The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River
In order to study the chemical clogging and its effect on hydraulic performance of trickle irrigation system, four treatments includes compensating emitters (Netafim and Micro-Flapper), non-compensating emitters (Mehr and Goldani), three treatment of flow rates that includes 8, 4 and 2 lph (liters p...
| Main Authors: | , , |
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| Format: | Article |
| Language: | fas |
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Shahid Chamran University of Ahvaz
2015-11-01
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| Series: | علوم و مهندسی آبیاری |
| Subjects: | |
| Online Access: | http://jise.scu.ac.ir/article_11476_b90f2bc3a2456748302c467e21a90f45.pdf |
| _version_ | 1819158350893416448 |
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| author | Omid Karami Abdolrahim Hooshmand Saeid BoroomandNasab |
| author_facet | Omid Karami Abdolrahim Hooshmand Saeid BoroomandNasab |
| author_sort | Omid Karami |
| collection | DOAJ |
| description | In order to study the chemical clogging and its effect on hydraulic performance of trickle irrigation system, four treatments includes compensating emitters (Netafim and Micro-Flapper), non-compensating emitters (Mehr and Goldani), three treatment of flow rates that includes 8, 4 and 2 lph (liters per hour) were selected and tested using Karoun river’s water in No. 1 research farm of Shahid Chamran University of Ahvaz. The experiment was conducted in a Completely Randomized Block Design (CRBD) and irrigation was performed in 31 times with irrigation frequency for two days, at pressure of 1.5 bar. The results showed that decreasing of flow rate of Micro-Flapper emitter with 8 and 4 LPH flows is higher than the other treatments and this decreasing is significante at the five percent. Also the Micro-Flapper emitter with 2 lph flows has the lowest decreasing of flow rate. Based on field observations, herniation of silicon diaphragm that used in Micro-Flapper emitters with 8 and 4 lph flows is the main reason for the reduction of flow rate and high values of CV, q<sub>var </sub>and q<sub>d</sub>. So in this particular case the Chemical sediment did not impose a major effect. Turbulent regime of water at the outlet is the reason of resistance against the chemical clogging in the Micro-Flapper emitter with 2 lph flows. In Netafim emitter with 8 and 4 lph, despite having the significant clogging in five percent signification level have a minimal values of CV, q<sub>var</sub> and q<sub>d</sub> and high values of EU and CU. In this experiments, the treatment which had the lowest coefficient of manufacturing Variation, was accounted to it the lowest coefficient of variation of flow rate and the highest Emission Uniformity of variation. In most treatments during the Irrigation, values of CV, q<sub>var</sub> and q<sub>d </sub>increased and values of EU and CU decreased. According to the results presented, the Goldani emitter with 8 gph flows is rated and selected as the top emitter in both terms of resistance against the chemical clogging and hydraulic performance parameters than other emitters. |
| first_indexed | 2024-12-22T16:23:16Z |
| format | Article |
| id | doaj.art-f45c3cc2ba6349c2b47a1187ab516af1 |
| institution | Directory Open Access Journal |
| issn | 2588-5952 2588-5960 |
| language | fas |
| last_indexed | 2024-12-22T16:23:16Z |
| publishDate | 2015-11-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | علوم و مهندسی آبیاری |
| spelling | doaj.art-f45c3cc2ba6349c2b47a1187ab516af12022-12-21T18:20:12ZfasShahid Chamran University of Ahvazعلوم و مهندسی آبیاری2588-59522588-59602015-11-01383738710.22055/jise.2015.1147611476The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun RiverOmid Karami0Abdolrahim Hooshmand1Saeid BoroomandNasab2دانشجوی کارشناسی ارشد آبیاری و زهکشی دانشگاه شهید چمران اهوازدانشیار گروه آبیاری و زهکشی دانشگاه شهید چمران اهوازاستاد گروه آبیاری و زهکشی دانشگاه شهید چمران اهوازIn order to study the chemical clogging and its effect on hydraulic performance of trickle irrigation system, four treatments includes compensating emitters (Netafim and Micro-Flapper), non-compensating emitters (Mehr and Goldani), three treatment of flow rates that includes 8, 4 and 2 lph (liters per hour) were selected and tested using Karoun river’s water in No. 1 research farm of Shahid Chamran University of Ahvaz. The experiment was conducted in a Completely Randomized Block Design (CRBD) and irrigation was performed in 31 times with irrigation frequency for two days, at pressure of 1.5 bar. The results showed that decreasing of flow rate of Micro-Flapper emitter with 8 and 4 LPH flows is higher than the other treatments and this decreasing is significante at the five percent. Also the Micro-Flapper emitter with 2 lph flows has the lowest decreasing of flow rate. Based on field observations, herniation of silicon diaphragm that used in Micro-Flapper emitters with 8 and 4 lph flows is the main reason for the reduction of flow rate and high values of CV, q<sub>var </sub>and q<sub>d</sub>. So in this particular case the Chemical sediment did not impose a major effect. Turbulent regime of water at the outlet is the reason of resistance against the chemical clogging in the Micro-Flapper emitter with 2 lph flows. In Netafim emitter with 8 and 4 lph, despite having the significant clogging in five percent signification level have a minimal values of CV, q<sub>var</sub> and q<sub>d</sub> and high values of EU and CU. In this experiments, the treatment which had the lowest coefficient of manufacturing Variation, was accounted to it the lowest coefficient of variation of flow rate and the highest Emission Uniformity of variation. In most treatments during the Irrigation, values of CV, q<sub>var</sub> and q<sub>d </sub>increased and values of EU and CU decreased. According to the results presented, the Goldani emitter with 8 gph flows is rated and selected as the top emitter in both terms of resistance against the chemical clogging and hydraulic performance parameters than other emitters.http://jise.scu.ac.ir/article_11476_b90f2bc3a2456748302c467e21a90f45.pdftrickle irrigationchemical cloggingpressure compensating emitternon-compensatingkaroun river |
| spellingShingle | Omid Karami Abdolrahim Hooshmand Saeid BoroomandNasab The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River علوم و مهندسی آبیاری trickle irrigation chemical clogging pressure compensating emitter non-compensating karoun river |
| title | The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River |
| title_full | The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River |
| title_fullStr | The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River |
| title_full_unstemmed | The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River |
| title_short | The Chemical Clogging and its Effects on Hydraulic Performance of Different Types of Emitters with Different Flow Rates using Water of Karoun River |
| title_sort | chemical clogging and its effects on hydraulic performance of different types of emitters with different flow rates using water of karoun river |
| topic | trickle irrigation chemical clogging pressure compensating emitter non-compensating karoun river |
| url | http://jise.scu.ac.ir/article_11476_b90f2bc3a2456748302c467e21a90f45.pdf |
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