What is the viscosity of marine gas oil?
Diesel oil, often referred to as Marine Diesel Oil (MDO) or Marine Diesel Fuel (MDF), has a specific density of about 0.9 g/cm3; the flash point is above 600C. The calorific value is about 44000 kJ/kg; the kinematic viscosity is about 8 to 11 cSt at 400C, and the sulphur content is about 2%. The colour is brownish.
What is HFO in Marine?
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 a good viscosity for fuel?
Fuel oil’s viscosity strongly depends on the temperature, the higher is the temperature the lower is the viscosity. For optimal combustion the viscosity of the fuel should be in the range of 10–20 cSt.
What is the viscosity of #2 fuel oil?
The viscosity of typical No. 2 fuel oil increases from 35 SSU at 100°F to 52 SSU at 30°F.
What is the difference between MGO and MDO?
MGO usually consists of a blend of various distillates. While MGO is made only from distillates, MDO is a distillate blended with HFO that may contain very small amounts of black refinery feed stock. When residual fuel oil is blended with distillates, the blend is called Intermediate Fuel Oil (IFO).
What is MDO and MGO?
In the maritime field another type of classification is used for fuel oils: MGO (Marine gas oil) – Roughly equivalent to no. 2 fuel oil, made from distillate only. MDO (Marine diesel oil) – Roughly equivalent to no.
What is the difference between LDO and HFO?
Light Diesel Oil (LDO) is used for initial start up while heavy fuel oil (HFO) is used for flame stabilization, mill change over and during low load operation of boilers.
What is the difference between HFO and LFO?
HFO has a naturally high viscosity, while low-sulphur content marine diesel fuels (MDFs) such as marine gas oil (MGO), ultra-low sulphur fuels (ULSFO), light fuel oil (LFO) or diesel fuel oil (DFO) have a low viscosity.
Is higher viscosity better for fuel?
Put simply, viscosity determines the speed that oil flows. A viscosity that is too high requires more energy to flow as it is less efficient and economical.
Is high viscosity good for fuel?
The greater a lubricant’s viscosity, the greater pressure or load it can withstand, and the better it maintains separation between moving parts. But there are limits to this relationship. If the viscosity is too high, it won’t flow as readily and your engine will work harder and burn more fuel.
What is the viscosity of the oil?
Engine oil viscosity refers to how easily oil pours at a specified temperature. Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have a higher viscosity.
What is the viscosity of diesel oil?
2. The bio-oils compositions and physical properties
|Density||103 kg m−3||0.83|
|Viscosity at 37.8 °C||10−6 m2 s−1||2 à 4.3|
|Flash point||K||Min. 334|
What is the maximum viscosity of marine fuel oil RMG 380?
This technical topic helps explain ISO specification 8217 for Marine Fuel Oil RMG 380, which stipulates a maximum viscosity of 380 cSt. However, there is no minimum limit specified in 8217. In certain refinery configurations, residual fuel may be produced straight from atmospheric distillation instead of normal catalytic cracking streams.
What is the viscosity of fuel oil?
Generally, fuel oil viscosity is regulated between 10-15 centistrokes at 50 degree Celsius. Viscosity regulators are used to regulate and maintain the fuel oil viscosity.
What is the role of viscosity in marine engine performance?
/ By /. Fuel is the lifeblood on marine engines and hence proper characteristics of fuel need to be maintained on ships. Viscosity is one of the most important factors which directly affects combustion quality. Controlling the viscosity of fuel oil is an important aspect of an efficient combustion.
What are the current regulations on oily water discharge from ships?
Current regulations with respect to the discharge of oily water from ships set limits of concentration 15 parts per million. A monitor is required in order to measure these values and provide both continuous records and an alarm where the permitted level is exceeded…..