Defects in Carbon Nanotubes Could Lead to Improved Charge and Energy Storage Systems Nov 21, 2009
"It is important to control this process carefully as too many defects can deteriorate the electrical conductivity, which is the reason for the use of CNTs in the first place. Good conductivity helps in efficient charge transport and increases the power density of these devices," Bandaru added ... The researchers think that the energy density and power density obtained through their work could be practically higher than existing capacitor configurations which suffer from problems associated with... (Science Daily)
MTI Micro in cash crunch Nov 14, 2009
It would be especially disappointing because the company recently said it had improved the power density of its Mobion fuel cell by 30 percent. Power density measures the amount of power that can be packed into the fuel cells in a certain amount of space. (Albany Times Union)
Hydraulic Hybrids Nov 8, 2009
The high power density of the hydraulics allows both performance increases as well as fuel economy ... The high power density of the hydraulic system also improves acceleration and performance as well as fuel economy and emissions ... This is because of the high power density which improves vehicle acceleration and because of the highly efficient regenerative braking. (Suite101.com)
Laser Fusion And Exawatt Lasers Oct 17, 2009
Another figure of merit for a laser, in addition to power, is power density. The Texas device is capable of producing power densities exceeding 1021 watts per square centimeter. (Science Daily)
Smaller And More Efficient Nuclear Battery Created Oct 10, 2009
To provide enough power, we need certain methods with high energy density, said Jae Kwon, assistant professor of electrical and computer engineering at MU. The radioisotope battery can provide power density that is six orders of magnitude higher than chemical batteries. Kwon and his research team have been working on building a small nuclear battery, currently the size and thickness of a penny, intended to power various micro/nanoelectromechanical systems (M/NEMS). (Science Daily)
Sugar + Weed Killer = Potential Clean Energy Source Oct 1, 2009
Now we re trying to get the power density higher so the technology will be more commercially attractive. Since they wrote the paper, the researchers prototype has achieved a doubling of power performance. (Science Daily)
Telx data center expands Phoenix footprint Sep 21, 2009
The expanded space at 120 E. Van Buren St., increases Telx s available capacity in Phoenix by more than 50 percent, and will provide some of the highest power density in the downtown Phoenix market, said CEO Eric Shepcaro. Telx remains committed to serving customers in key markets like Phoenix with the best colocation and interconnection options available, said Shepcaro. (Phoenix Business Journal, AZ)
Whitepapers: APC IT InfraStruXure Resource Center Aug 29, 2009
Latest generation high density and variable density IT equipment create conditions that room cooling was never intended to address, resulting in cooling systems that are inefficient, unpredictable, and low in power density ... A floor plan strongly affects the power density capability and electrical efficiency of a data center. (IntranetJournal)
Turbo Power Systems Inc. (TPS) Announces Results for the Second Quarter and Six Months Ended 30 June 2009 Aug 14, 2009
- designs and manufactures high-speed permanent magnet based motors and generators for industrial, transport, power generation and military applications, where technical performance, energy efficiency and power density requirements cannot be met by conventional technology. - designs and manufactures power electronics products which include variable frequency drives and inverters, which combine with our electrical machines to create an integrated solution, and a range of rugged power conversion... (CCNMatthews Press Releases)
Sony Launches High-power, Long-life Lithium Ion Secondary Battery Using Olivine-type Lithium Iron Phosphate as the Cathode Material Aug 12, 2009
By combining this new cathode material with Sony's proprietary particle design technology that minimizes electrical resistance to deliver high power output, and also leveraging the cell structure design technology Sony accrued developing its current "Fortelion series" lithium ion secondary battery line-up, Sony has realized a high power density of 1800W/kg and extended life span of approximately 2,000 charge-discharge cycles. Furthermore, with this new battery able to charge rapidly, in addition... (JCN Network, Japan)
All Aboard the Eco-Express: Rail's Hybrid Energy Solutions Aug 7, 2009
Pros and cons The challenges that arise in developing hybrid locomotives such as power density and durability are the same as in cars, but on a bigger scale because of the heavy load and harsh vibrations associated with rail freight, says Glen Merfeld, manager of 's chemical energy systems lab. 1. (Scientific American)
