Standard Test Method for Calculation of Liquid Heat Capacity of Petroleum Distillate Fuels

SIGNIFICANCE AND USE
Heat capacities obtained by this method are those at atmospheric pressure. However, because the temperature range is low, the calculated values are similar to saturated liquid heat capacities in the temperature-pressure range required for most engineering design.
SCOPE
1.1 This test method covers the calculation of liquid heat capacity, Btu/lb · °F (kJ/kg · K), at atmospheric pressure, of petroleum fuels for which distillation data may be obtained in accordance with Test Method D 86 without reaching a decomposition point prior to obtaining 90 volume % distilled.
1.2 This test method is not applicable at temperatures less than 0°F (−18°C) and greater than 60°F (16°C) above the volumetric average boiling point of the fuel.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Historical
Publication Date
30-Nov-2008
Current Stage
Ref Project

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ASTM D2890-92(2008) - Standard Test Method for Calculation of Liquid Heat Capacity of Petroleum Distillate Fuels
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2890 − 92 (Reapproved2008)
Standard Test Method for
Calculation of Liquid Heat Capacity of Petroleum Distillate
1
Fuels
This standard is issued under the fixed designation D2890; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope calculated heat capacity, temperature at which heat capacity is
being calculated, determined API gravity, and K.
1.1 This test method covers the calculation of liquid heat
3
capacity, Btu/lb·°F (kJ/kg·K), at atmospheric pressure, of
NOTE 1—Details of the method have been published.
petroleum fuels for which distillation data may be obtained in
4. Significance and Use
accordance with Test Method D86 without reaching a decom-
position point prior to obtaining 90 volume% distilled.
4.1 Heat capacities obtained by this method are those at
atmosphericpressure.However,becausethetemperaturerange
1.2 This test method is not applicable at temperatures less
than 0°F (−18°C) and greater than 60°F (16°C) above the is low, the calculated values are similar to saturated liquid heat
capacities in the temperature-pressure range required for most
volumetric average boiling point of the fuel.
engineering design.
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
5. Data Requirements
conversions to SI units that are provided for information only
5.1 Distillationtemperaturesat(in°F)10,30,50,70,and90
and are not considered standard.
volume% distilled obtained in accordance with Test Method
1.4 This standard does not purport to address all of the
D86.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 5.2 APIgravitydeterminedinaccordancewithTestMethod
priate safety and health practices and determine the applica- D287 or a method of equivalent accuracy.
bility of regulatory limitations prior to use.
6. Procedure
2. Referenced Documents
6.1 Calculate to the nearest 0.1 unit the slope of the Test
2
2.1 ASTM Standards: Method D86 distillation curve, °F/volume%, as the difference
D86Test Method for Distillation of Petroleum Products at between the 10 and 90 volume% distilled temperatures di-
Atmospheric Pressure vided by 80.
D287Test Method forAPI Gravity of Crude Petroleum and
6.2 Calculate to the nearest 1°F the volumetric average
Petroleum Products (Hydrometer Method)
boiling point (VABP) as the sum of Test Method D86 10, 30,
50, 70, and 90 volume% distilled temperatures divided by 5.
3. Summary of Test Method
6.3 Obtain a temperature correction to the nearest 1°F from
3.1 The Watson characterization factor, K, is obtained from
Fig.1,usingtheslopeandVABPcalculatedinaccordancewith
a graphical correlation relating determined Test Method D86
6.1 and 6.2. Calculate the mean average boiling point (Me-
distillation data and K. The liquid heat capacity is obtained,
ABP) as the VABP plus the correction.
eithergraphicallyormathematically,fromcorrelationsrelating
6.4 Obtain to the nearest 0.1 unit the Watson characteriza-
tion factor, K, from Fig. 2 using the determined API gravity
1 and calculated MeABP.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
6.5 Obtain the calculated heat capacity at each specified
D02.04.0K on Correlative Methods.
temperature, either graphically from Fig. 3 or by solving the
Current edition approved Dec. 1, 2008. Published February 2009. Originally
approved in 1970. Last previous edition approved in 2003 as D2890–92(2003). following equation:
DOI: 10.1520/D2890-92R08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Technical Data Book-Petroleum Refining, Chapter 7, American Petroleum
the ASTM website. Institute, Division of Refining, 1220 L St. NW, Washington, DC 20005.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D2890 − 92 (2008)
FIG. 1 Test Method D86 Distillation Data Correlation
FIG. 3 Liquid Heat Capacity of Petroleum Distillate Fuels
FIG. 2 Watson Characterization Factor (K), API Gravity, and
Mean Average Boiling Point
petroleumdistillatefuelhavinganAPIgravityof40andTestMethodD86
distillationtemperaturesof239,261,288,321,and367Fat10,30,50,70,
C 5 @0.6811 20.308 G1 0.000815 20.000306 G T# (1)
~ !
p
and 90 vol
...

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