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PENINGKATAN DAYA KELUARAN SEL SURYA DENGAN PENINGKATAN TEMPERATUR PERMUKAAN SEL SURYA Priyanto, Budhi
Jurnal Neutrino JURNAL NEUTRINO (Vol 7, No 1
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.464 KB) | DOI: 10.18860/neu.v7i1.2639

Abstract

Intensitas cahaya yang menyinari permukaan sel surya meningkatkan temperatur permukaan sel surya. Peningkatan temperatur meningkatkan daya keluaran sel surya dan didapatkan hubungan yang linier antara temperatur dan daya keluaran sel surya. Daya keluaran sel surya berbanding lurus dengan temperatur permukaan panel sel surya dan didapatkan peningkatan daya keluaran sebbesar 0,4377 per derajat celcius.
PEMAKSIMALAN DAYA KELUARAN SEL SURYA MENGGUNAKAN LENSA CEMBUNG Priyanto, Budhi
Jurnal Neutrino JURNAL NEUTRINO (Vol 6, No 2
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.104 KB) | DOI: 10.18860/neu.v0i0.2584

Abstract

Penggunaan kumpulan lensa cembung meningkatkan intensitas berkas cahaya matahari. Lensa cembung baik yang disusun secara mendatar maupun secara melengkung dan diletakkan diatas panel sel surya pada jarak 15 cm dibawah lensa mampu menaikkan daya keluaran sel surya.lensa cembung yang disusun secara mendatar dapat menaikkan daya keluaran sel surya diatas 25% sedangkan lensa yang disusun secara melengkung mampu menaikkan daya keluaran diatas 50 %. Jadi penggunaan lensa cembung dapat memaksimalkan daya keluaran sel surya.
PENINGKATAN DAYA KELUARAN SEL SURYA DENGAN PENAMBAHAN INTENSITAS BERKAS CAHAYA MATAHARI Priyanto, Budhi
Jurnal Neutrino JURNAL NEUTRINO (Vol 5, No 2
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.71 KB) | DOI: 10.18860/neu.v0i0.2438

Abstract

Sel surya sebagai penghasil energi listrik dari sinar matahari secara langsung saat ini masih memberikan daya keluaran yang relative kecil. Diperlukan panel sel surya yang luas untuk mendapatkan daya besar. Dilakukan metode meningkatkan daya keluaran sel surya dengan tidak menambah luas permukaan panel sel surya. Peningkatan dilakukan dengan menambahkan perangkat pengumpul berkas sinar  matahari dari  kumpulan lensa  cembung  yang  disusun  secara  mendatar. Pengumpul berkas sinar matahari terdiri dari 30 lensa dengan panjang fokus 30 cm. Dengan cara ini didapatkan  daya  keluaran  dari  panel  sel  surya  yang  digunakan  mengalami  peningkatan.  Pada penelitian ini didapatkan peningkatan daya keluaran dari panel sel surya yang digunakan sebesar 26,67%.
Rancang Bangun Penstabil Tegangan Pada Pembangkit Termoelektrik Skala Pico Berbasis Boost Converter Fajria, Ailin Rohmatul; Priyanto, Budhi; Pakaya, Ilham; Zulfatman, Zulfatman
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol 2, No 2, May-2017
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (824.459 KB) | DOI: 10.22219/kinetik.v2i2.181

Abstract

Kurangnya pemanfaatan modul termoelektrik sebagai pembangkit listrik di masyarakat sering diakibatkan energi yang dihasilkan cenderung tidak stabil.  Sehingga diperlukan sebuah rangkaian penstabil tegangan yang dapat menaik dan menurunkan tegangan menjadi tegangan tertentu. Tujuan proyek ini adalah merancang sebuah rangkaian penstabil tegangan DC skala pico berbasis boost converter. Pengujian dilakukan dengan 3 tahap, yaitu pengujian rangkaian penstabil menggunakan sumber adaptor yang mempunyai tegangan masukan 3-9 V, pengujian kinerja pembangkit termoelektrik pada beberapa ∆T tertentu dan pengujian rangkaian penstabil menggunakan sumber termoelektrik dengan ∆T yang sama dengan pengujian sebelumnya. Hasil pengujian pertama, saat diberikan tegangan masukan 3 hingga 9 V maka menghasilkan tegangan keluaran 5,07 hingga 5,08 V sehingga memiliki persentase ketepatan 98,55% terhadap tegangan 5 V yang diharapkan. Pada pengujian kedua, yaitu saat ∆T bernilai 30, 50 dan 70 °C  menghasilkan tegangan keluaran 2,5, 3,04 dan 3,39 V. Sementara pada pengujian ketiga dengan ∆T yang sama menghasilkan tegangan keluaran 5,08 hingga 5,09 V. Namun, saat ∆T bernilai 12 °C mengeluarkan tegangan 0,8 hingga 0,9 V baik pada pengujian kedua maupun ketiga, hal ini disebabkan tidak memenuhi tegangan kerja sistem penstabil yaitu 2 hingga 24 V. Hubungan antara ∆T terhadap Tegangan Keluaran (V), Arus (I) dan Daya (P) yang dihasilkan memiliki nilai R positif 0,76 hingga 1, yang berarti adanya hubungan berbanding lurus. Sehingga, semakin besar nilai ∆T maka akan berdampak pula pada semakin besarnya nilai V, I dan P yang dapat menjadi indikator kualitas pembangkit termoelektrik yang sedang diuji.
Monitoring Fuel Oil Based Radio Frequency Identification (RFID) Client Septiantono, Dezar; Zulfatman, Zulfatman; Priyanto, Budhi
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol 3, No 2, May-2018
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.707 KB) | DOI: 10.22219/kinetik.v3i2.583

