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All Journal Journal of Mechanical Engineering Science and Technology Jurnal Rekayasa Material, Manufaktur & Energi ABDI SABHA (Jurnal Pengabdian kepada Masyarakat)
Jandri Fan HT Saragi
Universitas HKBP Nommensen Pematangsiantar
Religion Aerospace Engineering Arts Humanities Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Energy and Exergy Efficiency of Double Slope Passive Solar Still Jandri Fan HT Saragi; Wawan Septiawan Damanik
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 4, No 2 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v4i22020p082

Abstract

Solar desalination functions to filter water, both sea water and brackish water, to produce clean water that is fit for consumption with energy from the sun. Solar energy is a renewable energy source that has been widely studied for its use. One of its uses is in a double slope passive solar still where the sun is the main source. Energy and exergy obtained from solar energy are not all used to evaporate water in the desalination system, so it is necessary to calculate efficiency energy and exergy in the system. This study aims to obtain data on the amount of efficiency energy and exergy from the double slope passive solar still as well as the factors that affect efficiency energy and exergy. The results showed that energy efficiency was in the range of 30.20% to 55.15% and exergy efficiency was in the range of 0.93% to 5.36%. The factors that influence the amount of energy efficiency and exergy are solar intensity, basin area, basin cover area, amount of water produced and ambient temperature.
Study of Methanol and Ethanol Absorption on Vacuum Temperature of Adsorption Cooling Machine Adsorption Cycle Jhon Sufriadi Purba; Jandri Fan HT Saragi
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Cooling machines are currently being used more and more in accordance with technological advances and increasing living standards. Common uses are for preserving food, air conditioning, cooling beverages, for making ice cubes, and others. The need for cooling systems in remote areas for various needs such as preservation or storage of food ingredients is felt to be increasing, while the existing conventional cooling systems cannot necessarily be used because not all remote areas have electricity networks, so a simple adsorption cooling system is an alternative for solving problems. cooling system needs in remote areas like this. The purpose of this study was to obtain the optimum vacuum temperature in an adsorption cooler using activated carbon as adsorbent and methanol and ethanol as adsorbate. In this study using the experimental method by analyzing the testing and data processing of methanol and ethanol. The results of this study indicate that the vacuum absorber temperature of the refrigerant (methanol) gets the maximum temperature: 123.53oC on a thermostat with a temperature of 200oC, it can absorb methanol as much as 6.35 ml/kg and produce a water temperature of 9.12oC. Meanwhile, the absorber vacuum temperature for refrigerant (Ethanol) has a maximum temperature of: 123,26oC, on a thermostat with a temperature of 200oC, it can absorb ethanol as much as 6.35 ml/kg and produce a water temperature of 11,79oC. 
Sosialisasi Pembuatan dan Penggunaan Secchi Disk Jandri Fan HT Saragi
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 2 No. 1 (2021): Februari
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v2i1.113

Abstract

Salah satu masalah yang sedang dihadapi di beberapa daerah di Indonesia adalah air. Air merupakan sumber kehidupan yang digunakan untuk berbagai keperluan. Salah satu sumber air yang sering digunakan oleh masyarakat adalah sungai. Sungai merupakan salah satu habitat hidup air bagi sebagian makhluk hidup air tawar. Salah satu unsur kualitas air adalah tingkat kecerahannya. Air dengan tingkat kecerahan yang tinggi sangat memungkinkan terjadinya proses asimilasi dalam perairan. Tingkat kecerahan air sangat mempengaruhi proses fotosintesis fitoplankton. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah untuk membantu masyarakat Kelurahan BP. Nauli Kecamatan Siantar Marihat Kota Pematangsiantar dalam mengetahui tingkat kecerahan air sungai Bah Toge sehingga air sungai dapat dipergunakan untuk berbagai kegiatan yang menguntungkan seperti tambak ikan. Metode pelaksanaan kegiatan adalah memberikan pelatihan dalam pembuatan Secci disk serta penggunaannya. Dari hasil pengujian terhadap kecerahan air sungai Bah Toge diketahui bahwa tingkat kecerahan air pada sungai Bah Toge masih sangat keruh dengan tingkat kecerahan di bawah 50% dari kedalam air.
Pemanfaatan Arus Air untuk Pembangkit Listrik Tenaga Micro Hidro Jandri Fan HT Saragi; Jhon Sufriadi Purba
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 2 No. 3 (2021): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v2i3.466

