Aug 31, 2009 Energy Talks
EEStor, the now famed ultracapacitor maker of the future is one step closer to having a product coming to market. Last week saw information escape that EEStor has contracted with Polarity of Rancho Cordova, California to design and specify the construction details of the ultracapacitor’s power converter. A power converter would ideally provide a combined capacitor and controller set to deliver steady electrical energy at optimal voltage and amperage.
The power converter would be effectively a transformer, a device that steps down the ultracapacitor’s high voltage to a lower voltage that can be used in motors and other devices. Reports have it that the EEStor capacitor’s voltage peak is about 35 to 37 hundred volts, much more than electric motors are currently designed to cope with. Although high voltage allows smaller wires, lighter weights, and other attributes, insulating for high volts has it own issues such as more dimensional needs meaning a larger physical size, voltage insulation that can contain the “pressure” as high voltage much more easily jumps away to grounds, penetrates insulation, and can heat conductors very quickly.
The power converter speculation is supposed to reduce the voltage to the more familiar 600-volt range. Many insulation types can deal with voltages in that range at low cost and the dimensional issue nears optimal with today’s technology. At to 400 to 600 volt range, particularly using alternating current very high power output can come from very small packages.
This writer is also assuming that Polarity will offer the power converter with an internal method of providing steady output voltage from capacitors that one expects have voltage drop as they are drained. Thus the transformer inside would be a variable type that adjusts to the available voltage while the load voltage is a constant.
Some sites are crediting Polarity’s photos, links and products to the EEStor contract. Those assumptions are certain to be in error, even if interesting. A little closer reading of the Polarity site makes clear that the products on hand have existing markets. Most products have generator or battery input voltages; no mention is easily seen of ultracapacitor input products. As noted the voltage decline will entail certain design modifications to extract the maximum available charge.
Meanwhile snoopy reports have it that EEStor will prove publicly the capabilities of their technology before the end of September 2009. The context of these, blogs, hypetype news media, etc. tend to overstate the ‘proving” but EEStor may well have announcements in that area.
Factually though the whole thing is based on Polarity’s tight acknowledgment saying on their site, “Awarded contract from EESTOR to integrate Polarity’s high power HV to LV converter into EESTOR’s EESU that will be used in Zenn Motor Company’s small to medium size electric car.” EESU would be “electrical energy storage unit.”
It seems to be time for those seriously interested in electron storage to come up to speed with EEStor. This is a link to a transcript of Mr Weir, of EEStor and Tyler Hamilton, senior energy reporter and columnist for the Toronto Star. Significantly, at 14:04 where Weir says,
“We’ve taken those specifications to our circuits company that builds our circuits for us. A company called Polarity. They’re out of California. ZENN has gone there and came back very impressed. I was lead to them by the Air Force Research Labs because they’re so effective in building high performance converter circuits for them. However there are multitudes of companies around the world that could build these circuits in high volume. But, I got started with them so … they’re building our circuits right now. They’re actually putting the ZENN circuits together literally as we speak. I’ll be going out there, if not next week the following week after that to have a long session with them to talk about getting the parts in here quickly so I can not only do … I don’t want to stop and build circuits for component testing I want to use their circuits for full EESU testing. Which is also component testing. So I kill 2 birds with 1 stone there. And get that in here and get that tested and get UL in here start looking at it. So, that’s going quite well.”
Of major note, Weir is suggesting that UL aka Underwriters Laboratories has been invited in to start their process. Things are much further along than thought.
While much is made of the impact the EEStor device might make across the whole of the electric spectrum Weir reminds us at 24.28 that:
“You can take the grids of the world and put our batteries on it and charge ‘em at night and dump ‘em during the day. Well known fact you can put 45% more electricity on the grid and do nothing more than put our batteries on there.”
This could be a very advantageous development for consumers when peak demand generation has serious competition.
Go here to see the original: New Energy and Fuel
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Aug 31, 2009 Industrial Controls
This guide provides information that will assist you in planning and designing activities, as well as the installation, operation, and troubleshooting of C300 Process Controllers in an Experion system.
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Honeywell C300 Controller User Guide EPDCX4641
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Aug 17, 2009 HVAC
The Engineering Cookbook is a convenient pocket reference guide for mechanical designers. It provides “fingertip” access to frequently needed information, including:
- System Design Guidelines
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This handy engineering information guide is a token of Loren Cook Company’s appreciation to the many fine mechanical designers in our industry.
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Engineering Cookbook – A Handbook for the Mechanical HVAC Designer
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Aug 5, 2009 Energy Talks
Green Sustainable Solutions…
The idea of a living wall or green facade is as old as architecture itself, prominent in Europe and many other countries around the world. Everyone has seen buildings and homes covered in ivy and while this is literally a living wall, it is apparent that the motivation to allow the ivy to grow was not energy savings at the time.
Living walls and green facades are an untapped resource in themselves, the savings from placing a living wall on the south side of a structure can me immense in warmer climates saturated with air conditioning. There are even benefits in cooler climates if the plants chosen are an evergreen variety.
Living walls can take may shapes and forms as diverse as architecture and still the idea really is not as popular as one would think it could be. Many people associate living walls with that ivy covered building and many people understand that the ivy itself can cause damage to structures and can even create an eyesore under certain circumstances.
As energy costs rise, the green movement gathers strength and as our recent recession seems to have a life all it’s own many people are looking for innovative, easy and inexpensive ways to save energy. This very well could be one of those solutions if people would take the time to look at the concept a little closer.
Today many solutions such as cable restraints, wire panel grids and even modular vertical planters are available all intended to keep that living wall off the wall itself. These concepts are generally considered green facades.
The idea is simple but effective as it allows the plants to grow and spread while preventing or minimizing damage to the structure. We will all be seeing these solutions put into practice much more here in the U.S. as commercial facilities warm to the idea, plans are in the workings for even high rise office buildings to have living green facades installed on the sides of the building.
I am sure this will come as a surprise to many Americans and hopefully will increase the awareness of the concept and we will start to see many more living walls on homes around the country. This is definitely one concept that should be embraced as the benefits are far reaching for both your pocket book and the environment by reducing the heat island effect and improving air quality.
There are many sites on the web to learn more about living walls and green facades, where you can learn about what plants to use, do it yourself solutions and find out about the many products that are now available. The above link is one of those sites that is a good resource and starting point. Watch for living walls to pop up where you least expect them and watch for the diversity of the concept to grow in the next decade as the popularity increases simply by the awareness that will be generated by it’s use.
Brought to you by Ameri-Serv, Inc. Heating and Cooling
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