Abstract

Motorcycles are a means of transportation which plays an important role in peoples lives. One of the existing problems on the motorcycle is the indicator system or often called by speedometer, an indicator system showing the value of the volume of fuel oil. In fact, the sensor unit used by the indicator is not a volume sensor but the surface of the fuel sensor in the form of mechanical potentiometers. This equipment irregularly measures oil tank so that the mathematical approach to formulate the relationship between surface height and gasoline volume will be difficult. Therefore, to interpret the data manipulation done by comparison method is the method of comparison experiment and calculation. This method is applied in this research due its more superior accuracy and efficiency. This research designs hardware for monitoring fuel oil based on Radio Frequency Identification (RFID) using AT mega 328 as main controller and LCD to display driver’s identity sent by General Packet Radio Service (GPRS). The sensor used is a buoy sensor, measuring the fuel volume between 0.20 liters to 9.55 liters. It is known that the comparative method has an average rate of 16.1%, in measuring the fuel volume between 0.20 liters to 3.68 liters. It is known that the comparative method has an average rate of 17.9%. On measuring the fuel volume between 0.20 liters to 3.43 liters, the comparative method having an average rate of 7.2% is employed. Based on the test results, the best comparison method in comparison with the interpolation method with the average rate of smallest 7.2% is determined. 
PENERAPAN UJI HAYATI DENGAN LEMNA SP. UNTUK MENGKAJI KUALITAS AIR SUNGAI YANG MENERIMA AIR LIMBAH INDUSTRI TEKSTIL DI KABUPATEN BANDUNG Priyanto, Budhi
Jurnal Hidrosfir Indonesia Vol 4, No 3 (2009)
Publisher : Jurnal Hidrosfir Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (115.29 KB)

Abstract

To assess the possibility cause of deterioration to rice production in several villages downstream to Rancaekek, Bandung, we conducted laboratorium experiment using Lemna as the bioassay agent. Lemna sp. has been exposed to mixtures of inorganic tissue culture medium salts and filtered raw wastewater (effluent) taken from textile mill in Rancaekek, Bandung. The system was then incubated for 7 days under continuous daylight fluorescent lamps and the number of fronds and fresh weight were determined. The results show that EC50 of the textile industry’s wastewater is 37.5% of the wastewater. The LOEC value is 30% and the NOEC is 15%. This experiment suggests that wastewater from textile industry is potentially dangerous to aquatic plants, including rice and vegetable, if it was discharged to public water body without appropriate pre-treatment.
BEBERAPA ASPEK PENGELOLAAN CAGAR ALAM RAWA DANAU SEBAGAI SUMBER AIR BAKU Priyanto, Budhi
Jurnal Teknologi Lingkungan Vol. 7 No. 3 (2006): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.333 KB) | DOI: 10.29122/jtl.v7i3.391

Abstract

Economically, Rawa Danau is important fresh water source for cities ofCilegon and Serang and industrial estates in the area. Ecologically, RawaDanau is the last and the only mountainous freshwater swamp still exists inJava island. In the last decade there are several studies that recommendincreasing the capacity of Rawa Danau as water storage. Recently, theMaster Plan of Rawa Danau has been published by the Province of BantenPlanning Agency. It is concluded that increasing the water level in RawaDanau by 2 meters would satisfies the 2010 projected water demand inSerang and Cilegon. We belief that the action could endanger theexistence of both the swamp forest and the rice field in the vicinity. In thispaper we describe an alternative action that could increase the waterstorage capacity of Rawa Danau whilst the ecological function of theswamp could be preserved as well.
UJI TOKSISITAS DUA JENIS SURFAKTAN DAN DETERJEN KOMERSIAL MENGGUNAKAN METODE PENGHAMBATAN PERTUMBUHAN LEMNA SP. Priyanto, Budhi
Jurnal Teknologi Lingkungan Vol. 7 No. 3 (2006): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.877 KB) | DOI: 10.29122/jtl.v7i3.388

