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Laurasti Aswindah Sari
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Energy Mechanical Engineering

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Pengaruh Gas C02 dan Refrigeran Dalam Udara Terhadap Efisiensi PLTS (Pembangkit Listrik Tenaga Surya) Muh. Yusuf Yunus; Laurasti Aswindah Sari
Jurnal Teknik Mesin Sinergi Vol 17, No 2 (2019): Oktober 2019
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.595 KB) | DOI: 10.31963/sinergi.v17i2.2084

Abstract

Application of sunlight energy every time is increasing along with the knowledge that continues to develop over time. One of the sources of solar energy is the Solar Power Plant (PLTS) which uses solar energy for electrical energy. The purposes of this research are to study the effect of CO2 gas for increasing the energy of PLTS and to find the effect of refrigerant gas on the efficiency of PLTS. Data is collected in an integrated electrical laboratory, the data are the voltage, current and intensity of solar radiation. Then the input power, output power and efficiency are calculated. The results of this study are the effect of CO2 gas on the efficiency of PLTS was not affect the efficiency of PLTS, namely the light intensity of 100 W / m2 to 380 W / m2 with a gas contribution of 5% and 10%, can be seen that if output power increase, the efficiency of PLTS is also increase. When using CO2 gas, the efficiency of PLTS almost the same as normal conditions (without gas).  The effect of the refrigerant gas mixture was not enfluence the efficiency of PLTS. When using refrigerant gas of 5% and 10% both R22 and R134 the efficiency of PLTS was the same with CO2 gas which its efficiency almost the same as normal conditions (without gas). Data with the intensity of solar radiation 100 W/m2 in normal conditions (without gas) the maximum efficiency that can be obtained is 9.085917% with an output power of 1.061917 watts, when R134 and R22 gas were added at PLTS, it was obtained  maximum efficiency at R134 (13,624637% )
STUDI PENGGUNAAN RELAI DIFERENSIAL SEBAGAI SISTEM PROTEKSI PADA PEMBANGKIT LISTRIK TENAGA UAP (PLTU) BARRU Muhammad Yusuf Yunus; Remigius Tandioga; Laurasti Aswindah Sari; Adhe Puspita
Jurnal Teknik Mesin Sinergi Vol 14, No 1 (2016): April 2016
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (828.616 KB) | DOI: 10.31963/sinergi.v14i1.1154

Abstract

Abstrak: Penelitian ini bertujuan untukmendapatkan gambaran tentang sistem kerja relai diferensial pada Pembangkit Listrik Tenaga Uap (PLTU) Barru serta untuk mendapatkan gambaran settingan slope yang tepat untuk relai diferensial pada sistem Pembangkit Listrik Tenaga Uap (PLTU) Barru. Karena relai diferensial merupakan proteksi utama pada transformator maka dari itu penulis melakukan studi penggunaan relai diferensial sebagai sistem proteksi transformator agar settingan relai tersebut tetap dalam keadaan normal tanpa gangguan.Hasil penelitian ini menunjukkan sistem kerja relai diferensialpada Pembangkit Listrik Tenaga Uap (PLTU) Barru yaitu berdasarkan pada besaran arus gangguan di luar zona. Apabila berdasarkan pada besaran nominal maka arus besar yang melewati sekunder transformator akan merusak peralatan serta setting slope yang tepat untuk relai diferensial agar dalam keadaan normal pada sistem proteksi Pembangkit Listrik Tenaga Uap (PLTU) Barru sesuai pada besaran arus gangguan di luar zona yaitu sebesar k = 0,533 sampai k = 2.Kata kunci: Relai diferensial, transformator, setting.
Co-Authors Adhe Puspita Muh. Yusuf Yunus Muhammad Yusuf Yunus Remigius Tandioga