1 Scope
This document specifies a calculation procedure for the conversion of climatic data
for energy calculations.
The main element in this document is the calculation of solar irradiance on a surface
with arbitrary orientation and tilt. A simple method for conversion of solar irradiance
to illuminance is also provided.
The solar irradiance and illuminance on an arbitrary surface are applicable as input for energy and daylighting calculations,
for building elements (such as roofs, facades and windows) and for components of technical
building systems (such as thermal solar collectors, PV panels).
Other parameters of climatic data needed to assess the thermal and moisture performance
of buildings, building elements or technical building systems [like wind, temperature,
moisture and long-wave (thermal) radiation] are to be obtained according to the procedures
in ISO 15927‑4. These data are listed in this document as input and passed on as output without
any conversion.
NOTE 1 The reason for passing these data via this document is to have one single and consistent
source for all EPB standards and to enable any conversion or other treatment if needed for specific application.
NOTE 2
Table 1 in the Introduction shows the relative position of this document within the set of
EPB standards in the context of the modular structure as set out in ISO 52000-1.
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