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Performance and Fuel Consumption of Diesel Engine Fueled by Diesel Fuel and Waste Plastic Oil Blends: An Experimental Investigation Sunaryo Sunaryo; Priyo Adi Sesotyo; Eqwar Saputra; Agus Pulung Sasmito
Automotive Experiences Vol 4 No 1 (2021)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

This study analyzes the performance of the diesel engine in terms of power, torque, specific fuel consumption, and thermal efficiency using diesel and pyrolysis oil. The waste plastic oil (WPO) used in this research was produced through a pyrolysis process using raw materials from Low-density Polyethylene (LDPE) mixed with diesel fuel in volume ratios WPO10, WPO20, WPO30, WPO40, and WPO50. In addition, a performance test was carried out on the single-cylinder diesel engine test bench. The results showed that performing the diesel engine with the addition of WPO increased the average power and torque by 5% and 3%, thereby producing a higher heating value. Furthermore, the concentration of WPO also reduces the level of specific fuel consumption to be more efficient, with a decrease in thermal efficiency. In conclusion, plastic waste pyrolysis oil is a promising alternative fuel applicable to a diesel engine.

ANALYSIS OF POTENTIAL ENERGY AND ENVIRONMENTAL IMPACT FROM COAL GASIFICATION THROUGH SIMULATION OF PLASMA GASIFICATION PROCESS OF INDONESIAN LOW-RANK COAL Priyo Adi Sesotyo; Muhammad Nur; Oki Muraza
Indonesian Mining Journal Vol 24, No 1 (2021): INDONESIAN MINING JOURNAL, Vol. 24 No. 1, April 2021
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol24.No1.2021.1192

Indonesia's coal reserve is abundant with its lower price and widely distributed than oil and natural gas. However, the coal emits high carbon dioxide gas (CO2) and sulfur compounds (H2S, SOx) to the environment during utilization. Plasma gasification can overcome those lacks using the external electric energy through a plasma torch. The chemical properties of coal have impacts on the energy content and environmental benchmarking. Using steam as a gasifying agent should be adequate to produce H2 and CO syngas. A research has been carried out to analyze and understand the benefit of using different gasifying agent for maximizing the H2 production and minimizing the environmental impact. Pure Steam (PS) gasifying agent to coal ratio of 0.4 has shown 43.76% H2 composition in syngas and cold gasification efficiency (CGE) with 37.71%. The PS to coal ratio of 0.2 has a significant carbon conversion efficiency of 4.75% and the PS to coal ratio of 0.6 has a gross energy potential of 86.5 kW. Using such the PS is significantly better than the mixture of steam oxygen (SO) as the gasifying agent since it needs to have a greater SO flow rate to have the SO to coal ratio of 1.00.

ANALYSIS OF POTENTIAL ENERGY AND ENVIRONMENTAL IMPACT FROM COAL GASIFICATION THROUGH SIMULATION OF PLASMA GASIFICATION PROCESS OF INDONESIAN LOW-RANK COAL Priyo Adi Sesotyo; Muhammad Nur; Oki Muraza
Indonesian Mining Journal Vol 24 No 1 (2021): INDONESIAN MINING JOURNAL, Vol. 24 No. 1, April 2021
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol24.No1.2021.1192

Indonesia's coal reserve is abundant with its lower price and widely distributed than oil and natural gas. However, the coal emits high carbon dioxide gas (CO2) and sulfur compounds (H2S, SOx) to the environment during utilization. Plasma gasification can overcome those lacks using the external electric energy through a plasma torch. The chemical properties of coal have impacts on the energy content and environmental benchmarking. Using steam as a gasifying agent should be adequate to produce H2 and CO syngas. A research has been carried out to analyze and understand the benefit of using different gasifying agent for maximizing the H2 production and minimizing the environmental impact. Pure Steam (PS) gasifying agent to coal ratio of 0.4 has shown 43.76% H2 composition in syngas and cold gasification efficiency (CGE) with 37.71%. The PS to coal ratio of 0.2 has a significant carbon conversion efficiency of 4.75% and the PS to coal ratio of 0.6 has a gross energy potential of 86.5 kW. Using such the PS is significantly better than the mixture of steam oxygen (SO) as the gasifying agent since it needs to have a greater SO flow rate to have the SO to coal ratio of 1.00.

