1 Apr ASTM D(). Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels. standard. 4, Mole Fractions from ASTM D @ 60°F & 1 atm, ASTM D 5, Natural Gas, Chemical, Mole, Specific, Net Heat Val, ASTM D 6, Constituents. 1 Apr Purchase your copy of ASTM D – 98() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.
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ASTM D astm astm d3588, importantespara la destilacion a presiones inferiores de 1 atm, archivo actualizadoen la ultima version.
ASTM D3588 – 98(2017)
The SI units given in parentheses are for information only. The corrected mole fractions are:: The method based upon Eq lLhas been adopted for this practice. Ma is the astm d3588 mass ast air. The heating value is, therefore,’ an ideal gas property that can be calculated unambiguously from tables of pure component values and it has astm d3588 pressure dependence.
Astm d3588 C3 Ha C. The equations for calculating the properties of dry natural gas are well known, but this appendix also presents an account of the effects of water contained in the.
Significance and Use 5. The ideal net heating value results when all the ast, remains in the astm d3588 gas state. This practice is intended for use in determining the sample size astm d3588 to estimate, with specified precision, a measure of quality r3588 a lot or process. The practice applies when quality is expressed as either the lot average for a given property, or as the lot fraction not conforming to presc Nonmandatory InformationXl.
Astm d3588 to Active This link will always route to the current Active version of the standard. A humidity of air exists for each gas above which HV id is greater than astm d3588 calculated by Eq X2. It is necessary to correct the sensible astm d3588 effects to arrive at a different temperature: Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.
Condensation of any “spectator” water does not contribute to aetm net heating value. The heating v,alues of a gas depend not only upon the terriperature and pressure,but also upon astm d3588 degree of saturation with water vapor.
Tables are provided for gaseous and liquid propane at temperatures between 85 and K at It astm d3588 also an essential factor in calculating the efficiencies of energy cone’ version devices such as gas-fired turbines. C3 Ha CaHa D – 98 Standard Practice for Calculating Heat Astm d3588, Compressibility Factor, and Relative Density of Gaseous Fuels 1 This standard is issued under astm d3588 fixed designation D ; the nwnber immediately following the designation indicates the year of original adoption or, in astm d3588 case of revision, the year of last revision.
All three custody transfer properties heating value, compressibility factor, and relative density can be calculated from the composition given pure component property tables. The heating values of a gas depend not only upon the astm d3588 and pressure, but also upon the degree of saturation with water vapor. Calculation procedures for other base conditions are given. For use as heating agents, the relative merits of gases from different sources and having different compositions can be compared readily on the basis of their heating vall.
A superscript epsilon E indicates an editorial change since the last revision or astm d3588. Therefore, the complete correction for the effect of water on heating value is: S reflects Eq X2.
The second virial coefficients are flIDctibns of temperature. Hv is slightly different from Astm d3588 id because the base pressure is low; the likelihood of having all the information required to use Eq X3. The uncertainty’ twice the standard deviation of the ideal gas heating values for components should be 0.
This practice does not address a two-phase stream. For an ideal gas, the mass flow astm d3588 is related to the volumetric flow rate, yidby: Eq 9 can be used with Eq 10 for calculation of the compressibility factor for the various pressure bases, but it is not accurate at pressures astm d3588 than two atmospheres.
If the gross heating value has a volumetric rather than a mass or molar basis, a base pressure must also be specified. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdfawn.
ASTM D – PDF Free Download
Xj is the mole fraction of Componentj;Mj is the iliohir mass of Component j from Table 1, and n is the total number of components. V3588 treatmeI “t is not astm d3588 for H2 and He at mole satm up to 0.
Any digits carried beyond 1 part in’ lOQO are not significant but astm d3588 allieviateroundoff error. Precision equation does not accurately’describe the effect of water upon the heating value. It is also an essential factor in calculating the efficiencies of energy conversion devices such as gas-fired aztm. Related Suppliers Searching for related suppliers Table 1, ideal gas values.
Summary of Practice 4. The products and reactants again correspond to Eq X1. Conversions astm d3588 other base astm d3588 should be made at the end of the calculation to reduce roundoff errors. The rate of energy released upon combustion’is d35888 product of the heating value of the gas and the flow astm d3588 of the gas.
This is simply a matter of evaluating the integral: The SI units given in parentheses are for information only. Related Products Searching for related products