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All Journal Jurnal Penelitian Saintek Jurnal Energi Dan Manufaktur Dinasti International Journal of Education Management and Social Science International Journal of Applied Sciences and Smart Technologies Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat
A. Prasetyadi
Universitas Sanata Darma
Humanities Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Other

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PETROLEUM CHARACTERISTICS ETER AND DIETIL ETER AS THE WORK ENERGY WATER ENERGY PUMP F.A. Rusdi Sambada; A. Prasetyadi
Jurnal Penelitian Saintek Vol 19, No 1: April 2014
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1247.355 KB) | DOI: 10.21831/jps.v19i1.2319

Abstract

Water pumps in areas without electricity are generally driven by fuel engine. The problem arises while the fuel is getting scarce and expensive. This research aims to create a model of thermal energy water pump and examine petroleum ether and diethyl ether characteristics as working fluid of thermal energy water pump. Parameter variations are done on type of fluid, mass of the working fluid and pumping head. Measurements are conducted on temperature of the working fluid, pumping discharge, time, working fluid pressure and pump pressure. A cycle time of petroleum ether is 158 minutes which is 6 times longer than diethyl ether (24.3 minutes).  The discharges of diethyl ether are 0.9, 0.7  and 1.3 liters/min in average, minimum and maximum respectively. They are greater than petroleum ether (0.3, 0.1 and 1.1 liters/min). Diethyl ether generated evaporator pressure greater than petroleum ether (0.7 vs. 0.55 bar). Amount of air in the pressured air tube and in the system affects the volume and discharge. There is optimal mass of working fluid for specific head and amount of air in the pressured air tube. There is also optimal head for specific amount of working fluid mass and air in the pressured air tube.  
Peningkatan unjuk kerja destilasi air energi surya jenis vertikal menggunakan pelacak matahari Doddy Purwadianto; A. Prasetyadi; Dian Artanto
Jurnal Energi Dan Manufaktur Vol 9 No 2 (2016): Oktober 2016
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (823.693 KB)

Abstract

Abstrak:Mencari air bersih merupakan salah satu pekerjaan utama masyarakat di daerah terpencil. Di beberapa daerah, sumberair yang ada sudah terkontaminasi garam atau zat lain yang dapat membahayakan kesehatan. Cara penjernihan air palingmurah dan sederhana adalah dengan destilasi air menggunakan energi surya. Permasalahan umum destilasi air energi suryasaat ini adalah masih rendahnya efisiensi yang dihasilkan. Masalah ini dapat diatasi dengan menggunakan sistem pelacakmatahari agar posisi alat destilasi dapat mengikuti arah gerakan matahari. Penelitian penggunaan sistem pelacak matahari padaalat destilasi air energi surya yang ada umumnya adalah untuk destilasi air energi surya jenis horisontal, pada penelitian inidigunakan destilasi air energi surya jenis vertikal. Penelitian ini bertujuan untuk meningkatkan efisiensi destilasi air energi suryajenis vertikal serta mengembangkan model sistem pelacak matahari yang ada yakni dengan menambahkan RTC(Real TimeClock). Penambahan RTC dapat mengatasi kelemahan sistem pelacak matahari yang ada yakni ketidak akuratan penentuanposisi matahari saat cuaca berawan. Parameter yang diukur adalah temperatur air, temperatur kaca penutup, temperatur udarasekitar (TA), kelembaban udara sekitar, kecepatan angin, jumlah massa air destilasi yang dihasilkan, energi surya yang datangdan lama waktu pencatatan data.Penelitian ini merupakan penelitian multi tahun dengan dana Dikti yang saat ini memasukitahun kedua dari rencana penelitian selama tiga tahun. Hasil tahun pertama menunjukkan, air destilasi yang diperoleh destilasidengan pelacak matahari 30% lebih banyak dibandingkan destilasi tanpa pelacak matahari. Hasil tersebut diperoleh pada lajumassa air yang akan didestilasi sebesar 0,7-1 kg/jam. Pada tahun kedua akan diupayakan peningkatan efisiensi yang lebih baikdengan penyempurnaan sistem pelacak matahari, sistem pendistribusian air, posisi alat destilasi dan penggunaan absorberyang mempunyai sifat kapilaritas yang lebih baik.Kata kunci: destilasi surya, vertikal, pelacak matahariAbstract:Looking for clean water is main activity in some remote areas because the water is contaminated by salt or other healthjeopardized substance. Solar distillation is the cheapest and simplest way to clean water. But the common solar still has lowefficiency due to the solar daily movement. Therefore solar tracker should be applied to such condition. Researches onapplication of the solar tracker usually were conducted on horizontal solar still. This research is focused on vertical solar still withsolar tracker. The aims of the research are to enhance the solar still efficiency with application of the solar tracker and toimprove solar tracker with RTC (Real Time Clock). Applying the RTC on solar tracker will increase its capability on predicting thesolar position during cloudy times. The measured parameters are water temperature, cover parameter, ambient temperature(TA), ambient humidity, wind speed, distillated water mass, solar energy and time. The research is multi-years research fundingby High Education Department. This year is the second of three planned year research. The result of the first year researchshows that the clean water produced by the vertical still with solar tracker is 30% more than vertical solar still without solartracker production. Such condition was done on 0.7 – 1 kg/jam water mass rate. In the second year, improvement of theefficiency will be attempted on improving of the solar tracker system, water distribution system, position of the solar still andbetter absorber with higher capillarity.Kata kunci: solar still, vertical, solar tracker
PANDANGAN SISWA TERHADAP DESAIN BERBANTUAN KOMPUTER DALAM PELATIHAN SOLIDWORKS DI SMK NUSANTARA KUDUS Andreas Prasetyadi; I Made Wicaksana; Budi Setyahandana; I Gusti Ketut Puja; Stefan Mardikus; Raden Benediktus Dwiseno Wihadi; Heryoga Winarbawa; Rines Rines
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2022): April 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/aa.v5i1.3892

