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In case of engine failure, the failed engine can be de-coupled allowing the ship to maintain a speed of 14 knots. [13] LNG is stored at around -162°C. [14] Q-Max vessels are equipped with an on-board re-liquefaction system to handle the boil-off gas, liquefy it and return the LNG to the cargo tanks. [15]
Mozah is a Q-Max LNG carrier operated by Qatargas II. The vessel was built in 2008 by Samsung Heavy Industries and is tied with her sister ships for the largest LNG carrier in the world. [1] The vessel is part of a contract for 14 same-size ships with maximum particulars to berth at Ras Laffan terminal in Qatar.
Q-Flex vessels are propelled by two slow speed diesel engines, which are claimed to be more efficient and environmentally friendly than traditional steam turbines. [1] [2] Q-Flex carriers are equipped with an on-board re-liquefaction system to handle the boil-off gas, liquefy it and return the LNG to the cargo tanks. [3]
LNG carriers of increasing size have been built since then, leading to the fleet of today, where giant Q-Max LNG ships sail worldwide that can each carry up to 266,000 m 3 (9,400,000 cu ft). A boom in U.S. natural gas production was enabled by hydraulic fracturing ("fracking"), creating large growth in natural gas production from 2010. [2]
A marine LNG engine is a dual fuel engine that uses natural gas and bunker fuel to convert chemical energy in to mechanical energy. Due to natural gas' cleaner burning properties, the use of natural gas in merchant ship propulsion plants is becoming an option for companies in order to comply with IMO and MARPOL environmental regulations.
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WASHINGTON (Reuters) -The Federal Aviation Administration plans to convene a review board in the coming weeks to consider safety concerns about engines on Boeing 737 MAX airplanes after two bird ...
The heating value depends on the source of gas that is used and the process that is used to liquefy the gas. The range of heating value can span ±10 to 15 percent. A typical value of the higher heating value of LNG is approximately 50 MJ/kg or 21,500 BTU/lb. [2] A typical value of the lower heating value of LNG is 45 MJ/kg or 19,350 BTU/lb.