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ITS » Undergraduate Theses » Teknik Mesin
Posted by system at 17/05/2010 11:32:12  •  3704 Views


DESAIN EVAPORATOR DAN PEMILIHAN TURBIN UAP PADA ORGANIC RANKINE CYCLE DENGAN FLUIDA KERJA R-134A

EVAPORATOR DESIGN AND SELECTION OF STEAM TURBINES IN ORGANIC RANKINE CYCLE WITH R-134 AS WORKING FLUID

Author :
PANJAITAN, FRANS APRIO MARULI ( 2105100109 )




ABSTRAK

Organic Rankine Cycle ORC merupakan suatu sistem pembangkit tenaga yang mampu memanfaatkan waste energy dengan menggunakan fluida organik yang mampu menguap pada temperatur rendah. Karena ORC belum banyak dikenal luas maka diperlukan rancangan untuk komponen-komponen penyusunnya. Pada tugas akhir ini dilakukan desain pada evaporator dengan jenis compact heat exchanger - continous fin circular tubes untuk membangkitkan uap. Analisa termodinamika digunakan untuk mendapatkan besarnya panas yang dibutuhkan oleh sistem. Analisa perpindahan panas dengan metode beda temperatur rata-rata logaritmik dilakukan untuk mendapatkan dimensi dari 3 region yaitu region 1 zona subdingin region 2 zona evaporasi serta region 3 zona superpanas. aliran di dalam tube di desain sesuai dengan kecepatan maksimum yang diijinkan untuk aliran di dalam tube karena vibrasi sehingga jumlah baris dapat diketahui. Pemilihan turbin uap untuk Organik Rankine cycle juga dilakukan menggunakan analisa segitiga kecepatan untuk mendapatkan efisiensi relatif dari turbin yang akan dipilih. Analisa penurunan kalor pada nosel dan sudu gerak dilakukan untuk mendapatkan efisiensi overall turbin sehingga dari dua analisa tersebut didapatkan dimensi turbin uap yang sesuai dengan sistem ini. Perancangan organic rankine cycle dengan daya keluaran 100 KWe menghasilkan dimensi evaporator yang mampu membangkitkan 1029 Kw uap dengan dimensi 15.75 x 15 x 17.5 dengan panjang tube untuk region 1 sebesar 307.05 region 2 sebesar 988.64 dan region 3 sebesar 149.21. Pada pemilihan turbin didapatkan efisiensi hasil perancangan turbin sebesar 79 selain itu juga didapatkan diameter minimum dan diameter maksimum nozzle untuk turbin uap sebesar 23 mm dan 27 mm diameter turbin 0.62 m dan tinggi sudu sebesar 30 mm.


ABSTRACT

Organic Rankine Cycle ORC is a power generation system that capable for utilizing waste energy by using organic fluid which can evaporate at low temperatures. Because ORC has not been widely known it is necessary to plan for its components. This final project performed on the evaporator design with compact type heat exchanger - continuous circular fin tubes to generate steam. Thermodynamic analysis is used to obtain the amount of heat needed by the system. Heat transfer analysis with logarithmic mean temperature difference to get the dimensions of the three region region 1 subcooled zone region 2 evaporation zone and region 3 superheated zone. The flow in the tube in the design is in the accordance with the maximum permitted speed for the flow in the tube due to vibration so that the number of lines can be identified. The selection of steam turbine for the Organic Rankine cycle analysis was also performed using the velocity triangle to get the relative efficiency of the turbine that will be chosen. Analysis of heat reduction in the nozzle and the blade motion is to get the overall efficiency of the turbine so that with these two analyses the steam turbine dimension that suited with this system acquired. The design of organic Rankine cycle with a power output of 100 Kwe appropriate with the evaporator dimensions that could generate 1029 Kw steam with the dimensions of 15.75 x 15 x 17.5 with a length of tube of 307.05 for 1st region 988.64 for 2nd region and 149.21 for 3rd regions. In the selection of turbine the turbine design results for the efficiency of 79 while in the design also resulted the minimum diameter and maximum diameter nozzle for a steam turbine of 23 mm and 27 mm diameter 0.62 m and the turbine blade height of 30 mm.



KeywordsORC; Turbin uap; compact heat exchanger; turbin impuls; geothermal
 
Subject:  Turbin uap
Contributor
  1. Dr.Eng. Ir. Prabowo, M.Eng
Date Create: 16/02/2010
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-3100010038504
Collection ID: 3100010038504
Call Number: RSM 621.402 5 Pan d


Source
Undergraduate Theses, Mechanical Engineering, RSM 621.402 5 Pan d, 2010

Coverage
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Rights
Copyright @2010 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-9922-Abstract_id.pdf - 30 KB
  2.  ITS-Undergraduate-9922-Abstract_en.pdf - 26 KB
  3.  ITS-Undergraduate-9922-Conclusion.pdf - 45 KB




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