![]() The API gravity for pure water in that case will be: API = (141.5 / 1) - 131.5 = 10 ☊PI The API gravity is often compared with water such that, the relative density of heavy oil at 60 ☏ is taken as 1.0, the same value as for pure water. Therefore, one can directly calculate API gravity from density. Where, density of water is taken as 999 kg/m 3. The specific gravity of the liquid can be estimated from their density using the equation below: Specific gravity = ρ Liquid / ρ water However, it is often used with a degree symbol, such as the degree of API gravity (☊PI). The API gravity parameter is dimensionless, based on the equation. The above equation can also be called the specific gravity to the API conversion formula. Rearranging the terms, we get: API = (141.5 / Specific Gravity) - 131.5 The API gravity of a crude product is related to the specific gravity using the equation: Specific Gravity = 141.5 / (131.5 + API) The specific gravity is then used in the API gravity formula. To find the API gravity of a liquid, initially, the relative density is calculated using a hydrometer or an oscillating U-tube conforming to industry standards ASTM D1298 or D4052. The API gravity is calculated based on the specific gravity of the liquid. The term API in API gravity stands for American Petroleum Institute, with reference to the institution that developed it. The API gravity is a measure of the heaviness of crude oil product when compared with water.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |