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All Journal International Journal of Science and Engineering (IJSE) Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan
Tjukup Marnoto
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Journal : Eksergi: Chemical Engineering Journal

 1 
EVALUASI KONSTANTA PERSAMAAN KARAKTER PHOTOVOLTAIC TYPE MULTI KRISTAL DENGAN METODE HOOKE-JEEYES Tjukup Marnoto
Eksergi Vol 10, No 1 (2010): Versi Cetak
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v10i1.7618

Abstract

Persamaan karakter arus dan voltase (I-V) dari photovoltaik, mengandung beberapa konstanta, Persamaan ini dapat berlaku umum untuk meramalkan karakter (l-V) photovoltaic, apabila nilai-nilai konstanta diketahui. Penentuan nilai-nilai konstanta dilakukan berdasarkan dari data-data elsperimen yang dilakukan dengan variasi variabel yang berpengaruh. Nilai konstanta yang sesuai didapatkan dengan membandingkan data-hasil perhitungan'dengan data eksperimen menggunakan kaedah jumlah kuadrat kesalahan (SSE) minimum, proses ini dikenal sebagai optimasi (minimasi) persamaan nonlinier multi variabel. Pada tulisan ini akan dipaparkan optimasi regresi nonlinier multi variabel, dengan metoda pencarian langsung tanpa kendala (Hooke-Jebves method) dan algoritma maupun diagram alir program metode Hooke-Jeeves. Pemrogramankomputer dilakukan dengan bantuan bahasa program Scilab. Hasil optimasi diperoleh konstanta persamaan k1: 0.0065, k2= 0.006, k3=2858173 dan k4=12960. Persamaan model maternatik ini dengan konstanta tersebut dapat mewakili karakterist k photovoltaic type multikristal.
Koefisien Perpindahan Massa pada Ekstraksi Tanin dari Putrimalu (Mimosa Pudika) Tjukup Marnoto; Gogot Haryono
Eksergi Vol 9, No 1 (2009): Versi Cetak
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v9i1.7581

Abstract

Koefisien Perpindahan Massa pada Ekstraksi Tanin dari Putrimalu (Mimosa Pudika)
GRID CONNECTED SOLAR HYDROGEN ENERGY SYSTEM Tjukup Marnoto
Eksergi Vol 10, No 1 (2010): Versi Cetak
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v10i1.7609

Abstract

Solar-Hydr-ogen energy system has been regarded æ ttre future energy system that is clean, environmental-friendly, availability of renewable energy resources and easy to transfer or deliver to the end user. The grid connected solar hydrogen energy system (GCSHES) have the capability of overcoming the problems that óccur on the grid connected power system (GCPS) when there is a black out of grid electricity. Moreover, stand alone power system (SAPS) requires batteries and larger hydrogen tank capacity is required for higher energy genèration. An experimental GCSHES has been setup and tested. The GCSHES consists of subsystems photovoltaic (PV) array with 40 PV module type multicrystalin with its capacity of 5000 Wp, inverter capacity of 6000 W, electrolyzer capacity of 19 scf/h, hydrogen tank capacity of 1500 liter and fuelcell of 500 W. The characteristics equation and maximuln power output of PV was presented The monthly efficiency and performance of PV array is 12.7% and 26% , while the efficiency and performance of inverter is 95.1% and 98%, respectively. The efficiency of electrolyzer subsystem and fuel cell is 51% and 25%, respectively. The techno economical analysis indictated that the pay back period of this system is 18 years.
Co-Authors Chintya Rizki Hapsari Endang Sulistyowati Eniya Listiani Dewi Gogot Haryono Harso Pawignyo I Gusti S Budiaman M. Syahri Mahreni Mahreni Mahreni Mahreni Purwo Subagyo Risqi Angga Yudha Prakosa