I.S. EN 15255:2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and units
  3.1 Terms and definitions
  3.2 Symbols and units
  3.3 Subscripts
4 Basic assumptions
5 Data requirement
  5.1 General
  5.2 Climatic data
  5.3 Descriptions of the envelope elements
      5.3.1 General
      5.3.2 Boundary conditions
      5.3.3 Heat transfer coefficients
      5.3.4 Geometrical and thermophysical parameters
            of the room envelope
  5.4 Cooling system device
      5.4.1 General
      5.4.2 Convective device
      5.4.3 Cooled surface device
  5.5 Classification of the cooling load calculation
      method
6 Report of the calculation
7 Validation procedures
  7.1 General
  7.2 Reference room
  7.3 Climatic data
  7.4 Test cases
  7.5 Parameters to be calculated
  7.6 Test results
Annex A (informative) - Example of calculation method
        based on a simplified model
      A.1 Introduction
      A.2 Calculation of internal air and operative
          temperatures for a given value of applied
          cooling power
          A.2.1 Presentation
          A.2.2 Determination of the air and operative
                temperatures
          A.2.3 Terms in Equations (A.1), (A.2), (A.3),
                (A.4) and (A.5)
      A.3 Calculation of internal temperatures and required
          cooling power
          A.3.1 General description
          A.3.2 Calculation procedure for control on
                air temperature
          A.3.3 Calculation procedure for control on
                operative temperature
Bibliography

Sets out the level of input and output data, and prescribes the boundary conditions required for a calculation method of the sensible cooling load of a single room under constant and/or floating temperature taking into account the limit of the peak cooling load of the system.