شبیه سازی و طراحی بهینه استخر خورشیدی جهت آبیاری زیرسطحی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی مکانیک، دانشگاه سیستان و بلوچستان، زاهدان، ایران

2 گروه زیست شناسی، دانشگاه سیستان و بلوچستان، زاهدان، ایران

چکیده

امروزه با توجه به کاهش منابع آب‌های شیرین در دسترس و آلودگی آن، دستیابی به آب شیرین برای مصارف کشاورزی و آشامیدن ضروری است. در این مقاله به شبیه سازی یک سامانه آبیاری زیرسطحی خورشیدی به عنوان یکی از روش‌های کارآمد تهیه آب شیرین برای مصارف آشامیدن و کشاورزی، پرداخته شد. سامانه مورد بررسی از یک استخر به عنوان واحد رطوبت زنی و لوله‌های دفن شده در خاک به عنوان واحد چگالنده تشکیل شده است. در این شبیه سازی 8 پارامتر رطوبت نسبی، دمای آب استخر، فشار، دمای لوله، سطح مقطع ورودی هوا، دمای هوا، قطر لوله و سرعت هوا در سه سطح و 27 آزمایش به روش تاگوچی، برای محاسبه بیشترین مقدار آب شیرین تولید شده در هر متر لوله تعریف گردید. به منظور استفاده حداکثری از تابش خورشید از آینه استفاده گردید. نتایج شبیه سازی نشان می‌دهند که رطوبت، دمای لوله، سرعت و سطح مقطع ورودی هوای پایین تر باعث تولید آب شیرین بیشتر می‌گردد. همچنین افزایش دمای آب و دمای هوای و قطر لوله بیشتر با مقدار تولید آب نسبت مستقیم دارد و فشار بهینه نیز 95 کیلوپاسکال است. مقدار بهینه به دست آمده توسط روش تاگوچی،  kg/ m.day   15/5 می باشد که 23/5% خطا را در مقایسه با نتایج آزمایش نشان می‌دهد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Simulation and Optimal Design of Solar Pool for Subsurface Irrigation

نویسندگان [English]

  • M.R. Ahmadimoghaddam 1
  • S. Farahat 1
  • A. Einali 2
  • J. Valizadeh 2
1 Department of Mechanical Engineering, Sistan and Baluchestan University, Zahedan, Iran
2 Department of biology, Sistan and Baluchestan University, Zahedan, Iran
چکیده [English]

Nowadays, according to the pollution and reduction of available water resources, accessing to fresh water for agricultural and drinking purposes are restricted. In this paper, the solar subsurface irrigation system, which is one of the most efficient ways of fresh water production has been simulated. This system consists of a pool as a humidification unit and pipes that are buried in the soil as a condenser unit. In this simulation eight parameters including relative humidity, water pool temperature, pressure, pipe temperature, inlet air cross section, air temperature, air velocity and pipe diameter have been considered in three levels and 27 tests to calculate the amount of fresh water were presented using Taguchi method. In order to maximum use of sunlight, the mirror was used. The results showed that the lower humidity, pipe temperature, velocity and inlet air cross section increase the amount of water production. In addition, the higher pipe diameter, water temperature and air temperature is directly proportional to the amount of produced water. The optimal pressure is 95 kPa. The optimal amount of fresh water obtained from Taguchi method is 5.15 kg/m.day which shows an error of 5.23% compared to simulation result.

کلیدواژه‌ها [English]

  • Solar subsurface irrigation system
  • Simulation
  • Takeuchi method
  • Production of fresh water
  • Solar Pool
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