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All Journal Jurnal Inovator Formosa Journal of Science and Technology (FJST)
Sahat
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Humanities Automotive Engineering Computer Science & IT Education Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Variasi Laju Aliran Air Panas Terhadap Efisiensi Dan Efektifitas Laju Perpindahan Panas Pada Alat Heat Exchanger Tipe Shell And Tube Dengan Aliran Searah Angga Bahri Pratama; Saragi, Jandri Fan HT; Al Qadry; Boangmanalu, Eka Putra Dairi; Sahat; Kadriadi; Fajri, Nural
Jurnal INOVATOR Vol. 6 No. 2 (2023): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v6i2.252

Abstract

Heat exchanger merupakan suatu alat yang digunakan dalam proses perpindahan panas suatu fluida ke fluida lain tanpa adanya perpindahan massa dan dapat digunakan sebagai pemanas atau pendingin. Salah satu jenis heat exchanger yang sering digunakan dalam proses industri adalah shell and tube heat exchanger. Fokus penelitian ini adalah menghitung dan menganalisis efisiensi dan efektivitas laju perpindahan panas pada alat penukar panas tipe shell and tube dengan aliran searah. Metode pengumpulan data adalah pengamatan langsung terhadap alat, dengan selang waktu lima menit untuk setiap pengujian. Setelah dilakukan penelitian dan analisis, hasil penelitian ini menunjukkan bahwa pengaruh variasi aliran pada Vh = ±800 l/h, Vc = ±1000 l/h yang dibuat konstan pada tipe shell and tube, dapat disimpulkan semakin besar laju aliran panas maka semakin besar temperatur yang dihasilkan yaitu dengan temperatur 47.7°C, hal ini juga mempengaruhi waktu pengambilan data, dengan efisiensi yang diperoleh sebesar 146% dan efektifitas = 0.50.
Pengaruh Temperatur terhadap Kekuatan Impak Material Baja ST37 dengan Metode Charpy dan Izod Jandri Fan; Sahat; Al Qadry; Eka Putra Dairi Boangmanalu; Angga Bahri Pratama
Jurnal INOVATOR Vol. 6 No. 2 (2023): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v6i2.254

Abstract

Impact Test can be interpreted as a test that measures the ability of a material to accept impact loads which are measured by the amount of energy required to break the specimen with a swing. The aim of this test is to determine the effect of temperature on the value of energy absorbed by the material and the impact value. The method used in this research is the experimental method, namely the method used to find the effect of temperature on the impact strength of charpy and izod. The results of the charpy and izod impact tests on ST37 Steel specimens prove that there is an influence of temperature on the charpy and izod impact tests. Where the higher the temperature, the higher the energy absorbed and the impact price. Conversely, the lower the temperature, the energy absorbed and the impact price will be lower. In the test results, the lowest energy absorbed in the charpy impact test was 76 J and 22 J in the izod impact test, while the highest energy absorbed in the charpy impact test was 245 J and 114 J in the izod impact test. The lowest impact price in the test was 0.1727 J/mm2 for the charpy impact test and 0.037 J/mm2 for the izod impact test, while the highest impact price in the test was 0.5568 J/mm2 for the charpy impact test and 0.19 J/mm2 for izod impact testing.
Hardness Test Analysis on ST 37 Steel Plate Material and Aluminum Using the Brinell Test Method Sinaga, Franklin Taruyun Hudeardo; Boangmanalu, Eka Putra Dairi; Pratama, Angga Bahri; Saragi, Jandri Fan HT; Al Qadry; Sahat
Formosa Journal of Science and Technology Vol. 2 No. 12 (2023): December 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjst.v2i12.7035

Abstract

One of the most frequently used methods of material testing is hardness testing. The aim of conducting research on material hardness is to determine the hardness value of the material specimens tested, namely ST 37 steel plate and aluminum plate. The test method is to use the Brinell hardness test where the values ​​obtained during testing are from the force load, indenter diameter and pressure trace diameter and the pressure time that has been determined. By using testing tools such as hardness tester, mechanical caliper, indenter, flat file, stopwatch. And the materials used are ST 37 steel plate, aluminum plate and sandpaper. From the test results obtained we can calculate the Brinell hardness value of the test material. The value from the calculation of test data where the highest hardness value using the Brinell method (BHN) for ST 37 steel plate material is 256.992. Meanwhile, the highest hardness value using the Brinell method (BHN) for aluminum plate material is 55,182.
Co-Authors Al Qadry Angga Bahri Pratama Boangmanalu, Eka Putra Dairi Eka Putra Dairi Boangmanalu Fajri, Nural Jandri Fan Kadriadi Saragi, Jandri Fan HT Sinaga, Franklin Taruyun Hudeardo