LED Suspended Luminaire Designed by Peerless Lighting Wins Lightfair Design Innovation Award & Best in Category Jun 20, 2009
Individually spaced luminaires effectively light an environment to meet the power density requirements of ASHRAE 90. 1. (Yahoo News -- Press Releases)
Horizon's Fuel Cells Power the World's First Affordable Hydrogen Car Jun 16, 2009
But when changing the configuration and coupling the high energy density quality of fuel cells with higher power density ultra-capacitors, it is possible to greatly increase the performance of electric vehicles while reducing their cost. Ultra-capacitors are charged by the car's regenerative braking system, providing power for acceleration. (PR Newswire)
Wind Power Tapped By High-flying Kites Jun 16, 2009
The researchers assessed potential for wind power in terms of "wind power density," which takes into account both wind speed and air density at different altitudes ... "New York, which has the highest average high-altitude wind power density of any U.S. city, has an average wind power density of up to 16 kilowatts per square meter." ... Tokyo and Seoul also have high wind power density because they are both affected by the East Asian jet stream. (Science Daily)
India, where the renewable energy business potentialities grow aplenty Jun 16, 2009
Then the solar power density for the conditions mentioned will be 60 x. 6 x10/24 x.80 = 12 watts/m^2. (Energy Pulse, CO)
Air Force Funds New Energy Efficient Unmanned Aircraft May 28, 2009
Air Force officials fund new generation of energy efficient unmanned aircraft (DOD DefenseLINK)
Day4 Energy Reports First-Quarter 2009 Results May 15, 2009
By fundamentally improving on the design and assembly of solar modules, Day4 Energy produces unique PV panels of high power density, increased lifetime and uncompromised aesthetic appearance. Day4 Energy partners with international technology leaders to develop and deliver IEC- and UL-certified solar products to customers throughout Europe and North America. (Canada Newswire)
TriQuint retains GaAs foundry lead Apr 18, 2009
GaAs also is expected to dominate the long-range, metropolitan area data transmission markets, according to TriQuint, since it has higher power density, lower noise and higher linearity than silicon. "We monitor next-generation CMOS, silicon germainium and silicon-on-insulator based RF chips as the biggest threats to our gallium arsenide chips," said TriQuint CEO Ralph Quinsey. (EETimes)
The Saga of Permits for Telecom Masts Apr 11, 2009
Some of the first pioneering studies had methodological flaws, including short duration of cell phone use for risk assessment, exposure of radiofrequency not rigorously determined, little if any data about wave or power density, and controls that were not well defined. The EPA said whiles preparing to undertake a vigorous public education to correct the "wrong perception" about the effects of electromagnetic radiations, it could not as yet ignore the myriad of complaints by the public and issue... (Ghana Web, Ghana)
Watertown ZBA approves antennas on Bugaboo Creek building, massage school classes on Sunday Mar 27, 2009
She had a Cambridge environmental company measure the power density of radiofrequency radiation in her attic. The level was equivalent to what s emitted from an active cell phone three inches away from one s body, she said. (Watertown TAB & Press, MA)
Nanotech Batteries For A New Energy Future Mar 23, 2009
"These devices exploit unique combinations of materials, processes, and structures to optimize both energy and power density -- combinations that, taken together, have real promise for building a viable next-generation technology, and around it, a vital new sector of the tech economy," Rubloff said ... Efforts are under way to achieve comparable advances in energy density of lithium (Li) ion batteries but with much higher power density. (Science Daily)
Adverse Health Effects from the Operation of Digital Broadcast Television Stations (DVBT) Mar 10, 2009
p. 507: Interpretation of several observed biological effects of AM electromagnetic fields is further complicated by the apparent existence of windows of response in both the power density and frequency domains. There are no accepted models that adequately explain this phenomenon, which challenges the traditional concept of a monotonic relationship between the field intensity and the severity of the resulting biological effects. (Multichannel News)
Business notes Feb 8, 2009
Chapman begins with a building survey, looking for opportunities to cut down on energy use by employing such strategies as day-lighting to reduce lighting power density; shading to reduce cooling loads; and high-efficiency fixtures that qualify for utility company rebates. Should a client wish to implement any of the energy-saving strategies identified in its survey, Chapman follows its standard construction management model, bidding the work to multiple subcontractors in all of the major trades... (Newton Tab, MA)
