Because the calculations are based on exact numbers, coefficients, and constants, there may be a variance of up to 0.00002 between the computed values below and those found in the traditional tables. The calculator below omits the tables and computes the required values for you. Such methods are often time-consuming and tedious. Traditionally, CTL/VCF values are found in books/tables provided by the American Petroleum Institute, matching the temperature and density to find the CTL/VCF values. These two numbers will be computed with the coefficient of thermal expansion at 60☏ (α₆₀) based on the selected commodity and return the CTL/VCF Value. Using the calculator below, enter the Temperature in degrees Fahrenheit ( ☏ ), and the Density in Degrees API. As such, the CTL/VCF value is computed using the observed temperature and density of a liquid. The CTL/VCF is typically a number between 0 and 2, rounded to 5 decimal places, which when multiplied by the observed volume of a liquid, will return the corrected value to a standardized base temperature and density. Volume Correction Factor (VCF) – The Correction for the effect of Temperature on Liquid (CTL)ĬTL, commonly referred to as VCF, is a standardized computed factor used to correct for the thermal expansion of liquids, primarily, liquid hydrocarbons.
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