UNI EN 12953-11 : 2005

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

This Part of this European Standard specifies a concise procedure for conducting thermal performance tests, using the indirect (losses) procedure for boilers for steam or hot water.