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ITS » Undergraduate Theses » Teknik Mesin
Posted by at 09/08/2012 15:12:45  •  3732 Views


Author :
SETIAWAN, ADE BAGUS  ( 2106100145 )


Turbin gas tipe RB 211-24GT produksi Rolls Royce dengan daya 33 MW temperatur udara masuk 590F tekanan udara masuk 147 inchi H2O digunakan sebagai pembangkitdi PT. Mitra Energi Batam. Pada kondisi actual tingginya temperatur ambient menyebabkan turbin gas tersebut hanya menghasilkan daya 25 MW. Hal ini dikarenakan tingginya temperatur ambient mengakibatkan penurunan densitas udara sehingga dengan putaran yang sama laju aliran masadayadan efisiensi akan menurun. Untuk mengatasi hal tersebut telah dilakukan rancang ulang pada intermediate compressor sesuai dengan kondisi di lapangan sehingga menghasilkan laju aliran masa seperti kondisi yang diharapkan. Hal ini akan mengakibatkan parameter pada masukan high pressure compressor berubah sehingga effisiensinya tidak maksimum. Perancangan sudu kompresor aliran aksial pada Turbin gas tipe RB 211-24GT diawali dengan mengetahui pengaruh perancangan ulang pada intermediate compressor terhadap kerja turbin gas. Selanjutnya ditentukan parameter perancangan pada inlet high pressure compressor yang berasal dari keluaran kompresor intermediate yang sudah di desain ulang. Setelah itu dilakukan perancangan sudu gerak kompresor pada setiap stage pada kompresor high pressure untuk mendapatkan kerja maksimum dengan putaran yang diinginkan. Dari perancangan ini didapatkan dimensi dan profil sudu kompresor high pressure pada turbin gas tipe RB 211-24GT yang sesuai dengan parameter keluaran dari kompresor intermediate untuk menghasilkan kerja dan efisiensi yang maksimum pada putaran yang diinginkan. Putaran disesuaikan dengan putaran normal operasi kompresor yaitu 9171 rpm.


Gas turbine type RB 211-24GT Rolls Royce manufactured by Roll Royce is used as a power plant on Batam island. The power that can be generated from gas turbines is 33MW in 150 C ambient conditions of temperature and pressure of 1013 mbar. However at present the gas turbines only generate 25MW of power at an ambient temperature of 320C. This is due to the high ambient temparatur in the field that does not correspond to inlet temperature set for the ideal conditions of the gas turbine. The high ambient temperature results in air density decrease so that the mass flow rate power and efficiency will drop. To overcome these conditions axial compressor re-design in intermediate compressor have done according to actual condition in field so it can produce mass flow as expected. In other side it caused changing at inlet parameter in high pressure compressor so the efficiency is not maximal. The design of axial flow compressor blades in gas turbine type RB 211-24GT begins with knowing the influence of re-design intermediate compressor on gas turbine work. Furthermore the design parameters specified in inlet of high compressors based on outlet of re-designed intermediate compressor. After this step re-design has done by re-design at rotor in each stage at high pressure compressor to get maximum power and efficiency at an expected rotation. Obtained from this design got dimensions and blade profile on high pressure compresssor of gas turbine RB 211-24GT is in line with the outlet parameter of intermediate compressor to produces a maximum compressor efficiency and power of the gas turbine at expected rotation. The expected rotation is the actual rotation of the compressor in actual condition at 9171 RPM.

KeywordsAxial flow compressors; Gas turbines; Blades; Stage
Subject:  Turbin gas
  1. Prof. DR. Ir. I Made Arya Djoni, M.Sc
Date Create: 07/02/2012
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-21001120000485
Collection ID: 21001120000485
Call Number: RSM 621.51 Set p

Undergraduate Thesis of Mechanical Engineering, RSM 621.51 Set p, 2012

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Copyright @2012 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library

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  1.  ITS-Undergraduate-20539-Abstract_id.pdf - 181 KB
  2.  ITS-Undergraduate-20539-Abstract_en.pdf - 180 KB
  3.  ITS-Undergraduate-20539-2106100145-Conclusion.pdf - 331 KB

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