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All Journal IPTEK The Journal for Technology and Science Jurnal Riset Teknologi Industri
Sulharman Sulharman
Baristand Industri Samarinda
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Uji Unjuk Kerja Alat Pengolah Tepung Pisang di Kecamatan Loa Kulu Sulharman, Sulharman
Jurnal Riset Teknologi Industri Vol 1 No 2 Desember 2007
Publisher : Balai Riset dan Standardisasi Industri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (846.107 KB) | DOI: 10.26578/jrti.v1i2.1340

Abstract

East Kalimantan has abundant potencies of horticultural comodity of banana. The production of banana is about 25,216 ton/ year harvested from the area of 4,784 hectares (Dinas Pertanian Tanaman Pangan Propinsi Kaltim, 2002). Mostly the banana variety is pisang kepok (Musa Acuminax Balbisiana Colla) that in certain stadium can produce high carbohydrate and it is used as raw material of flour for cake and infant food industries. Currently there is a set of machines to make banana flour in agribussines sub terminal in the residence of Loa Kulu of Kulai Kertanegara Regency.To know exactly the machines performances, it is needed to conduct a performance test to every machine involved. The tests conducted in Loa Kulu showed that the actual capacity of slicing in avarage is 177kg / hour with the thickness avarage of 2 mm and the efficiency of the slicer is 27,7% on the other hand, the strainer capacity is about 1,75- kg / minute or in avarage 2,52 kg/minute. It has an avarage rendemen of 79 % and lost in process of 2,81 % more over; the dryer capacity is 11,39 kg /hour and it also has rendemen and lost in process of 24,84 % and 4,79 % respectively. In additioan, by using  a system of heat exchanger the efficiency of dryer becomes 20,49 %. Finally the disk mills making has a rendemen 87,80 % and  lost in process of 2, 56 %.
Numerical Study Characteristics of Heat Transfer on Staggered Cylinder Arrangement Sulharman, Sulharman; Setiawan, M. Yasep
IPTEK The Journal for Technology and Science Vol 23, No 3 (2012)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v23i3.5

Abstract

This research was conducted to examine the characteristics of heat transfer and heat flux fluctuations of staggered cylinder arrangement. The parameters in this study is Reynolds 8.8x104 , inlet velocity of 1 m/s and inlet temperature of 600C. Numerical model used is a 2D model-URANS turbulence model is k-omega SST. The results of this study indicate that increased flow velocity in the narrow area on the second row and third row caused by the staggered arrangement. This led to the distribution of the local Nusselt third highest row two and row after row of the lowest. Highest temperature distribution found in the area and the intensity of the turbulent wake in the third row higher value this is due to the influence of turbulence on the previous line and the arrangement of the cylinders. Effect of heat flux variation of the average Nusselt number appears lower in the heat flux 600 W/m2 than 200 W/m2 and 1000 W/m2 , but the third row average Nusselt values coincide with each other. While the average turbulent intensity increases towards the downstream. In the third row with a heat flux of 600 W/m2 has the highest turbulence intensity, while for the heat flux and heat flux of 200 W/m2 1000 W/m2 intensity turbulennya coincide with each other.
Co-Authors M. Yasep Setiawan