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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) TEKNIK Rekayasa Mesin Sinergi R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Conference on Innovation and Application of Science and Technology (CIASTECH) JOURNAL OF SCIENCE AND APPLIED ENGINEERING JAST : Jurnal Aplikasi Sains dan Teknologi Jurnal Masyarakat Merdeka (JMM) Jurnal Teknik Mesin Indonesia Jurnal Aplikasi Dan Inovasi Ipteks SOLIDITAS Jurnal Energi dan Teknologi Manufaktur Scientific Journal of Mechanical Engineering Kinematika JURNAL FLYWHEEL Jurnal Mesin Nusantara Journal mechanical and manufacture technology (JMMT) ARMATUR : Artikel Teknik Mesin dan Manufaktur Aceh International Journal of Science and Technology Prosidia Widya Saintek PROTON : Jurnal Ilmu-Ilmu Teknik Mesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Purbo Suwandono
Program Studi S1 Teknik Mesin, Fakultas Teknik, Universitas Widyagama Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Journal : JOURNAL OF SCIENCE AND APPLIED ENGINEERING

 1 
Optimization of Condenser Backwash Method to Maintain Condenser Performance During the Backwash Process in PLTGU Grati Adin Nurrohman; Purbo Suwandono; M. Agus Sahbana; Gatot Soebiyakto
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 5, No 1 (2022): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v5i1.3579

Abstract

The condenser is a device used to change the water vapor phase that has been used to rotate the turbine blade into a liquid phase by condensing it. When the condenser tube is dirty, it can disrupt the steam condensation process which affects the efficiency of the condenser. To overcome this problem a condenser backwash is carried out.  Condenser backwash has a good influence on unit efficiency but backwash activities also reduce production by decreasing vacuum condensers and steam turbine loads. When the vacuum condenser backwash process decreases + - 24 mmHg and the steam turbine load decreases + - 8 MW.The condenser backwash process is carried out from the control room with the observation of parameters from the local area or equipment. Backwash condensers are done one by one as needed. The condenser type in PLTGU Grati Block I is a type of crossflow with two sides, namely, side A and side B. Each side of the condenser has a different sequence backwash condition. This study will be carried out a backwash method that is different from the sequence of automatic sequences.In the normal condenser backwash activity of data table 3 we can know there is a decrease in steam turbine load ± 8MW and a decrease in vacuum ± 24 mmHg. This is because at a certain period the condenser performance is reduced because at the time of switching valve one side of the condenser is not irrigated by seawater so that the heat transfer in the condenser is reduced which has an impact on a load of steam turbine and vacuum condenser. After the research was obtained that the greater the opening of the valve inlet when the condenser backwash then the decrease in vacuum and steam turbine load decreased even no decrease in load.The backwash method that can be done to keep the vacuum condenser and steam turbine load stable is by maneuvering the valve inlet, outlet, and condenser backwash valve. The results of the analysis obtained were a more stable decrease in steam turbine production in 0 MW and a decrease in the vacuum of 14 mmHg.
Add-On Energy Harvesting of Diesel Exhaust Muffler Using Thermoelectric Generator Aditya Wahyu Winadi Atmajaya; Purbo Suwandono
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 6, No 1 (2023): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v6i1.4663

Abstract

Trends Light fossil fuel vehicles are now turning to electricity. The electric vehicle transition begins with a hybrid car. The Hybrid vehicle uses an internal combustion engine as a generator. Controller systems, driving safety and entertain light vehicles are growing so that they consume a lot of electricity, Safe devices and driving lifestyle support. An additional battery charging system for a hybrid car now is being developed by the automotive manufacturer at least the system can increase the fulfilment of electricity consumption needs.The charging system can utilize waste energy vehicle itself or even from outside the vehicle system. In this research, the author wants to explore the thermal energy harvesting system in the remaining exhaust gases. The concept of this research is to develop a Thermoelectric Generator (TEG) as a power producer. The heat source uses a 140kW diesel engine with a heat potential of 523K at stationary conditions, and an exhaust velocity of 1407.05 m / s. This study demonstrates the potential prototype TEG then compared Ansys simulation and manual calculations as the first step for further research. The results obtained, the Exhaust TEG can produce a voltage of 2.1 Volt at 30 seconds of data collection. The cooling system on the TEG exhaust from the HVAC cooler with a temperature of 289K and a Velocity of 0.8 can produce a significant temperature difference.Keywords: Diesel Engine, Thermoelectric, Exhaust TEG system, Electricity.
Effect of Internal Reflectors on Daily Performance of Double Slope Solar Stills with Porous Fin Absorber Plate Nova Risdiyanto Ismail; Purbo Suwandono; Dadang Hermawan; Akhmad Farid; Frida Dwi Anggraeni
JOURNAL OF SCIENCE AND APPLIED ENGINEERING Vol 7, No 1 (2024): JSAE
Publisher : Widyagama University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/jsae.v7i1.5981

