Afifah, Esti Nur (2015) Analisis Pengaruh Perbedaan Material Tube Pada Kondensor Unit 3 Dan Unit 4 PT. PJB UP Gresik Ditinjau Dari Laju Perpindahan Panas - Analysis Of Unit 3 And 4 Condenser Tubes Material Difference In PT PJB Up Gresik Reviewed By Rate Of Heat Transfer. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tube kondensor sebagai media perpindahan panas dari
steam ke cooling water memiliki peran yang penting. Oleh karena
itu diperlukan berbagai pertimbangan dalam pemilihan material
tube kondensor dilihat dari berbagai sisi. Material tube
kondensor di PT PJB UP Gresik merupakan alumunium brass
yang terdiri dari 77.5% copper, 20.5% zinc dan 2% aluminium.
Material bawaan ini sering mengalami kebocoran, oleh karena
itu, PT PJB UP gresik melakukan inovasi dengan mengganti
material tube kondensor unit 3 dengan titanium pada tahun 1999.
Dengan penggantian material ini perlu dilakukan pengkajian
lebih lanjut dari berbagai aspek, seperti laju perpindahan panas,
nilai NTU-effectiveness dan maintenance.
Pada tugas akhir ini proses perhitungan dilakukan
dengan menggunakan analisis termodinamika dan perpindahan
panas dengan data kevakuman dan tempearatur yang sama agar
hasil yang didapatkan relevan dan terfokus pada perbedaan
material tube kondensor.
Hasil yang didapatkan berupa nilai laju perpindahan
panas yang lebih besar di unit 4 yakni 6,08 kW pada zona
desuperheating, 74.314 kW pada zona condensing dan 49,7 pada
zona subcooling. Pada unit 3, laju perpindahan panas pada zona
desuperheating sebesar 6,07 kW, pada zona condensing sebesar
69.071 kW dan pada zona subcooling sebesar 49,41 KW.
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Condenser’ tubes as a medium of heat transfer from steam
to cooling water has an important purpose. Therefore we need a
variety of considerations in the selection of the condenser tube
material viewed from all side. Condenser’ tubes material in PT
PJB UP Gresik are aluminum brass composed of 77.5% copper,
20.5% zinc and 2% aluminum. This innate material often leak,
therefore, PT PJB UP Gresik did an inovation by replacing the
tubes made of alumunium brass in unit 3 by the tubes made of
titanium in 1999. With the replacement of this material needs to a
further studied of various aspects, such as the rate of heat
transfer, the value of NTU-effectiveness and maintenance.
In this final project, process of calculation is done by using
thermodynamics and heat transfer analysis that used the same
data of vacuum and temperature so that the results obtained more
relevant and focused on the difference of material condenser’
tubes.
The results obtained by value of the rate of heat transfer
which is unit 4 is greater than unit 3. The rate of the heat transfer
are 6,08 kW, 74.314 kW and 49,7 kW at desuperheating zone,
condensing zone and subcooling zone respectively. Whereas in
unit 3 the rate of heat transfer are 6,07 kW, 69.071 kW and 49,41
kW at desupereheating zone, condensing zone and subcooling
zone respectively.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSM 621.402 2 Afi a |
| Uncontrolled Keywords: | effectiveness, kondensor, laju perpindahan panas, material, tube, condenser, effectiveness, material, rate of heat trasfer, tube |
| Subjects: | Q Science > QC Physics > QC320 Heat transfer |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering |
| Depositing User: | ansi aflacha |
| Date Deposited: | 15 Nov 2019 08:31 |
| Last Modified: | 15 Nov 2019 08:31 |
| URI: | http://repository.its.ac.id/id/eprint/71824 |
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