Simulated performance of a greenhouse cooling control strategy with natural ventilation and fog cooling
In addition to ventilation, daily cooling must be provided for greenhouses located in semiarid climates to maintain the desired climate conditions for year-round crop production. High-pressure fogging systems have been successfully developed for greenhouse cooling. However the lack of control strate...
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| Veröffentlicht in: | Biosystems engineering 2012-02, Vol.111 (2), p.217-228 |
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| creator | Villarreal-Guerrero, Federico Kacira, Murat Fitz-Rodríguez, Efren Linker, Raphael Kubota, Chieri Giacomelli, Gene A. Arbel, Avraham |
| description | In addition to ventilation, daily cooling must be provided for greenhouses located in semiarid climates to maintain the desired climate conditions for year-round crop production. High-pressure fogging systems have been successfully developed for greenhouse cooling. However the lack of control strategies, in combination with ventilation systems, especially passive ventilation, has limited their capabilities. A new cooling control strategy, which considered the contribution of humidification and cooling from the crop, was evaluated by computer simulations. The strategy controlled the amount of fog introduced into the greenhouse, as well as the percentage of vent openings to maintain desired values of greenhouse atmospheric vapour pressure deficit (VPD) and enthalpy, respectively, which would consequently affect air temperature. The performance was compared to constant fogging rate strategy, which was based on VPD. On average, the new strategy saved 36% water and consumed 30% less electric energy. Smaller air temperature and relative humidity fluctuations, and more consistent control, were achieved by varying the fog system operating pressure to provide a more optimum amount of fog for evaporative cooling. It was demonstrated by simulations that dynamically varying the fog rate and properly selecting the number of nozzles, savings of water and electric energy were increased, while still maintaining acceptable VPD and temperature. The improvements in the greenhouse climate achieved by the new strategy were due to its ability to dynamically manipulate fog rates, as well as, the vent configurations.
► Climate control strategy greenhouse equipped with variable high-pressure fogging system. ► Simulations evaluated temperature uniformity, energy and water savings. ► Strategy saved 36% water and 30% energy when compared to constant fogging based on VPD. ► Climate depends on strategy, and proper sizing & installation of fogging system. |
| doi_str_mv | 10.1016/j.biosystemseng.2011.11.015 |
| format | Article |
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► Climate control strategy greenhouse equipped with variable high-pressure fogging system. ► Simulations evaluated temperature uniformity, energy and water savings. ► Strategy saved 36% water and 30% energy when compared to constant fogging based on VPD. ► Climate depends on strategy, and proper sizing & installation of fogging system.</description><identifier>ISSN: 1537-5110</identifier><identifier>EISSN: 1537-5129</identifier><identifier>DOI: 10.1016/j.biosystemseng.2011.11.015</identifier><identifier>CODEN: BEINBJ</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Agricultural machinery and engineering ; Agronomy. Soil science and plant productions ; air temperature ; Biological and medical sciences ; Climate ; Computer simulation ; Cooling ; crop production ; Crops ; energy ; Fog ; Fundamental and applied biological sciences. Psychology ; Generalities. Biometrics, experimentation. Remote sensing ; Greenhouses ; natural ventilation ; nozzles ; relative humidity ; semiarid zones ; Strategy ; vapor pressure ; Ventilation</subject><ispartof>Biosystems engineering, 2012-02, Vol.111 (2), p.217-228</ispartof><rights>2011</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c414t-abdbb23b8671f7e94fc97fa786e7488a7f7fa3b86304841229f13e896522413</citedby><cites>FETCH-LOGICAL-c414t-abdbb23b8671f7e94fc97fa786e7488a7f7fa3b86304841229f13e896522413</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.biosystemseng.2011.11.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25433475$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Villarreal-Guerrero, Federico</creatorcontrib><creatorcontrib>Kacira, Murat</creatorcontrib><creatorcontrib>Fitz-Rodríguez, Efren</creatorcontrib><creatorcontrib>Linker, Raphael</creatorcontrib><creatorcontrib>Kubota, Chieri</creatorcontrib><creatorcontrib>Giacomelli, Gene A.