Mixing oil viscosity calculator1/8/2024 ![]() ![]() Use this information to estimate the enthalpy of vaporization. Post your questions, if any, and comments in the Help Discussion Forum. Viscosity cP at 20C Vapor pressure, mm Hg at 20C CAS number Surface tension. Try to verify the numbers given in Figure 9.13, and calculate a viscosity of the blend if viscosities were linearly additive to compare with the value calculated in Figure 9.13. of your textbook, and the procedure shown in Figure 9.13 to calculate the viscosity of the blend. For the same blend, we can use the Viscosity Blending Index Numbers in Table 12. Similar to pour point, the viscosity of blends can also be calculates using blending index numbers, or plots developed for this purpose. A serious underestimation of the pour point! Thinking that your diesel fuel has a pour point 8.4 ☏, you may try to start your diesel truck on a 12☏ day, to no avail, not knowing that your fuel tank has a gel, and not a liquid that can be easily pumped to the combustion cylinder. ![]() Note that if you would assume linear addition of the pour points, you would calculate a blend pour point as = 0.687x(-6) +0.313x40 = 8.4☏. Using the blend ASTM 50% just calculated (517) and the blending index for the blend from the pour factors (12.47), interpolate/read the pour point of the blend from the table in Figure 9.11, as 15☏.Calculate blend 50% ASTM temperature (linearly additive) of the blend by multiplying the volume fraction with ASTM 50% T of each component and adding them together (0.687x470 +0.313圆20 = 517).Add the pour factors for each component, to calculate the blending index for the blend = 12.47. When choosing between the two viscosities, it is worth noting that dynamic viscosity tells us about the force required to move the fluid at a certain speed. For example, the Pour Factor for straight-run gas oil = 0.687 x 6.3 = 4.33. The larger the force or stress needed to move the plate, the more viscous the fluid is. However, the idea is that lightly misting the top of the mixed epoxy with acetone will briefly lower the viscosity and cause more bubbles to come out. Multiply PPBI for individual distillates with their respective volume fraction to calculate the Pour Factor.Straight- run gas oil PPBI =6.3 (using double interpolation), and Hydrotreated heavy gas oil PPBI = 26. Read pour point blending indices for the two distillates in the table (PPI column) shown in Figure 9.11, and list it in the table (Figure 9.12).The procedure used to calculate the pour point of the blend (shown Figure 9.12) can be summarized as follows: My question is whether mixing two oils to obtain a specific viscosity is really as straightforward as I think.does mixing 1 quart of an 11.3 cSt oil with 1 of an 8.8 cSt really result in an oil of 10 cSt, or is there some. What would be the pour point of a binary blend that consists of 68.7 % vol of straight-run gas oil and 31.3% vol of hydrotreated heavy gas oil? Ive seen mention here of people mixing their own brew to achieve some desired characteristic not met by a single oil. On the other hand, the kinematic viscosity tells about the speed the fluid reaches when a particular force is applied to the fluid.By arrangement with Chevron Research CompanyĪs an example of using blending indices to calculate the pour point of a blend, consider blending a straight-run gas oil (50% ASTM T = 470☏ and pour point = -6☏) and a hydrotreated heavy gas oil (50% ASTM T = 620☏ and pour point = 40☏). The larger the force or stress needed to move the plate, the more viscous the fluid is. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |