Yokogawa crazy over bench-top power analysis for the alternative energy market

The new Yokogawa WT500 is a compact bench-top power analyzer, which is ideally suited to the requirements of the alternative energy market.

In particular, its compact size, high speed and accuracy make it attractive to manufacturers of photovoltaic generators, fuel cells and wind generators.

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An important feature of the new instrument is its ability to provide a direct indication of sold and bought power in applications where a customer is using a wind or solar generator to supplement the mains power supply.

In such situations, the customer may have a contract with the power generation company where they can sell power instead of buying it if they have an excess, and it is important to be able to measure both the sold and bought power.

The WT500 can carry out DC or single- and three-phase AC measurements at voltages of up to 1000 V and currents up to 40 A, and offers a basic voltage, current and power accuracy of ±0.2 per cent and a frequency range of DC and 0.5 Hz to 100 kHz.

The WT500 will measure voltage, current, power and total harmonic distortion with a high update rate, and features a 5.7-inch (14.5 cm) colour LCD display for showing numerical, waveform and harmonic data. Its three input channels can be set independently to measure different parameters and ranges, making it ideally suited to AC or DC measurements of input/output conversion efficiency.

Optional harmonic measurement functions can be used to measure the harmonic components of the voltage, current and power, as well as the normal (total) measurement values. In addition, the RMS voltage and current (the total of the RMS values of all the frequency components in the measurement frequency bandwidth) can be measured simultaneously with the harmonic measurements.

The WT500 is designed for ease of use, with a set-up key accessing a range of pull-down menus. The ease and speed with which functions and set-up parameters can be accessed is a major advantage in efficiency measurements in a production-line environment.

Easily accessed functions include range selection, scaling, synchronization source, line and frequency filters, update rate, averaging, and integration.

The WT500 can integrate the active power (watt-hour), the current (ampere-hour), the apparent power (volt-ampere-hour) and the reactive power (VAR-hour). During integration, the measured and computed values of normal measurements can be displayed in addition to the watt-hour, current-hour, volt-ampere-hour, VAR-hour, sold/bought power and integration time.

Other features include user-defined functions, frequency measurement, harmonics setting and delta computation. In addition, a ‘miscellaneous’ key displays a menu for system overview, setting the date/time, selecting the message language, selecting the menu language, setting the display colour and setting the self-test function.

Thermo Fisher Scientific angles for multi-gas analyzer improvements

Thermo Fisher Scientific has announced the new Thermo Scientific Model 60i, a full-extractive, multi-gas analyzer that features non-dispersive infrared (NDIR) optical filter technology to ensure accurate, precise measurement of up to six gases, including CO, CO2, NO, NO2, and SO2.

The Model 60i also accommodates an optional O2 measurement capability using either an affordable electrochemical cell or, when high accuracy and reliability are required, paramagnetic technology. In addition, the unit is designed with built-in safeguards that protect the analyzer in the event of a sample conditioning system malfunction.

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The high sensitivity of the Model 60i requires as little as one quarter the flow rate of other instruments, exposing the analyzer and sample conditioning system to less particulate and water for more dependable operation. The Model 60i also possesses a wider dynamic range than other multi-gas analyzers, requiring less configuration.

Additionally, the new Thermo Scientific unit is a “smart” analyzer with on-board electronics that are capable of controlling a calibrator, probe controller and heated sample line, reducing space requirements. With this efficient and uncomplicated gas cell and electronic system layout, plus the analyzer’s two-piece, slide-apart case and interior fold-down divider panel for rapid component access, the Model 60i is very easy to use, maintain and service. The unit is designed to meet U.S. EPA 40CFR Part 60 requirements.

“The new Model 60i multi-gas analyzer will make our customers’ jobs easier and less complicated,” said Michael Nemergut, vice president and general manager for Thermo Fisher Scientific’s Air Quality Instruments business. “With its fewer components and advanced, built-in safeguards, this state-of-the-art analyzer delivers solid dependability and reliability. Moreover, because its components have already been plant-proven through use in other Thermo Scientific analyzers, customers will enjoy the significant benefits of a solid track record of technology based on our well established 48i platform.”

Flaw detectors provide flexible solution

GE Sensing Inspection Technologies has introduced a new family of ultrasonic flaw detectors, providing inspectors with a flexible platform, as inspection needs change.

