OPTIMASI HEAT EXCHANGER TIPE PLATE CHEVRON DENGAN PEMBERSIHAN KERAK METODE CHEMICAL SPRAY PADA PLTU INDRAMAYU ( OPTIMIZATION OF CHEVRON PLATE TYPE HEAT EXCHANGER USING CHEMICAL SPRAY SCALE CLEANING METHOD IN PLTU INDRAMAYU )

Haqni, Firdaus Kurniawan and Mangestiyono, Wiji (2015) OPTIMASI HEAT EXCHANGER TIPE PLATE CHEVRON DENGAN PEMBERSIHAN KERAK METODE CHEMICAL SPRAY PADA PLTU INDRAMAYU ( OPTIMIZATION OF CHEVRON PLATE TYPE HEAT EXCHANGER USING CHEMICAL SPRAY SCALE CLEANING METHOD IN PLTU INDRAMAYU ). Undergraduate thesis, D3 Kerjasama PT. PLN bidang Teknik Mesin.

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Abstract

Plate heat exchanger (PHE) merupakan alat penukar kalor yang berfungsi untuk mendingin kan air demin yang disirkulasikan untuk mendinginkan lube oil pada sistem PLTU. PHE pada PLTU Indramayu telah digunakan sejak 2011 dan mengalami penurunan efisiensi karena terjadi pengotoran. Melihat pentingnya peran PHE, maka dilakukanlah analisa mengenai efisiensi PHE ketika kondisi kotor dan kondisi setelah dibersihkan. Sehingga akan diketahui mengenai penyabab pengotoran adalah fouling dan scaling. Data yang diambil adalah berdasarkan data yang berada di central control room. Pengambilan data yang dibutuhkan adalah temperatur masuk dan keluar dari fluida closed cooling dan open cooling. Dimana pengambilan data dilakukan selama 20 hari. Sehingga dapat dibandingkan hasil efisiensi alat ketika kotor dan ketika bersih. Maka dalam pemeliharaan alat PHE dapat dilakukan secara tepat. Dari hasil perhitungan, nilai efektifitas alat ketika kondisi kotor pada awalnya yaitu sebesar 61,05% dan menurun sampai 49,81%. Namun setelah dilakukan pembersihan kerak dengan metode chemical spray, maka didapatkan nilai efektifiasnya meningkat kembali menjadi sebesar 62,95%. Dan dari data alat kondisi bersih hingga pengujian ke – 10, nilai efektifitasnya sebesar 64,89%. Hal tersebut menunjukkan bahwa pembersihan dengan chemical spray sangat berpengaruh terhadap suhu keluaran fluida dari plateh heat exchanger, sehingga berimbas kepada efektifitas alat tersebut. Kata Kunci : Plate Heat Exchanger, Efektifitas, Fouling, Scaling Plate heat exchanger (PHE) is a heat exchanger that serves to cool the demin water is circulated to cool the lube oil plant system. PHE in Indramayu power plant has been used since 2011 and decreased efficiency due to fouling. Seeing the importance of the role of PHE, we conducted an analysis of the efficiency of PHE when dirty condition and the condition after cleaning. So they will know about the different causes of fouling are fouling and scaling. The data taken is based on data that is in the central control room. Retrieval of data required is the temperature in and out of the closed cooling fluid and open cooling. Where the data collection is done for 20 days. So it can be compared to the results of the efficiency of the tool when it is dirty and when the net. So in PHE equipment maintenance can be done accurately. From the calculation, the value of the effectiveness of the tool when the filthy conditions at first in the amount of 61.05% and decreased to 49.81%. But after scaling with chemical spray method, then the value obtained by efektifiasnya rose again to 62.95%. And from the data appliance clean condition to test for - 10, the value of effectiveness of 64.89%. It shows that cleaning with chemical spray affects the fluid outlet temperature of plateh heat exchanger, so that the impact to the effectiveness of these tools. Keyword : Plate Heat Exchanger, Effectiveness, Fouling, Scaling

Item Type:Thesis (Undergraduate)
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Faculty of Engineering > Diploma in Mechanical Engineering
Faculty of Engineering > Diploma in Mechanical Engineering
ID Code:47329
Deposited By:Mrs Wahyu D3 Teknik Mesin
Deposited On:11 Jan 2016 09:02
Last Modified:11 Jan 2016 09:02

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