BS EN ISO 6976:2016 – TC:2020 Edition
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Tracked Changes. Natural gas. Calculation of calorific values, density, relative density and Wobbe indices from composition
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 197 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 133 | European foreword |
| 136 | Foreword |
| 137 | Introduction |
| 138 | 1 Scope |
| 139 | 2 Normative references 3 Terms and definitions |
| 142 | 4 Symbols and units 4.1 Quantities |
| 143 | 4.2 Subscripts 4.3 Superscript 5 Principles |
| 144 | 6 Behaviour of ideal and real gases 6.1 Enthalpy of combustion |
| 145 | 6.2 Calculation of compression factor 7 Calculation of calorific value on a molar basis 7.1 Gross calorific value |
| 146 | 7.2 Net calorific value 8 Calculation of calorific value on a mass basis 8.1 Gross calorific value |
| 147 | 8.2 Net calorific value 9 Calculation of calorific value on a volume basis 9.1 Ideal-gas gross calorific value 9.2 Ideal-gas net calorific value |
| 148 | 9.3 Real-gas gross calorific value 9.4 Real-gas net calorific value 10 Calculation of associated properties 10.1 Ideal-gas relative density |
| 149 | 10.2 Ideal-gas density 10.3 Ideal-gas gross Wobbe index 10.4 Ideal-gas net Wobbe index |
| 150 | 10.5 Real-gas relative density 10.6 Real-gas density 10.7 Real-gas gross Wobbe index |
| 151 | 10.8 Real-gas net Wobbe index 11 Uncertainty of calculation 11.1 Principles |
| 152 | 11.2 Formulae for the analytical method 11.3 Inputs for the analytical method 11.3.1 Composition and compositional uncertainties |
| 153 | 11.3.2 Non-compositional inputs |
| 154 | 11.4 Expanded uncertainty 11.5 Expression of results 11.5.1 General 11.5.2 Analytical method 11.5.3 Generic method 11.5.4 Contingency method |
| 155 | 11.6 Application of uncertainty |
| 156 | 12 Tables of data |
| 162 | Annex A (normative) Values of auxiliary constants |
| 164 | Annex B (normative) Formulae for uncertainty calculations |
| 169 | Annex C (informative) Conversion factors |
| 171 | Annex D (informative) Example calculations |
| 194 | Bibliography |
