User:TVaske/Marine propulsion

Hydrogen Fuel

While currently not commonly used in the maritime industry, hydrogen as a fossil fuel alternative is an area with heavy investment. As of 2018 the shipping company Maersk has pledged to be carbon free by 2050, a goal they plan to achieve partly by investing in hydrogen fuel technology^[1]. While hydrogen is a promising fuel, it has a few disadvantages. Hydrogen is far more flammable than other fuels such as diesel, so precautions must be taken. It is also not very energy dense, so it has to be heavily compressed to increase its energy density enough for it to be practical, similar to methane and LNG^[1]. Hydrogen can have its power extracted either by use of a fuel cell system or it can be burned in an internal combustion engine, similar to the diesel engines presently used in the maritime industry^[2].

New Photo for sail propulsion

The propeller then moves the vessel by creating thrust. When the propeller rotates the pressure in front of the propeller is greater the pressure behind the propeller. The force from the pressure change propels the propeller forward.^[3]

Needed citation for turbo-electric ^[4]

^ ^a ^b Alan Reinsch, William (April 13th 2021). "Hydrogen: The Key to Decarbonizing the Global Shipping Industry?". Center for Strategic and International Studies. Retrieved 5/4/2022. {{cite web}}: Check date values in: |access-date= and |date= (help)
^ Fernández-Ríos, Ana; Santos, Germán; Pinedo, Javier; Santos, Esther; Ruiz-Salmón, Israel; Laso, Jara; Lyne, Amanda; Ortiz, Alfredo; Ortiz, Inmaculada; Irabien, Ángel; Aldaco, Rubén (2022-05-10). "Environmental sustainability of alternative marine propulsion technologies powered by hydrogen - a life cycle assessment approach". Science of The Total Environment. 820: 153189. doi:10.1016/j.scitotenv.2022.153189. ISSN 0048-9697.
^ "Propeller Thrust".
^ Czarnecki, Joseph. "Turboelectric Drive in American Capital Ships".{{cite web}}: CS1 maint: url-status (link)

[:0-1] Alan Reinsch, William (April 13th 2021). "Hydrogen: The Key to Decarbonizing the Global Shipping Industry?". Center for Strategic and International Studies. Retrieved 5/4/2022. {{cite web}}: Check date values in: |access-date= and |date= (help)

[2] Fernández-Ríos, Ana; Santos, Germán; Pinedo, Javier; Santos, Esther; Ruiz-Salmón, Israel; Laso, Jara; Lyne, Amanda; Ortiz, Alfredo; Ortiz, Inmaculada; Irabien, Ángel; Aldaco, Rubén (2022-05-10). "Environmental sustainability of alternative marine propulsion technologies powered by hydrogen - a life cycle assessment approach". Science of The Total Environment. 820: 153189. doi:10.1016/j.scitotenv.2022.153189. ISSN 0048-9697.

[3] "Propeller Thrust".

[4] Czarnecki, Joseph. "Turboelectric Drive in American Capital Ships".{{cite web}}: CS1 maint: url-status (link)

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