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Agus R. Hoetman
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Computer Science & IT Energy

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ANALISIS ENERGI DAN EKSERGI PENGERINGAN LAPISAN TIPIS TEMU PUTIH Manalu, Lamhot P.; Tambunan, Armansyah H.; Nelwan, Leopold O.; Hoetman, Agus R.
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.478 KB)

Abstract

This paper is concerned with the energy and exergy analyses of the thin layer drying process of temu putih (Curcuma zedoaria (Berg.) Rosc) at three different air temperatures (40, 50 and 60 oC) and air relative humidities (RH 20%, 40% and 60%) using a laboratory dryer. Using the first law of thermodynamics, energy analysis was carried to estimate the amounts of energy gained from air drying and the ratios of energy utilization. However, exergy analysis was accomplished to determine exergy losses and exergy efficiencies during the  drying process by applying the second law of thermodynamics. The values of energy and exergy efficiencies were found to be in the range of 23.5 - 49.1% and 3.8-14.1% from 40 to 60 oC, respectively,  while from RH 20% to 60% its values are 48.4-62.8% and 13.6-14.6%, respectively.
ANALISIS ENERGI DAN EKSERGI PENGERINGAN LAPISAN TIPIS TEMU PUTIH Manalu, Lamhot P.; Tambunan, Armansyah H.; Nelwan, Leopold O.; Hoetman, Agus R.
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.478 KB)

Abstract

This paper is concerned with the energy and exergy analyses of the thin layer drying process of temu putih (Curcuma zedoaria (Berg.) Rosc) at three different air temperatures (40, 50 and 60 oC) and air relative humidities (RH 20%, 40% and 60%) using a laboratory dryer. Using the first law of thermodynamics, energy analysis was carried to estimate the amounts of energy gained from air drying and the ratios of energy utilization. However, exergy analysis was accomplished to determine exergy losses and exergy efficiencies during the drying process by applying the second law of thermodynamics. The values of energy and exergy efficiencies were found to be in the range of 23.5 - 49.1% and 3.8-14.1% from 40 to 60 oC, respectively, while from RH 20% to 60% its values are 48.4-62.8% and 13.6-14.6%, respectively.
Co-Authors Armansyah H. Tambunan Lamhot P. Manalu Leopold O. Nelwan