Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode
The performance of a newly designed corner impinging jet air distribution method with an equilateral triangle cross section was evaluated experimentally and compared to that of two more traditional methods (mixing and displacement ventilation). At nine evenly chosen positions with four standard vert...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-04-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/12/7/1354 |
| _version_ | 1798040336934633472 |
|---|---|
| author | Arman Ameen Mathias Cehlin Ulf Larsson Taghi Karimipanah |
| author_facet | Arman Ameen Mathias Cehlin Ulf Larsson Taghi Karimipanah |
| author_sort | Arman Ameen |
| collection | DOAJ |
| description | The performance of a newly designed corner impinging jet air distribution method with an equilateral triangle cross section was evaluated experimentally and compared to that of two more traditional methods (mixing and displacement ventilation). At nine evenly chosen positions with four standard vertical points, air velocity, turbulence intensity, temperature, and tracer gas decay measurements were conducted for all systems. The results show that the new method behaves as a displacement ventilation system, with high air change effectiveness and stratified flow pattern and temperature field. Both local air change effectiveness and air exchange effectiveness of the corner impinging jet showed high quality and promising results, which is a good indicator of ventilation effectiveness. The results also indicate that there is a possibility to slightly lower the airflow rates for the new air distribution system, while still meeting the requirements for thermal comfort and indoor air quality, thereby reducing fan energy usage. The draught rate was also lower for corner impinging jet compared to the other tested air distribution methods. The findings of this research show that the corner impinging jet method can be used for office ventilation. |
| first_indexed | 2024-04-11T22:06:12Z |
| format | Article |
| id | doaj.art-8bff28a6ac38452f8f151233beb3a54b |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:06:12Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8bff28a6ac38452f8f151233beb3a54b2022-12-22T04:00:43ZengMDPI AGEnergies1996-10732019-04-01127135410.3390/en12071354en12071354Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling ModeArman Ameen0Mathias Cehlin1Ulf Larsson2Taghi Karimipanah3Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, SwedenDepartment of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, SwedenDepartment of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, SwedenDepartment of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, SwedenThe performance of a newly designed corner impinging jet air distribution method with an equilateral triangle cross section was evaluated experimentally and compared to that of two more traditional methods (mixing and displacement ventilation). At nine evenly chosen positions with four standard vertical points, air velocity, turbulence intensity, temperature, and tracer gas decay measurements were conducted for all systems. The results show that the new method behaves as a displacement ventilation system, with high air change effectiveness and stratified flow pattern and temperature field. Both local air change effectiveness and air exchange effectiveness of the corner impinging jet showed high quality and promising results, which is a good indicator of ventilation effectiveness. The results also indicate that there is a possibility to slightly lower the airflow rates for the new air distribution system, while still meeting the requirements for thermal comfort and indoor air quality, thereby reducing fan energy usage. The draught rate was also lower for corner impinging jet compared to the other tested air distribution methods. The findings of this research show that the corner impinging jet method can be used for office ventilation.https://www.mdpi.com/1996-1073/12/7/1354corner impinging jetmixing ventilationdisplacement ventilationtracer gasair exchange effectivenesslocal air change effectivenessdraught rate |
| spellingShingle | Arman Ameen Mathias Cehlin Ulf Larsson Taghi Karimipanah Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode Energies corner impinging jet mixing ventilation displacement ventilation tracer gas air exchange effectiveness local air change effectiveness draught rate |
| title | Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode |
| title_full | Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode |
| title_fullStr | Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode |
| title_full_unstemmed | Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode |
| title_short | Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode |
| title_sort | experimental investigation of the ventilation performance of different air distribution systems in an office environment cooling mode |
| topic | corner impinging jet mixing ventilation displacement ventilation tracer gas air exchange effectiveness local air change effectiveness draught rate |
| url | https://www.mdpi.com/1996-1073/12/7/1354 |
| work_keys_str_mv | AT armanameen experimentalinvestigationoftheventilationperformanceofdifferentairdistributionsystemsinanofficeenvironmentcoolingmode AT mathiascehlin experimentalinvestigationoftheventilationperformanceofdifferentairdistributionsystemsinanofficeenvironmentcoolingmode AT ulflarsson experimentalinvestigationoftheventilationperformanceofdifferentairdistributionsystemsinanofficeenvironmentcoolingmode AT taghikarimipanah experimentalinvestigationoftheventilationperformanceofdifferentairdistributionsystemsinanofficeenvironmentcoolingmode |