Wärtsilä Upgrades LNG Bunker System

Tuesday August 26, 2014

Wärtsilä Corp. (Wärtsilä) says it has launched new upgraded versions of its liquefied natural gas (LNG) handling system and gas valve unit (GVU).

The new version of the Wärtsilä LNGPac, a system first introduced in 2010, is more reliable and compact, removing a heating media skid and pumps that were included in the original.

The new system uses the engine's cooling water, eliminating the use of electricity, while the Wärtsilä's Cold Recovery solution allows the LNG's cold energy to be used by the ship's HVAC system.

The company has also combined the LNGPac with its gas valve unit (GVU), which regulated gas pressure between the LNG storage system and the dual-fuel engine, creating a simpler integrated system.

In addition, the fuel gas system now includes an integrated airlock and control cabinet, a more compact bunker station, and maximized LNG storage volume.

Wärtsilä said more than 20 LNGPac systems are already in operation or under construction.

Among the vessels using the systems are Harvey Gulf's new fleet of LNG-fuelled platform supply vessels (PSVs).