BS EN ISO 18125:2017
$198.66
Solid biofuels. Determination of calorific value
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 68 |
This International Standard specifies a method for the determination of the absorbance at ultraviolet wavelengths of animal and vegetable fats and oils.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword Endorsement notice |
| 7 | Foreword |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Principle 4.1 Gross calorific value |
| 11 | 4.2 Net calorific value 5 Reagents |
| 12 | 6 Apparatus |
| 15 | 7 Preparation of test sample |
| 16 | 8 Calorimetric procedure 8.1 General |
| 18 | 8.2 Preparing the bomb for measurement 8.2.1 General procedure 8.2.2 Using combustion aid |
| 19 | 8.3 Assembling the calorimeter 8.4 Combustion reaction and temperature measurements |
| 20 | 8.5 Analysis of products of combustion 8.6 Corrected temperature rise θ 8.6.1 Observed temperature rise 8.6.2 Isoperibol and static-jacket calorimeters |
| 22 | 8.6.3 Adiabatic calorimeters 8.6.4 Thermometer corrections 8.7 Reference temperature 9 Calibration 9.1 Principle |
| 23 | 9.2 Calibrant 9.2.1 Certification conditions 9.2.2 Calibration conditions 9.3 Valid working range of the effective heat capacity ε |
| 24 | 9.4 Ancillary contributions 9.5 Calibration procedure |
| 25 | 9.6 Calculation of effective heat capacity for the individual experiment 9.6.1 Constant mass-of-calorimeter-water basis 9.6.2 Constant total-calorimeter-mass basis |
| 26 | 9.7 Precision of the mean value of the effective heat capacity ε 9.7.1 Constant value of ε |
| 27 | 9.7.2 ε as a function of the observed temperature rise 9.8 Redetermination of the effective heat capacity 10 Gross calorific value 10.1 General |
| 28 | 10.2 Combustion 10.3 Calculation of gross calorific value 10.3.1 General 10.3.2 Constant mass-of-calorimeter-water basis |
| 30 | 10.3.3 Constant total-calorimeter-mass basis |
| 31 | 10.3.4 ε as a function of the observed temperature rise 10.4 Expression of results 10.5 Calculation to other bases |
| 32 | 11 Performance characteristics 11.1 Repeatability limit 11.2 Reproducibility limit 12 Calculation of net calorific value at constant pressure 12.1 General 12.2 Calculations |
| 33 | 13 Test report |
| 34 | Annex A (normative) Adiabatic bomb calorimeters |
| 38 | Annex B (normative) Isoperibol and static-jacket bomb calorimeters |
| 44 | Annex C (normative) Automated bomb calorimeters |
| 47 | Annex D (informative) Checklists for the design and procedures of combustion experiments |
| 52 | Annex E (informative) Examples to illustrate the main calculations used in this document when an automated bomb calorimeter is used for determinations |
| 56 | Annex F (informative) List of symbols used in this document |
| 59 | Annex G (informative) Default values of most used solid biofuels for the calculations of calorific values |
| 60 | Annex H (informative) Flow chart for a routine calorific value determination |
| 61 | Bibliography |
| 62 | Index |
