Table of Contents
What is the flash point of HFO?
The flash point is always above 50 °C (122 °F) and the density is always higher than 0.900. In general, heavy fuel oil usually contains cracked residua, reduced crude or cracking coil heavy product which is mixed (cut back) to a specified viscosity with cracked gas oils and fractionator bottoms.
Why HFO is used in ships?
HFO or heavy fuel oil is the most widely used type of fuels for commercial vessels. The fuel oil releases energy to rotate the ship propeller or the alternator by burning fuel inside the combustion chamber of the engine or to generate steam inside the boiler.
What is the difference between HFO and MDO?
Marine diesel is similar to diesel fuel, but has a higher density. Unlike heavy fuel oil (HFO), marine diesel oil does not have to be heated during storage. It has a similarly low viscosity to DMB, but a higher maximum permissible sulfur content of 3.5\%, and also a higher proportion of heavy fuel oil.
What are the properties of heavy fuel oil?
In the MARPOL Marine Convention of 1973, heavy fuel oil is defined either by a density of greater than 900 kg/m³ at 15°C or a kinematic viscosity of more than 180 mm²/s at 50°C. Heavy fuel oils have large percentages of heavy molecules such as long-chain hydrocarbons and aromatics with long-branched side chains.
Which fuel is used for ship?
Maritime vessels use bunker fuel to power their motors, but depending on your vessel, it might not be regular white diesel. Some watercraft indeed use diesel and other, larger vessels marine gas oil (which is considered a low sulfur fuel oil or LSFO) as their source of bunker fuel.
How is fuel oil consumption calculated on a ship?
Measuring and Reporting Fuel Oil Consumption The formula (Corrected Density = Density at 150C X [1 – {(fuel temp (0C) – 150C) X 0.00065}]) should be used to obtain the corrected density at the recorded fuel temperature.
Do ships still use HFO?
Presently, the use of HFOs is banned as a fuel source for ships travelling in the Antarctic as part of the International Maritime Organization’s (IMO) International Code for Ships Operating in Polar Waters (Polar Code). For similar reasons, an HFO ban in Arctic waters is currently being considered.
Does ship use fuel?
Cruise ships stay afloat as long as they can displace, or push aside, the same amount of water as their weight. By combining displacement with powerful engines, these passenger boats can move along smoothly. Smaller vessels generally use the same mechanics as the big ships, but burn less fuel in doing so.
Do ships use diesel or fuel oil?
What is the fuel of ship?
HFO is predominantly used as a fuel source for marine vessel propulsion due to its relatively low cost compared to cleaner fuel sources such as distillates….Heavy fuel oil use and shipping.
| Category of Marine HFO | Marine HFO Composition |
|---|---|
| Bunker C/Fuel oil No.6 | residual oil |