Energy Management

U.S. Forest Service issues final wind use directive

Energy Management
This article come from law firm Stole Rives LLC, (www.stoel.com), and is authored by Sarah Stauffer Curtiss, Heath Curtiss, and Aaron Courtney Nearly five years after issuing its draft directives, the U.S. Forest Service recently issued final directives for wind energy special use authorizations. See 76 Fed Reg 47,354 (Aug. 4, 2011). The new directives [...]

Hub-height wind data leads to better financing terms

Energy Management
There is increasing pressure from wind project financiers to reduce the uncertainty in wind-resource data. One company says it hears more often that developers are gathering wind data at elevations closer to a turbine’s hub height, to get projects financed. The uncertainty come in data extrapolated up from 60-m towers, while most turbine hub heights [...]

Mechanical relay modules switch up to 12x power in same of space

Energy Management
Recent Snap-OMR6-A and Snap-OMR6-C mechanical relay modules fill an important need for engineers, plant managers, technicians, and others seeking a cost-effective way to switch higher voltages and currents without need for breakout boards, header cables, or other interposing hardware. The Snap-OMR6-A and OMR6-C power relay output modules have four separate channels of switching for up [...]

European experience valuable to U.S. offshore developers

Energy Management
As players in the US offshore wind industry work to complete the nation’s first commercial offshore wind project, a look at European development suggests one possible path for American offshore wind. A few observers point to the European programs as a model for U.S. development. European experience illustrates the technical and financial, feasibility of large-scale [...]

Free leak-detection training

Energy Management
Wind-turbine manufacturers and other alternative energy producers that use leak-test instrumentation on production lines for inspecting solenoid valves, tanks, and fuel lines for leaks and similar leak detection applications can improve operations through improved training at no-charge from Uson. Hands-on leak-detection training sessions are held in various Uson worldwide locations and in some cases on-site [...]

Storm-safe disconnects minimizes hazard

Energy Management
The Blackburn Storm-Safe Service Entrance Disconnect System from Thomas & Betts de-energizes and releases utility service entrance cables when they are struck by debris, eliminating a safety hazard to the public, emergency responders and utility repair personnel. The Storm-Safe system lets utility repair personnel restore power quickly and at minimal cost by installing a new [...]

Saving Energy with IE3 Motors & HPC KAESER

Energy Management
Unified worldwide efficiency classifications for low voltage three-phase asynchronous motors are being introduced as part of a concerted international effort to increase energy efficiency and, unsurprisingly, HPC KAESER screw compressors are already being equipped with premium efficiency motors in accordance with these newest standards.

Defining Energy Efficient Motors
The efficiency of an electric motor is de-fined as the ratio of usable mechanical power to electric input power. In Europe, low-voltage three-phase motors were previously divided into EFF3, EFF2 and EFF1 efficiency classifications. Differences among various national systems with regard to scope and classification prompted the International Electrotechnical Commission (IEC) to develop a unified standard. In parallel, the IEC’s improved methods for determining efficiency were revised and standardised. The new IEC 60034-30 standard de-fines and harmonises IE1, IE2 und IE3 efficiency classifications for low-voltage three-phase motors worldwide.

Former European Motor Efficiency Classifications and Previous Measuring Methods
The voluntary agreement between the European Committee of Manufacturers of Electrical Machines and Power Systems (CEMEP) and the European Commission, in effect since 1998, defined three efficiency classifications:

• EFF3 = Standard efficiency motors
• EFF2 = Improved efficiency motors
• EFF1 = High efficiency motors

The minimum values for the various classifications were based on efficiency measurements in accordance with EN60034-2:1996.

Gelpack cuts compressed air energy bill by 45%

Energy Management

“Gelpack Industrial Ltd has made an annual saving of over 45% on energy used to generate compressed air using a retro-fit Variable Speed Drive package from EnergAir”

A compressed air audit conducted at Gelpack Industrial Ltd revealed that 40.18% of the input energy used to power the compressors was not productive, and that system pressure was higher than required. This was due to the inefficient operation of two fixed speed, 75kW, Worthington Rollair compressors, which were used on a rotating basis to provide compressed air to the factory. The audit highlighted the potential savings that could be made by retro-fitting a variable speed drive (VSD) to reduce offload running and match air generation more closely to system demand.

Charging stations almost ready for your first electric car

Energy Management
Wind power design, wind turbine construction, renewable energy news | Windpower EngineeringWindpower Engineering – Wind Power Design | Construction | Maintenance resource » >> 
ABB DC fast charge stations will son rapidly recharge electric vehicles. Depending on the battery and vehicle, recharged range of greater than 100 km in less than 10 min is readily achievable, says ABB. Keeping the heavy and expensive power electronics and filters required for high power charging outside the vehicle and in a common [...]

No-drift absolute gaging package

Energy Management
Wind power design, wind turbine construction, renewable energy news | Windpower EngineeringWindpower Engineering – Wind Power Design | Construction | Maintenance resource » >> 
The Acanto Absolute Length Gage with EnDat 2.2 has the benefits of an optical encoder and solves many of the problems of different length gages. Quality managers will not have to worry about gages drifting, linearity over the entire measuring range, or referencing upon startup. The device does not drift over time nor does it [...]

Portable circular mill machines large tower flanges on-site

Energy Management
Wind power design, wind turbine construction, renewable energy news | Windpower EngineeringWindpower Engineering – Wind Power Design | Construction | Maintenance resource » >> 
 The CM6200 Portable Circular Milling Machine expedites on-site machining of large flanges from 73.5 to 199-in. (1866.9 to 5054.6 mm) diameter. It can mill the extremely tight flatness tolerances required for wind tower flanges as well as a surface finish of 63Ra (1.6Rm). The circular mill can be configured for milling or single-point machining as [...]

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