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Pengaruh Tinggi Cerobong Kompor Terhadap Kinerja Kompor Gasifikasi Top Lit Up Draft Setyawan, Digdo Listyadi; Ilmninafik, Narsul; Sutjahjono, Hary; Hadiatama, Intan; Salwasana, Allisa
JTERA (Jurnal Teknologi Rekayasa) Vol 8, No 2: December 2023
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v8.i2.2023.175-182

Abstract

Kompor gasifikasi tipe Top Lit-Up Draft (TLUD) memiliki keluaran api pada bagian atas kompor dimana nyala api yang dihasilkan oleh kompor ini ditahan di atas biomassa pada titik percampuran dengan udara sekunder. Desain kompor memiliki peran pentinng dalam meningkatkan kinerjanya. Selain itu, terdapat juga komponen lain yang dinilai cukup penting yaitu penambahan cerobong kompor (chimney) yang terletak pada bagian atas kompor sebagai jalur api keluar. Meskipun desain dari cerobong kompor berperan penting dalam pembakaran yang terjadi di kompor gasifikasi TLUD, tetapi masih belum ada studi saintifik yang sistematis mengenai desain cerobong kompor dan pengaruhnya terhadap pembakaran kompor TLUD. Penelitian ini mengunakan motode eksperimental dan bertujuan untuk mengetahui pengaruh tinggi cerobong terhadap kinerja kompor gasifikasi tipe TLUD. Model cerobong kompor diivariasikan ketinggiannya pada  5 cm, 10 cm, dan 15 cm, dengan  kecepatan aliran udara 1,5 m/s, serta bahan bakar biomassa ampas tebu sebanyak 600 gram. Variabel terikat penelitian ini adalah tinggi api, temperatur api, lama nyala api, dan efisiensi termal kompor. Penelitian ini memperoleh kesimpulan tinggi cerobong kompor berpengaruh dalam parameter-parameter  kinerja kompor gasifikasi TLUD  yang dihasilkan, yaitu tinggi api, temperatur api, dan lama nyala api. Semakin tinggi cerobong kompor, semakin tinggi nilai parameter-parameter kinerja kompor gasifikasi TLUD. Namun, tinggi cerobong kompor kurang berpengaruh terhadap nilai efisiensi termal kompor gasifikasi TLUD.
PENGARUH RANGKAIAN SEL PELTIER TERHADAP KINERJA MINI REFRIGERATOR PORTABLE Firmansyah, Gilang; KW, Robertoes Koekoeh; Ilminafik, Nasrul; listyadi S, Digdo; Sholahuddin, Imam
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 1 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Thermoelectric Cooler (TEC) / Peltier cooler box requires DC electric current in operation, so that it can be used as a tool to store portable vaccines that are useful in areas that do not have AC electricity flow. The research method uses experimental methods by making the previous research as a reference for conducting experiments with series variations on TEC. This study uses 2 TECs with a series of series and parallel TEC circuits on polyurethane cooler boxes 5,5 L (280 x 180 x 200) mm, power supplied to series and parallel TEC circuits of 20 W, 30 W, and 40 W while taking data is carried out for 60 minutes. The purpose of the study was to determine the effect of TEC cooling on the cooler, COP value, and efficiency on the system. The cooling capability of the TEC in the cooler shows the temperature in the cooler with the variation of the TEC parallel circuit lower than the series TEC. Calculation of the COP value shows the greater power given to the TEC, the COP value will be smaller, the COP value of the parallel circuit at minute 1 - 3 minutes is smaller than the series TEC, but in the 60th minute the difference in COP value between TEC series and The parallel circuit TEC is not too large. Calculation of cooling box efficiency with vaccine loading shows the highest efficiency is a parallel circuit TEC of 25,84% with input power in a 20 W system and a cooling load of 5,17 W, while the lowest efficiency is a series circuit TEC of 13,48% with input power 40 W and cooling load of 5,39W.
OPTIMASI PARAMETER VACUUM ASSISTED RESIN INFUSION PRODUK FRONT TOP TERHADAP KEKASARAN PERMUKAAN Valerian, Joey; Dwilaksana, Dedi; Syuhri, Ahmad; listyadi S, Digdo; Nashrullah, M Dimyati; Noor HS, Skriptyan
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

The use of composite materials as a substitute for metal materials in the engineering field has become increasingly widespread not only in the field of transportation panels but also in other fields such as property and architecture because alternatives have the advantage of using composite materials to be lightweight, corrosion resistant and strong and can be designed as needed. One of the methods developed to manufacture composite polymers is resin infusion with vacuum assistance. This method is inversely compared to the non-vacuum method. The (VARI) process requires an airtight space in printing and can reduce the fouling effects that occur in non-vacuum processes such as causing a lack of optimal composite material properties. The Taguchi method is a methodology in the field of engineering which is very much aimed at improving a product quality in a time process while at the same time reducing costs and minimal resources. The Taguchi method is a product or process that is robust against noise, therefore this method is a robust design. In writing this research, I have experience in the process of making and researching carbon in body organization in the Mechanical Engineering University of Jember named Tawang Alun, here I will conduct research in analyzing the optimal parameters for the surface roughness characteristics of front cover products made of carbon fiber using a vacuum process. resin infusion aid. The factor that contributes the most to the surface roughness response is vacuum pressure with a contribution of 25.20%. For hardener factor contribution of 14.93% and coating factor of 23.77%. The contribution error that occurs is 36.09%. Each factor has a value contribution that is not too different. Based on the data and analysis results that have been obtained using the Taguchi method with the help of Minitab 19 and Microsoft Excel, it shows that the parameter of vacuum pressure has a significant influence on the results of surface roughness. While the hardener parameter has no significant effect on surface roughness, then the coating parameter has a significant effect on surface roughness. In the calculation of the F test, it can be concluded that the optimal factor parameters in making a front top with a small surface roughness value are 0.4 bar vacuum pressure, 60% hardener and PVAC coating. Keywords: PVAC, vacuum, carbon fiber, resin
PENGARUH VARIASI SUHU SIKLUS THERMAL TERHADAP KEKUATAN BENDING KOMPOSIT UNSATURATED POLYESTER SERAT KELAPA SEMBADA, IQBAL VARIAN; Hermawan, Yuni; listyadi S, Digdo; Sholahudin, Imam; Kristianta, FX
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Composite is one of the materials used in engineering field. This is because composites have strong properties, light weight, corrosion resistance, economical and so on. One of coconut fiber composite composite. Coco fiber in Indonesia is still not utilized to the maximum to increase its economic value. One application of coconut fiber composite usage is for wood replacement wall. This study aims to determine the effect of repeated thermal load on the bending strength of the composite. In this research the material used is coconut fiber coir random orientation direction as reinforced and unsaturated polyester as matrix with fiber volume fraction 5%. The production method used is press hand lay up. Temperature variations are 30oC, 50oC, 70oC, and 90oC with 10 repetitions. Bending test is done with ASTM D790 standard reference. The result of this research shows the highest bending strength in composite with thermal temperature of 30o C equal to 39,68 MPa. While the lowest bending strength occurred at 90°C thermal temperature of 24.60 MPa. From result of research indicate that unsaturated polyester when given heat load continuously will decrease bending strength because debonding failure in matrix.