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ITS » Undergraduate Theses » Teknik Kimia Ekstensi S1 Posted by astutiknq@its.ac.id at 26/04/2010 11:19:37 • 1713 Views
PERPINDAHAN PANAS DAN MASSA PADA FALLING FILM EVAPORATOR UNTUK SISTEM NIRA DENGAN UDARA
HEAT AND MASS TRANSFER OF FALLING FILM EVAPORATOR FOR CANE SUGAR SOLUTION WITH AIR SYSTEM
Created by :
Umar Syahid F. ( 2303109028 )
| Subject: | Transmisi panas Perpindahan massa | | Alt. Subject : | Heat-transmission Mass transfer
| | Keyword: | Falling film evaporator Laminer Turbulen Koefisien
Transfer panas Persamaan empiris |
[ Description ]
Evaporator banyak digunakan pada industri-industri
kimia khususnya pada industri obat-obatan dan bahan makanan.
Falling film evaporator digunakan untuk memekatkan fluidafluida
yang sensitif terhadap panas. Salah satu cara untuk
meningkatkan kemampuan falling film evaporator adalah dengan
penghembusan udara yang bertujuan untuk menurunkan tekanan
uap air, sehingga akan terjadi penurunan titik didih larutan.
Penelitian ini bertujuan untuk mengetahui pengaruh laju
alir umpan terhadap koefisien perpindahan panas, pengaruh
konsentrasi terhadap koefisien perpindahan panas, dan pengaruh
laju alir udara terhadap penurunan titik didih larutan.
Penelitian ini dilakukan dengan menggunakan kolom
tegak sepanjang 2 meter dengan diameter dalam 28 mm dan
diameter luar 34 mm. Larutan nira dengan berbagai konsentrasi,
didistribusikan melalui distributor over flow weir membasahi
sepanjang kolom, kemudian kontak dengan udara panas searah di
dalam kolom, variabel yang dilakukan didalam penelitian ini,
antara lain laju alir liquid 20 l/jam sampai 160 l/jam, laju alir gas
0, 1, 2 ,4, dan 6 m3/j, dan konsentrasi larutan umpan sebesar 1 %
sampai 2 %.
Hasil yang diperoleh menunjukkan bahwa Laju alir
umpan semakin besar membuat aliran semakin turbulen dan
koefisien perpindahan panas juga semakin besar. Semakin pekat
konsentrasi larutan umpan semakin kecil koefisien perpindahan
panas. Laju alir udara tidak berpengaruh signifikan terhadap
koefisien perpindahan panas, berpengaruh untuk menurunkan titik
didih larutan.
Alt. Description
Evaporator is used mostly by chemical industries,
especially by food and medicine industries for thickening fluids
which are sensitive to heat. One of the ways to improve falling
film evaporator is by blowing air to decrease. Vapor pressure, so
that boiling point of the solution will decrease.
The research aims at knowing the influence of feed flow
on heat transfer coefficient, the influence of concentration on heat
transfer coefficient as well as the influence of air flow
acceleration on lowering solution boiling point.
In this research, 2 meter long upright column having
inner diameter of 28 mm and outer diameter 34 mm was used,
after that Nira solution having different concentration was
distributed through over flow weir distribution, wetting the whole
column and then it was contacted with hot air from opposite
direction in the column. The variables used in this research are
liquid flow acceleration of 20 l/hour, gas flow acceleration of 0,
1, 2, 4 and 6m3/hour and bait solution concentration of 1% up to
2%.
Big acceleration of liquid bait flow liquid will make the
flow more turbulent and heat transfer coefficient bigger. Result of
which is obtained indicate that ever greaterly of rate of flow of
liquida hence is ever greater of coefficient transfer of heat, on the
contrary condensed progressively condensation concentration
bait smaller coefficient transfer of heat. While air rate of flow
have an effect on big in degrading dot boiled.
| Contributor | : |
- Prof. Dr. Ir. Kusno Budikardjono, MT
- Dr.Ir.Susianto,DEA
| | Date Create | : | 26/04/2010 | | Type | : | Text | | Format | : | pdf | | Language | : | Indonesian | | Identifier | : | ITS-Undergraduate-3100010038281 | | Collection ID | : | 3100010038281 | | Call Number | : | RSK 660.284 27 Uma p |
Source : Undergraduate Thesis of Chemical Engineering Department, RSK 660.284 27 Uma p, 2009
Coverage : ITS Community Only
Rights : Copyright @2009 by ITS Library. This publication is protected by copyright and permission should be obtained from the ITS Library prior to any prohibited reproduction, storage in a retrievel system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to ITS Library
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[ Free Download - Free for All ]
- ITS-Undergraduate-9483-2303109028-PERPINDAHAN PANAS DAN MASSA PADA FALLING FILM EVAPORATOR UNTUK SISTEM NIRA DENGAN UDARA.pdf - 37 KB
 - ITS-Undergraduate-9483-2303109028-HEAT AND MASS TRANSFER OF FALLING FILM EVAPORATOR FOR NIRA SOLUTION WITH AIR SYSTEM.pdf - 36 KB
 - ITS-Undergraduate-9483-2303109028-Approval_Sheet.pdf - 17 KB
 - ITS-Undergraduate-9483-2303109028-Abstract_id.pdf - 27 KB
 - ITS-Undergraduate-9483-2303109028-Abstract_en.pdf - 27 KB
 - ITS-Undergraduate-9483-2303109028-Preface.pdf - 24 KB
 - ITS-Undergraduate-9483-2303109028-Table_of_Content.pdf - 9 KB
 - ITS-Undergraduate-9483-2303109028-Illustrations.pdf - 13 KB
 - ITS-Undergraduate-9483-2303109028-Notations.pdf - 38 KB
 - ITS-Undergraduate-9483-2303109028-Chapter1.pdf - 39 KB
 - ITS-Undergraduate-9483-2303109028-Conclusion.pdf - 29 KB
 - ITS-Undergraduate-9483-2303109028-Bibliography.pdf - 22 KB
 - ITS-Undergraduate-9483-2303109028-Biography.pdf - 77 KB

[ FullText Content - Please, register first ]
1. ITS-Undergraduate-9483-2303109028-Chapter2.pdf - 270 KB  2. ITS-Undergraduate-9483-2303109028-Chapter3.pdf - 64 KB  3. ITS-Undergraduate-9483-2303109028-Chapter4.pdf - 105 KB  4. ITS-Undergraduate-9483-2303109028-Enclosure_A.pdf - 121 KB  5. ITS-Undergraduate-9483-2303109028-Enclosure_B.pdf - 536 KB 
[ Link of Contents]
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