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Analisa beban static pada tabung Apar tepung biji durian menggunakan Metode CAE (Computer Aided Engineering) Harahap, Roby Alfiah; Siregar, Chandra Amirsyah Putra
Jurnal VORTEKS Vol. 4 No. 2 (2023): Oktober 2023
Publisher : Program Studi Teknik mesin, Fakultas Teknik, Universitas Al Azhar Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54123/vorteks.v4i2.308

With the increasing science of technology, especially in the industrial world, currently experiencing increasingly rapid progress will bring consequences and influences to the continued need for various tools to facilitate and expedite work in various fields both as complements and main products. This is what drives us to design, build and analyze an APAR (Light Fire Extinguisher) using the basic ingredients of durian seed flour and Nitrogen (N). The material used in making this apar is carbon steel with a length of 530 mm, diameter: 150 mm and tube thickness of 6 mm. Because of the static fluid in the apar, the analysis carried out is load static analysis on durian seed flour apar tubes using the CAE (Computer Aided Engineering) method, which includes stress, strain and changes in shape / displacement on each element of the durian seed flour fire extinghuisher tube with normal pressure variables of at least 16 bar and a maximum of 18 bar. The results of this analysis showed a stress of 0.607 N/m and experienced an ESTRN strain of 2.817e – 06 then underwent a change in shape / displacement of 1,000e – 30 mm at a normal pressure variable of at least 16 bar. Then with a normal pressure variable of a maximum of 18 bar get a stress result of 0.545 N/m and experience an ESTRN strain of 2.817e – 06 then experience a change in shape / displacement of 1,000-30 mm.

Eksperimental Kekerasan Dan Struktur Mikro Pada Produk Foot Step Berbahan Limbah Alumunium Hasil Pengecoran Cetakan Pasir Silika Berpengikat Bentonit S, Dendi; Siregar, Ahmad Marabdi; Siregar, Chandra Amirsyah Putra; Nasution, Arya Rudi; Mahjudin, Mahyunirsyah
Rekayasa Material, Manufaktur dan Energi Vol 5, No 1: Maret 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i1.10266

This study aims to determine the results of the hardness values of castings using silica sand molds on market products and the microstructure contained in the results of various mold castings. Aluminum is often used as a material for making automotive components, machinery, art objects, and household appliances. Aluminum is a lightweight metal that is corrosion resistant. The foundry industry has now developed a lot from metal casting to non-metal casting. One of the metal casting technologies known today is metal casting technology with sand casting, the casting carried out in this study uses sand molds. The materials used in this study include silica sand, bentonite, water, aluminum waste, and the tools used include patterns, melting furnaces, scales, sand paper. In this research, testing, hardness test and microstructure test were carried out. The results of the hardness test on the standard specimen have an average value of 76.33 BHN, the first mold variation specimen has an average value of 63.69 BHN, and the second mold variation specimen has an average value of 63.84 BHN. In the microstructure test, the first variation of the castings had good aluminum dispersion, a high level of porosity, and for the second variation specimen the castings had good aluminum dispersion and low porosity. After seeing the results of the hardness and microstructure tests, it can be explained that the market product has a better value for the test results, this is because the results of the castings use permanent molds, and it can also be seen that the results of the microstructure affect a hardness value of the two results of the bentonite-binding silica sand mold castings.

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

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.

STUDI EKSPERIMENTAL PENGARUH EFEKTIFITAS ACWH TERHADAP PANJANG PIPA KAPILER SEBAGAI PENGHANTAR PANAS Siregar, Chandra Amirsyah Putra; Siregar, AM; Affandi, Affandi
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol 11, No 2 (2020): JURNAL SIMETRIS VOLUME 11 NO 2 TAHUN 2020
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v11i2.5053

ACWH (Air Conditioner Water Heater) merupakan aplikasi rekayasa teknologi AC yang memanfaatkan panas buang dari kompresor. Pemanfaatannya dengan menambahkan alat penukar kalor (APK) yang bertujuan untuk memanaskan air didalam tanki, sehingga dapat memenuhi kebutuhan air panas untuk mandi. Dalam penelitia ini, APK yang digunakan adalah pipa kapiler berbahan tembaga. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh panjang pipa kapiler terhadap kinerja ACWH. Variasi panjang pipa kapiler yakni 8 m (1/2 dari ukuran tinggi tanki) dengan 15 lilitan dan pipa dengan panjang 16m dengan 30 lilitan (setinggi tanki). Diameter lilitan sebesar 150 mm. Variable yang akan diuji dan diamati adalah hasil temperature pemanasan air, temperature refrigerant keluar kompresor, dan juga temperature refrigerant masuk kondensor pada waktu 60 menit. Pengujian dilakukan terhadap 3 temperatur evaporator yang berbeda yakni 16 0C, 18 0C, dan 20 0C. Hasil pengujian menunjukkan bahwa alat penukar kalor dengan panjang pipa kapiler 16 m lebih efektif untuk memanaskan air dibandingkan dengan alat penukar kalor dengan panjang pipa kapiler 8 m. Temperatur air dalam tanki dengan pengujian temperatur evaporator 16 0C sebesar 53.81°C dengan panjang pipa kapiler 16m. Sedangkan panjang pipa 8m, diperoleh temperatur air dalam tanki sebesar 53, 69 0C. Untuk pengujian dengan temperatur evaporator 18 0C dan 20 0C dengan menggunakan panjang pipa kapiler 16 m hasilnya masing-masing sebesar 51°C dan 46.81°C. Sedangkan menggunakan pipa kapiler 8m hasilnya masing-masing sebesar 49.94 0C dan 49.06 0C

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

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.

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