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All Journal Eksergi: Jurnal Teknik Energi
Mochammad Denny Surindra
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Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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ANALISIS EFISIENSI PRESSURE EXCHANGER (PX) DI SEA WATER REVERSE OSMOSIS (SWRO) PADA SEA WATER DESALINATION PLANT Mochammad Denny Surindra
Eksergi Vol 9, No 3 (2013): SEPTEMBER 2013
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.409 KB) | DOI: 10.32497/eksergi.v9i3.173

Abstract

Pressure exchanger merupakan alat penukar tekanan dari aliran fluida bertekanan tinggi menjadi aliran fluida bertekanan  rendah ataupun sebaliknya.  PX digunakan dalam reverse osmosis system yang bertujuan untuk memanfaatkan tekanan dari reject water untuk menambah tekanan sea water sebelum masuk first reverse osmosis. Pada sistem reverse osmosis di PLTU Paiton Unit 9 mempunyai 2 area PX yang setiap areanya terdiri dari 5 buah PX yang disusun secara parallel . Oleh sebab itu perlu mengetahui efisiensi kinerja dari PX dalam menghasilkan fresh water  akan menjadi tujuan dari paper ini. Reject water keluar RO dengan tekanan 32,05 bar dengan flow 142,22 m3/h. Sea water masuk PX dengan tekanan 2 bar dengan flow 233,29 m3/h dan keluar PX dengan tekanan 30,57 bar dengan flow 233,78 m3/h. Dari hasil perhitungan pressure exchanger pada PLTU Paiton mempunyai efisiensi sebesar 91,26 %.
Solar Cell Performance Test against Load Variations F Gatot Sumarno; Wahyono Wahyono; Baktiyar Mei Hermawan; Ahmad Hamim Su’udy; Nur Fatowil Aulia; Ikhwatinah Khoiroh; Mochammad Denny Surindra
Eksergi Vol 18, No 2 (2022): MAY 2022
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.172 KB) | DOI: 10.32497/eksergi.v18i2.3570

Abstract

Solar cell is a converter of light energy into electrical energy. This study aims to examine the characteristics of the solar cell to load variations. The research was conducted at the Semarang State Polytechnic Energy Conversion Lab. The solar cell used in the research of the monocrystalline solar cell type KTENG CP-520S. The research method is carried out by measuring the value of solar intensity, voltage and electric current from the solar cell, then calculating the value of the power and efficiency of the solar cell. The greater the intensity of sunlight, the better the characteristics of the solar cell with a note that the solar cell surface temperature must be stable at 250C. The results showed that the highest input power of the solar cell was 5293.69 watts at a lamp load of 115 watts at 833.6 W/m2 of radiation during sunny weather. The highest value of the output power of the solar cell is 191.52 watts when the lamp is loaded with 190 watts of radiation at 739.4 W/m2 during sunny weather. While the highest value of the load output power is 212.43 watts when the lamp is loaded with 200 watts of radiation at 724.4 W/m2 when the weather is sunny. The highest efficiency of the solar cell is 4.13% when the lamp is loaded with 200 watts of radiation at 724.4 W/m2 when the weather is sunny. And the highest value of Solar Power Plant efficiency is 4.61% at a 200 watt lamp loading at 724.4 W/m2 radiation when the weather is sunny.
Co-Authors Ahmad Hamim Su’udy BAKTIYAR MEI HERMAWAN F Gatot Sumarno Ikhwatinah Khoiroh Nur Fatowil Aulia Wahyono Wahyono