The Phasor family incorporates conventional and phased array ultrasound technology in three upgradeable models: Phasor CV, Phasor 16/16 Weld and Phasor XS. The tiered platform offers inspectors the opportunity to select the model that best suits their specific application in power generation.

The Phasor XS, the first product in the Phasor family, is a portable ultrasonic phased array flaw detector that provides the highest resolution and probability of inspection. It also offers timed or encoded TOPView software for corrosion mapping.

The Phasor 16/16 Weld is the mid-level solution, which offers phased array and conventional capability within a portable ultrasonic flaw detector. It produces full color image scans that can be stored as a jpg for remote analysis and archiving.

Aggreko powers up with Magnox North

Aggreko, the world leaders in the rental of power, temperature control and oil-free compressed air systems, has won a new three-year contract to supply specialist power generation equipment to Magnox North, to support its electricity generation operations.

This is a renewal of an existing four-year arrangement for the company and was awarded following a tender process.

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The company is providing two packages of equipment to Magnox North’s site at Wylfa on Anglesey, North Wales. The first package has been designed to handle temperature control and is comprised of a 500 kVA generator, three 600 kVA chillers with additional hoses and pumps. Dehumidification is being provided by a 300 kW chiller, a 500 kW air handling unit, six KT7000 dehumidifiers in conjunction with an 800 kVA generator.

The chillers are used to reduce the temperature in the reactor pressure vessel area, making the conditions suitable for the service teams to gain access to perform inspections and carry out maintenance as part of the station’s statutory outage.

Clean air for those working inside is also important and the dehumidifiers condition the flow of air through the reactor pressure vessel while at the same time controlling the amount of moisture absorbed by the graphite core. This reduces the need for a long ‘dry out’ period once the reactor is ready to be brought back on line.

Rachel Wilcox, contracts manager for Magnox North, said: “We’ve worked with Aggreko for a number of years now and are pleased that our relationship is set to continue. Reliability of service and familiarity with operating systems and procedures is essential to a successful relationship with a contractor like Aggreko.”

Alan Smith, Aggreko area sales manager for the central region, said: “We’re delighted to have won this contract and to be continuing to support Magnox with this important maintenance and service programme.

“With such a massive amount of power being generated by the Wylfa station each day to meet the region’s requirements, it is critical that any maintenance operations run as smoothly as possible, without interruption. It’s good to know our products and expertise are providing a reliable and trusted service for our customer.”

Wylfa site is located on a 50 hectare site on the north coast of Anglesey.

Better spray nozzles’ environmental compliance at your service

To help manufacturers take more effective control of environmental issues, spray nozzle experts, Delavan, is bolstering their technical service with dedicated industry specialists.

Delavan’s sector specialist, Andy Nixon explained, “Client spray nozzle requirements vary greatly depending on their plant set-up and environmental objectives. Nozzles for gas cooling, for example, need to deliver liquid in volumes proportional to flue gas flow, with even distribution and small droplet size. This ensures complete evaporation of the droplets for maximum cooling, but without residual excess fluid use or wetting that could harm the plant.”

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Swirl Air two-fluid nozzles from Delavan ensure user processes can comply with stringent environmental standards, yield higher product quality and maintain process continuity to increase plant productivity. Swirl Air nozzles provide flow rates from one to 9100 litres per hour and spray angles from 50 to 100 degrees with precise control of droplet size.

Swirl Air nozzles provide the adaptability to meet variable process needs. There is a correlation between exhaust volume and temperature and the nozzles have the capability for flow adjustment so that output can be fine tuned to meet the prevailing requirement.

Applications arise in incinerators, cement production, metal production and other industries where there is a need for flue gas cooling or gas conditioning to remove harmful gasses or particles. Delavan engineers work closely with end users and the manufacturers of environmental control systems to select nozzles that optimize flow, distribution and droplet size to meet the environmental objective.

Swirl Air nozzles require just two inputs, the spray liquid and the propellant gas. This propellant is usually compressed air but could be an alternative gas or steam depending on the process or availability. As a nozzle specialist, rather than a provider of standardized off-the-shelf turnkey systems, Delavan are able to take into account fully, the client’s air and liquid delivery systems and recommend nozzles to optimize system performance.

Operational needs are important. Nozzles will therefore be selected that offer extended service life and minimize maintenance downtime. Compressed air is introduced tangentially into the spray chamber to swirl round at high velocity.