</creatorcontrib><creatorcontrib>Arbel, Avraham</creatorcontrib><title>Simulated performance of a greenhouse cooling control strategy with natural ventilation and fog cooling</title><title>Biosystems engineering</title><description>In addition to ventilation, daily cooling must be provided for greenhouses located in semiarid climates to maintain the desired climate conditions for year-round crop production. High-pressure fogging systems have been successfully developed for greenhouse cooling. However the lack of control strategies, in combination with ventilation systems, especially passive ventilation, has limited their capabilities. A new cooling control strategy, which considered the contribution of humidification and cooling from the crop, was evaluated by computer simulations. The strategy controlled the amount of fog introduced into the greenhouse, as well as the percentage of vent openings to maintain desired values of greenhouse atmospheric vapour pressure deficit (VPD) and enthalpy, respectively, which would consequently affect air temperature. The performance was compared to constant fogging rate strategy, which was based on VPD. On average, the new strategy saved 36% water and consumed 30% less electric energy. Smaller air temperature and relative humidity fluctuations, and more consistent control, were achieved by varying the fog system operating pressure to provide a more optimum amount of fog for evaporative cooling. It was demonstrated by simulations that dynamically varying the fog rate and properly selecting the number of nozzles, savings of water and electric energy were increased, while still maintaining acceptable VPD and temperature. The improvements in the greenhouse climate achieved by the new strategy were due to its ability to dynamically manipulate fog rates, as well as, the vent configurations.
► Climate control strategy greenhouse equipped with variable high-pressure fogging system. ► Simulations evaluated temperature uniformity, energy and water savings. ► Strategy saved 36% water and 30% energy when compared to constant fogging based on VPD. ► Climate depends on strategy, and proper sizing & installation of fogging system.</description><subject>Agricultural machinery and engineering</subject><subject>Agronomy. Soil science and plant productions</subject><subject>air temperature</subject><subject>Biological and medical sciences</subject><subject>Climate</subject><subject>Computer simulation</subject><subject>Cooling</subject><subject>crop production</subject><subject>Crops</subject><subject>energy</subject><subject>Fog</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Generalities. Biometrics, experimentation. Remote sensing</subject><subject>Greenhouses</subject><subject>natural ventilation</subject><subject>nozzles</subject><subject>relative humidity</subject><subject>semiarid zones</subject><subject>Strategy</subject><subject>vapor pressure</subject><subject>Ventilation</subject><issn>1537-5110</issn><issn>1537-5129</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkVFr2zAUhcVYYV3a3zDBGOwlqWTLls2eRmi7QaEPaZ-FLF-5CraUSXJK_n1vSFvYW-HCldB3zpWOCPnO2YozXl9tV50L6ZAyTAn8sCoY5yssxqtP5JxXpVxWvGg_v685-0K-prRlSEhRn5Nh46Z51Bl6uoNoQ5y0N0CDpZoOEcA_hTkBNSGMzg_YfY5hpClH1AwH-uzyE_U6z1GPdA8-OzRzwVPte2rD8Ka8IGdWjwkuX_uCbG6uH9Z_lnf3t3_Xv--WRnCRl7rru64ou6aW3EpohTWttFo2NUjRNFpa3B2PSyYawYuitbyEpq2rohC8XJCfJ9ddDP9mSFlNLhkYR-0B36EwNNayhtcS0V8n1MSQUgSrdtFNOh4QOnK12qr_wlXHcBUWRofqH6-DdDJ6tBFTc-ndoqhEWQp55L6dOKuD0kNE5nGDRoIxJtoSsQW5PhGAqewdRJWMA_yD3kUwWfXBfehGL0awovU</recordid><startdate>20120201</startdate><enddate>20120201</enddate><creator>Villarreal-Guerrero, Federico</creator><creator>Kacira, Murat</creator><creator>Fitz-Rodríguez, Efren</creator><creator>Linker, Raphael</creator><creator>Kubota, Chieri</creator><creator>Giacomelli, Gene A.