For batch transesterification of tobacco seed oil with methanol, the influence of four processing factors on the methyl ester quantity, kinematic viscosity
, density, freezing point and flash point were simultaneously analyzed employing the multi response Taguchi method.
Moreover, after every week, changes in acid value and kinematic viscosity
of diesel and biodiesel were noted before replacement with fresh fuels.
ASTM D-6751 standard requires 1.9 to 6 [mm.sup.2]/s as the limits of Kinematic viscosity
This is thought to be mainly due to the difference in kinematic viscosity
. In Fluorinert B having low viscosity, it was considered that Silicone Oil A exhibited good performance because the fraction of scattering when colliding with the heat sink was large.
Babassu biodiesel ANP 45/2014 Specific gravity at 20 854 [+ or -] 9.2 850-900 [degrees]C (Kg [m.sup.-3]) Specific gravity at 40 832 [+ or -] 8.0 Not [degrees]C (Kg [m.sup.-3]) specified Kinematic viscosity
at 20 6.75 [+ or -] 0.22 Not [degrees]C ([mm.sup.2] specified [s.sup.-1]) Kinematic viscosity
at 40 3.04 [+ or -] 0.12 3.0-6.0 [degrees]C ([mm.sup.2] [s.sup.-1]) Acid number (mgKOH/g) 0.013 [+ or -] 0.002 0.50 Iodine number ([gl.sub.2]/100g) 48.6 [+ or -] 1.1 Registered Free glycerin (%) 0.024 [+ or -] 0.002 0.25 Table 2.
at 40AdegC (cSt)###D-445###4.11###4.42###4.18###4.23###4.16###4.17###4.14###4.11###1.9-6.0
The use of ultra-low sulfur fuels requires the use of support devices to maintain the kinematic viscosity
in the operating range of the high-pressure pump group to avoid damaging and temperature-shocking equipment and system.
Effects of time on the viscosity of standard milk formula, thickened and incubated at 37[degrees]C Time V (cSt) V (cSt) V (cSt) (minutes) 2% 3% 5% 0 4.17 [+ or -] 7.37 [+ or -] 0.81 18.31 [+ or -] 3.69 0.99 20 5.13 [+ or -] 7.73 [+ or -] 1.24 23.82 [+ or -] 3.87 1.19 40 5.26 [+ or -] 8.15 [+ or -] 0.57 25.98 [+ or -] 2.62 1.21 60 5.97 [+ or -] 8.73 [+ or -] 0.20 25.80 [+ or -] 2.69 0.63 p-value 0.277 0.263 0.065 V= Viscosity; cSt= CentiStoke (unit of kinematic viscosity
) p-value 2% vs 3%--0.072 p- value 2% vs 5%--0.000 p- value 3% vs 5%--0.000 Table 2.
The dependent variable, coefficient of friction ([mu]), and independent variables, density @ 15[degrees]C ([rho]), kinematic viscosity
@ 40[degrees]C ([v.sub.40]), and TAN, for the selected lubricants are given in Table 8.
Unfortunately, increase of the rotation speed above a certain value does not bring significant improvements of the LIBS signal as the minimum achievable film thickness depends on kinematic viscosity
of liquid, which is a measure of resistance to flow and shear.
The kinematic viscosity
is important for proper transport of fuel from tank to engine.