Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions
Ventilation is one of the methods used to obtain the biological optimal point of environmental factors needed for the plants in greenhouses. In the greenhouses, air change coefficient must be more than 50 h-1 in order to supply effective air ventilation. Temperature differences like air change coeff...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Turkish Science and Technology Publishing (TURSTEP)
2017-04-01
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| Series: | Turkish Journal of Agriculture: Food Science and Technology |
| Subjects: | |
| Online Access: | http://www.agrifoodscience.com/index.php/TURJAF/article/view/1042 |
| _version_ | 1797921420541427712 |
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| author | Abdullah Nafi Baytorun Sait Üstün Adil Akyüz Derya Önder |
| author_facet | Abdullah Nafi Baytorun Sait Üstün Adil Akyüz Derya Önder |
| author_sort | Abdullah Nafi Baytorun |
| collection | DOAJ |
| description | Ventilation is one of the methods used to obtain the biological optimal point of environmental factors needed for the plants in greenhouses. In the greenhouses, air change coefficient must be more than 50 h-1 in order to supply effective air ventilation. Temperature differences like air change coefficient can be regarded as a criterion to determine efficiency of ventilation in the greenhouses. In this study, the temperature values were calculated by using energy balance and Bernoulli equation at different ventilation opening ratios (AV/AG) depending on climatic properties in the Mediterranean region (Antalya). If was found that, based on temperature and radiation values of Antalya province, 20% ventilation opening rate is sufficient in the roof area. A temperature difference (∆T) of 1K can be achieved with a 50% shading of radiation and a 20% ventilation opening in June in the Mediterranean region. However, additional cooling is necessary in the greenhouses around noon hours because outdoor temperature is greater than 30°C. |
| first_indexed | 2024-04-10T14:16:48Z |
| format | Article |
| id | doaj.art-af3c3cd92e8b4260af3c4d56146d0a5e |
| institution | Directory Open Access Journal |
| issn | 2148-127X |
| language | English |
| last_indexed | 2024-04-10T14:16:48Z |
| publishDate | 2017-04-01 |
| publisher | Turkish Science and Technology Publishing (TURSTEP) |
| record_format | Article |
| series | Turkish Journal of Agriculture: Food Science and Technology |
| spelling | doaj.art-af3c3cd92e8b4260af3c4d56146d0a5e2023-02-15T16:09:32ZengTurkish Science and Technology Publishing (TURSTEP)Turkish Journal of Agriculture: Food Science and Technology2148-127X2017-04-015440941510.24925/turjaf.v5i4.409-415.1042515Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate ConditionsAbdullah Nafi Baytorun0Sait Üstün1Adil Akyüz2Derya Önder3Çukurova Üniversitesi, Ziraat Fakültesi, Tarımsal Yapılar ve Sulama Bölümü, 01250 AdanaKahramanmaraş Sütçü İmam Üniversitesi, Ziraat Fakültesi, Biyosistem Mühendisliği Bölümü, 46040 KahramanmaraşKahramanmaraş Sütçü İmam Üniversitesi, Ziraat Fakültesi, Biyosistem Mühendisliği Bölümü, 46040 KahramanmaraşÇukurova Üniversitesi, Ziraat Fakültesi, Tarımsal Yapılar ve Sulama Bölümü, 01250 AdanaVentilation is one of the methods used to obtain the biological optimal point of environmental factors needed for the plants in greenhouses. In the greenhouses, air change coefficient must be more than 50 h-1 in order to supply effective air ventilation. Temperature differences like air change coefficient can be regarded as a criterion to determine efficiency of ventilation in the greenhouses. In this study, the temperature values were calculated by using energy balance and Bernoulli equation at different ventilation opening ratios (AV/AG) depending on climatic properties in the Mediterranean region (Antalya). If was found that, based on temperature and radiation values of Antalya province, 20% ventilation opening rate is sufficient in the roof area. A temperature difference (∆T) of 1K can be achieved with a 50% shading of radiation and a 20% ventilation opening in June in the Mediterranean region. However, additional cooling is necessary in the greenhouses around noon hours because outdoor temperature is greater than 30°C.http://www.agrifoodscience.com/index.php/TURJAF/article/view/1042SeraDoğal havalandırmaHava değişim katsayısıGölgeleme |
| spellingShingle | Abdullah Nafi Baytorun Sait Üstün Adil Akyüz Derya Önder Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions Turkish Journal of Agriculture: Food Science and Technology Sera Doğal havalandırma Hava değişim katsayısı Gölgeleme |
| title | Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions |
| title_full | Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions |
| title_fullStr | Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions |
| title_full_unstemmed | Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions |
| title_short | Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions |
| title_sort | determination of ventilation openings ratio in greenhouses under mediterranean climate conditions |
| topic | Sera Doğal havalandırma Hava değişim katsayısı Gölgeleme |
| url | http://www.agrifoodscience.com/index.php/TURJAF/article/view/1042 |
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