Abstract

An activity of collaboration between Mechanical Engineering Department of Sanata Dharma University and SMK Nusantara Kudus was conducted. The percepetion of High School Students of SMK Nusantara Kudus about Computer Aided Design was measured during the Solidworks Training as the main activity. Pre- and Post-Questionnaires were delivered among the 20 students joining the activity. Nineteen of them returned the questionnaires of 10 positive statements with 3 conditions of answers i.e. agree, disagree, and undecided. The results show that the students mostly are interested in designing manually and computer based. It also mentions that they appreciate CAD skills as their important future work skill. The activity did not affect the interest of the students in term of designing but helped them to be more engaged to the CAD.
Characteristics of Wooden Furniture Drying Machine Petrus Kanisius Purwadi; A. Prasetyadi
International Journal of Applied Sciences and Smart Technologies Volume 04, Issue 01, June 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v4i1.4755

Abstract

This study aims to determine the characteristics of the electric energy drying machine used to dry wooden furniture. Furniture made of mahogany. The research was conducted experimentally in the wood furniture industry. The size of the wood drying room is 8 m x 6 m x 3 m. The dryer works with a vapor compression cycle using R134a freon and several fans placed in the drying chamber. The drying process uses a closed air system. The total volume of dried wooden furniture is 12.9 m3. The initial moisture content in the wood ranges from 18% to 23%. Wooden furniture is considered dry if the moisture content in the wood furniture is less than 12%. Research gives satisfactory results. The performance of the drying machine or COP is 10.85. The drying time for wooden furniture is about 72 hours.
Village Development through Potential Analysis of Kaliagung Village, Kapanewon Sentolo, Kulon Progo Regency, Special Region of Yogyakarta Rubiyatno, Rubiyatno; Maria Polina, Agnes; Kurniawati, Lucia; Prasetyadi, A.; Hermawan Astyanto, Achilleus; Wijanarka, Hirmawan; Vincentia Eka Mulatsih, Maria
Dinasti International Journal of Education Management And Social Science Vol. 6 No. 2 (2025): Dinasti International Journal of Education Management And Social Science (Decem
Publisher : Dinasti Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/dijemss.v6i2.3798

Abstract

This study aims to determine the potential of Kaliagung Kapanewon Sentolo Village, Kulon Progo Regency, Special Region, it is hoped that with the identification of this, the researcher can formulate a roadmap for the development of Kaliagung Kapanewon Sentolo Village, Kulon Progo Regency, Special Region of Yogyakarta. This research is a qualitative descriptive research. The population in this study is the leaders and community leaders of all community members in Kaliagung Village, Kapanewon Sentolo, Kulon Progo Regency, Special Region of Yogyakarta. The data collection method uses observation, focus discussion groups and literature studies are used to obtain information about the potential of the village, qualitative descriptive analysis specifically using the analysis of strengths, weaknesses, opportunities, and threats. SWOT analysis contributes to the development of strategic management theory, especially in the context of independent village development. The SWOT analysis shows that this framework can be applied effectively in the context of village development. This approach helps to link between internal conditions (local resources) and external conditions (government and market support) in the formulation of development strategies. The results of the EFE and IFE analysis placed the Kaliagung Village in a certain quadrant, which provided a theoretical basis for choosing the most suitable strategy, such as a growth-oriented strategy .
Co-Authors Budi Setyahandana Dian Artanto Doddy Purwadianto Hermawan Astyanto, Achilleus Heryoga Winarbawa Hirmawan Wijanarka I Gusti Ketut Puja I Made Wicaksana Kurniawati, Lucia Maria Polina, Agnes Petrus Kanisius Purwadi Raden Benediktus Dwiseno Wihadi Rines Rines Rubiyatno Rusdi Sambada Stefan Mardikus Vincentia Eka Mulatsih, Maria