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  • BS 845-2:1987

    Current The latest, up-to-date edition.

    Methods for assessing thermal performance of boilers for steam, hot water and high temperature heat transfer fluids. Comprehensive procedure

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  30-06-1987

    Publisher:  British Standards Institution

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

    Foreword
    Committees responsible
    Method
    1. Scope
    2. Definitions
    3. Test preparation
    4. Minimum test duration
    5. Test operation
    6. Instrumentation
    7. Measurement procedure
    8. Calculations
    9. Report
    Appendices
    A. Report data
    B. Calculation of production rate of unweighed ash
    C. Radiation, convection and conduction losses for
         boilers of conventional design
    D. Guiding principles
    E. Selection of assessment procedure
    Tables
    1. Minimum duration of tests
    2. Measurement tolerances
    3. Symbols and units
    4. Typical radiation, convection and conduction
         losses from water-tube and shell boilers
    5. Typical radiation, convection and conduction
         losses from sectional hot water boilers
    Figures
    1. Diagram of heat flows in and out of the unit
    2. Boundary points of unit

    Abstract - (Show below) - (Hide below)

    A comprehensive test method, for assessing the thermal performance of any boiler, generally of output greater than 44 kW, including those with multiple thermal flows to and from the boiler and fired by solid, liquid or gaseous fuels.

    Scope - (Show below) - (Hide below)

    This Part of BS 845 describes a comprehensive procedure for conducting thermal performance tests on steam, hot water or high temperature heat transfer fluid boilers to give results within a tolerance of ± 2 percentage points1) and for presenting the results in tabular form. This Part makes use of both the direct and the indirect methods of test. Test results are based on either the gross or the net calorific value of the fuel.

    This comprehensive procedure is suitable for all boilers, including those with multiple thermal flows to and from the boiler.

    NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

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

    Committee RHE/10
    Development Note Supersedes 83/73795 DC and BS 845(1972) (10/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 5410-3:2016 Code of practice for oil firing Installations for furnaces, kilns, ovens, oil-fuelled generators and other industrial purposes
    BS 7190:1989 Method for assessing thermal performance of low temperature hot water boilers using a test rig
    BS PAS 67(2008) : 2008 LABORATORY TESTS TO DETERMINE THE HEATING AND ELECTRICAL PERFORMANCE OF HEAT-LED MICRO-COGENERATION PACKAGES PRIMARILY INTENDED FOR HEATING DWELLINGS
    12/30170835 DC : 0 BS 5410-2 - CODE OF PRACTICE FOR OIL FIRING - PART 2: SPACE HEATING, HOT WATER AND STEAM SUPPLY SERVICES FOR COMMERCIAL AND INDUSTRIAL PREMISES
    15/30319437 DC : 0 BS 5410-3 - CODE OF PRACTICE FOR OIL FIRING - PART 3: INSTALLATIONS FOR FURNACES, KILNS, OVENS, OIL-FUELLED STANDBY GENERATORS AND OTHER INDUSTRIAL PURPOSES
    BS 5410-2:2013 Code of practice for oil firing Installations over 45 kW output capacity for space heating, hot water and steam supply services

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 2000-13(1983) : 1983 METHODS OF TEST FOR PETROLEUM AND ITS PRODUCTS - CONRADSON CARBON RESIDUE OF PETROLEUM PRODUCTS
    BS 3285:1960 Methods of sampling superheated steam from steam generating units
    BS 526:1961 Definitions of the calorific value of fuels
    BS 4451:1980 Method for determination of carbon residue of petroleum products (Ramsbottom method)
    BS 1756-4:1977 Methods for sampling and analysis of flue gases Miscellaneous analyses
    BS 4937-4:1973 International thermocouple reference tables Nickel -chromium/nickel - aluminium thermocouples. Type K
    BS 3048:1958 Code for the continuous sampling and automatic analysis of flue gases: indicators and recorders
    BS 1704:1985 Specification for solid-stem general purpose thermometers
    BS 2000-12(1982) : 1982 METHODS OF TEST FOR PETROLEUM AND ITS PRODUCTS - HEAT OF COMBUSTION OF LIQUID HYDROCARBON FUELS
    BS 4937-1:1973 International thermocouple reference tables Platinum -10% rhodium/platinum thermocouples. Type S
    BS 3405:1983 Method for measurement of particulate emission including grit and dust (simplified method)
    BS 4937-2:1973 International thermocouple reference tables Platinum -13% rhodium/platinum thermocouples. Type R
    BS 1756-2:1971 Methods for the sampling and analysis of flue gases Analysis by the Orsat apparatus
    BS 1469:1962 Specification for coal tar fuels
    BS 1756-1:1971 Methods for the sampling and analysis of flue gases Methods of sampling
    BS 4937-3:1973 International thermocouple reference tables Iron/copper - nickel thermocouples. Type J
    BS 3812:1964 Recommendations for estimating the dryness of saturated steam
    BS 1756-3:1971 Methods for the sampling and analysis of flue gases Analysis by the Haldane apparatus
    BS 1017:1942 Methods for sampling of coal and coke
    BS 1042(1965) : LATEST
    BS 2486:1978 Recommendations for treatment of water for land boilers
    BS 893:1978 Method for the measurement of the concentration of particulate material in ducts carrying gases
    BS 2869:1983 Specification for fuel oils for oil engines and burners for non-marine use
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