PREN 14335 : DRAFT 2001

FOREWORD
1 SCOPE
2 NORMATIVE REFERENCES
3 DEFINITIONS AND SYMBOLS
  3.1 DEFINITIONS
  3.2 SYMBOLS AND UNITS
4 PRINCIPLE OF THE METHOD
  4.1 PRIMARY ENERGY
  4.2 FINAL ENERGY REQUIRED FOR SPACE HEATING
  4.3 FINAL ENERGY REQUIRED BY THE DOMESTIC HOT WATER
       SYSTEM
  4.4 AUXILIARY ENERGY
  4.5 RECOVERABLE AND RECOVERED HEAT LOSSES
  4.6 HEAT DEMAND FOR SPACE HEATING
  4.7 HEAT DEMAND FOR DOMESTIC HOT WATER
  4.8 HEAT LOSSES DUE TO THE SPACE HEATING SYSTEM
  4.9 HEAT LOSSES DUE TO THE DOMESTIC HOT WATER SYSTEM
  4.10 CALCULATION PERIODS
  4.11 SPATIAL DIVISION OF THE SPACE HEATING AND DOMESTIC
       HOT WATER SYSTEM
  4.12 SPACE HEATING AND DOMESTIC HOT WATER SYSTEM
       PERFORMANCE
5 ENERGY CALCULATION FOR A SPACE HEATING AND DOMESTIC HOT
  WATER SYSTEM
  5.1 ENERGY LOSSES FROM THE SPACE HEATING SYSTEM
  5.2 ENERGY LOSSES FROM THE DOMESTIC HOT WATER SYSTEM
  5.3 SPLITTING AND/OR BRANCHING OF THE HEATING SYSTEM
  5.4 SIMPLIFIED AND DETAILED METHODS FOR CALCULATION OF
       THE TOTAL SYSTEM LOSS