Primary atomization is achieved as the liquid passes through the swirling air. This stream then passes through a precisely engineered structure, comprising the orifice and pintle plate. The change in pressure and stream direction causes secondary atomization and creates the precise distribution pattern and droplet size required. Compared to pressure driven nozzles, Swirl Air nozzles achieve comparable levels of atomization at much lower pressures.

Wire feed units are rugged

ESAB has introduced two new portable ‘Off the Arc’ wire feeders, known as the MobileFeed 200 AVS and MobileFeed 300 AVS, for use with DC, CC or CV power sources.

These units are compact and rugged, with an integral carrying handle and a heat-resistant, flame-retardant and impact-resistant casing that protects the wire and feeding mechanism from dirt, grinding dust, moisture and other contaminants. Shock mounts ensure that the feeder is capable of surviving being dropped, even when fully loaded with a wire spool.

The feeders are therefore suitable for use in harsh environments such as construction sites, pipelines, shipyards, offshore and in mobile welding rigs, as well as for general fabrication applications where additional protection is desirable.

Designed for use with 200 mm or 300 mm wire spools, respectively, the two units operate with reverse polarity (wire DC+) or straight polarity (wire DC-) on wire diameters up to 1.6 mm. Automatic slow wire run-in, with controlled wire acceleration, helps to ensure smooth arc starts.

Metcar has the hots for self-lubricating flange

Metallized Carbon Corporation, a global leader in the manufacture of oil-free, self-lubricating materials, supplies standard, cast iron pillow blocks and flange blocks with self-lubricating, carbon-graphite bearing inserts for applications where oil/grease lubrication cannot be used.

These bearing assemblies provide low friction and long, maintenance-free, wear life in high temperature applications where oil/grease lubricants would melt, volatilize, or carbonize.

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Applications include hot air dampers and butterfly valves for power plant boilers. These bearings are also ideal for high temperature conveyors for drying, heat treating, baking, and annealing. They are also excellent for ash drag out conveyors, kiln car wheel bearings and stoker bearings.

Rugged cast iron housings are used to hold steel encased, carbon-graphite bushings. Two bolt pillow blocks are available for shaft sizes up to 3-1/2 inch diameter. Two bolt flange blocks are available for shafts up to 2-1/16 diameter. Four bolt flange blocks are available to shafts up to 5 inch diameter.

Three Metcar carbon-graphite grades are usually supplied: the Metcar Grade M-11, carbon-graphite, for light loads at temperatures up to 371 °C, the Metcar Grade 1515, copper impregnated carbon-graphite, for higher loads at temperatures up to 399 °C and the Metcar Grade 2500, high temperature electro-graphite, for temperatures up to 538 °C.

Desirable features include self-alignment to five degrees from centre-line, a replaceable bearing cartridge and two standard lengths to accommodate a normal load or high load.

These grades are also interchangeable with most standard ball bearing pillow blocks and flange blocks, and can be modified to carry thrust loads.

Marl LED is ‘fit and forget’ bayonet cap bulb replacement

A new Marl LED is an optical and electrical replacement for standard miniature Edison screw filament bulbs in control panels, but lasts 100 times longer and uses much less energy.

Based on a standard T3≤ bayonet cap, the new Marl 261 series is ideal for industrial control panels and annuniciator panels, offering a 100 000 hours service life, compared to 1000 hours for a typical filament bulb. For many applications the service life of the LED exceeds the service life of the panel, making the component effectively maintenance free.

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Marl 261 series LEDs feature full bridge rectification, and operate well from AC supplies as well as DC in either direction. The warm white version, when used with a coloured lens, offers a true optically matched replacement for a filament lamp. Marl is also offering a cool white alternative. Both colours are highly efficient, generating little or no heat.

Like many Marl LEDs, the new 261 series components are fully encapsulated for protection against shock and vibration. They draw just 10 mA typically from a 60 V AC/DC supply.

Ter-Mate launch larger through-bushing

Following the success of the ‘B4-30 Through Bushing’, and due to customer demand, Ter-Mate has now launched the bigger and equally versatile B4-50.

Through-bushings allow simple installation of cabling and ensure protection against contact with other internal parts. The new B4-50 is larger than the B4-30 and allows increased inter-connection and field connection for control panels and switchboards safely and efficiently.