Abstract

The potential of energy and sea water in Indonesia is relatively high, but it has not been utilized massively to reduce the shortage of fresh water on the islands. Utilization of this potential can use solar stills. Solar still is a relatively cheap technology, easy to obtain materials, environmentally friendly and easy to construct, but this technology has shortcomings in its low productivity. Efforts to increase productivity have been made by many researchers, but there has not been a study of internal reflector integration in a double slope solar still using a porous absorbent plate tested for 23 hours. This study aims to examine the effect of adding an internal reflector on the performance of a double slope solar still. The performance of the double slope solar still is identified by evaluating freshwater productivity and efficiency. This research was conducted experimentally comparing with and without internal reflector. The addition of internal reflectors varies in placement, as for the placement on the north and south sides (RUS), the south side (RS), and the north side (RU). Data collection starts at 07.00 p.m. until 06.00 a.m the next day and is carried out for 5 days. Research comparing the performance of RUS, RS, RU compared to TR and concluded that there is an increase in temperature of fins, seawater and cover glass when using the addition of internal reflector. The increase in temperature has an effect on daily productivity for RUS, RS and RU between 12.88-16.13%, 8.71-12.56%, and 1.70-2.88%, respectively. In addition, the addition of the internal reflector has a positive effect on increasing the daily efficiency for RUS, RS and RU between 12.69-15.93%, 8.60-12.46% and 1.65-2.82%, respectively.
Co-Authors AA Sudharmawan, AA Adin Nurrohman Aditya Wahyu Winadi Atmajaya Agung Suprapto, Agung Agus Nofiyanto Ahmad Rusli Wahyu Setiawan Akhmad Farid Akhmad Farid Akhmad Farid Al Barr, Muhammad Haafizh Alvin Dio Nugroho Andy Hardianto Andy Hardianto Anggunio, Cornelius Arie Restu Wardhani Arief Rizki Fadhillah Dadang Hermawan Dadang Hermawan Dicky Dikananda Nafis Dicky Dikananda Nafis Diky Siswanto Dlofir, Aan Taufik Dwi Anggraeni, Frida Fachrudin Fachrudin Fachrudin Hunaini Fanani, Akhmad Rizal Ferdinando, Rio Fressy Nugroho Frida Dwi Anggraeni Frida Dwi Anggraeni Gatot Soebiyakto Gatot Soebiyakto Gatot Soebiyakto Gatot Subiyakto Gatot Subiyakto Gatot Subiyakto Gatot Subiyakto Gatot Subiyakto Hakim, Muhammad Izzuddin Abdul Hangga Wicaksono Heni Pujiastuti Hunaini, Fachrudin Hutri Wicaksono, Leo Imam Hambali Ismail*, Nova Risdiyanto Leo Hutri Wicaksono M. Agus Sahbana M. Ghazali Arrahim Mardianto, Dias Moch. Zainul Achyak Mochammad Nurcholis Majid Muhammad Agus Sahbana Muhammad Arief Hidayat Muhammad Ilman Nur Sasongko Nafisah, Viona Ngudi Tjahjono Nova R. Ismail Nova Risdiyanto Ismail Novayako, Riza Dandy Nurida Finahari Nurkholis Hamidi Prakoso, Yogi Iman Prasetyo, Rino Ayogi Adi Prihandarini, Ririen Priyandoko Gigih Putra, Gusty Nanda Kharisma R. Ismail, Nova Rama Agus Santoso Ramadhani, Auzhar Rafli Ririen Prihandarini Rizki Hidayat Sigit Tri Wicaksono Silviana Silviana Silviana Silviana Sitanggang, Rickie Natanael Solichi, Azis Sumartono Ali Putra Suriansyah, Suriansyah Ubaidillah Ubaidillah Wahai, Rizky Wahyudi, M. Ilham Setyo Wicaksono, Hangga Wicaksono, Leo Hutri Widya Wijayanti Wijaya, Rendra Adi