NBN EN 12953-11 : 2003
Current
The latest, up-to-date edition.
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
4.1 Symbols and units
4.2 Coefficients
5 General
6 Basic test conditions
6.1 General conditions
6.2 Steady-state conditions
6.3 Test procedure
6.4 Requirements during test
6.5 Duration of tests
6.6 Procedure for the determination of exhaust gas temperature and
CO, CO[2] and O[2] content
6.7 Undetermined losses
7 Instrumentation and methods of measurements
7.1 Instruments
7.2 Pressure measurements
7.3 Temperature measurements
7.4 Mass and mass flow
7.5 Calorific values
7.6 Chemical composition
8 Heat balance and thermal efficiency
8.1 General
8.2 Envelope boundary
8.3 Reference temperature
8.4 Heat input
8.5 Losses
8.6 Determination of efficiency by indirect method
8.7 Useful heat output
9 Accuracy
Annex A (informative) Calculation of combustion air/flue gas mass to
fuel mass ratios and specific heat
A.1 Combustion air/flue gas mass to fuel mass ratios
A.2 Ultimate analysis
A.3 Statistical analysis
A.4 Specific heat of flue gas and combustion air
Annex B (normative) Waste heat boilers
B.1 General
B.2 Useful heat output
B.3 Heat from waste gases
B.4 Heat input
B.5 Thermal efficiency
B.6 Methods of measurement
Bibliography
Describes a concise procedure for conducting thermal performance tests, using the indirect (losses) procedure for boilers for steam or hot water.
DevelopmentNote |
Supersedes NBN 731, NBN 732, NBN 733, NBN 734, NBN 735, NBN 736, NBN 737, NBN 738, NBN 739, NBN 740, NBN 741, NBN 743, NBN I 01 003, NBN I 01 004, NBN I 01 005, NBN I 01 022 and NBN I 01 002. (04/2011)
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DocumentType |
Standard
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PublisherName |
Belgian Standards
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Status |
Current
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Supersedes |
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Standards | Relationship |
UNE-EN 12953-11:2004 | Identical |
UNI EN 12953-11 : 2005 | Identical |
DIN EN 12953-11:2003-12 | Identical |
BS EN 12953-11:2003 | Identical |
EN 12953-11:2003 | Identical |
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