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The unit allows simple integration into Forms 3 & 4 Segregation, ensuring all functional units in incoming and outgoing terminals are separated from the busbar system. It also conforms to the material requirements of BSEN 60439, the European technical standard for low voltage switchgear and control gear assemblies.

The B4-50 is manufactured from high quality, self-extinguishing thermoplastic. Its unique design makes it easy to install and provides the flexibility of housing four conductor sizes: 50 x 10 mm, 40 x 10 mm, 20 x 10 mm and 25 x5 mm.

An insulating boot is also available, which provides increased protection and meets the requirements of Form 4 Type 5. Manufactured from flame retardant PVC, it can be customized to suit the user’s connection requirements.

DuPont launches advanced solar PV cell metallization paste

DuPont Microcircuit Materials (MCM), part of DuPont Electronic Technologies, has announced the introduction of Solamet PV159 thick-film metallization paste for frontside photovoltaic (PV) solar cell metallization.

This new, advanced material has outperformed competitive metallization pastes in a wide range of processes, and in trials by customers around the world.

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Peter Brenner, Photovoltaics business manager, said: “DuPont Solamet metallization materials, developed by our world class research team, have set the PV industry standard for many years by enabling customers to reduce costs, increase efficiency and enhance the competitiveness of their products.

“With the introduction of Solamet PV159, DuPont has again raised the bar for frontside PV cell metallization, and we’re continuing to maximize performance improvements at each account,” he said.

Customers who have sampled Solamet PV159 have seen up to 0.5 per cent efficiency improvement on wafers with shallower emitters compared to standard wafers, with substantial improvements also shown on many other wafer/emitter types.

Solamet PV159 also has a more favourable environmental profile, as it is made without cadmium as an ingredient.

Due to these and other advantages, the newly developed chemistry in Solamet PV159 is being used as the basis for a range of materials characterized by varying degrees of chemical reactivity, enabling solar cell manufacturers to more exactly match the material to their specific process conditions.

DuPont Solamet PV159 is compatible with the most recently released Silver

Tabbing material, Solamet PV505, which has become the material of choice for many global manufacturers as a cost effective metallization paste that delivers high adhesion, low laydown and low contact resistance.

The US company said that the DuPont Solamet PV159 and PV505 metallization pastes are currently available for sampling.

High output accelerometer for vibration monitoring

Wilcoxon Research, a Meggitt Group company and a leading supplier of quality vibration sensors and sensor networks, has released a new high output accelerometer for machinery health monitoring.

The model 786-500 accelerometer has a high output and broadband frequency response for multi-use applications.

The 786-500 accelerometer is suited to condition monitoring and predictive maintenance of a variety of rotating equipment. Slow speed applications benefit from the strong 500 mV/g output of the 786-500 because it overcomes data collector noise that can mask indicators at low frequencies.

In high-speed applications, the 786-500 provides five times the sensitivity of general-purpose accelerometers for better detection of low-level vibrations.

The 786-500 is suitable for high speed and low frequency applications because of its superior broadband frequency response. The + 3dB frequency response of the accelerometer is from 0.2 Hz to 14 kHz. The sensitivity is 500 mV/g with a tight five per cent sensitivity tolerance.

The acceleration range is 10 g. The 786-500 accelerometer has an excellent broadband noise floor at 250 g.

The 786-500 high output accelerometer has a 500 mV/g sensitivity to minimize electronic noise and maximize voltage output to the monitoring instrument.

The ability to provide a stronger, cleaner signal is important to high-speed monitoring applications, such as turbocompressors and precision balanced high-speed machinery, in which detecting low amplitude vibrations is critical.

New portable grinding and injection test system for FGD now available

Sturtevant Incorporated, headquartered in Hanover, Massachusetts, USA, in collaboration with Bulk Conveyor Specialist Incorporated has announced the development of a portable grinding and injection test system for SO2 and SO3 mitigation for coal fired power companies.

The grinding unit (Simpactor) is used to pulverize sorbents such as Trona and Sodium Bicarbonate for SO2 and SO3 mitigation.

The manufacturer said that tests have shown that the Sturtevant Simpactor can grind these sorbents at high rates down to 15 microns enhancing SOx removal and reducing sorbent usage.

The injection system is used for introducing sorbents into the flue gas for evaluating mitigation levels.

The new portable trailer system allows a coal-fueled power company to inexpensively establish proper injection locations and sorbents, as well as determining the quantity of material required to minimize usage and maximize mitigation.

