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BS EN 14918:2009

BS EN 14918:2009

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Solid biofuels. Determination of calorific value

Available format(s)

Hardcopy , PDF

Superseded date

08-31-2017

Language(s)

English

Published date

03-31-2010

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Preparation of test sample
8 Calorimetric procedure
9 Calibration
10 Gross calorific value
11 Precision
12 Calculation of net calorific value at constant pressure
13 Test report
Annex A (normative) - Adiabatic bomb calorimeters
Annex B (normative) - Isoperibol and static-jacket bomb
        calorimeters
Annex C (normative) - Automated bomb calorimeters
Annex D (informative) - Checklists for the design and
        procedures of combustion experiments
Annex E (informative) - Examples to illustrate the main
        calculations used in this document when an automated
        bomb calorimeter is used for determinations
Annex F (informative) - List of symbols used in this document
Annex G (informative) - Key-word index
Annex H (informative) - Default values of most used biofuels
        for the calculations of calorific values
Annex I (informative) - Flow chart for a routine calorific
        value determination
Bibliography

Defines a method for the determination of the gross calorific value of a solid biofuel at constant volume and at the reference temperature 25 degrees C in a bomb calorimeter calibrated by combustion of certified benzoic acid.

This European Standard specifies a method for the determination of the gross calorific value of a solid biofuel at constant volume and at the reference temperature 25 °C in a bomb calorimeter calibrated by combustion of certified benzoic acid.

The result obtained is the gross calorific value of the analysis sample at constant volume with all the water of the combustion products as liquid water. In practice, biofuels are burned at constant (atmospheric) pressure and the water is either not condensed (removed as vapour with the flue gases) or condensed. Under both conditions, the operative heat of combustion to be used is the net calorific value of the fuel at constant pressure. The net calorific value at constant volume may also be used; formulae are given for calculating both values.

General principles and procedures for the calibrations and the biofuel experiments are presented in the main text, whereas those pertaining to the use of a particular type of calorimetric instrument are described in Annexes A to C. Annex D contains checklists for performing calibration and fuel experiments using specified types of calorimeters. Annex E gives examples to illustrate some of the calculations.

Committee
PTI/17
DevelopmentNote
Supersedes DD CEN/TS 14918 & 09/30198714 DC. (03/2010)
DocumentType
Standard
Pages
64
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes
UnderRevision

Standards Relationship
EN 14918:2009 Identical

ISO 1928:2009 Solid mineral fuels Determination of gross calorific value by the bomb calorimetric method and calculation of net calorific value
PREN 15289 : DRAFT 2010 SOLID BIOFUELS - DETERMINATION OF TOTAL CONTENT OF SULFUR AND CHLORINE
EN 14774-2:2009 Solid biofuels - Determination of moisture content - Oven dry method - Part 2: Total moisture - Simplified method
ISO 10304-1:2007 Water quality Determination of dissolved anions by liquid chromatography of ions Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
PREN 15234-1 : DRAFT 2010 SOLID BIOFUELS - FUEL QUALITY ASSURANCE - PART 1: GENERAL REQUIREMENTS
PREN 14780 : DRAFT 2010 SOLID BIOFUELS - SAMPLE PREPARATION
ISO 651:1975 Solid-stem calorimeter thermometers
ISO 652:1975 Enclosed-scale calorimeter thermometers
EN 14774-1:2009 Solid biofuels - Determination of moisture content - Oven dry method - Part 1: Total moisture - Reference method
EN 14774-3:2009 Solid biofuels - Determination of moisture content - Oven dry method - Part 3: Moisture in general analysis sample
CEN/TS 15289:2006 Solid Biofuels - Determination of total content of sulphur and chlorine
EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)

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