Flow-Cal, Inc. and the American Petroleum Institute (API) - Chapter 11.1 provides the algorithm and implementation procedure for the correction of temperature and pressure effects on density and volume of liquid hydrocarbons.
API Chapter 11.1 Volume Correction Factors
The American Petroleum Institute has joined forces with Flow-Cal, Inc. to develop, market, and support the API Chapter 11.1 code (Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Products, Special Applications, and Lubricating Oils). This information is available in equations relating volume to pressure, which contains physical data that has direct application to volumetric measurement of liquid hydrocarbons.
Physical Properties Data
The subroutines for all the volumes of API Chapter 11.1 are now available in electronic form. This document contains the source code in C computer language to generate the various Volume Correction Factor tables. The source code may require modification for some computer systems to conform to the file naming convention of the computer system being used. This standard provides the algorithm and implementation procedure for the correction of temperature and pressure effects on density and volume of liquid hydrocarbons, which fall within the categories of crude oil, refined products, lubricating oils, and special applications.
Microsoft Excel® Add-in Program
The Excel Add-in function is a PC based spreadsheet for Microsoft Excel used to perform net corrected volume calculations for virtually all petroleum custody transfer and inventory control procedures. Users will be able to print customized VCF tables for API Gravity, density, and temperature.
Volume Correction Factor Manuals
For those that prefer a quick look-up guide over an electronic version, printed temperature correction (CTL) tables of the API Chapter 11.1 – 2004 algorithms are also available. The VCF manuals are offered in an abridged version, providing the optimal table range, or the full version with the complete table range. Custom ranges are available upon request.
The complete library of VCF manuals is listed below in both the U.S. Customary
and SI Series.
To purchase these tables or request additional information, please Contact Us or phone
(281) 282-0865 to speak to our sales staff.
U.S. Customary Series
|Volumes 1-8 are published for a temperature base of 60 Degree Fahrenheit, with API gravity and Degree Fahrenheit units as the lookup reference (using 0.5° gravity and 0.1° temperature increments). The abridged version is approximately 400 pages that include the following ranges: 15.0 – 89.9°API and 10.0 – 113.9°F.||Volumes 9-16 are published for a temperature base of 60 Degree Fahrenheit, with Relative Density and Degree Fahrenheit units as the lookup reference (using 0.002 relative density and 0.1° temperature increments). The abridged version is approximately 400 pages that include the following ranges: 0.6390 – 0.9370 Relative Density
and 10.0 – 113.9°F.
|Volume 1: 18.104.22.168 (Table 5A) Generalized Crude Oils||Volume 9: 22.214.171.124 (Table 23A) Generalized Crude Oils|
|Volume 2: 126.96.36.199 (Table 6A) Generalized Crude Oils||Volume 10: 188.8.131.52 (Table 24A) Generalized Crude Oils|
|Volume 3: 184.108.40.206 (Table 5B) Refined Products||Volume 11: 220.127.116.11 (Table 23B) Refined Products|
|Volume 4: 18.104.22.168 (Table 6B) Refined Products||Volume 12: 22.214.171.124 (Table 24B) Refined Products|
|Volume 5: 126.96.36.199 (Table 5C) Special Applications||Volume 13: 188.8.131.52 (Table 23C) Special Applications|
|Volume 6: 184.108.40.206 (Table 6C) Special Applications||Volume 14: 220.127.116.11 (Table 24C) Special Applications|
|Volume 7: 18.104.22.168 (Table 5D) Lubrication Oils||Volume 15: 22.214.171.124 (Table 23D) Lubrication Oils|
|Volume 8: 126.96.36.199 (Table 6D) Lubrication Oils||Volume 16: 188.8.131.52 (Table 24D) Lubrication Oils|
|Kilogram per Cubic Meter at 15°C
|Kilogram per Cubic Meter at 20°C
|Volumes 17-24 are published for a temperature base of 15 Degree Celsius, with density using Kilogram per Cubic Meters and Degree Celsius units as the lookup reference (using 2.0 kg/m3 and 0.05° temperature increments). The abridged version is approximately 450 pages that include the following ranges: 638.0 – 936.0 kg/m3
and -12.0 – 46.45°C.
|Volumes 25-32 are published for a temperature base of 20 Degree Celsius, with density using Kilogram per Cubic Meters and Degree Celsius units as the lookup reference (using 2.0 kg/m3 and 0.05° temperature increments). The abridged version is approximately 450 pages that include the following ranges: 638.0 – 936.0 kg/m3
and -12.0 – 46.45°C.
|Volume 17: 184.108.40.206 (Table 53A) Generalized Crude Oils||Volume 25: 220.127.116.11 (Table 59A) Generalized Crude Oils|
|Volume 18: 18.104.22.168 (Table 54A) Generalized Crude Oils||Volume 26: 22.214.171.124 (Table 60A) Generalized Crude Oils|
|Volume 19: 126.96.36.199 (Table 53B) Refined Products||Volume 27: 188.8.131.52 (Table 59B) Refined Products|
|Volume 20: 184.108.40.206 (Table 54B) Refined Products||Volume 28: 220.127.116.11 (Table 60B) Refined Products|
|Volume 21: 18.104.22.168 (Table 53C) Special Applications||Volume 29: 22.214.171.124 (Table 59C) Special Applications|
|Volume 22: 126.96.36.199 (Table 54C) Special Applications||Volume 30: 188.8.131.52 (Table 60C) Special Applications|
|Volume 23: 184.108.40.206 (Table 53D) Lubrication Oils||Volume 31: 220.127.116.11 (Table 59D) Lubrication Oils|
|Volume 24: 18.104.22.168 (Table 54D) Lubrication Oils||Volume 32: 22.214.171.124 (Table 60D) Lubrication Oils|