Efek Perbedaan Jumlah dan Material Tube pada Distribusi Temperatur Tube Heat Exchanger dalam Kompor (Studi Kasus Di Industri Tempe Kecamatan Tenggilis Mejoyo Surabaya)
Submission Date: 2013-08-01 07:26:03
Accepted Date: 2013-08-15 14:50:08
Abstract
Pemakaian heat exchanger pada kompor industri tempe di kelurahan Tenggilis Mejoyo Surabaya mengaplikasikan tube heat exchanger dengan jumlah tube 4 dan material tembaga. Pada pemakaian awal mampu memperlama penggunaan bahan bakar hingga 3 hari. Proses produksi heat exchanger memerlukan biaya hingga 2,5 juta rupiah. Untuk dapat mengatasi masalah tersebut maka dilakukan penelitian tentang performansi heat exchanger dengan memvariasikan material dan jumlah tube. Masalah ini disimulasikan dengan computational fluid dynamics. Simulasi dilakukan pada jumlah grid 388149 dan model turbulensi dengan nilai deviasi terhadap temperatur ukur sebesar 1,0%. Hasil penelitian menunjukkan bahwa performansi dengan jumlah tube 6 dan material besi memiliki performansi yang hanya berbeda sebesar 2395,188 Watt dan nilai temperatur keluaran hanya berbeda 2,338 K dengan 4 tube tembaga. Nilai investasi 6 tube besi juga lebih rendah dibandingkan dengan 4 tube tembaga senilai Rp 4.335.866,00 dan perbedaan nilai payback period hingga 4,22 bulan.
Keywords
heat exchanger; performansi; payback period
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