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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta
Ova Kurniawan
Universitas Indonesia
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Partial Discharge of Polyurethane/ Organoclay Composite Coated on Aluminum Conductor Overhead Lines Bambang Soegijono; Ova Kurniawan; Hamdan Akbar Notonegoro; Arief Syarifuddin Fitrianto
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 2, October 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v1i1.9233

Abstract

Aluminum conductor have been used worldwide as the primary conductive materials for high voltage electrical transmission lines. The partial discharge behavior of the aluminum conductor have been obeserved during operation due to the transmission line's performance to serve electricity. The partial discharge of aluminum alloy coated by polyurethane/organoclay (PClay) composite material was studied. PClay composites were prepared by adding organoclay with different content in polyurethane as a matrix then coated on an aluminum conductor sample. A partial discharge test was conducted to obtain the behavior of partial discharge versus voltage. It was found that an escalation of organoclay content in the polyurethane reduce partial discharge appears.
The H2S Corrosion Effect On The Stationary Turbine Blade Thomas Agus Bayu Prasetyo; Hamdan akbar Notonegoro; Ova Kurniawan; Sunardi Sunardi
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.11213

Abstract

The Geothermal fluids were disturbed by volcanic gas sulfide deposit reactions which form by reaction of metal(s) with H2S. this sulfate acid is one of the most corrosive compounds in the steam which lead the pitting, stress corrosion cracking and other corrosion mechanisms. An optical microscope, XRF dan X-ray diffraction is used to observe the sediment samples that came from stationary blades. The results show that it mainly consists of 89.7%wt iron sulfide (FeS) and 10.3%wt arsenic trisulfide (As2S3). This phase is toxic by inhalation and ingestion. Downstream steam pipeline treatment is required to reduce sulfide carried away into steam turbines such as scrubbing or washing steam. For this reason, special handling is needed for the toxic waste resulting from washing.
Co-Authors Arief Syarifuddin Fitrianto Bambang Soegijono Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Thomas Agus Bayu Prasetyo