Power & Energy Solutions

The premier renewable energy publication

One of the continent’s foremost stevedore and marine terminal operators, Gulfstream Marine is making a name for itself in the specialised field of wind turbine transportation. caught up with company founderPES: Welcome to PES magazine. Firstly, can you give us a basic overview of Gulf Stream Marine (GSM) as a company and how it operates with regards to the wind energy industry in the US?{pagebreak}Jan Rietdijk: GSM first came across wind turbines in the late 90s when some of the general cargo liner services from Europe that we handled started bringing them into the Port of Houston for ultimate delivery into the Mid-West and California. At that time we were totally unprepared for the movement of these blades and tower sections, but because of the relatively small numbers involved that was not of great concern.The handling of wind turbine components requires a custom approach involving specialized equipment and unique skill sets. Due to their size and being relatively fragile, it takes expertise and commitment to safely handle these individual components to ensure that no damage is done.If any of this equipment at that time had to be moved further into the terminals (because of a lack of space shipside) we

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Transiting the Northeast-Passage, applying a towing kite system, utilising the shark skin effect – three different topics, one common interface: Beluga Shipping GmbH, the project and heavy lift carrier known for great innovative spirit and the philosophy to go off the beaten tracks of commercial shipping.  {pagebreak}Three Beluga vessels are the first to commercially sail along the Northern Sea Route in the summer of 2009 cutting down the voyage distance between Asia and Europe. MV ‘Beluga SkySails has crossed the oceans since January 2008 and by using an auxiliary wind propulsion system, saves up to 20 per cent of bunker consumption. Making shipping more efficient also is the goal of the Hai-Tech-project (Hai’ being German for shark), which aims to develop a low-cost system solution based on a reliable process for coating hulls with a shark-skin-like structure.  Beluga Shipping GmbH was founded back in 1995 by President & CEO Niels Stolberg in Bremen (Germany). The transportation specialist has soon established in a solid niche and now is the world market leader in the project and heavy lift segment (source: Institute for Shipping Economics and Logistics).  By way of a modern fleet of currently 66 multipurpose heavy lift project

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Finnish heavy haulage and project forwarding company Silvasti Ltd. specialises in wind turbine projects in Finland, Sweden and the Baltic countries. The company provides total logistics solutions for the most challenging installations, and in 2008, received a major contract to deliver 13 x 3 MW wind turbines to Aulepa Wind Park, on the west coast of Estonia.{pagebreak}Here, Director Matias Setälä talks us through the operation. The blades were manufactured in Poland, the rest of the cargo in Finland. Each turbine included: Nacelle 14 x 4,4 x 4,7 (l x w x h [m]),  127 tonsHub 4,7 x 4,7 x 4,05 / 27 tonsTower section 1. 21 x 4,2 x 4,2 / 50 tons Tower section 2. 28,34 x 3,725 x 3,725 / 50 tonsFoundation block 4,2 x 4,2 x 1,2 / 9 tonsThree blades, each 49,5 x 4 x 2,7 / 12,2 tons Transport from Finland – nacelle, towers, hub and foundation blockThe first step of the project was to carry out careful road studies and site surveys in order to find out the optimal transport routes. Silvasti had the idea to find a transport route that would accommodate a six metre high load. This would make it possible to transport the

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The global energy marketplace remains increasingly competitive and customers are striving hard to increase their productivity. Considering this pressure, they are continuing to seek out innovative means to reduce energy consumption as one method to remain competitive.{pagebreak}To satisfy this demand Mobil Industrial Lubricants is clearly identifying those lubricants of its portfolio that demonstrate measurable energy efficiency benefits. Take Mobil SHC 524 for example, our high performance synthetic hydraulic oil for critical wind turbine applications such as the pitch control of rotor blades.   Increased hydraulic efficiency means greater productivityThe additive and base oil selection of a lubricant can have a significant impact on its traction coefficient. Mobil SHC 500 series has a significantly lower traction coefficient compared to a mineral oil based product which translates to lower internal fluid friction and can mean less energy consumption.         caption: Mobil SHC 524 has a significantly lower traction coefficient and maintains better oil film protection under high pressure and temperature 

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Intellifast GmbH is a leading name in the ultrasonic load measurement business, launching on to the market in 1997 with a focus on the world biggest bolt consumers – the car industry. Here, Managing Director Frank Scheuch talks to PES about the company, its expansion into the wind industry, and his vision for its future.Intellifast was founded as PFW Technologies in 2002.{pagebreak} The company changed its name to Intellifast when it acquired the Intelligent Fastener trademark in 2006 and when its sister company, PFW GmbH changed its name to PFW Aerospace AG. The business was started with the acquisition of an ultrasonic load measurement technology, invented in 1993 and launching into the market in 1997 with a focus on the world biggest bolt consumers - the automobile industry. the central technology is a thin film permanently mounted transducer. Using high- vacuum technology, the thin film transducer is deposited on to the bolt. The materials used are immune to the elements and are inert to their environment. To read the bolt load, the transducers are connected to an ultrasonic measurement device. The measurement of the clamp load is accurate to +/- 3 %. The patented digifast barcode technology provides ultrasonic fastener information on each

