marine life in the water. The US is slowly moving away from hydro power because of the environmental impact, in spite of the desire for lower CO2 emissions.
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Kirill Klip

Energy storage (heat storage, batteries, fuel cells, etc.)  - 
This is the real commercial energy storage offer in Australia. Tesla is moving fast to conquer the market with Powerwalls and Powerpacks while McKinsey&Company is giving the validation to the big customers to invest in lithiu...
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Building integrated solar is already a thing, and solar on wheels is not far behind. One of the latest examples is the US company eNow. Company founder, president, and CEO Jeffrey Flath graciously made a stop at my hometown last week with one of his solar-equipped trucks to provide CleanTechnica with an exclusive look at
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Guido Stepken's profile photoMartin “Jaffa” S's profile photo
7 comments
 
+P Grimm I stand partly corrected sir. The BMW truck is a start, but at only 62 miles before dead flat needs a lot more work. The other link (Nickola) had better news, but I think cost is still a major issue, as well as charging times.
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Chester Kang

Nuclear (fusion/fission)  - 
 
http://www.latimes.com/nation/la-na-new-mexico-nuclear-dump-20160819-snap-story.html

High build cost, high running/waste management cost, high risk... but they at least (tried to) save some money ...kitty litter...
When a drum containing radioactive waste blew up in an underground nuclear dump in New Mexico two years ago, the Energy Department rushed to quell concerns in the Carlsbad desert community and quickly reported progress on resuming operations.
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DJ Wyatt

General Discussion  - 
 
News regarding electrical vehicles, DHL delivery vans.
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DJ Wyatt

Nuclear (fusion/fission)  - 
 
News in the Nuclear Energy sector.
Unit 2 of the Changjiang nuclear power plant on China's southern island province of Hainan has entered commercial operation, China National Nuclear Corporation (CNNC) announced today.
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Alex P

Green, climate change, and bio-environmental impact  - 
 
Zero Waste Cities :)
 
4 min clip explains how San Francisco plans to become a zero waste city by 2020, in another step towards a zero emissions, 100% electric and 100% renewables future. :)

See why (eco+public health+etc reasons) i installed solar panels equivalent to planting 322 treeshttps://plus.google.com/+AlexP/posts/FHtw2ri5Dq8 and why i drive an electric car equivalent to planting 382 trees (if the oil car would be refilled weekly) ► https://plus.google.com/+AlexP/posts/TQboBAji7uo.
If your panels produce more electricity than you use, you get free charging for your car too, like me. :)
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Kirill Klip

Energy storage (heat storage, batteries, fuel cells, etc.)  - 
The future is here and it is electric. Now we can see how all 3 parts of Elon Musk Master Plan 2.0 are working together: Solar Panels, Energy Storage and Electric Cars. Elon Musk Will Build Tesla Solar Cities: The G...
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Derick Ajumni

Infrastructure / energy use efficiency  - 
 
The #technology of the future -- that will allow for a more eco-friendly relationship with our #environment is rapidly approaching. In order to better understand the impact of these technologies, we have outlined them into two distinct areas: saving at home, and saving on the road.
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