Case Study to EN ISO 52000-1 - Overarching standard - Simplified cases
The collection of simple cases covers specific impacting features about EN ISO 52000-1. The simplified cases allow to concentrate on single aspects of the standard without the noise and disturbance of the high number of parameters and the time dependence of actual cases.
The following concepts have been investigated:
- delivered energy weighting;
- exported energy weighting;
- renewable energy ratio (RER);
- application to the main generation technologies;
- the matching factor.
When drafting EN ISO 52000-1 a number of conceptual issues about energy weighting where analysed and then incorporated in the calculation methodology. An example is the evaluation of exported energy, which can be done naturally in two different ways. Since countries, in particular the EU Member States (MSs) did different choices, the calculation procedure in EN ISO 52000-1 had to include a number of parameters, such as kexp, that allow to switch the approach within the same calculation scheme.
Understanding the weighting factors is a critical step in using the set of (CEN and ISO) EPB standards as well as any other alternative energy performance calculation procedure. The weighting procedure is the interface between the building calculation and the external world. Any calculation about the building will end-up with an amount of energy carriers that are imported and exported.
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