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Nazaruddin Sinaga
Teknik Mesin, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering

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Efek Variasi Kandungan Air Terhadap Kerja Gas Engine Cooler Suatu PLTB Limbah Organik Pasar Induk PLTB Limbah Organik Pasar Induk Dede Hanafi Fajrin; Nazaruddin Sinaga
Politeknosains Vol 15 No 1 (2016): Jurnal Politeknosains Volume 15 Nomor 1 - Maret 2016
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Organic waste from wholesale market can be degraded to biogas by anaerobic digestion. In PLTB, biogas which has main composition of methane is used as fuel for gas engine to generate electricity. Before being used in the gas engine, biogas is purified and condensed to remove impurity gases. Biogas purification process used a high pressure water scrubber while for condensation used a gas engine cooler. The working of cooler is removing saturated water vapour before gas being burned into gas engine. The purpose of this research is analyzing the effect of water content to the working of cooler for removing water vapour in biogas. To analyze the working of cooler, mass flow of water for anaerobic digestion and water for scrubbing process is varied and simulated by the software AspenPlus V 8.6. In this simulation result, water influences to remove the impurity gases including water vapour. When the input of water is greater in feedstream or make up water, cooler removes water vapour is getting smaller because water vapour dissolved in the water is more.
Pengaruh Penggunaan Bahan Bakar LGV pada Mobil Penumpang 1200 cc dan 1500 cc Terhadap Kebutuhan Udara dan Bahan Bakar Amirur Rozak; Nazaruddin Sinaga
Politeknosains Vol 15 No 1 (2016): Jurnal Politeknosains Volume 15 Nomor 1 - Maret 2016
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Manufacture of semiconductor material ofzinc oxide (ZnO) doped with copper (Cu) aims to obtain a good p-type semiconductor material ZnO1-xCuxO. Materials zinc nitrate tetra hydrate and copper nitrate trihydratearean initial material which are combined through a process of mixing the powder in solution with varying content Cu of 0%, 2%, 4%, 6% and 8% mol. Next, the solution is dried, calcined and compacted into pellet form. The pellet is sintered with temperature 1300oC. Results of testing showed the characteristics of materials Zn1-xCuxO containing Cu and testing operating temperature at 450oC generates biggest value for the thermal conductivity of 1.85 W / mK. The amount of material doping affect the the thermal conductivity
Co-Authors Amirur Rozak Dede Hanafi Fajrin