Skip to content
Please enter a keyword to search
  • Preview

    I.S. EN ISO 21654:2021

    Current The latest, up-to-date edition.

    Solid recovered fuels - Determination of calorific value (ISO 21654:2021)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  26-07-2021

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Reagents
    6 Laboratory conditions
    7 Apparatus
    8 Preparation of test sample
    9 Calorimetric procedure
    10 Calibration
    11 Gross calorific value
    12 Precision
    13 Calculation of net calorific value at constant pressure
    14 Test report
    Annex A (normative) Adiabatic combustion vessel calorimeters
    Annex B (normative) Isoperibol and static-jacket combustion vessel calorimeters
    Annex C (normative) Automated combustion vessel calorimeters
    Annex D (normative) Removed ash contributors
    Annex E (informative) Checklists for the design and procedures of combustion experiments
    Annex F (informative) Examples to illustrate the main calculations used in this document if an automated (adiabatic) combustion vessel calorimeter is used for determinations
    Annex G (informative) List of symbols used in this document
    Annex H (informative) Flow chart for a routine calorific value determination
    Annex I (informative) Interlaboratory test results
    Annex J (informative) Additional terms for the basis of results expression
    Annex K (informative) Environmental aspects
    Bibliography

    Abstract - (Show below) - (Hide below)

    This document specifies a method for the determination of gross calorific value of solid recovered fuels at constant volume and at the reference temperature 25 °C in a combustion vessel calorimeter calibrated by combustion of certified benzoic acid.

    General Product Information - (Show below) - (Hide below)

    Committee ISO/TC 300
    Document Type Standard
    Product Note THIS STANDARD IS ALSO REFERES TO ISO 21646 The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective