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Totok Prasetyo
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Re-circulating rice dryers suitable for large amount of loading capacity.  It generally comprises of two parts, the tempering section and a drying section, and the grains are dried in an intermittent way until the final moisture content of the grains can be achieved.  Wet grains are initially dried for about 11 minutes within the drying section of the dryer.  The grains then are conveyed to the tempering section where it will be stored for about 40 to 50 minutes.  At every passes, about less tha Totok Prasetyo; Kamaruddin Abdullah; Armansyah H. Tambunan; Leopold Nelwan; I Made K.D
Forum Pasca Sarjana Vol. 32 No. 1 (2009): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

Re-circulating rice dryers suitable for large amount of loading capacity.  It generally comprises of two parts, the tempering section and a drying section, and the grains are dried in an intermittent way until the final moisture content of the grains can be achieved.  Wet grains are initially dried for about 11 minutes within the drying section of the dryer.  The grains then are conveyed to the tempering section where it will be stored for about 40 to 50 minutes.  At every passes, about less than 2%(wb) of the moisture content can be removed from the grains. The number of passes required to accomplish a drying process in a recirculation dryer depends on the initial moisture content and the amount of rough rice to be dried.  The drying and tempering duration can be adjusted by means of a mechanical valve.  The purpose of this study was to examine the performance of re-circulating dryers equipped with pneumatic conveyor instead of bucket elevator to reduce electricity cost and heated using a proper blend between kerosene and jatropha oil.  Several experimental runs had been conducted under a constant drying temperature of 60oC and was controlled by adjusting the rate of fuel consumption.  The experimental results showed that the drying efficiency was in the range of 22.2% to 31.1%, the specific energy consumption was between 3.475-4.785 MJ/kg H2O evaporated, fuel consumption at 0.95 to 1.15 (liters/hr) and the drying rate was 0.9%/hr.  The entire drying operation using 465 kg of rough rice required 10 hours of drying time with 74.3% of head yield.  Mathematical model used in this study also had indicated close agreement with experimental data.   Key words: re-circulating dryer, pneumatic conveyor, drying performance, tempering period, bio-kerosene blend
Pendampingan IPTEK Eduwisata Ramah Lingkungan dan Peningkatan Produktivitas UMKM/UMKMK Menuju Terbangunnya Kampung Tangguh Mangunharjo Kota Semarang Aji, Nurseno Bayu; Totok Prasetyo; Kurnianingsih; Dwiana Hendrawati; Sahid
Jurnal Abdimas Mandiri Vol. 8 No. 3
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v8i3.4576

Abstract

Program "Kampung Tangguh" yang digagas oleh Pemerintah Kota Semarang di Kelurahan Mangunharjo bertujuan untuk mengatasi tantangan utama yang dihadapi oleh masyarakat setempat, yaitu: (1) menurunnya tingkat ekonomi masyarakat yang lahan tambaknya tak bisa digunakan lagi akibat rob banjir; (2) pengelolaan UMKM terkait manajemen, proses produksi, dan pengembangan pasar. Kelurahan Mangunharjo memiliki berbagai potensi yang dapat dimanfaatkan, diantaranya: (1) memiliki lahan milik Pemerintah yang luas, (2) hasil laut atau tambak yang melimpah, dan (3) terdapat UMKM dengan berbagai bidang usaha. Program ini berupaya memanfaatkan potensi tersebut dengan memperkenalkan Pembangkit Listrik Tenaga Surya (PLTS) dan Cold Storage. Dengan adanya PLTS, pasokan listrik yang stabil dapat dijamin, sehingga kualitas dan kuantitas produk yang disimpan oleh UMKM dapat ditingkatkan secara signifikan. Di sisi lain, strategi pemasaran berbasis internet diterapkan untuk memperluas jangkauan pasar produk UMKM, yang diharapkan dapat meningkatkan pendapatan dan keberlanjutan ekonomi mereka. Matching Fund 2023 mendukung implementasi tahap awal dari program ini, yang difokuskan pada penerapan teknologi PLTS berbasis IoT dan kecerdasan buatan yang diharapkan dapat meningkatkan kapasitas produksi UMKM, serta penyediaan alat produksi yang tepat guna bagi UMKM di Mangunharjo. Dengan dilaksanakannya pengabdian ini berhasil mengurangi biaya listrik produksi hingga 50% dan meningkatan kualitas penyimpanan produk yang dihasilkan dapat ditingkatkan hingga kapasitas 1,5-2 ton per harinya.
Co-Authors Armansyah H. Tambunan Dwiana Hendrawati I Made K.D Kamaruddin Abdullah Kurnianingsih Leopold Nelwan Nurseno Bayu Aji, Nurseno Bayu Sahid