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ASTM D4868-17
Standard Test Method for Estimation of Net and Gross Heat of Combustion of Hydrocarbon Burner and Diesel Fuels
NORMA vydaná dňa 1.1.2017
Informácie o norme:
Označenie normy: ASTM D4868-17
Dátum vydania normy: 1.1.2017
Kód tovaru: NS-675463
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D4868-17 :
Keywords:
burner fuels, diesel fuels, gross heat of combustion, heat energy, heat of combustion, heating tests, hydrocarbon fuels, net heat of combustion,, ICS Number Code 75.160.20 (Liquid fuels)
Doplňujúce informácie
| Significance and Use | ||||||||||||||||||||||||||||||||||||||||||||||||||
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4.1 This test method is intended for use in cases where an experimental determination of heat of combustion is not available and cannot be made conveniently, and where an estimate is considered satisfactory. It is not intended as a substitute for experimental measurement of heat of combustion. |
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| 1. Scope | ||||||||||||||||||||||||||||||||||||||||||||||||||
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1.1 This test method covers the estimation of the gross and net heat of combustion in SI units, megajoules per kilogram, of hydrocarbon fuels and blendstocks from the fuel density and sulfur, water, and ash contents. 1.1.1 This test method is not applicable to fuels containing non-hydrocarbons such as alcohols (for example, ethanol, methanol), ethers (for example, MTBE), or esters (for example, biodiesel). Note 1: The equation for estimation of net and gross heat of
combustion used in this method was originally published as NBS
Miscellaneous Publication No. 97.
1.2 This test method is especially useful for estimating, using a minimum number of tests, the heat of combustion of burner and diesel fuels (which do not contain non-hydrocarbon components) for which it is not usually critical to obtain very precise heat determinations. Note 2: More accurate estimation methods are available for
aviation fuels (Test Methods D1405, D4529,and D3338). However, those estimation methods
require additional tests to those required in this test
method.
1.3 This test method is purely empirical (Note 1). It was derived using liquid hydrocarbon fuels produced by normal refining processes from conventional crude oil that conform to the requirements of specifications for petroleum fuels as described in Note 3. This test method is valid for those fuels in the density range from 750 kg/m3 to 1000 kg/m3 and those that do not contain an unusually high aromatic content. High aromatic content fuels will not normally meet some fuel specification criteria. Note 3: The estimation of the heat of combustion of a
hydrocarbon fuel from its density and sulfur, water, and ash
content is justifiable only when the fuel belongs to well-defined
classes for which a relationship between these quantities have been
derived from accurate experimental measurements on representative
samples of these classes. Even in these classes, the possibility
that the estimate can be in error for individual fuels should be
recognized. This test method has been tested for a limited number
of fuels from oil sand bitumen and shale oil origin and has been
found to be valid. The classes of fuels used to establish the
correlation presented in this test method are represented by the
following applications:
1.4 This test method is not applicable to pure hydrocarbon compounds. It is not intended as a substitute for highly accurate experimental measurements of heat of combustion (Note 4). Note 4: The procedures for the experimental determination of
the gross and net heats of combustion are described in Test Methods
D240 and D4809.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||||||||||||||||
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