Abstract

One of the problems being faced in several regions in Indonesia is the source of electrical energy. The demand for electricity from year to year has increased. The development of free energy technology needs to be developed to cover the rapidly increasing demand for electricity. One that can be developed is micro-hydro power plant technology that utilizes water flow as a source of electricity. To make a micro hydro power plant, it is necessary to do research on the available discharge and how much energy and power is generated at that location. The purpose of this community service activity is to help the community find out the potential of river flows in Toba Village, South Siantar District, Pematangsiantar City in its utilization for micro hydro power plants. The method of implementing the activity is Head observation (falling height), river flow velocity, river width, and river flow depth. From the results of observations and measurements of discharge at the service location, it is known that the head (fall height) is 0.5 meters, the river flow speed is 0.74 m/s, the river width is 6.5 meters and the river flow depth is 0.3 meters so that an empirical calculation of the generator discharge is obtained at 1.433 m3/sec., and the power that can be generated is 7.08 kW.
Kajian Saluran Sungai Akibat Gesekan Limbah pada Aliran Sungai di Bantaran Sungai Kelurahan Toba, Kec. Siantar Selatan Jhon Sufriadi Purba; Jandri Fan HT Saragi
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 2 No. 3 (2021): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v2i3.473

Abstract

River pollution is the entry of various substances and non-biodegradable objects that result in contaminated water and loss of function. Besides being a source of various diseases, water pollution also causes flooding. Protecting the river is the same as maintaining survival in the future. Rivers have been the most important part of human life since ancient times. In human evolution, rivers and lakes played an unimaginable role. Rivers are not only important for animals and birds to live, but are also a major source of drinking water. And their environmental value, economic value, and spiritual value touch everyone in the world. In India, people at one time even worshiped rivers as life-giving gods and goddesses. The reason is that every time we search for life, we look for a drop of water first. Rivers carry water and nutrients to areas around the earth. They play a very important role in the water cycle, acting as drainage channels for surface water. Rivers flow almost 75% of the earth's land surface.
Sosialisasi Teknik Pengelasan di SMK Samudera Indonesia Medan Jandri Fan HT Saragi; Tambos August Sianturi; Jhon Sufriadi Purba; Goldberd Harmuda Duva Sinaga
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 3 No. 2 (2022): Juni
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v3i2.640

Abstract

The purpose of this PkM is to provide welding competency skills to SMK Samudera Indonesia Medan students as a provision to enter the job field or for entrepreneurship for SMK and help the productive process of SMKs that lack funding and practicum facilities. The method used to solve the problems that have been formulated, we need a method that must be followed in order to be able to do a good solution, here is the solution method, namely a survey in SMK to get data for PkM as needed, formulate training materials, make a schedule for the implementation of training related to time, arrange instructors who will provide training, make a design evaluation of activities, The implementation of welding training activities was followed by students. The results of the PkM implementation are as follows: Welding skills that can equip vocational students to enter the world of work are being able to operate a welding machine correctly and be able to connect plates using welding. The responses from vocational students with training assistance from the UHKBPNP Mechanical Engineering Study Program are as follows: they are happy because they have received welding skills which they have not done optimally and the teachers hope that next year they can continue with other programs.
Analisis Energi Pada Alat Desalinasi Tenaga Surya Jandri Fan HT Saragi; Eka Putra Dairi Boangmanalu; Angga Bahri Pratama; Franklin Taruyun Hudeardo Sinaga; Al Qadry; Wawan Septiawan Damanik
Rekayasa Material, Manufaktur dan Energi Vol 6, No 2: September 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i2.15169

Abstract

In recent times, many studies have been carried out on desalination systems in areas that have difficulty in obtaining clean water sources. Desalination is a method used to distill salt water or brackish water into clean water using solar power as its energy source. This desalination process is a practical alternative that can be used to offer renewable energy sources that are used to produce clean water. To perform energy analysis, the first law of thermodynamics is used as a basis. This study aims to obtain the results of the amount of energy obtained from the solar desalination system and to determine the factors that greatly affect the amount of energy obtained from the system for evaporating water. The method used in this research is an experiment by testing a solar desalination device for eight days. The results show that the highest thermal energy produced is 8.98 kWh and the lowest is 1.56 kWh, and the factors that influence the amount of thermal energy are the heat transfer coefficient and the amount of distilled water produced by the system.
Co-Authors Al Qadry Angga Bahri Pratama Eka Putra Dairi Boangmanalu Franklin Taruyun Hudeardo Sinaga Goldberd Harmuda Duva Sinaga Jhon Sufriadi Purba Purba, Jhon Sufriadi Tambos Sianturi Wawan Septiawan Damanik Wawan Septiawan Damanik