ISO/TR 52016-4:2024 PDF

ISO/TR 52016-4:2024 - Overview

ISO/TR 52016-4:2024 is a Technical Report that provides detailed explanation and justification to support the correct understanding and application of ISO 52016-3. It accompanies the ISO 52016 series on the energy performance of buildings-specifically the calculation of energy needs for heating and cooling, internal temperatures, and sensible and latent heat loads. This report clarifies method intent, input choices, modelling assumptions and post-processing needed to implement ISO 52016-3 consistently in building energy assessments.

Key topics and technical content

The report expands on the methods and requirements in ISO 52016-3 and includes:

• Description of the method: outputs, successive calculation steps, and distinction between ISO 52016-3 and ISO 52016-1.
• Adaptive building envelope elements: modelling approaches for dynamic solar shading, chromogenic glazing, and actively ventilated cavities, plus types not covered.
• Control scenarios: reference and user-behaviour control strategies, sensor selection, event identification and modelling of control logic.
• Calculation method: hourly procedures, required input data (climatic, control-related, physical constants), and connection to the thermal zone model of ISO 52016-1.
• Post-processing & performance metrics: thermal comfort score, statistics on adaptive element states, and performance characteristics.
• Quality control, conformity checks and validation: guidance on verifying correct implementation and worked examples with spreadsheet tools.
• Informative annexes: templates and default choices for input data, reference control scenarios, and an hourly thermal balance model.

Practical applications and intended users

ISO/TR 52016-4 is intended for professionals and organizations who need to apply or implement ISO 52016-3 in practice, including:

• Building energy modelers and simulation software developers
• HVAC and façade engineers designing dynamic shading or glazing systems
• Energy assessors, consultants and certifiers conducting compliance checks
• Researchers validating adaptive envelope models and control strategies
• Policy makers and standardization bodies aligning regulations with consistent calculation methods

Benefits include improved consistency in modelling adaptive façade technologies, clearer guidance for input selection, and reproducible performance metrics for heating/cooling energy needs and thermal comfort.

Related standards

• ISO 52016 series (notably ISO 52016-1 and ISO 52016-3) - hourly thermal balance and adaptive envelope modelling
• Work prepared by ISO/TC 163 (Thermal performance and energy use in the built environment) in collaboration with CEN/TC 89

Keywords: ISO/TR 52016-4:2024, ISO 52016-3, energy performance of buildings, energy needs for heating and cooling, adaptive building envelope, dynamic solar shading, chromogenic glazing, thermal comfort, hourly calculation.