Hitachi Zosen adopts MHI gas supply system

04 Sep 2015
The pressurising unit of the high-pressure gas supply system under tests at a Mitsubishi Heavy Industries facility (photo: MHI)

The pressurising unit of the high-pressure gas supply system under tests at a Mitsubishi Heavy Industries facility (photo: MHI)

Engine builder Hitachi Zosen is to fit its LNG-fuelled engines with a high-pressure gas supply system ordered from Mitsubishi Heavy Industries (MHI).

The system, which pressurises and delivers LNG through a hydraulic liquid pump, will be delivered to Hitachi Zosen's Ariake Works in the second half of 2016. After factory testing it will be installed on the company’s marine engines.

MHI previously supplied a similar system to Mitsui Engineering & Shipbuilding Co. The latest system enables higher gas pressure supply to the engines to enhance performance, MHI reported.

The gas supply system has four main components: A compressor unit that pressurises and heats the LNG to produce compressed natural gas; a hydraulic unit that serves as the power source; a CNG bottle unit to buffer fluctuations in pressure; and a gas combustion unit that safely disposes of low-pressure off-gas and uses the waste heat as a heat source.

MHI said that the hydraulic pump system eliminates the need for a speed reduction mechanism, facilitates variable speed adjustment, and also enables installation in ships where space is limited. The system is also said to feature a compact configuration and low power consumption.

“MHI will focus on the marketing of the high-pressure gas supply system, targeting the further expansion of its businesses in shipbuilding and marine engineering,” the company said.

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Mitsubishi Heavy Industries Marine Machinery & Engine Co

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