Pengaruh Rasio Step pada Sudden Enlargement Channel terhadap Heat Flux Kondensasi di Porous Media


  • Djoko Hari Praswanto University of Brawijaya
  • Eko Siswanto Universitas Brawijaya
  • Nurkholis Hamidi Universitas Brawijaya



Air Humidity, Flow Conditioner, Heat Flux, Porous Media, Sudden Enlargement


One of the most significant parameter in air conditioning problems is air humidity. A porous media can be used as a heat exchanger component in order to increase the heat transfer performance which is significantly depends on the heat flux values inside of them. To determine the heat flux value, a following test section was modeled in this research. A vapor passed through a channel whereas a particular porous media made of active carbon acted as its heat exchanger media. However, the sudden enlargement at the inlet of channel could affect the homogeneity of temperature distributions and also caused some several turbulencies. The research method is vapor flowed over the porous media for 60 minute with temperature of 300oC.The vapor velocity is varied from 1 m/s to 3 m/s and the step ratio also varied between 0 until 1.66. From the experiment shows the bigger step ratio and vapor velocity results the bigger heat flux and air humidity after passed through the low porous media. Heat transfer was occured in porous media including convection heat transfer with the value of Gr/Re2 smaller than 1.


Sura, Sunarto. A, 2013, Kelembapan Relatif Udara Pada Tempat, Universitas Hasanudin, Makasar.

Hermana Joni dan boedisantoso rachman, 2010. Kondensasi, power point buku ajar, Surabaya.

Setyawan, Eko Y. Et. Al.2014, Heat flux Kondensasi Pada Porous media Arang Tempurung Kelapa, Jurnal Rekayasa Teknik Mesin Universitas Brawijaya, Malang.

Siswanto, Eko, 2012, Study on Heat Transfer Phenomenon and Condensate Flow Dynamics during Condensation in Porous Media, Yamaguchi University., Japan.

Holman, J.P., 1993, Perpindahan Kalor, Edisi 6, terjemah Ir. E. Jafisi, Msc. NewYork : Mc. Graw Hill, Ltd.

Katoh,Y., Katsurayama, H., Nagata, R., and Siswanto, E, 2011, Influence of surface filmed particle of packed bed on wettability, proc. of annual meeting on Japanese Society on Multiphase Flow, in Japanese, 292-293

Siswanto, Eko, Yasuo. Katoh. and Hiroshi Katsurayama, 2010, Forced laminar convective condensation in porous media, Proc. 47th National Heat Transfer Symp., Japan, pp. 135-136.

Rahana, Angga V. Et. Al., 2013, Analisa Pengaruh Kecepatan Udara Masuk Terhadap Distribusi Temperatur Pada Porous Media, Jurnal Rekayasa Teknik Mesin Universitas Brawijaya, Malang.

Zenitha, Ika R. Et. Al., 2013, Analisa Pengaruh Udara Masuk Terhadap Distribusi Temperatur Pada Porous Media, Jurnal Rekayasa Teknik Mesin Universitas Brawijaya.

McDonough, J. M., 2009, Lectures in Elementary Fluid Dynamics: Physics, Mathematics and Application, Lecture Notes, Lexington: Departments of Mechanical Engineering and Mathematics, University of Kentucky.

Jodat. A and Moghiman. M, 2012, An experimental assessment of the euapation correlations for natural, forced and combined convection regimes, Journal of Mechanical Engineering Science, 226: 145 originally published online 14 September 2011.

Umar,M.R., 2013, Penuntun Ekologi Umum,Universitas Hasanuddin,Makassar.