Overview
SIST EN ISO 52017-1:2017 establishes standardized generic calculation procedures for assessing the energy performance of buildings-specifically, the calculation of sensible and latent heat loads and internal temperatures. Developed by the Slovenski inštitut za standardizacijo (SIST) in alignment with ISO and CEN, this standard supports the determination of internal temperatures and heating, cooling, humidification, and dehumidification loads under transient (hourly or subhourly) conditions. It provides a framework for evaluating the energy use and thermal behavior of single building zones, playing a key role in fulfilling the requirements of the EU Energy Performance of Buildings Directive (EPBD).
Key Topics
- Transient Calculation Methods: Provides procedures for calculating internal temperatures (air and operative), as well as heating, cooling, humidification, and dehumidification loads over fine-grained time intervals.
- Generic Framework: Specifies general assumptions, boundary conditions, and equations but does not impose particular numerical techniques-ensuring adaptability for different simulation tools and country-level regulations.
- Building Zone Focus: Targets single-zone calculations, enabling accurate thermal performance assessment in both residential and commercial buildings.
- Harmonized Terminology and Data Structure: Aligns with other EPB standards and ensures consistency, clarity, and transparency in energy performance evaluations.
- Support for National and Regional Regulations: Allows for the integration of normative templates and informative default choices, ensuring flexibility to meet local legislative needs.
Applications
SIST EN ISO 52017-1:2017 is widely relevant to multiple stakeholders involved in building energy analysis and optimization, including architects, engineers, policymakers, and regulators. Its primary applications include:
- Thermal Comfort Assessment: Evaluate risk of overheating or underheating and optimize internal climates for occupant well-being.
- Design Optimization: Guide the design of building envelopes, glazing, and HVAC systems for improved energy efficiency and indoor climate control.
- Regulatory Compliance and Certification: Provide essential input for national and EU-wide building energy certification schemes, supporting the requirements of the EPBD.
- Energy Needs Calculation: Form the basis for determining energy demand for heating, cooling, humidification, and dehumidification, essential for system sizing and cost estimation.
- Support for Simulation Tools: Serve as a reference for the development and validation of dynamic simulation software used in building performance analysis.
Related Standards
SIST EN ISO 52017-1:2017 is part of a robust suite of energy performance of buildings (EPB) standards, offering interoperability and consistency across the building sector. Key related standards include:
- ISO 52016-1: Delivers specific calculation procedures, built upon the generic framework in ISO 52017-1, for evaluating energy needs for heating, cooling, and air humidity control.
- ISO 52000-1: Provides the overarching framework and general procedures for integrated energy performance assessment.
- ISO 13370: Details methods for calculating heat transfer via the ground, essential for accurate thermal performance simulation.
- ISO 52010-1: Covers conversion and use of climatic data essential for building energy calculations.
- Superseded Standards: This document replaces EN 15255, EN 15265, ISO 13791, and ISO 13792, ensuring greater harmonization with current methodologies and regulatory requirements.
Practical Value
By following SIST EN ISO 52017-1:2017, professionals can achieve reliable and harmonized calculation of internal temperatures and heat loads-foundational for energy-efficient building design, regulatory compliance, and comfort-driven architecture. Its flexible, modular approach ensures compatibility with evolving national and international standards, enabling users to adapt methodologies to unique climates, building types, and legal contexts. This standard thus supports the global drive for improved building energy efficiency, indoor environmental quality, and sustainable construction practices.