Power & Energy Solutions

The premier renewable energy publication

Husum, 25 November 2008 - "In agreement with other trade fair organisers, Messe Husum has decided to postpone the 12th Husum WindEnergy, which was scheduled to be held from 7 to 11 September 2010, by two weeks". Therefore, the internationally leading trade fair of the wind energy industry will take place from 21 to 25 September 2010. {pagebreak}The Managing Director of Messe Husum, Hanno Fecke, disclosed during a meeting of the advisory council that the HUSUM WindEnergy (HWE) took this decision because otherwise the HWE dates would have clashed with those of the international leading trade fair SMM, which is organised by our partner Hamburg Messe & Congress GmbH and which "is also considered an important business platform by major exhibitors of the HWE"."We took this decision also in agreement with the persons responsible for the power expo in Zaragoza, in order to avoid date clashes with this important trade fair for Renewable Energies". According to Fecke, this was successful.For enquiries please contact:Klaus LorenzPress officer HUSUM WindEnergyT: +49 (0) 2182-5 78 78-0E-mail: lorenz@husumwindenergy.comGudrun Blickle, T: +49 (0)40-3569-2442, E-mail: gudrun.blickle@hamburg-messe.de 

Read More

Calculation notes on using Hydraulic bolt tensioning tools.Formula to use:Residual Bolt Load = Bolt Stress x Bolt Tensile Stress AreaUnits:Residual Bolt Load = (N or Tons)Bolt Tensile Stress Area = (mm2 or In2){pagebreak}Below are tables of standard ISO Metric and Imperial Thread forms along with applicable tensile stress area's.Step1: Determining required bolt load from a known bolt stress.Caution:Using these Tensile Stress Area values is only applicable for fully threaded studs, if the stud in question is wasted or reduced in diameter, the Tensile Stress Area will need to be calculated using the smallest stressed diameter on the bolt.Formula to use:Bolt Tensile Stress Area = pi/4 x (d2)UnitsBolt Tensile Stress Area = (mm2 or In2)d = Smallest Stressed Diameter on bolt = (mm or In)Design Check:It is always good practise to determine the % of bolt yield you are applying, if the final bolt stress exceeds 75% of the bolt yield strength, then it may be neccasary to consider the fatigue characteristics of the bolt and joint.NEVER EXCEED 95% OF THE BOLT YIELD STRENGHFormula to use:% of Yield = (Bolt Stress Required / Yield Strength of bolt ) x 100Units:Bolt Stress Required =(N/mm2 or Ton/In2)Yield Strength of Bolt =(N/mm2 or Ton/In2)(Download

Read More

The Danish based sub-supplier to the wind turbine industry, Avanti Wind Systems, opens office in India.It will be operated by general manager for Avanti Wind Systems India, Mr. Lars Rasmussen and based at the Trade Commission of Denmark in Bangalore{pagebreak}At the beginning of 2009, Avanti Wind Systems expands operations to Chennai, where the company will open a factory for Service Lifts and Fall Protecting Systems. Avanti Wind System is leading world marked producer of service lifts and other personal safety systems to wind turbine towers. Including the office and factory in India, Avanti Wind Systems will operate factories, technical service centers, offices and training centers in six countries, Denmark, Spain, China, USA and Germany."The wind industry is growing very fast in India too - and Avanti Wind System wants to be close to our costumers, so we are able to provide a fast and high quality service", says Avanti Wind Systems CEO, Soren Midtgaard.The Avanti Company was founded in Denmark in 1885 and was originally a ladder factory. The company still produces ladders, but is now focusing on developing and producing safety equipment for the service technicians working in wind turbine towers. Avanti has

Read More

Phoenix Solar AG Introduces SolyndraTM Solar Panels to the European Market• The new shape of solar electricity• Innovative thin-film module for flat rooftops{pagebreak}Sulzemoos 07/10/2008 / One of the solar industry's best kept secrets has been unveiled. Photovoltaic solar system manufacturer Solyndra, Inc., headquartered in Fremont, California U.S.A., today announced its unique CIGS-based thin film solar panel system. In July of this year, Phoenix Solar AG announced that it had signed a framework agreement with Solyndra worth around EUR 450 million. From 2009 onwards, Phoenix Solar is able to offer its customers this state-of-the-art solar system, specially developed for flat rooftops and thus ideal for industrial and commercial buildings.The Solyndra panel is uniquely differentiated compared to conventional flat solar panels: It is made of 40 cylindrical tubes which are attached to a 108 cm x 182 cm frame and is reminiscent of a solar thermal vacuum collector. Within the cylindrical modules, over 140 interconnected cylindrical CIGS cells capture direct sunlight, diffuse sunlight, and sunlight reflected from the rooftop, thus enabling maximum use of light and greater effectiveness.Simple 25 cm high mounts, provided by Solyndra, hold panels horizontally. Spacing between modules allows wind to flow through the panels freely, so the system

