Wärtsilä unveils new LNG solution
Wärtsilä has upgraded its fully integrated fuel gas handling system, LNGPac, and made improvements to its Gas Valve Unit (GVU) as the use of LNG as a marine fuel becomes increasingly popular.
Wärtsilä introduced the LNGPac in 2010. It comprises a complete system for LNG fuel handling and is now more compact and technically advanced. The company says it’s also improved safety and reliability, while the capital and operating costs will be reduced.
The new system has fewer moving parts, and therefore less maintenance is required. The compact design and advanced integration of components is also said to make installation at the shipyard faster and easier.
The heating media skid, used to evaporate LNG for pressurising the storage tank and to provide the engine with the correct gas temperature, has now been removed, as have the pumps. Looking beyond the fuel gas system, Wärtsilä says it’s integrated multiple interfaces within the LNGPac. It directly uses the engine’s cooling water, which results in fewer interfaces and less installation work for the shipyard. By eliminating electrical consumers, Wärtsilä says the vessel is even more environmentally friendly.
A similar change has been made to Wärtsilä’s Cold Recovery solution, which enables the cold energy of the LNG to be used by the ship’s HVAC-system. In the new system, Wärtsilä directly connects the ship’s HVAC to the tank connection space, therefore removing a complete circuit consisting of heat exchangers, valves and pumps.
The Wärtsilä GUV, a module located between the LNG storage system and the Dual-Fuel engine, is used to regulate the gas pressure and ensure a safe disconnect of the gas system should that be necessary. The GUV and LNGPac are now combined, saving considerable space and providing a simple ‘plug and play’ solution.
Wärtsilä’s upgraded LNGPac system will be officially launched during the ONS 2014 conference and exhibition being held in Norway from 25 to 28 August on stand K115. It will also be on show at SMM 2014 being held in Hamburg from 9 to 12 September, stand 305, Hall A4.
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