Technology firm Wärtsilä Tuesday celebrated the 100th order of its fuel gas supply system, also known as LNGPac, with the latest order from Singapore based AET Tankers to install LNGPac systems in its two new shuttle tankers using Wärtsilä 34DF dual-fuel auxiliary engines running primarily on liquefied natural gas (LNG) fuel.
The Wärtsilä LNGPac was first introduced in 2009 and has played an important role in establishing the viability of LNG as a marine fuel.
The system comprises a bunkering station, the LNG fuel tank and related process equipment, as well as the control and monitoring system. The LNGPac fuel system can be offered as a standalone product, or as part of a complete propulsion system.
“A major reason for the global acceptance of LNG fuel for shipping is that Wärtsilä realised at an early stage that more than just a dual-fuel engine and a stand-alone LNG system was needed,” says Mathias Jansson, General Manager, Fuel Gas Supply Systems, Wärtsilä Marine Solutions.
“LNG fuelled ships require a complete fuel handling system, and the innovative LNGPac system very successfully meets this requirement.”
According to Wärtsilä, the first LNGPac installation was for the chemical tanker Bit Viking owned by Swedish operator Tarbit. The vessel was converted for LNG fuel operation in 2011, and its success paved the way for the rapid acceptance of the Wärtsilä solution.
Since the original introduction of the LNGPac, Wärtsilä has continued to develop the system. The company has, for example, pioneered the utilisation of the cold energy stored in LNG by using it to cool the onboard HVAC and galley system.
Another achievement has been the development of a compact LNGPac with an integrated gas valve unit (GVU) and airlock. The inline tank connection space for single shell tanks has been developed, as has been a dedicated LNG fuel pump based on the well-proven deepwell pump technology.
Today the LNGPac is installed on some 12 or more different types of vessel, including passenger ferries, tugs, dredgers and offshore vessels.
Photo credit: Wärtsilä
Published: 23 May, 2018
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