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All Journal Rekayasa Mesin Jurnal Rekayasa Material, Manufaktur & Energi
Siregar, A M
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Aerospace Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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Rancang Bangun Mesin Buah Sortir Jeruk Berdasarkan Ukuran Standart Buah Jeruk dengan Kapasitas Penyortiran 500kg/Jam Siregar, Chandra Amirsyah; Siregar, A M; Amri, Ahmad F; ., Zainal; ., Ramadhani; L, M Zulfadli
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.18331

Abstract

North Sumatra is a province that has a fairly extensive agricultural area. One of them is orange plants in the Besitang Sekoci plantation area, Langkat Regency and Karo Regency, North Sumatra Province. So, to support the quality of oranges, a sorting machine is needed that can guarantee the standardization of orange fruit, whether grade 1, 2, 3 and 4. In this research, an orange sorting machine will be designed and built. The sorting machine is designed and made using hollow iron measuring 40mm x 40mm, for the machine stand using UNP iron measuring 100 mm x 50 mm x 5 mm, the sorting or grade tube uses 12 inch paralon pipe, for the frame cover uses plate iron. with a thickness of 1.5mm, uses a conveyor as a distributor, uses an electric motor and gearbox connected to a pulley and belt to drive the machine. Before being built, the design results were also simulated using Solidworks software to determine the strength of the frame on the machine used and to obtain strong material quality when under load. From the simulation results, it is obtained that the machine design is safe to use. The orange fruit sorting machine is capable of sorting fruit according to size standards based on SNI 3165-2009 with a capacity of 500kg/hour.
PENGARUH PARAFFIN WAX SEBAGAI LAPISAN TANKI PADA AIR CONDITIONER WATER HEATER (ACWH) Siregar, Chandra Amirsyah Putra; Siregar, A M; Lubis, R D W; Rudi, Arya; Rosyadi, Irham
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1677

Abstract

Currently air conditioner (AC) has been widely developed, one of which is the development of functions into two functions, namely air conditioning and providing hot water for bathing needs. The method is to utilize the high temperature and pressure of the front coming from the compressor, which is diverted into the water tank (air conditioner water heater (ACWH). So that when it passes through the water tank, heat transfer occurs into the water itself. The problem that arises is that when the AC is not operating, there is no heat source to maintain the water temperature in the tank. So an isolation method is really needed. This research will add phase change material such as paraffin wax as a tank lining. The aim is to lengthen the heat transfer process from inside the tank to the environment. Apart from that, this research also aims to analyze the effect of adding paraffin wax as a tank layer on AC performance. This research was carried out experimentally with a test duration of 7 hours, and cooling without time limit until the water temperature in the tank approached ambient temperature. As a result, it was found that adding a layer of paraffin wax as a tank layer was able to lengthen the heat transfer process from inside the tank to the environment. The time difference found was up to 15 hours. Meanwhile, AC performance decreased compared to tank without a paraffin wax coating.
Tensile Modeling Of Composite Epoxy Modified With Nanosilica Particles ., Mulyadi; Siregar, A M
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.22547

Abstract

The addition of nanosilica particles can enhance mechanical properties of epoxy based composite materials. Tensile behavior is very crucial properties to be investigated due to its appearance frequently in the application. The amount of nanosilica (SiO2) particles was added in 2%, 5%,8 % and 10% of weight to epoxy resin Epikote 828. Dogbone tensile specimens of epoxy modified with nanosilica were tested using universal tensile machine. The results of tensile properties were further elaborated using available analytical model and finite element analysis. Analytical model and finite element analysis using computer can cut the time to market. As the result, the cost can be minimized  compare to experiment based assessment. Tensile behavior improvement is revealed as the nanosilica particles added. A very good correlation among the results from experiment, analytical and finite element analysis has been revealed. 
PENGARUH PARAFFIN WAX SEBAGAI LAPISAN TANKI PADA AIR CONDITIONER WATER HEATER (ACWH) Siregar, Chandra Amirsyah Putra; Siregar, A M; Lubis, R D W; Rudi, Arya; Rosyadi, Irham
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1677

Abstract

Currently air conditioner (AC) has been widely developed, one of which is the development of functions into two functions, namely air conditioning and providing hot water for bathing needs. The method is to utilize the high temperature and pressure of the front coming from the compressor, which is diverted into the water tank (air conditioner water heater (ACWH). So that when it passes through the water tank, heat transfer occurs into the water itself. The problem that arises is that when the AC is not operating, there is no heat source to maintain the water temperature in the tank. So an isolation method is really needed. This research will add phase change material such as paraffin wax as a tank lining. The aim is to lengthen the heat transfer process from inside the tank to the environment. Apart from that, this research also aims to analyze the effect of adding paraffin wax as a tank layer on AC performance. This research was carried out experimentally with a test duration of 7 hours, and cooling without time limit until the water temperature in the tank approached ambient temperature. As a result, it was found that adding a layer of paraffin wax as a tank layer was able to lengthen the heat transfer process from inside the tank to the environment. The time difference found was up to 15 hours. Meanwhile, AC performance decreased compared to tank without a paraffin wax coating.
Co-Authors ., Ramadhani ., Zainal Amri, Ahmad F L, M Zulfadli Lubis, R D W Mulyadi . Rosyadi, Irham Rudi, Arya Siregar, Chandra Amirsyah Siregar, Chandra Amirsyah Putra