Read More

New Foundation Bolt Tensioning Tools Added to Tentec Aero Range Tentec, a leading UK designer and manufacturer of bolt tightening equipment has been working closely with major manufacturers and suppliers of wind turbines looking at the problems associated with anchoring bolts into the foundation structure. {pagebreak}Due to the unusual length of foundation bolts and the anchoring methods used, relatively large amounts of bolt extension are seen. It is important, therefore, that bolt tensioning tools have plenty of piston/ram extension capacity. With this in mind, the new Aero Model WTF offer a 25mm piston/ram capability for "one pull" uninterrupted tensioning. Another important design feature of these new tools is that they can be supplied to suit many different thread forms such as Williams and Dyson threaded bars and the more conventionally ISO metric and Imperial Unified Thread forms. Versatility is also key in the design of the Model WTF. As the amount of thread protruding can vary significantly from turbine to turbine, the tensioning tool has been designed to work in two different ways. When there is long stud protrusion from the foundation hexagon nut, a

Read More

Trina Solar Limited (NYSE: TSL; ''Trina Solar'' or the ''Company''), a leading integrated manufacturer of solar photovoltaic (PV) products from the production of ingots, wafers and cells to the assembly of PV modules, founded in 1997, today announced the inauguration of a 26 MW PV plant, consisting of an installation which uses primarily PV modules manufactured by Trina Solar, in Fuente Alamo, Murcia, in the south-east of Spain on August 7th, 2008. The project has been carried out by Gestamp Asetym Solar SA, a Spanish provider of solar system solutions.{pagebreak}Trina Solar supplied 20 MW of mono and multicrystalline solar modules of the total 26 MW required for this key project as part of the long-term arrangement between both companies. This PV plant consists of three phases: Fuente Alamo I, of 8MW; Fuente Alamo II, of 8MW; and Fuente Alamo III, of 10 MW, which are installed on a total of 62 sq ha of rural land."We are very pleased to have supplied 20 MW of high-quality modules for this large PV plant that Gestamp Asetym installed in the south of Spain, representing one of the largest PV plants so far in Europe," remarked Arturo Herrero, Trina Solar's Vice President of

Read More

Trina Solar Limited, a leading integrated manufacturer of solar photovoltaic products from the production of ingots, wafers and cells to the assembly of PV modules, founded in 1997, announced today that shipments began this month to provide more than 13,400 solar PV modules to power the Atlantic City Convention Center ("ACCC") in New Jersey, United States. This supply comes as part of a signed agreement with general contractor American Capital Energy, who is managing project integration and installation for Pepco Energy Services and the Atlantic City Convention & Visitors Authority ("ACCVA"). The agreement provides for up to four additional megawatts ("MW") to be supplied during 2009.{pagebreak}Once complete, the ACCC project will be North America's largest single roof-mounted solar array, with approximately 17200 square meters of solar panels for a system size of approximately 2.4 MW. The system is expected to generate over 2.8 million kilowatt-hours of energy per year, or enough to power 280 US homes. The system is being developed under a 20-year Power Purchase Agreement with Pepco Energy Services, a subsidiary of Pepco Holdings, Inc., and will provide the ACCC with energy savings of $4.4 million over 20 years."We are very pleased that Trina Solar modules were chosen

Read More

Maximum reliability – Cognis presents solutions to boost wind turbine efficiency at Husumwind 2008Today’s wind turbines have to withstand extreme mechanical stresses under very demanding conditions, especially with the latest trend of offshore locations, where wind speeds are much greater and maintenance work is even more challenging. At this year’s Husumwind trade show, {pagebreak}Cognis Functional Products featured solutions that help wind farm operators extend the service life and increase the efficiency of their equipment with environmentally sound products. On the display were Breox SL 320 gear oil and ProEco HE 801 series biohydraulic fluids.  Since gearboxes are both among the most stressed and most expensive components, their durability and reliability are especially important. A key factor here is the quality of lubricants – Breox SL 320 is a polyalkylene glycol-based gear oil which offers the specific performance properties required for use in wind turbines, and is ecologically sound. Thanks to its outstanding micro-pitting resistance, bearing wear protection, shear stability, viscosity stability in the presence of water, persistent foam resistance, and clean operation, Breox SL 320 helps improve reliability and extend drain intervals, thereby significantly enhancing the overall profitability of the wind turbine.The ProEco HE 801 series is a range

Read More

Trina Solar to participate as a speaker at the International Congress on Energy Efficiency and Renewable Energy Sources in BulgariaBarcelona, 31st March 2008The international manufacturer of solar modules Trina Solar will be participating as a speaker on the fourth edition of the Energy Efficiency and Renewable Energy Sources conference which will be held from 7th to 10th April in Sofia, Bulgaria.{pagebreak}Mr. Arturo Herrero, Vice-President of Sales & Marketing of Trina Solar, will be doing a speech on the competitive advantages that an integrated business model offers in the PV sector. This kind of business model means that the company manufactures in its own facilities the whole production chain from the ingots, to the wafers, cells and modules.Participating in this congress is an important opportunity for Trina Solar, since it will allow the company to establish some first contacts in this emerging market and to continue extending its presence in Europe, where the company already counts with positive brand recognition.For further information on this congress, please check the event's website: http://www.viaexpo.com/congress-ee-vei/eng/congress.php

Read More