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A company called GreenCore Air has released an air conditioner than can be powered by a single 170 watt solar panel. The GreenCore air conditioning unit can heat and cool a 600 square foot room. It runs on DC power, so there is no need to put an AC inverter between the solar panel and the air conditioner. This eliminates the power losses associated with converting AC to DC

A company called GreenCore Air has released an air conditioner than can be powered by a single 170 watt solar panel. The GreenCore air conditioning unit can heat and cool a 600 square foot room. It runs on DC power, so there is no need to put an AC inverter between the solar panel and the air conditioner. This eliminates the power losses associated with converting AC to DC. When the sun is not out the unit runs on the battery bank which is integrated within the unit. There two version of the air conditioner: a fixed one, and a mobile one that is mounted on wheels. GreenCore units are being tested by a McDonald's restaurant and the U.S. Navy.

"About EV Charging Stations The power of electric vehicle chargers is expressed in kilowatts (kW) - the higher the kW the faster the vehicle gets charged. Electrical vehicle are fed through EV chargers, in AC or DC current. Straight from the grid, AC charging stations are less expensive as they do not require inverters and provide current directly to the on-board vehicle charger. DC charging stations supply current to the vehicle battery and usually provide less time to charge."

Despite the current economic downturn, the market for low voltage ac and dc motor drives remains robust. It is a similar story for the higher voltage market with 2009 already seeing a number of new product launches aimed at the process industries.

"The partnership is focused squarely on standardization of automatic e-bus fast charging, including the communications protocol between the infrastructure charging solution and e-bus, the electrical interface and specifications for the rooftop automatic connection system (ACS)."

Hand tools for use up to 1 000 V AC and 1 500 V DC

Ultra High Voltage DC "Driven by economic growth, demand for power and the need to efficiently integrate renewable power generation, it is clear from developments in AC networks that UHVDC will have a major role to play as power systems evolve."

Monday, 28 July 2008 \nGuangdong Chigo Air Conditioner, a large-sized modern enterprise integrating the development, production and sales of household and commercial air conditioners, recently announced its agent in Egypt successfully won the contract for the Huawei correspondence station in Egypt after seven hardworking months.\n\n Huawei is said to have already achieved 12.56 billion dollars sales revenue, becoming one of the top five global telecommunications equipment producer, now with primacy globally, especially in Africa. Contracts for the correspondence station of Huawei in Egypt were mainly in the hands of Carrier for a long time, which means other brands could not compete with it and usually did not pass the test phase. Because the equipment for each station was valued at over 300 thousand yuan, the AC units could not run for a long time without a reliable capability guarantee. Right now the first set of Chigo splits is already installed in the station.\n\nThe vice president of Chigo Overseas Marketing Department , Mr. Peter Liao, said :"The success of this project means a lot for us. The intergrated ability of Chigo is already at new stage, being the supplier of a globally famous communication company. The cooperation with Huawei is meaningful for Chigo's development in the North African and African markets." For the success of the Huawei project, Huawei's subsidiaries in Libya and Sudan have also started to cooperate with Chigo, reveals the company's press release. \n\n\n

PKE is the new range of ECO Coils&Coolers branded air condensers launched by Luvata for commercial AC and refrigeration applications. It is the enhanced offspring of the PCE range (currently phasing out), with improved efficiency and optimized sound emission parameters. Like all ECO Coils&Coolers ventilated units, even the PKE range is available for CO2 applications. The PKE offers an improved hauling and fastening system, thanks to new features. Moreover, the side panels are removable allowing easy access to the units' internal compartments, which have been increased by 120 mm. In order to facilitate maintenance and service, the PKE range has also been equipped with special door holders with a hold open feature. For models with 4 and 5 fan motors, the number of doors has been reduced and the width has been increased, as to allow easy access to the internal components. Lastly, the base has been reinforced for particularly difficult installations. On the other hand, thanks to a compartment incorporated with the condenser to enclose the compressing and the electrical control units, called housing, the PKE range does not require long connection pipe-work, thus reducing the risk of possible leaks. The special internal surface of the compressor compartment has been designed so as to increase sound absorption, reveals the company's press release.

Dwarfed by any of the north African nations, it represents an area slightly smaller than Wales but scientists claimed yesterday it could one day generate enough solar energy to supply all of Europe with clean electricity. Speaking at the Euroscience Open Forum in Barcelona, Arnulf Jaeger-Walden of the European commission's Institute for Energy, said it would require the capture of just 0.3% The scientists are calling for the creation of a series of huge solar farms - producing electricity either through photovoltaic cells, or by concentrating the sun's heat to boil water and drive turbines - as part of a plan to share Europe's renewable energy resources across the continent. A new supergrid, transmitting electricity along high voltage direct current cables would allow countries such as the UK and Denmark ultimately to export wind energy at times of surplus supply, as well as import from other green sources such as geothermal power in Iceland. Energy losses on DC lines are far lower than on the traditional AC ones, which make transmission of energy over long distances uneconomic. The grid proposal, which has won political support from both Nicholas Sarkozy and Gordon Brown, answers the perennial criticism that renewable power will never be economic because the weather is not sufficiently predictable. Its supporters argue that even if the wind is not blowing hard enough in the North Sea, it will be blowing somewhere else in Europe, or the sun will be shining on a solar farm somewhere.

"General Cable's STABILOY® and NUAL® Brand aluminum alloy building wire offering consists of the following: STABILOY® Brand of Service Entrance Cables (SER/SEU) and non-residential cables including Metal Clad (MC), FeederPlex HS® (High Speed) XHHW-2, and WIDESTRIPE HS® (High Speed) XHHW-2 for the U.S. market. The NUAL® Brand of aluminum alloy building wire offers similar cable constructions of AC90, FeederPlex HS® RW90, WIDESTRIPE® RW90, TECK 90 for the Canadian market. "

Another one in a series of studies on this topic. This one predicts an 87,000% increase in the demand for battery materials which is not very helpful. Exponential extrapolation from a small basis over a long time horizon can basically come up with any growth figure. The logistic growth curve is a much better and proven model for technology transitions.

"Demand for cobalt, copper, lithium, cadmium, and rare earth elements needed for solar photovoltaics, batteries, electric vehicle motors, wind turbines, fuel cells, and nuclear reactors is set to explode in the coming years as countries around the world invest heavily in greening their economies".

Orginal source: https://science.sciencemag.org/content/367/6473/30 (though (also behind a paywall) and http://www.sussex.ac.uk/broadcast/read/50598. The latter mentions the 87000% figure referred to in the above comment.