Perpindahan Panas Dan Massa Penguapan Falling Film Campuran Uap-Gas Methanol-Air Arah Berlawanan

K. Budhikarjono; Susianto Susianto; N. Soewarno

doi:10.14710/reaktor.9.2.86-93

DOI: https://doi.org/10.14710/reaktor.9.2.86-93

Perpindahan Panas Dan Massa Penguapan Falling Film Campuran Uap-Gas Methanol-Air Arah Berlawanan

*K. Budhikarjono - , Indonesia

Susianto Susianto - , Indonesia

N. Soewarno - , Indonesia

Published: 19 Jun 2017.

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Abstract

Penelitian ini bertujuan mempelajari pengaruh adanya aliran gas/udara terhadap koefisien perpindahan panas dan massa dalam falling film evaporator untuk sistem larutan campuran biner, dan memperoleh persamaan empiris koefisien perpindahan panas dan massa. Penelitian dilakukan dengan menggunakan kolom tegak sepanjang 2 meter dan diameter 2,8 cm. larutan methanol-air dan udara panas dialirkan pada kolom dengan aliran berlawanan arah. Laju alir cairan 20-160 l/jam, konsentrasi umpan sebesar 10-50% methanol dan laju alir gas 0- 2,16 standar m³/jam. Harga yang diperoleh menunjukkan bahwa koefisien perpindahan panas dipengaruhi oleh laju alir umpan dan konsentrasi larutan. Semakin esar laju alir umpan, semkin besar koefisien perpindahan panas, semakin besar konsentrasi larutan, semakin kecil koefisien perpindahan massa. Koefisien perpindahan massa yang dihasilkan berkisar antara 5,6 – 9 Kw/ m₂.K dan koefisien perpindahan massa yang dihasilkan berkisar antara 1,06- 2,73 . 10^-4 m/detik untuk kisaran N_RE,l 1800-6000 dab N_RE,g0-2000.

Kata kunci : falling film evaporator, koefisien perpindahan panas, koefisien perpindahan massa

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Keywords: falling film evaporator, koefisien perpindahan panas, koefisien perpindahan massa

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Article Info

Section: Research Article

Language : INDONESIA

In Volume 09 No. 02 Desember 2005

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