Overview
ISO/TR 52127-2:2021 is a Technical Report that explains and justifies ISO 52127-1 (the EPB module for Building management systems). It consolidates informative material to support correct understanding, national adoption and practical application of the ISO 52127 series on energy performance of buildings, with a focus on building automation, controls and building management (BAC/TBM). As an informative companion to the normative standard, this TR collects rationale, method descriptions and implementation guidance without adding new normative requirements.
Key topics and technical content
- Purpose: Clarifies how to apply the methods in ISO 52127-1 for detailed energy performance analysis when information about automation, control and management functions is available.
- Normative references: Links explicitly to ISO 52127-1, ISO 52000-1 (EPB framework) and ISO 7345 (terms/quantities).
- Method description:
- Role of Building Automation and Control (BAC) and Technical Building Management (TBM) in balancing occupant comfort and minimizing energy use.
- Three control characteristics: control accuracy, control function, control strategy.
- Emphasis on demand‑oriented control (orchestration from emission → distribution → storage → generation).
- Functions covered (BMS functions):
- Setpoint management
- Runtime management
- Sequencing of multiple generators (including mixed technologies and renewables)
- Local energy production and renewable energies
- Heat recovery and heat shifting
- Smart grid interactions and peak shaving
- Time-step compatibility: Method supports yearly, monthly, hourly and BIN statistical approaches; normally designed for monthly or hourly inputs.
- Rationale and application scope: Intended for holistic EPB calculations when detailed BAC/TBM data are known; assumes availability of a compatible EPB calculation method.
- Supporting material: Information on an accompanying spreadsheet and guidance on data input and simplified inputs.
Practical applications and intended users
This Technical Report is useful for:
- Energy modelers and building simulation engineers who need to quantify BAC/TBM effects on energy performance.
- BMS integrators and controls engineers implementing demand‑oriented strategies, sequencing and smart‑grid interactions.
- Building designers and HVAC consultants specifying control strategies (optimum start/stop, interlock, timers).
- Certification bodies, policy makers and standards developers adopting ISO 52127-1 into national EPB frameworks.
- Facility managers and technical building managers aiming to optimize comfort vs. energy use through automation.
Related standards
- ISO 52127-1 - Module M10‑12 (normative companion)
- ISO 52000-1 - EPB overarching framework and procedures
- ISO 7345 - Thermal insulation definitions
- EN standards referenced for control functions (e.g., optimum start/stop, timer)
Keywords: ISO/TR 52127-2:2021, ISO 52127-1, building automation, building management system, BAC, TBM, energy performance of buildings, demand-oriented control, sequencing multiple generators, smart grid, peak shaving.
Open preview (PDF)Energy performance of buildings — Building automation, controls and building management — Part 2: Explanation and justification of ISO 52127-1