Abstract

In this experiment, Lemna sp. was exposed to surfactants LAS and ABSand a commercial detergent following method described by OECD. In thetest, 10 fronds of Lemna sp. were grown in a modified MS mediumcontaining the surfactants and detergent in the concentration of 0 ppm to79 ppm and incubated for 7 days under continuous fluorescence lamps.The EC50 values of the detergent and surfactants vary depending on thecompounds and the testing parameter. For LAS and ABS, the value ofEC50 from number of fronds is higher than EC50 from the total chlorophyllcontent, i.e. 14.83 and 14.36 mg/l for LAS and 11.75 and 7.56 mg/l forABS, respectively. However, the total chlorophyll content is not sensitivefor commercial detergent “A” and results in a higher EC50 value of 31.53mg/l. LOEC values for LAS and ABS is 5 mg/l respectively, and is 25 mg/for detergent ”A”.
UJI TOKSISITAS AIR LIMBAH PENYAMAKAN KULIT MENGGUNAKAN METODE PENGHAMBATAN PERTUMBUHAN LEMNA SP. Priyanto, Budhi
Jurnal Teknologi Lingkungan Vol. 7 No. 2 (2006): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (44.682 KB) | DOI: 10.29122/jtl.v7i2.384

Abstract

Various organisms, including Lemna sp., have been employed in thetoxicity test of waste, soil, and water. In this experiment Lemna sp. wereexposed to waste water collected from tanneries in Garut, West Java.The experiment system includes liquid medium (macro and micro salts ofMurashige and Skoog), to which a series of concentrations of the pre-filter-sterilized tannery waste water were added aseptically. Aseptic grownLemna sp. were placed on the medium in a density of 10 fronds permedium container. The system was then incubated for 7 days undercontinuous daylight fluorescent lamps and the number of fronds, freshweight and chlorophyll content of the plants were determined. The resultsshow that EC50 of the tannery waste water is 0.66% of waste water. TheLOEC value is 0.1% and the NOEC value could not be determined butshould below 0.1%. This experiment suggests that tannery waste water isdangerous to aquatic plants if it was discharged to public water bodywithout appropriate pre-treatment.
TOLERANSI LIMA JENIS RUMPUT TERHADAP MINYAK DAN KAPASITAS DEGRADASINYA DALAM SISTEM FITOREMEDIASI Priyanto, Budhi
Jurnal Teknologi Lingkungan Vol. 13 No. 2 (2012)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (654.452 KB) | DOI: 10.29122/jtl.v13i2.1413

Abstract

Sistem fitoremediasi berbasis rumput untuk pengelolaan pencemaran lingkungan di tambang minyak telah diteliti. Lima jenis rumput, yaitu Scirpus grossus, Brachiaria humidicola, Eleusine indica, Paspalum notatum, dan Setaria splendida ditanam pada tanah tercemar minyak lama berkadar 3,1%. Pengaruh cekaman salinitas dievaluasi dengan menambahkan air formasi (850 mg/L TDS) ke dalam tanah. Setelah dua belasminggu, parameter pertumbuhan ditetapkan dan kandungan minyak dalam tanah dianalisis. Hasilnya menunjukkan, bahwa semua jenis rumput dapat tumbuh pada tanah tercemar minyak lama. Di bawah cekaman air formasi, jumlah anakan dan berat kering tunas B. humidicola dan S. splendida jelas tertekan, tetapi panjang akar meningkat. Sebaliknya, berat kering tunas pada S. grossus meningkat di bawah cekaman salinitas. Berat kering akar semua jenis rumput secara nyata berkurang dengan cekaman salinitas. Nisbah berat kering tunas terhadap akar relatif tidak dipengaruhi oleh salinitas. Kegiatan degradasi minyak dipengaruhi oleh cekaman salinitas. Kandungan minyak yang hilang dari tanah berkisar antara 32% hingga 50% pada semua jenis rumput.Kata kunci: pencemaran minyak, fitoremediasi, rumput, air formasi Abstract Experiment to develop a grass based phytoremediation system for environmental management in oil industry has been established in the green house. Five species of grasses, i.e. Scirpus grossus, Brachiaria humidicola, Eleusine indica, Paspalum notatum, dan Setaria splendida, were planted in 6.5 kg oil polluted Semanggi soil (oil content of 3,1%). The effects of salinity were evaluated by adding 800 ml of produced water (850mg/L TDS) to the soil. Growth parameters of the plants and the remaining oil content in the soil were determined in the end of week 12th after planting. The results indicated that all of the grass species are capable of growing well in the polluted soil. However, under the salinity stress, the number of buds on the stolons or rhizomes and the shoot dry weight of B. humidicola and S. splendida are reduced significantly. On the contrary,the root length of the two species is increased; and the shoot dry weight of S. grossus is increased. The root dry weight of all tested species are reduced significantly; however the ratio of shoot dry weight to root dry weight is not influenced by salinity stress. Overall, the oil removal rate from the soil is in the range of 32% to 50%; S. grossus and S. splendida are being the best. The oil degradation activity of the two species is slightly increased under salinity stress condition.Key words: oil polluted soil, phytoremediation, grass, produced water