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TradeWind – the European project funded under the EU’s Intelligent Energy-Europe programme – has recently published an essential 100-page paper on the state of the European wind power industry. In this exclusive extract from the comprehensive, hard-hitting report, PES picks out all the important and salient issues facing us all as we move into an uncertain future.{pagebreak}Nevertheless, the good news is that the report concludes that the recent rapid growth in wind power generation – triggered by technological and industrial development and the move towards sustainable economics – indicates that wind power should be seen as one of the main domestic sources for electricity generation within the European Union.  IntroductionEurope’s dependency on imported fossil fuel has become a threat to economic stability, increasing uncertainties over energy prices. At the same time, the European electricity industry is facing a huge challenge related to generation capacity investment needed in the coming years. The surplus capacity that existed in some countries prior to liberalisation is diminishing and many existing power plants are getting closer to decommissioning. For these reasons, one of the key points on the European energy policy agenda is to increase the share of demand covered from renewable energy sources. European

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pes presents half a dozen lessons, which if heeded in future offshore projects, together with the other parts of the offshore wind ecosystem, we can make for smoother, quicker, and cheaper installations and ultimately, better windfarms for the production of clean energy.{pagebreak}Over the years we have all heard much about the potential of offshore wind as an energy source. Now, in 2009, the industry has finally reached a position to begin realising much of that potential. The projections for offshore wind are staggering: currently there are plans for almost 40GW of offshore wind energy in the UK, and as is well known, Denmark and the UK currently lead the world in installed offshore capacity.  In Germany, where the first offshore windfarm is expected to be powering German homes and communities by the end of this year, the expectation is that by 2030, 15% of German electricity consumption will come from offshore wind. Around the North Sea, many countries have set similar targets for themselves; the European Wind Energy Association has a projected target of 40GW offshore by 2020. These are huge, challenging goals that recognise the potential of offshore wind as a key part of any attempt to move away

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The Times of London has just published its first green global rich list, with many tycoons and executives from the wind industry making the top 100, including the USA’s Warren Buffett who tops the poll at number one, being worth a cool Euro 37bn. Here, PES presents your handy guide to the top 10 movers and shakers in the wind power industry.{pagebreak}The list shows the true degree of enthusiasm among the world’s wealthy for investments in areas like electric cars, solar power, geothermal and wind power. It was restricted to 100 businessmen and women or families whose accumulated wealth amounted to £200m or more and who had made either serious investments in green technology and businesses or a substantial financial commitment to environmental causes. What the newspaper’s impressive list demonstrates definitively is the fact that many of the world’s richest and most powerful entrepreneurs are now embracing environmentalism in a fulsome, wholehearted manner, which could only have been dreamed of a decade ago. To put all this into some perspective, Warren Buffett (worth Euro 37bn) is now regularly swapping places with the rather more high-profile Bill Gates (worth Euro 30bn) at the top of Forbes magazine’s annual list of world

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During the past decade it has become extremely important to optimise all aspects of product design. Competition is tougher than ever and steel costs have skyrocketed. For economic reasons each component must be utilised to its maximum capacity. Bolted joints became the centre of attention after recent findings that they are often used to as little as 30 per cent of their capacity.{pagebreak} Moreover, a failed critical bolted joint could lead to expensive warranty claims or maintenance costs. Control of the clamp load in a bolted joint is vital. However, when faced with a problem joint, it is not surprising that the design engineer will not have an answer if asked about the clamp load. Torque calculations must always be based on the existing conditions that often are very vague. Unless all parameters are correct, the calculation will be unreliable. Examples of parameters are:            Thread condition of the fastenersHardness of contact surfaceMaterial (steel, aluminium, copper, etc.)Extra friction from a locking fastenerExtra friction from an adhesiveLubricant on the threadType

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Considerable wind resources place many countries across the region in an enviable position. Yet capitalising on those resources can prove problematic, due to local planning restrictions. This case study from the UK highlights the problems faced and offers a number of solutions that will resonate with wind energy suppliers throughout Europe.{pagebreak}The UK has enviable wind resources and the potential to become the green powerhouse of Europe, yet lags behind many of its neighbours in its use and development of renewable energy from wind projects. Ambitious targets have been set by the UK Government, which equate to 30% of electricity from renewable energy resources by 2020. Currently however, less than five percent  of electricity comes from renewables, highlighting the major challenges ahead to meet these targets in the next ten years. A number of issues surround the UK’s delay in exploiting its wind energy resources. However, the complex planning systems which are in place have been identified by both the Government and developers as the major obstacle to progress.There are many examples of the planning system failing the renewable, and traditional, energy industry in the UK. The Ray Wind Farm proposal in Northumberland, for example, was the subject of application to

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