Pengaplikasian Praktek Layouting Kabel Multicore Fiber Optik Pada SMK NU Hasyim Asyari di Tarub Tegal Ardina, Elfira Nureza; Erlinasari, Ir.; Sesotyo, Priyo Adi
Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Vol 7, No 1 (2024): Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstormin
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/japhb.v7i1.6254

Perkembangan media transmisi sangat pengaruh di dunia telekomunikasi. Beberapa jenis transmisi yang digunakan untuk mengirimkan sinyal telekomunikasi yaitu transmisi fisik dan non fisik, untuk transmisi non fisik memiliki banyak kekurangan karena rentan terhadap dengan interferensi saat pengiriman sinyal, selain non fisik ada juga media transmisi fisik seperti kabel tembaga memiliki kelemahan tidak dapat mengirimkan sinyal dalam bentuk sinyal cahaya, untuk kapasitas bandwithnya sangat kecil dan saat pengiriman sinyal telekomunikasi kabel tembaga rentan terpengaruh oleh gangguan frekuensi listrik dan radio. Oleh karena itu pada sistem pengiriman sinyal memiliki solusi dimana transmisi fisik berupa kabel fiber optik. Fiber optik telah digunakan dibeberapa dunia perindustrian, tetapi untuk sistem pengaplikasian kabel fiber optik di dunia pendidikan masih sangat sedikit untuk penjelasannya terutama pada sekolah tingkat SMK yang mempelajari ilmu dibidang telekomunikasi. Pada sebuah sekolah di daerah Tegal seperti SMK NU Hasyim Asyari berharap siswa dan siswi tersebut dapat mengaplikasikan perkembangan sistem telekomunikasi terutama pada transmisi fiber optik secara teori maupun praktek di kelas industri. Oleh karena itu telah dilakukan pengabdian kepada masyarakat untuk pengaplikasianlayouting kabel multicore fiber optik pada SMK NU Hasyim Asyari. Pengabdian kepada masyarakat memiliki tujuan agar siswa dan siswi SMK NU Hasyim Asyari pengaplikasian secara langsung cara layouting kabel multicore pada fiber optik yang selama ini dilakukan oleh beberapa provider. Pengaplikasianlayouting kabel multicore fiber optik ini berupaya untuk memberikan pengetahuan kepada siswa dan siswi SMK NU Hasyim Asyari tentang perkembangan media transmisi fisik dunia industri telekomunikasi dan pengaplikasian perangkat fiber optik secara langsung. Selain itu dapat menambah ilmu pengetahuan tentang fiber optik terhadap para pengajar sekolah SMK NU Hasyim Asyari di Tarub Tegal.

Studying the Absorption Refrigeration System powered by Thermal Waste and Electricity Conversion from Photovoltaic Priyo Adi Sesotyo; Sunaryo Sunaryo; Zainal Arifin; Puji Basuki
Clean Energy and Smart Technology Vol. 1 No. 1 (2022): October
Publisher : Nacreva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58641/cest.v1i1.3

Currently, buildings are responsible for 32% of the world’s energy consumption, with the most massive energy-consuming device in facilities being the refrigeration system. Photovoltaic is an alternative source of energy without causing environmental damage. Solar Refrigeration is an attractive solution because when there is much solar radiation, peak thermal energy is generated, and a lot of cooling capacity is needed. In this research, the amount of PV modules used as the LiBr-H2O Absorption Refrigeration System’s primary energy source is investigated. PV modules have a dual function, namely as a producer of electric power and producing thermal waste, both of which can be used as energy sources to drive this refrigeration system. In this thermal waste, two thermal sources, namely thermal convection and thermal radiation, accumulate to activate heat exchange at the LiBr-H2O absorption refrigeration system’s generator side. For electrical power from the PV module, it is used to run the air heater to increase the temperature until it reaches the optimum point for hot water supply between 65 to 70 oC. The results are that at least 100 modules of 100Wp Monocrystalline PV Module are needed to drive the LiBr-H2O absorption refrigeration system. Still, it is limited to 15.00, after which the energy source is switched back to electricity from PLN because, after 15.00, many PV modules are required and takes up a large enough space.

