?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=SIMULASI+TERMAL+PROSES+TOREFAKSI+BIOMASSA+PADA%0D%0A%0D%0AREAKTOR+KONTINU+TIPE+TUBULAR&rft.creator=MARIDOSEN+PURBA%2C+1415021057&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Torefaksi+merupakan+metode+pengolahan+biomassa+dengan+proses%0D%0Atermokimia+tanpa+atau+dengan+oksigen+yang+terbatas+dan+memiliki+kisaran%0D%0Atemperatur+kerja+sebesar+200%E2%80%93300oC+dan+memiliki+waktu+tinggal+pada+reaktor%0D%0Aselama+30+menit.+Proses+torefaksi+memanfaatkan+proses+perpindahan+panas+dari%0D%0Adinding+reaktor+ke+biomassa.+Proses+torefaksi+yang+baik+dapat+dilihat+keluaran%0D%0Abiomassa+yang+telah+mencapai+temperatur+kerja+torefaksi.+Pengukuran+temperatur%0D%0Apada+biomassa+secara+pengujian+torefaksi+terkendala+dengan+alat+yang+sulit%0D%0Adiletakan+didalam+reaktor.+Simulasi+merupakan+salah+satu+cara+yang+dapat%0D%0Aditempuh+untuk+mengetahui+distribusi+temperatur+didalam+reaktor.+Simulasi+juga%0D%0Adapat+membantu+analisa+untuk+penelitian+torefaksi+secara+aktual.%0D%0APenelitian+ini+menggunakan+perangkat+lunak+untuk+melakukan+simulasi.%0D%0APerangkat+lunak+yang+digunakan+harus+dapat+memodelkan+simulasi+aliran+fluida%2C%0D%0Aperpindahan+panas%2C+dan+harus+memilki+akurasi+yang+baik.+Perangkat+lunak+Ansys%0D%0AFluent+19.2+salah+satu+piranti+yang+memilki+kriteria+yang+baik+untuk+menganalisa%0D%0A%0D%0Aii%0D%0A%0D%0Aperpindahan+panas+dan+aliran+fluida.+Penelitian+ini+memodelkan+aliran+material%0D%0Abiomassa+sebagai+aliran+fluida.+Reaktor+yang+digunakan+dalam+penelitian+ini%0D%0Aadalah+reaktor+tipe+tubular+dengan+panjang+1%2C6+meter+dan+kapasitas+produksi+dari%0D%0Areaktor+ini+sebesar+5+kg%2Fjam.+Simulasi+ini+memvariasikan+temperatur+dinding%0D%0Areaktor+secara+konstan+dengan+nilai+sebesar+250oC%2C+275oC%2C+dan+300oC.+Penelitian%0D%0Aini+juga+memvariasikan+konduktivitas+termal+sebesar+0%2C081+W%2Fm.K%2C+0%2C158+W%2Fm.K%2C%0D%0A0%2C209+W%2Fm.K%2C+0%2C3+W%2Fm.K%2C+dan+0%2C419+W%2Fm.+K+untuk+melihat+keseragaman%0D%0Adistribusi+temperatur+pada+aliran+biomassa.+Hasil+simulasi+ini+akan+divalidasi%0D%0Adengan+proses+penghitungan+secara+analitik.%0D%0ADari+penelitian+ini+diperoleh+data+hasil+simulasi+dan+penghitungan%0D%0Amempunyai+selisih+nilai+pada+sisi+keluaran+biomassa+sebesar+17oC%2C+18oC%2C+dan%0D%0A20oC+untuk+temperatur+dinding+reaktor+250oC%2C+275oC%2C+dan+300oC+berturut-turut.%0D%0ATemperatur+biomassa+disisi+keluaran+diperoleh+data+sebesar+229oC%2C+253oC%2C+dan%0D%0A275oC+untuk+temperatur+dinding+reaktor+250oC%2C+275oC%2C+dan+300oC+berturut-turut.%0D%0ATemperatur+keluaran+biomassa+rata-rata+250oC%2C+275oC%2C+dan+300oC+membutuhkan%0D%0Atemperatur+reaktor+masing-masing+sebesar+272oC%2C+300oC%2C+dan+327oC.+Disrtribusi%0D%0Atemperatur+keluaran+biomassa+yang+relatif+seragam+diperoleh+dengan%0D%0Amenggunakan+konduktivitas+termal+0%2C3+W%2Fm.K+dan+0%2C419+W%2Fm.K+dengan+selisih%0D%0Atemperatur+sisi+luar+dan+dalam+aliran+biomassa+dibawah+1oC.%0D%0AKataKunci%3A+%3A+torefaksi%2C+reaktor+tubular%2C+Ansys+Fluent.%0D%0ATorrefaction+is+a+biomass+processing+method+by+a+thermochemical+process%0D%0Awithout+or+with+limited+oxygen+in+a+working+temperature+range+of+200+%E2%80%93+300+%C2%B0C%0D%0Aand+has+a+residence+time+in+a+reactor+for+30+minutes.+Torrefaction+process+utilizes%0D%0Athe+process+of+heat+transfer+from+the+reactor+wall+to+biomass.+A+good+torrefaction%0D%0Aprocess+can+be+seen+from+the+output+of+biomass+that+has+reached+the+working%0D%0Atemperature+of+the+torrefaction.+The+Measurement+of+temperature+in+biomass+by%0D%0Atorrefaction+testing+is+constrained+by+tools+that+are+difficult+to+place+in+the+reactor.%0D%0ASimulation+is+one+way+that+can+be+taken+to+determine+the+temperature+distribution%0D%0Ain+the+reactor.+Simulations+can+also+help+the+analysis+of+actual+torrefaction%0D%0Aresearch.%0D%0AThis+research+uses+software+to+conduct+simulations.+The+software+used%0D%0Amust+be+able+to+model+fluid+flow+simulations%2C+heat+transfer%2C+and+must+have+good%0D%0Aaccuracy.+Ansys+Fluent+19.2+software+is+a+device+that+has+good+criteria+for%0D%0Aanalyzing+heat+transfer+and+fluid+flow.+These+research+models+the+flow+of+biomass%0D%0A%0D%0Aiv%0D%0A%0D%0Amaterial+as+fluid+flow.+The+reactor+used+in+this+research+is+a+tubular+type+reactor%0D%0Awith+a+length+of+1.6+meters+and+the+production+capacity+of+this+reactor+is+5%0D%0Akg%2Fhour.+This+simulation+varies+the+temperature+of+the+reactor+wall+constantly+with%0D%0Avalues+of+250oC%2C+275oC%2C+and+300oC.+This+study+also+varied+the+thermal%0D%0Aconductivity+of+0.081W%2Fm.K%2C+0.158W%2Fm.K%2C+0.209W%2Fm.K%2C+0.3W%2Fm.K%2C+and%0D%0A0.419W%2Fm.K+to+see+the+uniformity+of+temperature+distribution+in+the+biomass%0D%0Aflow.+The+results+of+this+simulation+will+be+validated+by+an+analytical+calculation%0D%0Aprocess.%0D%0AFrom+this+research%2C+simulation+and+calculation+data+obtained+from+the%0D%0Avalue+of+the+difference+in+the+output+side+of+the+biomass+were+17oC%2C+18oC%2C+and%0D%0A20oC+for+the+reactor+wall+temperature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