</creator><creator>Arbel, Avraham</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20120201</creationdate><title>Simulated performance of a greenhouse cooling control strategy with natural ventilation and fog cooling</title><author>Villarreal-Guerrero, Federico ; Kacira, Murat ; Fitz-Rodríguez, Efren ; Linker, Raphael ; Kubota, Chieri ; Giacomelli, Gene A. ; Arbel, Avraham</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c414t-abdbb23b8671f7e94fc97fa786e7488a7f7fa3b86304841229f13e896522413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Agricultural machinery and engineering</topic><topic>Agronomy. Soil science and plant productions</topic><topic>air temperature</topic><topic>Biological and medical sciences</topic><topic>Climate</topic><topic>Computer simulation</topic><topic>Cooling</topic><topic>crop production</topic><topic>Crops</topic><topic>energy</topic><topic>Fog</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Generalities. Biometrics, experimentation. Remote sensing</topic><topic>Greenhouses</topic><topic>natural ventilation</topic><topic>nozzles</topic><topic>relative humidity</topic><topic>semiarid zones</topic><topic>Strategy</topic><topic>vapor pressure</topic><topic>Ventilation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Villarreal-Guerrero, Federico</creatorcontrib><creatorcontrib>Kacira, Murat</creatorcontrib><creatorcontrib>Fitz-Rodríguez, Efren</creatorcontrib><creatorcontrib>Linker, Raphael</creatorcontrib><creatorcontrib>Kubota, Chieri</creatorcontrib><creatorcontrib>Giacomelli, Gene A.</creatorcontrib><creatorcontrib>Arbel, Avraham</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Biosystems engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Villarreal-Guerrero, Federico</au><au>Kacira, Murat</au><au>Fitz-Rodríguez, Efren</au><au>Linker, Raphael</au><au>Kubota, Chieri</au><au>Giacomelli, Gene A.</au><au>Arbel, Avraham</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Simulated performance of a greenhouse cooling control strategy with natural ventilation and fog cooling</atitle><jtitle>Biosystems engineering</jtitle><date>2012-02-01</date><risdate>2012</risdate><volume>111</volume><issue>2</issue><spage>217</spage><epage>228</epage><pages>217-228</pages><issn>1537-5110</issn><eissn>1537-5129</eissn><coden>BEINBJ</coden><abstract>In addition to ventilation, daily cooling must be provided for greenhouses located in semiarid climates to maintain the desired climate conditions for year-round crop production. High-pressure fogging systems have been successfully developed for greenhouse cooling. However the lack of control strategies, in combination with ventilation systems, especially passive ventilation, has limited their capabilities. A new cooling control strategy, which considered the contribution of humidification and cooling from the crop, was evaluated by computer simulations. The strategy controlled the amount of fog introduced into the greenhouse, as well as the percentage of vent openings to maintain desired values of greenhouse atmospheric vapour pressure deficit (VPD) and enthalpy, respectively, which would consequently affect air temperature. The performance was compared to constant fogging rate strategy, which was based on VPD. On average, the new strategy saved 36% water and consumed 30% less electric energy. Smaller air temperature and relative humidity fluctuations, and more consistent control, were achieved by varying the fog system operating pressure to provide a more optimum amount of fog for evaporative cooling. It was demonstrated by simulations that dynamically varying the fog rate and properly selecting the number of nozzles, savings of water and electric energy were increased, while still maintaining acceptable VPD and temperature. The improvements in the greenhouse climate achieved by the new strategy were due to its ability to dynamically manipulate fog rates, as well as, the vent configurations.
► Climate control strategy greenhouse equipped with variable high-pressure fogging system. ► Simulations evaluated temperature uniformity, energy and water savings. ► Strategy saved 36% water and 30% energy when compared to constant fogging based on VPD. ► Climate depends on strategy, and proper sizing & installation of fogging system.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.biosystemseng.2011.11.015</doi><tpages>12</tpages></addata></record> |
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| subjects | Agricultural machinery and engineering Agronomy. Soil science and plant productions air temperature Biological and medical sciences Climate Computer simulation Cooling crop production Crops energy Fog Fundamental and applied biological sciences. Psychology Generalities. Biometrics, experimentation. Remote sensing Greenhouses natural ventilation nozzles relative humidity semiarid zones Strategy vapor pressure Ventilation |
| title | Simulated performance of a greenhouse cooling control strategy with natural ventilation and fog cooling |
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