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Journal : BUANA SAINS

DESAIN SISTEM PENGERING KERUPUK KEMPLANG DENGAN UAP SUPER PANAS BERBAHAN BAKAR BIOMASA Endo Argo Kuncoro
BUANA SAINS Vol 14, No 2 (2014)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.566 KB) | DOI: 10.33366/bs.v14i2.337

Abstract

Penggunaan alat pengering seperti cabinet dryer berbahan bakar minyak (BBM) atau gas (BBG) untuk pengeringan kerupuk kemplang merupakan solusi dalam mengatasi masalah pengeringan yang terkendala cuaca. Umumnya sistem pengeringan ini menggunakan udara panas sebagai medium pengeringan. Namun, pada penelitian ini akan dikembangkan sistem pengeringan kerupuk kemplang dengan menggunakan uap super panas. Penggunaan uap super panas untuk proses pengeringan didasarkan pada sifat termodinamika uap tersebut yang lebih unggul daripada udara pada kondisi yang sama. Rancangan alat pengering dengan uap super panas akan menggunakan sekam sebagai bahan bakar untuk pemanasan boiler. Berdasarkan uji teknis, perhitungan, dan uraian pembahasan yang telah dilakukan terhadap alat pengering kemplang tipe rak menggunakan uap kering super panas maka diperoleh suhu dan kelembaban relatif ruang pengering didapat sebesar 78oC dan 35%. Laju pengeringan rata-rata sebesar 7,01%/jam, kadar air akhir kemplang rata-rata sebesar 7%, dan kebutuhan energi panas total rata-rata 31.419,86 kJ. Efisiensi pengeringan dan efisiensi pemanasan dengan bahan bakar sekam adalah sebesar 7,41% % dan 2,07%. Alat pengering kemplang tipe rak menggunakan sumber panas uap kering super panas dapat diaplikasikan karena memenuhi karakteristik pengeringan.
RANCANG BANGUN DAN UJI TEKNIK KOMPOR BERBAHAN BAKAR LIMBAH BIOMASA PERTANIAN Rahmad Hari Purnomo; Endo Argo Kuncoro; Dian Wahyuni
BUANA SAINS Vol 14, No 2 (2014)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.073 KB) | DOI: 10.33366/bs.v14i2.342

Abstract

The research objective was to design and test of stove using agricultural waste biomass fuel. Engineering design was used in this research. The collected data was presented and tabular and graphical forms. This research was consisted of design, fabrication, technical test and perfomance analysis of stove which used agricultural waste biomass fuel. The observed parameters were combustion operational time, fuel consumption rate, specific gasification rate, combustion efficiency, heat energy input and ash percentage. Results showed that the highest combustion operational time was found on rice husk with magnitude of 0.43 hour and the lowest was found on wood chips with magnitude of 0.22 hour. The highest fuel consumption and gasification rates were found on wood chips with magnitude of 3.92 kg/h and 74.81 kg/m2h, whereas the lowest was found on rice husk with magnitude of 2.33 kg/h and 44.01 kg/m2h. The highest heat energy input value was found on wood chips with magnitude of 5,033.34 kcal, whereas the lowest was found on rice husks with magnitude of 3,411.29 kcal. The highest combustion efficiency was found on rice husk with magnitude of 4.67 % and the lowest was found on acacia leaves of 3.04 %. The highest ash percentage was found at rice husk with magnitude of 30 % and the lowest of 15 % was found on wood chips