Standard for reference climate in buildings revised

The standard NEN 5060 contains representative reference climate data for the determination of the energy performance of buildings and for the dimensioning of heating, cooling and air conditioning systems for buildings.

NEN 5060 'Hygrothermal Properties of Buildings - Reference Climate Data' contains temperature, wind, rain and solar radiation data for each hour of a notional reference year. This standard has now been improved. In particular, the section on solar radiation has been clarified.

NEN 5060 and NTA 8800

The climate data from NEN 5060 are used in NTA 8800 'Energy performance of buildings - Determination method'. The revision does not affect the outcome of the calculations via NTA 8800.

Time zone and orientation

In the 2018 version, it was not clear enough which time zone was used with the climate data. That is namely the UTC, which meant that use in the Netherlands could result in a difference of one hour (winter time) or two hours (summer time). There could also be confusion about the plus and minus signs at east or west. That is now indicated everywhere.

Solar radiation

The annex for 'Procedure for conversion of given solar radiation data to vertical and inclined planes' has been replaced by a reference to NEN-EN-ISO 52010 'Energy performance of buildings - Outdoor climate - Part 1: Conversion of climate data for energy calculations'. Only typical Dutch data such as the infill for low sun positions have remained in NEN 5060.

Learn more
For information on this standard or on the standardization process: Annet van der Horn telephone 015 2 690 286 or e-mail [email protected]. 

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