Abstract
Air supply diffusers used in air-conditioning systems can be classified as ceiling diffusers, side-wall diffusers, floor diffusers, jet nozzles, and low velocity displacement diffusers. Fixed or adjustable slats are usually used to control airflow directions. Recently, swirling vanes are used in floor diffusers to create swirling out-flow jet, so that more rapid mixing with ambient air can be achieved. the latest CFD technique to investigate the impact of these different designs on thermal comfort in the near nozzle region is used, in view of the increasing application of floor-level air supply systems. The preliminary simulation results indicate that raising air supply temperature from 18°C to 22°C or reducing the air supply velocity from 1.5 m/s to 1.0 m/s, can provide better thermal comfort in terms of thermal field uniformity. The results was further validated with experiments, and the method can be used to optimize diffuser designs.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 2003 - 4th International Symposium on Heating, Ventilating and Airconditioning |
| Pages | 205-209 |
| Number of pages | 5 |
| Publication status | Published - 1 Dec 2003 |
| Event | Proceeding of the 2003 4th International Symposium on Heating, Ventilating and Air Conditioning - Beijing, China Duration: 9 Oct 2003 → 11 Oct 2003 |
Conference
| Conference | Proceeding of the 2003 4th International Symposium on Heating, Ventilating and Air Conditioning |
|---|---|
| Country/Territory | China |
| City | Beijing |
| Period | 9/10/03 → 11/10/03 |
Keywords
- Air distribution
- CFD simulation
- Underfloor air supply
ASJC Scopus subject areas
- Engineering(all)