ارزيابي بازده پمپهاي آبياري در استان زنجان

Evaluation of Energy Efficiency of Water Pumps in Zanjan Province of Iran

چكيده در دهه هاي اخير با رشد و توسعه كشورها تقاضا براي مصرف آب افزايش يافته و منابع آب پايدار و تجديد شونده به حالت ناپايدار و متكي به منابع انرژي تغيير يافته است. اطلاعات پراكنده نشان مي دهد پمپ هاي آب بازده مطلوبي ندارند. طرح حاضر براي ارزيابي بازده پمپ هاي آب اجرا گرديد. براي اجراي طرح، 104 ايستگاه پمپاژ انتخاب و براي هر ايستگاه، علاوه بر آبدهي پمپ، فشار و دماي آب، شدت جريان و ولتاژ در الكتروپمپ ها، و ميزان مصرف سوخت در موتورپمپ ها اندازه گيري شد. بر اساس محاسبات انجام شده ميانگين بازده براي الكتروپمپ هاي شناور 36 درصد، الكتروپمپ هاي كف كش 78/20 درصد، الكتروپمپ هاي گريز از مركز 57/11 درصد ، موتور پمپ هاي گريز از مركز ديزلي 82/6 درصد و موتور پمپ هاي توربيني ديزلي 83/17 درصد به دست آمد. بر اساس نتايج طرح، از طريق استفاده از الكتروموتور به جاي موتر ديزلي، استفاده از پمپ هاي بزرگ به جاي پمپ هاي كوچك متعدد، اجراي طرح هاي پژوهشي، نصب سامانه اندازه گيري عمق سطح آب در چاه هاي عميق، برگزاري كلاس هاي آموزشي و ترويجي، تعيين متولي و تشكيل كار گروههاي اندازه گيري بازده، مي توان وضعيت را بهبود بخشيد و به نتايج عملي شامل: صرفه جويي قابل توجه در مصرف انرژي در سال و كاهش آلودگي محيط زيست دست يافت. واژه هاي كليدي: ايستگاه پمپاژ، بازده پمپ، پمپ آبياري، صرفه جويي در انرژي

Evaluation of Energy Efficiency of Water Pumps in Zanjan Province of Iran Javad Zabiheian1 and Alireza Amanloo2* 1Dept. of Irrigation and Drainage Engineering, Faculty of Agriculture, University of Zanjan, Iran 2Education and Research Farm, Faculty of Agriculture, University of Zanjan, Iran *Corresponding author: E-mail: Aamanlo330@yahoo.com Abstract In recent decades, growth and development of countries have been coincided with great increase in water demand. So renewable and sustainable water resources used in the past, have been replaced with sustainable and energy dependent resources. Scattered information indicates that the irrigation pump efficiency is undesirable. Therefore, the present research was conducted to evaluate the irrigation pumps efficiencies. To implement the project, 104 pumping stations were selected in Zanjan province, Iran, considering the feasibility of efficiency measurement, for this purpose, the discharge rate, water pressure and its temperature were measeared. Also, input voltage and current for electrically driven, and, fuel consumption for diesel engine driven pumps were measured. Results showed that the average efficiencies were 36%, 20/78%, 11/57%, 6/82%, 17/83% for submersible pumps, drainage electro pumps, centrifugal electro pumps diesel engine driven centrifugal pumps and diesel engine driven multistage centrifugal pumps respectively. Results suggested that, replacing diesel engine driven pumps with electric pumps, using a single large pumps instead of several small pumps, organizing training courses for farmers, improving extension services, periodic inspection of the stations and in place measurement of pumps efficiencies by responsible bodies, can significantly improve the efficiency of the pumps efficiencies, and significant amount of savings in annual energy consumption and investment in electricity industry as well as reducation in environmental pollution can be achieved. Keywords: Energy savings, Irrigation pump, Pumps efficiencies, Pumping station