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

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. ======================================================================================================================== 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: https://repository.its.ac.id/id/eprint/71824

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