Mixtures of biodiesel with petroleum diesel are named as BXX, where XX is the percentage of biodiesel in the blend.īy the way - petroleum diesel also contains up to 7 % biodiesel according to country-specific laws. The inputs for water PVT correlation are pressure, temperature, and salinity. Viscosity also influences the fuel delivery rate and the atomization of the fuel during injection.īiodiesel or FAME (fatty acid methyl ester) is an alternative diesel fuel derived from renewable feedstocks such as used cooking oils, rapeseed oil, animal fat or soybean oil. The viscosity value in CGS units is 8.90 x 10 3 dyns/cm 2 or 0.890 cP.As a result, the viscosity of water is 0.0091 poise.The terms viscosity and density.

Too low viscosity may lead to a lack of lubrication. cam and follower wear) due to higher pressure. The viscosity of a fluid may be determined by observing the pressure drop when it flows at a known rate in a tube, as analyzed in Section 3.2. The viscosity of water at a temperature of 20 degrees Celsius is roughly equal to 0.01 poise or 10-3 Pa.s (Pascal seconds). Table 1.11 gives viscosity conversion factors. Fuel which is too highly viscous can cause damage in the fuel pump (e.g. The centipoise (cP), one hundredth of a poise, is also a convenient unit, since the viscosity of water at room temperature is approximately 0.01 P or 1.0 cP. Viscosity is generally an important parameter for diesel fuel. Higher cetane numbers are an indicator of better ignitability of the fuel when injected into the cylinder filled with hot compressed air. The minimum cetane number is 51 according to EN 590. An important parameter for the quality of a diesel fuel is the cetane number. The kinematic viscosity m2/s is the ratio between the dynamic viscosity Pa.s 1 kg/ms and the density of a fluid kg/m3. Dynamic viscosity of glycerol, g Similarly, the following exponential formula is proposed for calculating the dynamic viscosity of glycerol, T T g 9900 70 ( 1233 ) 12100 exp (22) where g is in cP or 0.001Ns/m 2 and T is in oC. 8 to 21 carbon atoms per molecule obtained by crude oil distillation. Generally, diesel fuel is liquid fuel to power diesel engines used mainly in road vehicles, water crafts, rail vehicles and stationary engines.

Water viscosity cp