Flow-X─ Function Reference
3-43
Flow-X General functions - fxAPI_Dens15C_1980
fxAPI_Dens15C_1980
Description
Density (T, P) <--> Density (15°C, equilibrium pressure)
This function converts a density value at the observed temperature and pressure to the density value at
15°C and the equilibrium pressure (typically 0 bar(g)) or vice versa.
The temperature conversion is according to API-2540, Tables 53A/54A (Generalized Crude Oils) and
53B/54B (Refined Oil Products) and API MPMS 11.1 Chapter XIV Table 53D/54D: 1984 (Lubricating Oils),
while the volume correction for pressure according to API MPMS 11.2.1M.
An iterative calculation needs to be applied to convert the observed density to the value at base
conditions.
Note: this function is a combination of API2540 and API 11.2.1M. For the calculation from observed to
standard conditions an iterative calculation is required. The rounding and truncating of input and
intermediate values is implemented such that the example calculations as specified in both standards
are
exactly
reproduced.
Compliance
API MPMS 11.1 Volume X (API Standard 2540) - Table 53A - Generalized Crude Oils,
Correction of Observed Density to Density at 15°C - First Edition, August 1980
API MPMS 11.1 Volume X (API Standard 2540) - Table 54A - Generalized Crude Oils,
Correction of Volume to 15°C against Density at 15°C- First Edition, August 1980
API MPMS 11.1 Volume X (API Standard 2540) - Table 53B - Generalized Products,
Correction of Observed Density to Density at 15°C - First Edition, August 1980
API MPMS 11.1 Volume X (API Standard 2540) - Table 54B - Generalized Products,
Correction of Volume to 15°C against Density at 15°F - First Edition, August 1980
API MPMS 11.1 Volume XIV - Table 53D - Generalized Lubricating Oils, Correction of
Observed Density to Density at 15°C - January 1982
API MPMS 11.1 Volume XIV - Table 54D - Generalized Lubricating Oils, Correction of Volume
to 15°C against Density at 15°F - January 1982
API MPMS 11.2.1M - Compressibility Factors for Hydrocarbons: 638 - 1074 Kilograms per
Cubic Meter Range - First Edition, August 1984
Содержание flow-x
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