Sonic Anemometry to Measure Natural Ventilation in Greenhouses
The present work has developed a methodology for studying natural ventilation in Mediterranean greenhouses by means of sonic anemometry. In addition, specific calculation programmes have been designed to enable processing and analysis of the data recorded during the experiments. Sonic anemometry all...
| Main Authors: | , , |
|---|---|
| Format: | info:eu-repo/semantics/article |
| Language: | English |
| Published: |
MDPI
2020
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10835/7687 |
| _version_ | 1789406520695324672 |
|---|---|
| author | López Martínez, Alejandro Valera Martínez, Diego Luis Molina Aiz, Francisco Domingo |
| author_facet | López Martínez, Alejandro Valera Martínez, Diego Luis Molina Aiz, Francisco Domingo |
| author_sort | López Martínez, Alejandro |
| collection | DSpace |
| description | The present work has developed a methodology for studying natural ventilation in Mediterranean greenhouses by means of sonic anemometry. In addition, specific calculation programmes have been designed to enable processing and analysis of the data recorded during the experiments. Sonic anemometry allows us to study the direction of the airflow at all the greenhouse vents. Knowing through which vents the air enters and leaves the greenhouse enables us to establish the airflow pattern of the greenhouse under natural ventilation conditions. In the greenhouse analysed in this work for Poniente wind (from the southwest), a roof vent designed to open towards the North (leeward) could allow a positive interaction between the wind and stack effects, improving the ventilation capacity of the greenhouse. The cooling effect produced by the mass of turbulent air oscillating between inside and outside the greenhouse at the side vents was limited to 2% (for high wind speed, uo ≥ 4 m s−1) reaching 36.3% when wind speed was lower (uo = 2 m s−1). |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-7687 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2020 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-76872023-04-12T19:31:08Z Sonic Anemometry to Measure Natural Ventilation in Greenhouses López Martínez, Alejandro Valera Martínez, Diego Luis Molina Aiz, Francisco Domingo sonic anemometry greenhouse ventilation insect-proof screens The present work has developed a methodology for studying natural ventilation in Mediterranean greenhouses by means of sonic anemometry. In addition, specific calculation programmes have been designed to enable processing and analysis of the data recorded during the experiments. Sonic anemometry allows us to study the direction of the airflow at all the greenhouse vents. Knowing through which vents the air enters and leaves the greenhouse enables us to establish the airflow pattern of the greenhouse under natural ventilation conditions. In the greenhouse analysed in this work for Poniente wind (from the southwest), a roof vent designed to open towards the North (leeward) could allow a positive interaction between the wind and stack effects, improving the ventilation capacity of the greenhouse. The cooling effect produced by the mass of turbulent air oscillating between inside and outside the greenhouse at the side vents was limited to 2% (for high wind speed, uo ≥ 4 m s−1) reaching 36.3% when wind speed was lower (uo = 2 m s−1). 2020-01-28T10:33:01Z 2020-01-28T10:33:01Z 2011-10-19 info:eu-repo/semantics/article 1424-8220 http://hdl.handle.net/10835/7687 en https://www.mdpi.com/1424-8220/11/10/9820 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI |
| spellingShingle | sonic anemometry greenhouse ventilation insect-proof screens López Martínez, Alejandro Valera Martínez, Diego Luis Molina Aiz, Francisco Domingo Sonic Anemometry to Measure Natural Ventilation in Greenhouses |
| title | Sonic Anemometry to Measure Natural Ventilation in Greenhouses |
| title_full | Sonic Anemometry to Measure Natural Ventilation in Greenhouses |
| title_fullStr | Sonic Anemometry to Measure Natural Ventilation in Greenhouses |
| title_full_unstemmed | Sonic Anemometry to Measure Natural Ventilation in Greenhouses |
| title_short | Sonic Anemometry to Measure Natural Ventilation in Greenhouses |
| title_sort | sonic anemometry to measure natural ventilation in greenhouses |
| topic | sonic anemometry greenhouse ventilation insect-proof screens |
| url | http://hdl.handle.net/10835/7687 |
| work_keys_str_mv | AT lopezmartinezalejandro sonicanemometrytomeasurenaturalventilationingreenhouses AT valeramartinezdiegoluis sonicanemometrytomeasurenaturalventilationingreenhouses AT molinaaizfranciscodomingo sonicanemometrytomeasurenaturalventilationingreenhouses |