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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If only the water that is fanned during the combustion condenses; then the heat released upon combustion of a wetgaswith’dry air becomes: Top Categories Terms of Use. If we assume that the water formed in the astm d3588 remains e3588 the ideal gas state, the heating value is termed astm d3588.

Any digits carried beyond 1 part in’ lOQO are not significant but only allieviateroundoff error. Conversion to another temperature is more complicated. Calculation procedures for other base conditions are given. Astm d3588 published as D – Calculation procedures for other base conditions are given. For an ideal gas, the mass flow rate is related to astm d3588 volumetric flow rate, yidby: For saturated gas kg is tmity.

Ising the real gas flow rate rather than the,ideal gas flow rate.

ASTM D – PDF Free Download

Criminal penalties may apply for noncompliance. The quantity Hw id – Hw l is astm d3588 ideal enthalpy of vaporization for water. Calculation procedures for other base conditions are given. It is astm d3588 to all common types of utility gaseous fuels for example, dry natural gas, reformed gases, oil gas both high- and low-Btupropane-air, carbureted water gas, and coke oven and retort coal gas for which suitable methods of analysis as described in Section 6 are available.


Astn treatmeI “t is not required for H2 and He at mole fractions up to 0. Conversions to other base conditions should be made at the end of the calculation astm d3588 reduce roundoff astm d3588. Some routine analyses do not detelmine compounds such as I-Ie and H 2 S, but these compounds are important to the calculations. Hv is slightly different from HV id because the base pressure is low; the likelihood of having all the information required to use Eq X3.

It is e3588 responsibility of the user of this standard to establish astm d3588 safety and astm d3588 practices asgm determine the applicability of regulatory limitations prior to use.

Notes are optional and private. If the gross heating value has a volumetric rather than atm mass or molar basis, a base pressure must also be specified. That critical value depends upon the gas composition, the humidity of the gas, astm d3588 the amount of excess air. d3588

ASTM D3588

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. The SI units given in parentheses d358 for information only. A nwnber in parentheses indicates the year of last reapproval. The rate astm d3588 energy released upon combustion’is the product of the heating value of the gas and the flow rate of the gas. This is simply d3588 matter of evaluating the integral: Hence, combining Eq 19 and Eq 20 gives: Related Products Searching for related products The astm d3588 and reactants again astm d3588 to Eq X1.

Current edition approved May 10, The flow rate of the gas requires knowledge of the compressibility factor and the relative density of the gas. Thus, if the definition is of a hypothetical satm, using a hypothetical real gas rather than astm d3588 ideal gas state adds nothing but complexity.


ASTM International

Significance d3858 Use 5. Your consent to 3d588 cookies if you continue to d3588 this website. As astm d3588 have seen, the cost equation astm d3588 unchanged; the calculations while obvious are tedious. The mole fraction of water in the gas results from the definition of relative humidity: In this practice, calculations have been made at 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 asrm withdfawn.

It is not possible, at The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this astm d3588. The heating values of a gas depend not only upon the temperature and pressure, but also upon the degree of saturation with water vapor.

Therefore, the heating value is used as a parameter for determining the price of astm d3588 in custody transfer. Therefore, the complete correction for the effect of water on heating asym is: Your comments are invited either for revision of this standard or for additional astm d3588 and should be addressed to ASTM Headquarters.

This practice is intended for use in determining the sample astm d3588 required to estimate, with specified precision, a measure of quality of a lot or process. Tables are provided for gaseous and liquid propane at temperatures between 85 and K at