CASE33 · Buildings · BEMS/BPOS diagnostic design
Designing a BEMS management model around capacity, operating time and efficiency
An end-use hierarchy links building demand and supply to equipment, management variables and operating guidance, turning consumption displays into a repeatable diagnostic process.
01 · CASE ANALYSIS
Management objective
Separate heating, cooling, ventilation, lighting, plug loads, hot water, cooking/process and vertical transportation. Map electricity and fuel/heat supply to these demands.
The model is intended to explain why energy is used and which variables operators can manage.
02 · CASE ANALYSIS
Diagnostic hierarchy
Classify end uses, map consuming equipment, define capacity/time/equipment-efficiency/operating-efficiency variables, analyze actual states and maintain improvement actions.
The capacity–time–efficiency breakdown is an engineering organizing model, not a calibrated statistical baseline with a published fit score.
| Side | Energy areas |
|---|---|
| Demand | Heating, cooling, ventilation |
| Demand | Lighting and office/plug equipment |
| Demand | Hot water, cooking and process |
| Demand | Vertical transportation |
| Supply | Grid and other electricity sources |
| Supply | LNG, LPG, oil and other heat/fuel sources |
03 · CASE ANALYSIS
Equipment-level management
Heating and cooling require pump and plant schedules, equipment performance and dispatch efficiency. Ventilation, lighting and plug loads require operating-time and efficiency management.
Elevators, hot-water equipment and process/support machines additionally require explicit capacity review.
04 · CASE ANALYSIS
From monitoring to action
Use the hierarchy to define BEMS/BPOS menus, meter points, trends and operating alerts. Investigate unnecessary operation, excessive service and low efficiency.
The source does not state a measured project-wide savings rate; the outcome is a diagnosis and management design.
| Equipment group | Principal variables |
|---|---|
| Pumps, boilers, chillers and towers | Operating time; equipment and operating efficiency |
| Fans, lights and plug equipment | Operating time; equipment and operating efficiency |
| Elevators, hot-water and process equipment | Capacity; operating time; equipment and operating efficiency |
05 · CASE ANALYSIS
Verification and transfer
Define measurement boundaries and normalize for weather, occupancy and service demand when measures are implemented. Compare actual use with the adjusted baseline.
A dashboard becomes useful when each indicator has an equipment owner, a diagnostic question and an appropriate operating action.
APPLY TO YOUR SITE
Connect your operating data to an actionable energy strategy.
Discuss the measurement boundary, data quality, operating constraints and verification approach for your facility.
Discuss your project All English cases