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All Journal Jurnal Teknik Kimia Kinetika JURNAL EKSPERIMENTAL : Media Ilmiah Pendidikan Guru Madrasah Ibtidaiyah
Erlinawati
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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UJI KINERJA ROTARY DRYER BERDASARKAN EFISIENSI TERMAL PENGERINGAN SERBUK KAYU UNTUK PEMBUATAN BIOPELET Ahmad Zikri; Erlinawati; Irawan Rusnadi
Jurnal Teknik Kimia Vol 21 No 2 (2015): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

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Abstract

Permintaan sumber daya energi setiap harinya semakin meningkat, terutama untuk bahan bakar fosil atauenergi terbarukan seperti minyak, gas, dan batubara. Peningkatan ini tidak juga disertai dengan produksibahan bakar fosil. Cara yang bisa yang bisa kita lakukan untuk mengatasi masalah ini salah satunyamenggunakan energi terbarukan seperti biopelet dari serbuk kayu yang didukung oleh teknologipengeringan dalam proses pengobatan. Proses pengeringan adalah langkah yang sangat penting untukmenghasilkan bahan bakar biomassa dengan kualitas baik, pengeringan ditujukan untuk mengurangikandungan air dalam bahan baku biomassa dan meningkatkan nilai kalor. Tujuan dari penelitian iniadalah untuk membuat sebuah prototipe rotary dryer untuk biomassa, dan menghasilkan produk keringuntuk biopellets. Diawali dengan disain struktural alat yang akan dibuat dan menganalisis sistem termaldengan variasi pengeringan (30 menit, 45 menit, dan 60 menit) pada suhu konstan 60 0C. Hasil penelitianmenunjukkan bahwa pengeringan dengan waktu yang sangat lama, penurunan kadar debu kayu akan lebihbesar. Namun, efisiensi termal Tampilkan proses pengeringan ini masih cukup rendah karena ada besarkehilangan panas.
PENGARUH RASIO UDARA BAHAN BAKAR LPG TERHADAP FLAME TEMPERATURE DAN EFISIENSI TERMAL CROSS SECTION WATER TUBE BOILER Apriani, Marsa; Susanti, Amalia; Has, Cresa Moneta; Tahdid; Manggala, Agus; Erlinawati; Zurohaina
KINETIKA Vol. 12 No. 3 (2021): KINETIKA 01112021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Boiler is one of energy conversion machines. The boiler function is converting water into steam by utilizing the heat from the chemical reaction between fuel and oxygen in the air which is commonly known as the combustion reaction. The research purposes are to determine the effect of the LPG fuel air ratio on the flame temperature and thermal efficiency of cross section water tube boiler, and to determine the optimum fuel air ratio which produces the highest flame temperature and thermal efficiency. The air fuel ratio that use in this research are 29.16; 29.44; 29.71; 29.99; and 30,26. Based on the research, it is known that the fuel air ratio affects both of flame temperature and thermal efficiency of the cross section water tube boiler. On the range of air fuel ration 29.16 to 30.26, it is known that the greater the fuel air ratio, the higher the flame temperature and thermal efficiency The optimum air fuel ratio in this research is 29.99 which produces 680oC flame temperature and 58.85% on steady state saturated steam production, 7010C flame temperature and 59.71% thermal efficiency on non steady state saturated steam production, and 7040C flame temperature and 59.32% on superheated steam production.
PENGGUNAAN MEDIA LINGKUNGAN DALAM MENINGKATKAN HASIL BELAJAR BIOLOGI PADA MATERI KEANEKARAGAMAN HAYATI DI KELAS X MAN 4 PIDIE T.P 2018/2019 Erlinawati
JURNAL EKSPERIMENTAL : Media Ilmiah Pendidikan Guru Madrasah Ibtidaiyah Vol. 7 No. 1 (2018): Juni
Publisher : Sekolah Tinggi Ilmu Tarbiyah Al-Hilal Sigli Aceh- Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58645/eksperimental.v7i1.181

Abstract

One of the aims of this research is to implement the use of nature as the source of learning in class X MAN 4 Pidie of the academic year 2018/2019. This study is a classroom action research which was conducted in two cycles. Each cycle consisted of planning, acting, observing and reflecting. The subjects of the research were the students of MAN 4 class X. They were 36 students. The object of the study is biology in class X – which was implemented through the use of nature as media to learn. The result indicated that there were improvements in students understanding through learning by nature, it can be seen that the percentage was increased in each cycle. Cycle I, 65.25 %, cycle II, 91. 5 %. It was increased 26,25%.
Co-Authors Apriani, Marsa Has, Cresa Moneta Irawan Rusnadi Manggala, Agus Susanti, Amalia Tahdid Zikri, Ahmad Zurohaina