ASTM D3588-98 (2017) rus PDF

Full title and description

ASTM D3588-98 (Reapproved 2017) — Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels. This entry refers to the original ASTM practice (1998) and its Russian-language distribution/translation editions (catalogued as “rus” translations). The practice provides calculation procedures to derive heating value (calorific value), compressibility factor (Z) and relative density (specific gravity) of common utility gaseous fuels from compositional analyses.

Abstract

This practice covers procedures for calculating, from compositional analyses, the heating value, relative density, and compressibility factor of gaseous fuel mixtures at base conditions (14.696 psia and 60 °F / 15.6 °C). It applies to a wide range of gas types including dry natural gas, reformed gas, oil gas, propane-air mixtures, and manufactured gases such as carbureted water gas and coke-oven gas. Calculation options for other base conditions and references to applicable compositional analysis methods are provided.

General information

• Status: Reapproved 2017 (original designation D3588‑98). Some databases list historical lifecycle entries; consult ASTM for the absolute current status.
• Publication date: Original adoption 1998; reapproval/publication entry 31 March 2017 (D3588‑98 reapproved 2017).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 75.160.30 — Gaseous fuels (ICS group for gaseous fuels and related standards).
• Edition / version: Designation D3588‑98 (Reapproved 2017). Some commercial catalogues also show later editorial entries (e.g., e1 redline editions); check the ASTM record for the precise edition code you require.
• Number of pages: 9 pages (typical published length for the practice).

Scope

The standard provides calculation methods to determine ideal and real (net) heating values, compressibility factors, and relative densities for gaseous fuel mixtures based on compositional data. It specifies required completeness of compositional reporting (individual components/groups) and references applicable analytical methods (ASTM and GPA methods) for obtaining composition. The practice is intended for use where compositional analyses are available and is applicable across the range of utility gaseous fuels.

Key topics and requirements

• Calculation of ideal and net (real) heating values from composition.
• Determination of compressibility factor (Z) for real-gas corrections at specified base conditions.
• Computation of relative density (specific gravity) referenced to air at the same conditions.
• Requirements for compositional analysis reporting (components ≥0.1 % and ≥98 % total reported as individual components or allowed groups).
• References to applicable analytical methods (e.g., ASTM and GPA methods) and options for alternate base conditions.

References and example calculation procedures are included to assist application; users should follow specified conventions for molecular weights, gas constants and phase assumptions.

Typical use and users

Engineers, laboratory analysts, gas suppliers, pipeline operators, utilities, and regulators use this practice to convert compositional analyses into engineering properties for custody transfer, energy accounting, pipeline hydraulics, safety calculations and thermodynamic evaluations. It is typically applied where gas chromatographic or mass-spectrometric compositional data are available.

Related standards

Standards commonly referenced alongside D3588 include ASTM and GPA methods for compositional analysis (for example, ASTM D1717, D1945, D2163, D2650 and GPA standards for physical constants and sampling procedures), and other calculation/measurement practices for heating value and gas properties. Related ISO/EN documents on gas composition and calorific value calculations may also be relevant.

Keywords

gaseous fuels; heating value; calorific value; compressibility factor; compressibility (Z); relative density; specific gravity; natural gas; LPG; manufactured gas; gas composition; calculation practice.

FAQ

Q: What is this standard?

A: ASTM D3588‑98 (Reapproved 2017) is a practice that specifies calculation procedures to obtain heating value, compressibility factor and relative density of gaseous fuels from compositional analyses.

Q: What does it cover?

A: It covers calculation methods for ideal and net heating values, compressibility corrections, and relative density at base conditions (14.696 psia and 60 °F / 15.6 °C), plus requirements for compositional reporting and references to appropriate analytical methods.

Q: Who typically uses it?

A: Gas laboratory personnel, process and pipeline engineers, utility companies, gas suppliers, and regulatory bodies—anyone needing to convert gas composition into energy and physical property values.

Q: Is it current or superseded?

A: The practice was originally adopted in 1998 and was reapproved in 2017. Some standards catalogues record subsequent editorial or reissue entries (e.g., e1/redline listings). Users requiring the definitive current status or the latest editorial version should confirm the active edition directly with ASTM International.

Q: Is it part of a series?

A: It is part of ASTM Committee D03 (Gaseous Fuels) outputs and is used alongside ASTM and GPA methods for gas analysis and property calculations; it is not a numbered "series" but is linked by subject to other gaseous-fuel practices and test methods.

Q: What are the key keywords?

A: Heating value, calorific value, compressibility factor, relative density, specific gravity, gaseous fuels, natural gas, propane-air, manufactured gas.