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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Jukung (Jurnal Teknik Lingkungan) TEKTAN
Kelik Istanto
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Mechanical Engineering Transportation

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Optimasi Pemberian Air Irigasi Berdasarkan Penggeseran Jadwal Tanam Terhadap Luas Tanam Maksimum (Studi Kasus Daerah Irigasi Sekampung Batanghari Kabupaten Lampung Tengah) Aniessa Rinny Asnaning; Muhammad Idris; Kelik Istanto
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 22, No 1 (2017): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v22i1.900

Abstract

Sekampung Batanghari Irrigation Area is one of the irrigation areas whose water supply comes from Argoguruh Dam. Lack of water discharge on weirs causes the cultivated area to be limited. The problem of water shortage needs to be given optimization solution of water distribution so that the area can be planted to maximum and can increase rice production.. Optimization analysis of channel in Sekampung Batanghari Irrigation Area was done using linear programming method by initial shifting cultivation in the first planting season when the availability of discharge in the channel was abundant with rice-rice-rice cropping pattern for three times of planting season. The optimization results that have been done by shifting the beginning of planting in January, February, May, August, and November show that the maximum plantable area that can be cultivated is 1,823.77 hectares per year that is on the initial shifting of the first planting season in January or May with intensity planting of 230%. While the minimum planting area that can be planted is 1,062.71 hectares per year on the initial shift of the first planting season in November.Kata kunci : optimization, irrigation, planting season
Simulasi Koefisien Parameter DAS dalam Membangkitkan Debit Sintesis dengan Metode Nreca (Studi Kasus pada DAS Sekampung Propinsi Lampung) Andy Eka Saputra; Kelik Istanto; Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 4 No 1 (2012)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v4i1.823

Abstract

This study aims to create a simulation of watershed parameters in the coefficient generating discharge data by the method of synthesis of NRECA at watershed Sekampung. The research was conducted at Polytechnic Lampung in August and November 2011. Search the data using charts NRECA created four stages of simulation, of the four simulations have started to show a trend following observations have been made. From the results of the simulation parameters to manufacture-4 is closer to a state of observation and calculation. This is shown by - average number of discharges with the same observation. Visually, the graph is closer to the observation that the model parameters can be used to predict the amount of discharge, especially in watershed areas compatriot Lampung Province. The best simulation on the simulation of the four obtained values of model parameters correlation coefficient Qobs Vs Qsim of 0.27 with the watershed parameters Sinitial: 50, Gwinitial: 50, SNOM: 100, Krech: 0.85, 0.63 K Base and CF: 0.72. included in watershed characteristics that have characteristics of watersheds with high permeable aquifers and discharge the small mainstay. Keywords: NRECA, model parameters, DAS, discharge synthesis
RANCANG ALAT PEMURNI AIR LAUT TENAGA SURYA DENGAN KOLEKTOR PANAS CERMIN CEKUNG Iskandar Zulkarnain; Ismadi Raharjo; Kelik Istanto
Jukung (Jurnal Teknik Lingkungan) Vol 4, No 2 (2018): SEPTEMBER 2018
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.911 KB) | DOI: 10.20527/jukung.v4i2.6578

Abstract

Tujuan dari penelitian ini adalah: merancang alat pemurni air laut berdasarkan teori pemanasan, penguapan dan kondensasi menggunakan energi sinar matahari. Kegiatan penelitian dilakukan dengan mengamati data parameter berdasarkan 3 kombinasi perlakuan, yaitu; a) penggunaan kotak evaporasi yang memurnikan air setinggi 1 cm; b) penggunaan kotak evaporasi dan cermin cekung yang memurnikan air setinggi 1 cm; c) penggunaan kotak evaporasi, cermin cekung, dan kondensor yang memurnikan air setinggi 1 cm; Pengamatan selama 10 jam pemanasan di bawah matahari mulai pukul 07.00-17.00 WIB, memberi hasil bahwa ketiga kombinasi tersebut mampu memurnikan air laut menjadi air tawar. Kombinasi terbaik adalah kombinasi B, yang menghasilkan volume air tawar sebanyak 1.718 ml. Pengamatan lain yaitu nilai TDS menunjukkan bahwa penurunan nilai TSD air baku (air laut) dari 27.000 ppm menjadi 3 ppm hingga 5 ppm, sedangkan suhu air yang dihasilkan dari proses pemurnian menunjukkan nilai-nilai berkisar antara 27,5oC hingga 29,7oC, sedangkan pH air destilasinya berkisar di 5,024 hingga 5,252. Kata kunci : Air Bersih, Energi Surya , Pemurnian Air. The purpose of this research is : designing a water sea purifier tools based on the theory of heating, evaporating and condensing using sunlight energy. The research activity is done by observed data parameter based on 3 combination of treatment ; a) the use of evaporative boxes to purify seawater as high as 1 cm; b) the use of evaporative boxes and concave mirrors to purify seawater as high as 1 cm; c) the use of evaporative boxes, concave mirrors, and condensors to purify seawater as high as 1 cm; Observations for 10 hours of warming under the sun began at 07:00 to 17:00 pm, giving resulted that all combination are able to purify the seawater into fresh air. The best combination is a combination of B, which produces a fresh air volume of 1,180 ml. . The observation of the TDS value shown that a decline in the value of TSD raw water (seawater) from 27.000 ppm to 3 ppm until 5 ppm, while the temperature of the water produced shown values range between 27,5oC up 29,7oC, whereas pH of the destilated water around the 5.024 up to 5.252. Keywords: Fresh Water,Solar Energy , Water Purified
Co-Authors Anak Agung Gede Sugianthara Andy Eka Saputra Aniessa Rinny Asnaning Iskandar Zulkarnain Ismadi Raharjo Muhammad Idris