Abstract
Conventional control strategies in variable air volume (VAV) ventilation systems do not take fully into advantage the potential energy savings since the system operation is based on maintaining a constant static pressure (CSP) set point in the main duct irrespective of the actual pressure demand. The static pressure reset (SPR) control strategy can optimize the operation of the supply air fans by adjusting the pressure set point to be just enough to deliver the required airflow to the most critical zone.
This study investigated the operation and energy savings potential of an SPR control algorithm by using the Simulink programming tool which is addon
software to MATLAB mathematical programming language. A model of a VAV ventilation system was created in Simulink based on the International Building Physics Toolbox (IBPT); the IBPT thermal zone was remodelled in order to
calculate dynamically the airflow demand according to the zone air temperature. The performance of the Simulink model was evaluated based on the experimental setup of the ventilation system. The SPR control method established stable system operation and was proven efficient to maintain comfortable space conditions while reducing by 14 % the fan energy used in a typical working day.
This study investigated the operation and energy savings potential of an SPR control algorithm by using the Simulink programming tool which is addon
software to MATLAB mathematical programming language. A model of a VAV ventilation system was created in Simulink based on the International Building Physics Toolbox (IBPT); the IBPT thermal zone was remodelled in order to
calculate dynamically the airflow demand according to the zone air temperature. The performance of the Simulink model was evaluated based on the experimental setup of the ventilation system. The SPR control method established stable system operation and was proven efficient to maintain comfortable space conditions while reducing by 14 % the fan energy used in a typical working day.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 10th Nordic Symposium on Building Physics |
| Editors | Jesper Arfvidsson, Lars-Erik Harderup, Anders Kumlin, Bitte Rosencrantz |
| Number of pages | 8 |
| Publisher | Lund University |
| Publication date | 2014 |
| Pages | 822-829 |
| Article number | 102 |
| ISBN (Electronic) | 978-91-88722-53-9 |
| Publication status | Published - 2014 |
| Event | 10th Nordic Symposium on Building Physics - Lund, Sweden Duration: 15 Jun 2014 → 19 Jun 2014 Conference number: 10 http://www.nsb2014.se/ |
Conference
| Conference | 10th Nordic Symposium on Building Physics |
|---|---|
| Number | 10 |
| Country/Territory | Sweden |
| City | Lund |
| Period | 15/06/2014 → 19/06/2014 |
| Internet address |
Keywords
- Ventilation system
- HVAC control strategy
- Variable air volume
- Static pressure reset
- Modelling
- Simulink
- Energy savings