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BSI
BS 845-2:1987

BS 845-2:1987

Current

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

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

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.

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.

Committee
RHE/10
DevelopmentNote
Supersedes 83/73795 DC and BS 845(1972) (10/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
DocumentType
Standard
Pages
50
PublisherName
British Standards Institution
Status
Current
Supersedes

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

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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