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50 Maritime Reporter & Engineering News ? January 2013 NEWSPRODUCTSWaste Heat Recovery Shipowners are faced with record and rising fuel costs and ever stricter emission regula-tions which deeply impact the bottom line. Increasingly, new technologies are sought to help on both ends. The new Aalborg XS- TC7A waste heat recovery (WHR) economiz- er from Alfa Laval is designed for use after a ship?s auxiliary engines, an innovative waste heat recovery system promises fuel and emis-sions savings.Reportedly capable of completely supplying or supporting ship steam requirements during ma-neuvering and port stays, the Aalborg XS-TC7A waste heat recovery economizer turns waste heat from a ship?s auxil- iary engines into usable energy and cuts carbon emissions.With its small footprint and low weight to output ratio, the Alfa Laval Aal- borg XS-TC7A promises to reduce fuel costs for oil-Þ red auxiliary boil- ers. After two years of testing at sea, a major Danish shipping company is among the Þ rst to capitalize on the full potential of using waste heat recovery economizers both after the main engines and auxiliary engines on its ß eet. For starters, the company signed a con- tract in January 2012 to install the Alfa Laval Aalborg XS-TC7A on 20 newbuildings and a larger number of retro Þ ts over the coming years. www.alfalaval.com/marine Dometic Condensing Unit Heating, Ventilation and Air Condition- ing (HVAC) special- ist Dometic Marine launched its new DuraSea Condensing Unit to the U.S. mar- ket. Designed to pro-vide a robust and re-liable system for the workboat environment, Dometic?s new DuraSea air conditioning con- densing unit operates with the vessel?s exist- ing evaporating unit to provide effective cool- ing of multiple on-board spaces including the pilothouse and crew accommodation areas. The unit?s BTU capacity ranges from 36,000 ? 120,000 to satisfy an extensive range of ves-sel requirements for cooling. Built with cabi-net of stainless-steel 304 to resist heavy salt spray and UV damage, the DuraSea Condens- ing Unit is suitable for deck or rooftop mount. It employs a unique, vertical fan design which prevents water puddling on the fan blades. www.dometic.com PCS BHBThe PCS BHB is the ultimate machine, with options ranging from High Speed Drilling, Tapping, Boring, Countersinking, Gas cutting, Plasma cutting, Plasma & Gas Beveling, Pipe Cutting, Ink Jet Printing, Pin Marking or any combination, all with precision motion con-trol. Machine displayed conÞ guration: 60HP BT50 drill, Automatic 24 Tool Changer, PCS Plasma Bevel with Lincoln Kaliburn Spirit 400a plasma system, PCS Triple Torch Ro- tary PEP Gas Bevel, Extra Gas torch, Lincoln Burny XL CNC, SICK Laser Safety Scanners, Through Spindle coolant or Oil Mist cooling. Easy to use Lincoln Burny XL CNC Control- ler with PCS custom programs. 50mm Hole in 50mm Steel Plate drilled at high speed using Oil Mist Cooling. jz@pcsusa.pro Bending, Measuring and Bending (again)The Springmatic optical measuring system provides a remedy to inaccuracies and time delays in accurately bending steel or stain-less steel tubes and tube systems. The new development from Schwarze-Robitec, which is integrated into the bending tool, measures the bent tubes directly while tensioned on the bending machine and immediately starts the required further bending process if desired or saves the required correction value for sub-sequent bends. Instead of removing the tube after the bending process, checking it on an external measuring system then retensioning it for subsequent bending, tube processing companies can bend, measure and adjust in a single stage with the aid of Springmatic. Im-mediately after the bending of a tube, the new optical measuring system that Schwarze-Ro-bitec is integrating into its bending tools re-cords the rebound value, from which the CNC control of the tube bending machine calcu-lates the required subsequent bending angle. www.schwarze-robitec.com RL-K 7500 Subsea Crane During customer days at the production plant in Rostock in Janu-ary 2013 Liebherr will present its new subsea crane, type RL-K 7500. With this new knuckle boom crane the company extends its range of offshore cranes for subsea operations. The RL-K 7500 is able to lift up to 260t in the air and handle loads down to a water depth of 3,400m. The maximum rope diameter is 100mm, the maximum overturning moment of the crane is 75,000kNm. Depending on customers? speci Þ -cations, the boom conÞ guration allows for working radii of up to 50 m. One advantage of the crane?s knuckle boom is that loads can be lowered to the water surface with a short rope length between crane boom head and water line. Based on sophisticated Motion Reference Units (MRUs) the Active Heave Compensation system compensates this movement. In order to meet the high power demands of the AHC, the hydraulic hybrid drive system Pactronic, originally developed for Liebherr mobile harbor cranes, was specially adapted for subsea ap-plications. Pactronic is characterized by an additional energy storage device. A hydraulic accumulator supplements the ß uid pump in de- livering power to the system. It serves as a pressure storage reservoir incorporating a gas in conjunction with a hydraulic ß uid. Energy is stored in this compressed gas to be released upon demand. The AHC system is fully integrated in the Litronic system. One of its most im-portant features is its self-learning function. It automatically recog-nizes the vessel?s motion and adjusts itself according to this informa- tion. Hence, the system does not need to be manually adjusted and is independent of weather conditions. Up to 70% of the power required to operate the AHC system is currently obtained from Pactronic. This means that the hybrid drive system provides a maximum power of almost 4 MW. Winch Technology In order to ensure optimized rope guidance, the crane has a patented horizontal winch shifting system that guarantees the ideal ß eet angle of the rope under all load conditions in both hoisting and lowering operations. A further innovation is the vertical winch frame lifting system, which is also patented. Two hydraulic cylinders allow for the adjustment of the lifting height without moving the drum of the hoisting winch. Due to this design, wear of the main wire rope is minimized, intended to ex-tend its service life and reduce life cycle costs. With the RL-K 7500 Li- ebherr offers an innovative crane concept for subsea applications. The RL-K 7500 can be rated both as general purpose offshore crane and as heavy lift crane, being able to hoist loads weighing up to 300 t. It can thus be installed on board drill vessels and also heavy lift vessels.Tobias.Fröhlich@Liebherr.com MR #1 (42-50).indd 50MR #1 (42-50).indd 501/4/2013 9:08:40 AM1/4/2013 9:08:40 AM
