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PREN 14918 : DRAFT 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Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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SOLID BIOFUELS - DETERMINATION OF CALORIFIC VALUE

Superseded date

01-12-2009

Superseded by

EN 14918:2009

Published date

12-01-2013

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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
  A.1 Principle
  A.2 Sources of error for the real calorimeter
  A.3 Adiabatic conditions
  A.4 Initial steady state and length of the main period
  A.5 Correction for drift at the final temperature
  A.6 Strategy for checking on bias
Annex B (normative) - Isoperibol and static-jacket bomb
        Calorimeters
  B.1 Principle
  B.2 Sources of error for the real calorimeter
  B.3 Choice of jacket temperature
  B.4 Rating periods
  B.5 Calculation of the corrected temperature rise theta
Annex C (normative) - Automated bomb calorimeters
  C.1 The instrument
  C.2 Calibration
  C.3 Precision requirements for calibrations
  C.4 Comparability of calibration and fuel experiments
  C.5 Documentation and print-out
  C.6 Precision requirements for fuel experiments
Annex D (informative) - Checklists for the design and
        procedures of combustion experiments
  D.1 Introduction
  D.2 Choice of general parameters
  D.3 Adiabatic calorimeters
  D.4 Isoperibol calorimeters
  D.5 Automated bomb calorimeters
Annex E (informative) - Examples to illustrate the main
        calculations used in this document when an
        automated bomb calorimeter is used for determinations
  E.1 Gross calorific value at constant volume
  E.2 Gross calorific value at constant pressure
  E.3 Net calorific value
  E.4 Use of typical or default values to calculate calorific
      values
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 degree C in a bomb calorimeter calibrated by combustion of certified benzoic acid.

Committee
TC 335
DocumentType
Draft
PublisherName
Comite Europeen de Normalisation
Status
Superseded
SupersededBy

Standards Relationship
09/30198714 DC : 0 Identical
NEN EN 14918 : 2010 Identical

09/30205125 DC : 0 BS EN 15400 - SOLID RECOVERED FUELS - DETERMINATION OF CALORIFIC VALUE

ISO 1928:2009 Solid mineral fuels Determination of gross calorific value by the bomb calorimetric method and calculation of net calorific value
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
CEN/TS 15296:2006 Solid Biofuels - Calculation of analyses to different bases
CEN/TS 14774-2:2004 Solid biofuels - Methods for the determination of moisture content - Oven dry method - Part 2: Total moisture - Simplified method
CEN/TS 14774-3:2004 Solid biofuels - Methods for the determination of moisture content - Oven dry method - Part 3: Moisture in general analysis sample
CEN/TS 15234:2006 Solid biofuels - Fuel quality assurance
ISO 651:1975 Solid-stem calorimeter thermometers
ISO 652:1975 Enclosed-scale calorimeter thermometers
CEN/TS 14774-1:2004 Solid biofuels - Methods for determination of moisture content - Oven dry method - Part 1: Total moisture - Reference method
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)
CEN/TS 14780:2005 Solid biofuels - Methods for sample preparation

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