The new testing unit unit is portable requiring no permits, no foundation, and minimal space, yet is capable of continuous operation. Rental units are also available.

John Crane snags Siemens gas seal deal

John Crane, part of the global technology business Smiths Group, has announced a major new supplier frame agreement with Siemens AG that is expected to secure business worth some €10m ($14.4m) over the next two years.

With the potential for future extensions, the deal provides for John Crane gas seal equipment to be supplied via Siemens to a range of turbomachinery applications in the Middle East, Caspian, Asia Pacific and South American regions. It also includes the supply of aftermarket services.

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John Crane has underlined its commitment to the agreement by developing a new standard gas seal product designed to meet Siemens’ specific operating parameters, with the added benefit of service support from John Crane’s unparalleled international network of customer support centres.

Paul Cox, president, John Crane said: “Many end-users of Siemens’ equipment will already have benefitted from the excellent performance of John Crane seals and the support which the company provides, and this will help Siemens enhance its own reputation with these customers.”

The agreement will also allow John Crane and Siemens to collaborate more closely than previously, leading to the development of innovative new solutions to market requirements. Environmental considerations are expected to play a key role, especially in such areas as the current energy market demand for greater efficiency with lower emissions.

John Crane has also extended the scope of the offering it makes to Siemens to cover other areas of turbomachinery equipment, such as speciality engineered bearings.

High voltage insulator coating warms up the Philippines

As energy costs rise and environmental awareness grows, an alternative energy company is using a silicone-based coating from Dow Corning to help keep power flowing in the Philippines.

NorthWind Power Development Corporation uses Sylgard High Voltage Insulator Coating (HVIC) from Dow Corning in transmission line insulators to more effectively deliver its wind energy to more than 500 000 people. By switching to Sylgard HVIC, NorthWind significantly reduced downtime and maintenance costs associated with frequent flashovers, which increased cost effectiveness and customer satisfaction.

“After listening to NorthWind’s concerns and studying environmental conditions, we suggested coating the insulators with Sylgard HVIC to eliminate the flashovers and costs related to repair and maintenance,” said Kristen Scheibert-Mizell, Dow Corning’s Power and Utility market leader. “Our experts provided technical advice and training on the proper application of the coating, and recommended periodic inspections to ensure continued performance.”

Dow Corning recommended the product to NorthWind because of its hydrophobicity, reliability and ease of installation. Sylgard HVIC is an RTV (Room Temperature Vulcanizing) silicone elastomer that cures to an elastic rubber coating on the insulator surface.

Prior to using Sylgard HVIC, NorthWind was plagued by frequent flashovers in its transmission lines that disrupted service to customers and increased maintenance costs. Closer investigation revealed that porcelain insulators within the lines malfunctioned when exposed to automotive exhaust, pollutants from neighboring factories and the salty sea breeze.

“Forty per cent of the area’s electricity is generated from the NorthWind wind farm in Bangui Bay, making reliable energy distribution critical,” said Niels Jacobsen, NorthWind Power Development Corporation president and CEO. “We chose Sylgard HVIC from Dow Corning because of its proven performance over the past 25 years.”

Since Sylgard HVIC was installed in July 2006, transmission lines have operated without incident. The product should continue to perform for years to come without recoating, unlike other materials that require a new application every 18 to 36 months.

All change for Tentec’s turbine bolt tensioners

Tentec, the UK’s leading designer and manufacturer of bolt tightening equipment, is pleased to announce the appointment of Wind Turbine Tools Incorporated as its exclusive representative in North America.

Headed by Jim Daugherty, a well-known figure in the US wind turbine industry, the company has been supplying calibrated torque tools, power and hand tools, fasteners and tool sets to the wind turbine industry in both the USA and Canadian markets for over 16 years,

“Our product range ideally complements the skills and expertise at Wind Turbine Tools.” comments Roy Sheldon, sales manager for the wind turbine products at Tentec. “There is huge potential in the US for our newly-launched Aero range of bolt tensioning tools and we are delighted that Jim and his team have taken on the challenge to introduce these exciting new products into North America.”

The Tentec Aero range comprises bolt-tensioning tools suitable for a complete wind turbine bolting installation or maintenance programme on many different types and models of wind turbines. The products are manufactured from aircraft quality high-strength tensile steel and are compact and lightweight for ease of handling.