ISO/CEN 52016-3 (2023) Energy performance of buildings - Energy needs for heating and cooling, internal temperatures and sensible and latent heat loads - Part 3: Calculation procedures regarding adaptive building envelope elements

This document specifies procedures for calculating the energy needs for heating and cooling, internal temperatures and sensible and latent heat loads of a building according to the hourly calculation methodology in ISO 52016-1. Additions or modifications of the calculations are provided in this document if the building envelope contains one or more adaptive building envelope elements (building envelope elements with adaptive components that are either environmentally or actively controlled as a function of specific conditions). The adaptive building envelope element replaces the transparent building element in the calculation according to ISO 52016-1.
The three types of adaptive building envelope elements covered in this document are:
— building envelope elements with dynamic solar shading;
— building envelope elements with chromogenic glazing;
— building envelope elements with an actively ventilated cavity.
Environmentally activated control is described for building envelope elements with chromogenic glazing but can also occur for other types of adaptive building envelope elements. In that case, the same approach applies to environmentally activated chromogenic glazing. This standard applies to the assessment of the energy performance of buildings (EPB) (energy performance labels and certificates), including comparison between buildings and checking conformity with minimum energy performance criteria.
It is also applicable to assess the contribution of the adaptive building envelope element to the smart readiness of a building.