The wind industry's main trade show kicks off this week in Dallas, bringing with it a flurry of announcements about new wind turbine technology. Meanwhile, keep watching the EE&T site as we will soon be posting video from our recent one-day technical symposium. As always, send us your energy efficiency news. -- Leland Teschler, Editor [email protected] Read More
Labels that go on European household appliances such as refrigerators, washing machines and ovens will soon need to include more information on energy consumption. EU legislators recently approved a new layout of the EU energy efficiency label introducing additional classes and approved new energy efficiency legislation for buildings, to apply by 2020. READ MORE Read More
Gearboxes in utility scale wind turbines have a reputation for needing repairs long before their maintenance schedules predict they should. The culprit seems to be unexpected loading conditions on the turbine blades. That's why the U.S. Dept. of Energy's National Renewable Energy Laboratory installed a special dynamometer capable of simulating the off-axis loads and related conditions created by wind gusts and other environmental realities. READ MORE Read More
Bimba Introduces New Electric Actuators
After more than 50 years of pneumatic leadership, Bimba introduces its first ever rod-type electric actuator—the Original Line Electric (OLE). Designed, built and tested to provide the greatest durability, highest speed and most thrust per dollar, Bimba’s OLE actuators are ideal for applications requiring increased control and flexibility. Just like Bimba’s trusted Original Line pneumatic cylinders, OLE actuators deliver the quality, durability, delivery and outstanding customer service you’ve come to expect.
New efficiency standards that apply to outdoor lighting are in the works. Legislation now being discussed in the Senate Energy and Natural Resources Committee includes the National Energy Efficiency Enhancement Act of 2010 (S 3059) which would set standards for pole-mounted outdoor lights and would direct the Dept. of Energy to decide whether the standards should be modified in the future. The standard also puts limits on skyglow and light trespass. Moreover, it would prohibit the making of general purpose mercury vapor lamps. READ MORE Read More
A trio of inventors have devised a fuel cell-based device they say uses the sun to break water into hydrogen and oxygen, saving the oxygen for medical uses and using the hydrogen to power a fuel cell which provides the energy to run a water purification system. Called the Hydra, it will list for $99,500 and targets medical clinics, schools, remote communities, and disaster relief agencies. READ MORE Read More
Vertical wind turbines have a number of technical advantages which seem to be catching the attention of the wind industry
In 20 years, you may find yourself riding a commercial airliner based on energy efficient designs from M.I.T.
Constructive hydrodynamic interference between the wakes of neighboring fish has led to an idea about efficiently configuring vertical wind turbines.
Sharp Electronics has entered the Illumination LED market
Now you can listen to your light fixture
Get a PhD in energy
Another super-bright LED downlight
Tidal generators could get a boost from tests slated for next year Read More
The LEDC10 Series of dc-dc LED drivers are designed for LED lighting applications with output ratings up to 10 W. The nonisolated, constant-current LEDC10-12-R48, housed in a single in-line package, operates with dc input of 4.5 to 20 Vdc. The driver provides a 0 to 480-mA programmable constant-current output with a drive voltage of 3 to 20 V.
The constant-current output range is programmable via external logic levels or jumpers connected to trim pins on the driver. A light-dimming control operates via a PWM control input with a 10 to 100% duty cycle, or by using logic-level trim inputs. Applying different combinations of logic “1” and “0” levels to the trim inputs, changes the maximum output drive current to 50, 150, 350, and 480 mA.
The convection-cooled drivers operate from –40 to 85°C at full load without derating. Typical efficiencies are 87%. Standard features include overcurrent and overvoltage protection.
TDK-Lambda Americas Read More
Twitter is a free service that lets you keep in touch with people through the exchange of quick, frequent answers to one simple question: What are you doing? Join today to start receiving EE&TMagazine's tweets.
LinkedIn is a place for millions of professionals to exchange information, ideas and opportunities.
Register to be a member of the Energy Efficiency & Technology group! Read More
SEW is excited to announce the new efficient DR Motor series. This modular system of AC motors is available in three efficiency levels: standard, high-efficiency and NEMA Premium® efficiency. The modular DR motor offers a single series with millions of drive combinations; other customizable options include brake size, cost-optimized encoders, and mounting type. All three models comply with worldwide efficiency and energy standards. Visit www.sewmotortruth.com. Read More