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All Journal Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Jurnal Polimesin Almikanika
Yogi Sirodz Gaos, Yogi Sirodz
Mahasiswa Program Ddoktoral, Program Studi Ilmu Keteknikan Pertanian Sekolah Pascasarjana IPB
Automotive Engineering Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Eksergi Air Heater Pada PLTU Batu Bara 65 MW Bukit Asam Thullah, Asep Hidayat; Gaos, Yogi Sirodz; Wiradinata, Irvan
ALMIKANIKA Vol 4 No 3 (2022): Juli
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/almikanika.v4i3.7132

Abstract

ABSTRAK Analisis Eksergi pada pembangkit listrik tenaga uap perlu dilakukan untuk menganalisis Eksergi serta memberikan informasi untuk meningkatkan nilai efisien pada Air Heater. Penelitian dilakukan dilab Enegi Program Studi Teknik Mesin Universitas Ibn Khaldun Bogor. Alat yang digunakan yaitu : preassure gauge, preassure transmiter, pompa, Gas analyzer, Solenoid valve, Expantion joint, Expantion joint, Computer personal. Dan bahan : Tube Sheet, Tube, Deeflacting, Baffle, Hopper. Analisa Eksergi Air Heater yaitu menghitung nilai Hot Steam dan Cold Steam, dilanjut dengan menentukan nilai Availability Exergy, Availability Work dan Eksergi loss. untuk mengetahhui nilai Eksergi loss yaitu dengan menjumlahkan terlebih dahulu dari nilai yang sudah dihitung yaitu,  nilai Availability Exergy dan Availability Work. Setelah mengetahui nilai dari Availability Exergy, Availability Work dan Eksergi loss maka dapat menentukan nilai efisiensi. Nilai keluaran dan masukan pada Air Heater Hot Stream sebesar 662,86 kJ/kg, Cold Stream sebesar 568,48 kJ/kg, Availability Exergy sebesar 101582,96 KW, Availability Work  sebesar 44345,33 KW, vailability Work  sebesar 47927,38 KW, Eksergi loss sebesar  KW. Dan efisiensi yang didapat yaitu sebesar 79%. Kata kunci :  Air Heater; analisis eksergi; efisiensi ABSTRACT Exergy analysis in steam power plants needs to be done to analyze the exergy and provide information to increase the efficient value of the air heater. The research was conducted in the Enegi Lab in the Mechanical Engineering Study Program at the University of Ibn Khaldun Bogor. The tools used are : preassure gauge, preassure transmiter, pompa, Gas analyzer, Solenoid valve, Expantion joint, Expantion joint sealing, Computer personal. Dan bahan : Tube Sheet, Tube, Deeflacting, Baffle, Hopper. Air Heater Exergy Analysis is calculating the value of Hot Steam and Cold Steam, followed by determining the value of Availability Exergy, Availability Work and Exergy loss. To find out the value of exergy loss, that is by adding up in advance the calculated value, namely the availability of Exergy and Availability Work. After knowing the value of Availability Exergy, Availability Work and Exergy loss, it can determine the value of efficiency. Output and input values at Hot Stream Air Heater of 662.86 kJ / kg, Cold Stream of 568.48 kJ / kg, Availability Exergy of 101582,96 KW, Availability Work  of 44345,33 KW, vailability Work  of 47927,38 KW, Exergy loss of 9310.25 KW. And the efficiency obtained is 79%. Keywords : Air Heater; exergy analysis; efficiency.
Analisa Kinerja Dan Kekuatan Kostruksi Shell Pada Surface Condenser Araf, Al; Gaos, Yogi Sirodz
ALMIKANIKA Vol 4 No 1 (2022): Januari
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/almikanika.v4i1.7149

Abstract

ABSTRAK Penelitian dilakukan untuk mengetahui kinerja shell dari surface condenser dan mengetahui kekuatan konstruksi shell. Dalam tahapan penelitian ini, penulis menghitung perpindahan panas, perpindahan panas total dan overall heat transfer (NTU). Berikutnya menghitung kekutan konstruksi shell dengan tahapan melakukan perhitungan ketebalan dinding shell berdasarkan tekanan internal, menghitung MAWP pada shell dan head, menghitung tekanan tes hidrostatik pada shell. Perhitungan tekanan external shell dan menghitung kekuatan sambungan las, pada perhitungan kekuatan konstruksi menggunakan standar ASME yang terkait. Dari hasil perhitungan, kinerja shell pada surface condenser dan kekuatan kostruksi shell pada surface condenser didapatkan hasil kinerja surface condeser didapatkan LMTD (log mean temperature diference) 14,67°C. Overall Heat Transfer 8,3478w/m² C dan over design 0,10%. Dari hasil perhitungan ketebalan shell dan head pada surface condenser didapatkan hasil ketebalan shell 4,610 mm dan tebal Head 4,59 mm, perhitungan MAWP shell 418,59 psi untuk perhitungan tekanan tes hidrostatik untuk mengetahui tekanan hidrostatik sebesar 223,17 psi, dan hasil perhitungan sambungan las menggunakan elektroda ER 70S-6 diperoleh tegangan pengelasan 2.557,94 psi. Kata kunci : kinerja shell; kekuatan konstruksi shell; Surface Condenser. ABSTRACT The research was conducted to determine the shell performance of the surface condenser and to determine the strength of the shell construction. In this research stage, the writer calculates heat transfer, total heat transfer and overall heat transfer (NTU), then calculates the shell construction strength by calculating the shell wall thickness based on internal pressure, calculating MAWP on the shell and head, calculating the hydrostatic test pressure on the shell, calculating the external shell pressure and calculating the strength of the welded joint, in calculating the construction strength using the relevant ASME standards. ,67°C, Overall Heat Transfer 8.3478w/m² C and 0.10% over design. From the calculation of the thickness of the shell and head on the surface condenser, the shell thickness is 4.610 mm and the head thickness is 4.59 mm, the calculation of MAWP shell 418,59 psi, for hydrostatic test pressure calculation to find out hydrostatic pressure of 223.17 psi, and the results of the calculation of the weld connection using the ER 70S-6 electrode obtained a welding voltage of 2.557.94 psi. Keywords : surface Condenser; shell performance; shell construction strength.  
Co-Authors Ahmad, Haris Aji, Muhammad Idham Bayu Akbari, Ricki Fan Anggara, Egi Robby Annisa Annisa Anton Royanto Ahmad Araf, Al Bahry, Syamsul Damis Widiawati, Candra Edi Marzuki Hablinur Alkindi Haraq, Muhammad Abdullah Iis Rodiah Irvan Wiradinata Jamaludin, Acep Maulana, Yahya Muhamad Yulianto Mulya Juarsa Novianto, Irsan Nuraini, Aisyah Iadha Nurtanto, Bagus Dwi Putra, Hanang Agna Pradana Sobar, Ade Sutoyo, Edi Thullah, Asep Hidayat Tika Hafzara Siregar Wahidin Wahidin Wicaksono, Muhammad Faisal Widiawati, Candra Damis Yanto, Dwi