Abstract
This paper presents an experimental analysis on night ventilation with wall-attached jet system. In this night ventilation scheme, wall jet is generated by the induced cool outdoor air flowing downward over the inner surface of concrete wall. Full-scale experiments have been performed to study the cooling effect of night ventilation system in Chongqing, China. The velocity gradient of the air curtain in the near wall region is measured. Obvious decline of inner wall surface temperature and room air temperature is observed at the moment when ventilation starts. The wall surface cooling efficiency index and room air distribution efficiency index are defined and calculated. The experimental results reveal that high momentum of wall jet contributes to the cooling effect of walls and room air.
| Original language | English |
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| Title of host publication | PROCEEDINGS — Roomvent & Ventilation 2018 : Excellent Indoor Climate and High Performing Ventilation |
| Editors | Risto Kosonen, Mervi Ahola, Jarkko Narvanne |
| Place of Publication | Helsinki |
| Publisher | SIY Indoor Air Information Oy |
| Publication date | 2018 |
| Pages | 433-438 |
| ISBN (Electronic) | 978-952-5236-48-4 |
| Publication status | Published - 2018 |
| Event | Roomvent 2018: International Conference on Air Distribution in Rooms - Aalto University, ,Finland, Espoo, Finland Duration: 2 Jun 2018 → 5 Jun 2018 https://roomventilation2018.org/ |
Conference
| Conference | Roomvent 2018 |
|---|---|
| Location | Aalto University, ,Finland |
| Country/Territory | Finland |
| City | Espoo |
| Period | 02/06/2018 → 05/06/2018 |
| Internet address |
Bibliographical note
Track 3 – Energy and Ventilation: Energy Performance of Buildings (EPB1)Keywords
- Night ventilation
- Air jet
- Cooling efficiency