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Pembangkit Listrik Termoelektrik Terintegrasi Kompor Sekam Padi Liana, Yeni Rima; Yulianto, Agus Agus; Yulianti, Ian Ian
Wahana Fisika Vol 5, No 1 (2020): June
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v5i1.24000

Abstract

Penggunaan bahan bakar menjadi kebutuhan sehari-hari rumah tangga terutama untuk memasak. Keterbatasan persediaan bahan bakar gas menyebabkan peralihan ke bahan bakar alternatif seperti penggunaan  kompor sekam padi. Ruang pembakaran dirancang untuk mencapai pembakaran sempurna dengan meningkatkan efisiensi dan mengurangi polusi udara dalam ruangan. Pengembangan tambahan yang diperkenalkan dalam penelitian ini, melibatkan penggunaan 6 modul generator termoelectric TEC1-12706 yang dirangkai secara seri untuk membangkitkan energi listrik untuk penerangan dan pengisian daya handphone. Uji eksperimental sederhana dilakukan dengan menvariasikan massa sekam padi 200 gram dan 500 gram. Hasil penelitian ini didapatkan tegangan output maksimum sebesar 6,21 volt dan arus yang masuk ke baterai sebesar 2,40 A yang dapat digunakan untuk penerangan dan pengisian daya handphone  sampai 70% dari daya awalnya yang dicapai untuk bahan bakar 500 gram sekam padi.   The use of fuel is a daily necessity for the household, especially for cooking. Limited supply of natural gas causes a shift to alternative fuels such as the use of rice husk stoves. The combustion chamber is designed to achieve complete combustion by increasing efficiency and reducing indoor air pollution. Additional development introduced in this study, involves the use of 6 TEC1-12706 thermoelectric generator modules arranged in series to generate electrical energy for lighting and charging mobile phones. A simple experimental test was carried out by varying the mass of rice husk 200 grams and 500 grams. The results of this study obtained a maximum output voltage of 6.21 volts and                a current entering the battery of 2.40 A which can be used for lighting and charging mobile phones up to 70% of the initial power achieved for 500 grams of rice husk fuel. Keywords: Thermoelectric Generator, rice husk stove, electric energy generator.
Study of Sun Protection Factor (SPF) Batik Textile Fabric on Solar Radiation in Pekalongan Liana, Yeni Rima; Baiti, Upik Nur; Fianti, Fianti
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 2021: Articles in Press
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n1.p%p

Abstract

AbstractThe amount of sunscreen ability is determined through the value of a person's Sun Protection Factor (SPF) when under the sun without experiencing sunburn. This study aims to measure the intensity of sunlight received by batik textile fabrics and SPF measurements to determine the ability of these fabrics to protect sunlight radiation. The research was conducted at the Sorogenen area in Pekalongan City. Intensity data collection is done during sunny weather with temperatures of 300C - 320C from 10.00 to 14.00 WIB. The SPF value can be calculated by comparing the intensity of sunlight without a protective batik cloth with the intensity of sunlight with a protective cloth. The intensity of the average in the range of 10:00 to 14:00 WIB is 85.160 lux to 113.400 lux.  The  results obtained by fabric with a thickness of  2 mm have a SPF greater than fabric with a thickness of 1 mm. Cotton fabric has the ability to protect against sunlight better than satin and mori cloth. The largest SPF value is owned by a blue cotton cloth with a thickness of 2 mm of 36,06. While the smallest SPF value is owned by yellow cloth with a thickness of 1 mm of 5,24.