[New Standard] CEN ISO 52016-3 Adaptive Building Elements)

Another milestone was achieved with the development of the CEN 🧧 ISO 52016-3 Calculation procedures regarding 🏢 Adaptive Building Elements. The votings in 🌍 ISO and CEN on the prEN / DIS 52016-3 were positive. Most 😐 comments have, in the meantime, been dealt with, both in the form of “secretary observations” (responses to the comments and suggestions plus late-arrived comments). The new draft standard is part of the (EN) ISO 52000 family 👨‍👩‍👧‍👦 of standards. Now, we are ready to work on the final version before getting the standard approved and published by April 2023.

Under the leadership of Mr. Dick van Dijk from EPB-research - Delft, The Netherlands 🇳🇱, this standard has been developed since 2019 as a follow-up of the COST Action 1403 on Adaptive Facades. More than 15 active members 🤹 have worked on developing this standard, including Herve Lamy, Vincenzo Corrado, Fabio Favoino, Anne Minne, Gerhard Zweifel, and Robert MARSHALL. Our lab, the SBD Lab members ( Alireza Norouziasas, Aurora Luigia Teresa Bertini, and Shady Attia), represent the Belgian Bureau of standardization (NBN) 🇧🇪 and conducted several 👁️‍🗨️ calculations and 🤯 tests to test different 🔎 control strategies for different adaptive facade technologies. We will be representing Belgium with a large consortium of 19 European countries.

For further 📣 reading, please check this article 📄: https://lnkd.in/e6MRfshw

The standard draft is available from: https://lnkd.in/eeiHAHfV

After getting our new standard published, our dream will be to link the ISO 52016-3 with the 🏬 Energy Performance of Buildings Directive (EPBD). The European Commission’s 🇪🇺 proposal for the EPBD revision, published in December 2021, clearly reinforces the Smart Readiness Indicator in the new EPBD requirements and 🏬 calculation method.

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prEN ISO/DIS 52016-3 specifies procedures for the calculation of 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 EN ISO 52016-1, with additions or modifications of the calculations 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 EN ISO 52016-1.

The aim of adaptive building envelope elements is to improve the energy performance and/or comfort in the building under varying outdoor conditions (weather, season), indoor conditions (e.g., internal heat gains), and user needs.

Examples of adaptive building envelopes are products or assemblies with one or more of the following features:

• movable blinds,

• controllable vents,

• switchable glazing,

• movable thermally insulating shutters,

• PV integrated glazing (leading to variable total (thermal) solar energy transmittance),

• double skin facades.

The input data for the calculation are the thermal, solar, and visual properties of the building element for the different states (e.g., from open to closed, from dark to light, and combinations of these), and in case of gradually varying properties: for many representative discrete states.

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 document applies to the assessment of the energy performance of buildings (energy performance labels and certificates), including comparing buildings and checking compliance with minimum energy performance criteria.

The document is also applicable to assess the contribution of the adaptive building envelope element to the smartness readiness of a building.

In addition, this document provides indicators for the impact of the adaptive building envelope element on the performance of the building compared to a reference building envelope element.

This document applies to buildings at the design stage, new buildings after construction, and existing buildings in the use phase.