Evaluating the Damage Cost of Vehicle to Grid Integration in Indonesia Power Grid for Sustainable Energy System Sesotyo, Priyo Adi
International Journal of Engineering Continuity Vol. 4 No. 1 (2025): ijec
Publisher : Sultan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58291/ijec.v4i1.368

The cost incurred in the EV Charging is currently only from the energy consumed consideration. While there is extensive research on the impact of EV charging on grid infrastructure and operation, few studies quantify these effects in terms of explicit 'damage costs'. However, besides energy problems, the analysis of the environmental impact of EVs has not been quantified monetarily. This paper aimed to investigate the damage cost (DC) of EVs in comparison with Battery Electric Vehicles (BEVs) and Plug-in Hybrid Electric Vehicles (PHEVs) based on Indonesia Java Bali's grid conditions. Using the existing data in Indonesia, the characterisation parameter were determined using cradle-to-gate life cycle analysis (LCA) and ReCiPe 2016 then converting the endpoint indicators impacts to DC using a monetary weight factor (MWF) of those two EVs. Cradle to gate LCA is a method for evaluating the environmental impact of battery from the extraction of raw material to the factory gate and ReCiPe 2016 is a widely used of LCA method, which converts emission and resources extraction into certain indicators. Results show that DC for a 20 kWh BEV = 0.12 ± 0.01 USD/kWh compared to an 8 kWh PHEV = 0.08 ± 0.005 USD/kWh. Therefore, the DC of an extra 0.02 USD/kWh for BEVs and 0.015 USD/kWh for PHEVs should be considered in formulating the EV charging tariff.

Evaluating of DC-DC Buck-Boost Converter implementation for Integrated Solar Photovoltaic and Thermoelectric Cooler System Sesotyo, Priyo Adi; Muhamad Idris, La Ode; Dwi Cahyono, Taufik; Sadewa, Ery
International Journal of Engineering Continuity Vol. 4 No. 1 (2025): ijec
Publisher : Sultan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58291/ijec.v4i1.372

The growing demand for compact, efficient, and eco friendly cooling solutions has driven research into integrating thermoelectric coolers (TECs) with solar photovoltaic (PV) systems, where solar irradiance variability impacts cooling efficacy and energy efficiency. This challenge is addressed using DC-DC Buck-Boost converters whose performance is heavily influenced by control strategies such as Proportional Integral Derivative (PID) controllers employing tuning approaches that balance performance and prioritize disturbance rejection. This study investigates the implementation and performance of a DC-DC buck-boost converter in a solar photovoltaic and thermoelectric cooling (PV-TEC) system. Simulation-based analysis compared tuning methods for their ability to maintain thermal stability, reduce electrical input fluctuations, and enhance the TEC's Coefficient of Performance (COP). Results show that the PID controller significantly improves responsiveness and energy efficiency in dynamic solar conditions, achieving a 23% reduction in power consumption and a 36% increase in COP, highlighting the importance of adaptive control strategies.

EKSTRAKSI CIRI CITRA BENTUK SEL DARAH MERAH MENGGUNAKAN METODE MORFOLOGI SULISTYO, ISYA ARYAN; SESOTYO, PRIYO ADI; CAHYONNO, TAUFIQ DWI
Smart Comp :Jurnalnya Orang Pintar Komputer Vol 14, No 4 (2025): Smart Comp: Jurnalnya Orang Pintar Komputer
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/smartcomp.v14i4.7372

Proses pengenalan objek dalam citra umumnya membutuhkan suatu ciri yang dapat membedakan antara objek satu dengan objek yang lainnya dan bentuk dari sel darah. Ciri yang dapat diekstraksi diantara lain ciri ukuran (luasan dan keliling) dan posisi (koordinat sentroid) dari suatu objek. Sentroid merupakan koordinat titik tengah dari suatu objek, luasan merupakan banyaknya piksel yang menyusun pada objek. Sedangkan keliling merupakan banyaknya piksel yang berada pada objek batas. Ketiga sel darah tersebut memiliki bentuk yang berbeda. Eritrosit memiliki bentuk pipih seperti cakram bikonkaf dengan diameter 7,5 µm memiliki ketebalan 2 µm dan tidak berinti, sedangkan untuk leukosit mempunyai satu inti sel dan berbentuk tidak tetap memiliki ukuran 8-15 µm. Keping darah memiliki ciri dan bentuk yang berbeda dari eritrosit dan leukosit, trombosit memiliki yang paling terkecil berukuran 2 µm memiliki bentuk tidak beraturan salah satunya berbentuk lonjong, trombosit terdiri dari kepingan-kepingan darah yang memiliki Nukleus. Dari hasil pengenalan tersebut maka akan diketahui sebuah ciri tersendiri diantaranya dalam tahapan pengenalan pola, operasi morfologi disini digunakan untuk pengenalan bentuk dari sebuah objek dan dapat diberi label berdasarkan bentuk dan ukuran.

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