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Baca Juga : ANALISIS PRESTASI TURBIN ULIR (ARCHIMEDES SCREW) SEBAGAI PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (STUDI KASUS DI AIR DINGIN, SAMADUA ACEH SELATAN) (Irwansyah, 2018) ,

Baca Juga : PENGUJIAN UNJUK KERJA TURBIN ULIR ARCHIMEDES SINGLE SCREW MENGGUNAKAN TRANSMISI RODA GIGI DENGAN VARIASI DEBIT LAJU ALIRAN (Geralg Shelmo Putra, 2018) ,

imanfaatkan sebagai energi penggerak turbin air. tujuan dari penelitian ini adalah merancang, membuat kontruksi turbin ulir (archimedes screw) 1 blade dan 2 blade dan melakukan pengujian turbin serta mengetahui kinerja dari turbin ulir (archimedes screw) 1 blade dan 2 blade berdasarkan pengaruh debit aliran air terhadap putaran, torsi, daya dan efesiensi optimum sehingga dapat menentukan desain turbin yang tepat dan memiliki kinerja yang baik. turbin ulir (archimedes screw) dibuat dengan bahan stainless steel 201 yang memiliki dimensi jumlah n =1 blade (r_o=130 mm, r_i=70 mm) dan n= 2 blade (r_o=260 mm, r_i=140 mm) dengan pitch 2ro, panjang turbin(l= 2 m), head= 1 m, sudut ? = 300. variabel yang diukur dan diamati adalah putaran turbin, torsi, dan debit aliran. pengujian dilakukan pada 3 variasi debit aliran, yaitu 0.02 m3/s, 0.009 m3/s, dan 0.003 m3/s. hasil pengujian,putaran dan daya tertinggi turbin terjadi pada debit aliran 0.02 m3/s sebesar 236,40 rpm dan 116.10 watt dan efisiensi turbin maksimum adalah 57% (pada n=1 blade) sedangkan hasil pengujian putaran dan daya tertinggi turbin terjadi pada debit aliran 0.02 m3/s sebesar 292,10 rpm dan 122.20 watt dan efisiensi turbin maksimum adalah 62% (pada n=2 blade). dengan demikian, turbin dengan daya maksimum diperoleh pada saat debit aliran 0.02 m3/s sedangkan turbin dengan efisiensi maksimum diperoleh pada saat debit aliran 0.02 m3/s. untuk hasil simulasi numerik memiliki nilai distribusi tekanan optimum sebesar 4,873 kpa dan minimum sebesar 0,1536 kpa, maka perbandingan hasil eksperimen dengan simulasi numerik yaitu nilai torsi optimum simulasi numerik sebesar 2,50 n/m dan nilai torsi optimum eksperimen sebesar 2,00 n/m. kata kunci : archimedes screw, energi terbarukan, blade, head, torsi, efisiensi. performance analysis of screw turbines (archimedes screw) as micro hydro power plants (case study at air dingin, samadua of south aceh) abstract renewable energy is energy that comes from nature and can be produced continuously without the need to wait for a long time such as water energy as a micro hydropower plant. the development of micro hydropower plants is utilizing the potential energy of water flow that has a certain head and discharges to be converted by turbines and generators into electrical energy that can be used in the development of archimedes screw turbines. threaded turbine (archimedes screw) is a type of turbine that is able to operate with a low head 1-15 m in both river and irrigation. aceh is one of the areas that has a lot of water energy potential to be used as a driving force for water turbines. the purpose of this study was to design, make 1 blade and 2 blades archimedes screw turbines and conduct turbine testing and determine the performance of 1 blade archimedes screw and 2 blades based on the effect of water flow discharge on torque, power and optimum efficiency so that it can determine the right turbine design and have good performance. threaded turbine (archimedes screw) is made with 201 stainless steel which has dimensions of n = 1 blade (ro = 130 mm, ri = 70 mm) and n = 2 blades (ro = 260 mm, ri = 140 mm) with pitch of 2ro , turbine length (l = 2 m), head = 1 m, angle ? = 300. variables measured and observed are the turbine, torque, and flow discharge. tests were carried out on 3 variations of flow discharge, namely 0.02 m3/s, 0.009 m3/s, and 0.003 m3/s. the test results, the highest spin, and power of the turbine occur at a flow rate of 0.02 m3/s at 236.40 rpm and 116.10 watts and the maximum turbine efficiency is 57% (at n = 1 blade) while the highest spin and power test results occur at the flow rate 0.02 m3/s of 292.10 rpm and 122.20 watts and the maximum turbine efficiency is 62% (in n = 2 blade). thus, the turbine with maximum power is obtained at a flow rate of 0.02 m3/s while a turbine with maximum efficiency is obtained at a flow rate of 0.02 m3/s. for numerical simulation results have an optimum pressure distribution value of 4.873 kpa and a minimum of 0.1536 kpa, then the comparison of experimental results with numerical simulation is the optimum torque value of numerical simulation of 2.50 n/m and the optimum experimental torque value of 2.00 n/m. keywords: archimedes screw, renewable energy, blade, head, torque,

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