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  • BS 848-1:1997

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Fans for general purposes Performance testing using standardized airways

    Available format(s):  Hardcopy, PDF

    Superseded date:  29-02-2008

    Language(s):  English

    Published date:  15-09-1997

    Publisher:  British Standards Institution

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

    1 Scope
    2 Normative references
    3 Definitions
    4 Symbols and units
    5 General
    6 Instrumentation for pressure measurement
    7 Determination of average pressure in an airway
    8 Measurement of temperature
    10 Determination of power input
    11 Measurement of dimensions and determination of areas
    12 Determination of air density, humid gas constant and
        viscosity
    13 Determination of flowrate
    14 Calculation of test results
    15 Rules for conversion of test results
    16 Fan characteristic curves
    17 Uncertain analysis
    18 Selection of test method
    19 Installation of fan and test airways
    20 Carrying out the test
    21 Determination of flowrate
    22 Determination of flowrate using ISO Venturi nozzle
    23 Determination of flowrate using multiple nozzles or
        Venturi nozzle
    24 Determination of flowrate usoing a quadrant inlet nozzle
    25 Determination of flowrate using a conical inlet
    26 Determination of flowrate using an orifice plate
    27 Determination of flowrate using a Pitot-state tube
        traverse
    28 Installation categories and setups
    29 Component parts of standardized airways
    30 Common airway segments for ducted fan installation
    31 Standardized test chambers
    32 Standard methods with test chambers - type A installations
    33 Standard methods with outlet-side test ducts - type B
        installations
    34 Standard methods with inlet-side test ducts or chambers -
        Type C installations
    35 Standard methods with inlet- and outlet-side test
        ducts - type D installations
    Annexes
    A Fan pressure and fan installation types
    B Fan-powered roof exhaust ventilators
    C Direct calculations of psan and pn at section n of the fan -
        installation types B, C and D
    D Fan outlet elbow in case of a non-horizontal discharge
        axis
    E Bibliography

    Abstract - (Show below) - (Hide below)

    Concerned with determining the performance of industrial fans of all types, not including those intended solely for the circulation of air (such as ceiling and table fans). Provides estimates of uncertainty for speed changes, gas handled and size.

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

    Committee MCE/17
    Development Note Supersedes 93/703567 DC and BS 848-1(1980) (10/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
    IEC 60051-4:1984 Direct acting indicating analogue electrical measuring instruments and their accessories. Part 4: Special requirements for frequency meters
    NFX 10 200 : 1986 REGLES D'ESSAIS AERAULIQUES EN PLATE-FORME DES VENTILATEURS A ENVELOPPE REFOULANTS ET ASPIRANTES-REFOULANTS - METHODE DU CAISSON REUIT AU REFOULEMENT
    AMCA 210 : 2016 LABORATORY METHODS OF TESTING FANS FOR CERTIFIED AERODYNAMIC PERFORMANCE RATING
    IEC 60051-2:1984 Direct acting indicating analogue electrical measuring instruments and their accessories. Part 2: Special requirements for ammeters and voltmeters
    ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements
    IEC 60034-2:1972 Rotating electrical machines. Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles)
    ISO 5221:1984 Air distribution and air diffusion Rules to methods of measuring air flow rate in an air handling duct
    ISO 3966:2008 Measurement of fluid flow in closed conduits Velocity area method using Pitot static tubes
    NFE 51 100 : 83 FD INDUSTRIAL FANS - COMPRESSIBILITY EFFECT OF THE FLUID
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