Pub Date : 2023-11-30DOI: 10.33795/j-meeg.v2i2.4731
Zulfa Khalida, Kartika Candra Dewi, Siti Musyarrofah, Hadi Rahmad
Increasing heat transfer in condensation for low surface tension fluid is dominated by using extended area (fin). One of the extended area on pipe is integral fin tube. Designing of integral fin tube should be conducted due to generate optimal condition such as designing fin spacing. Fin spacing has significantly impacted to heat transfer enhancement. Whereas the material of pipe is copper since has higher heat conductivity than others and fluid working is methanol. To predict optimal geometry of integral fin tube is conducted by using mathematical simulation by dividing area into flooded and unflooded. The active area or unflooded area represents the heat transfer area adn enhancement. In this experiment is found that the optimum fin spasing is 1 mm
{"title":"OPTIMALIZATION OF INTEGRAL FIN TUBE IN OUTSIDE CONDENSATION BASED ON FLOODING ANGLE","authors":"Zulfa Khalida, Kartika Candra Dewi, Siti Musyarrofah, Hadi Rahmad","doi":"10.33795/j-meeg.v2i2.4731","DOIUrl":"https://doi.org/10.33795/j-meeg.v2i2.4731","url":null,"abstract":"Increasing heat transfer in condensation for low surface tension fluid is dominated by using extended area (fin). One of the extended area on pipe is integral fin tube. Designing of integral fin tube should be conducted due to generate optimal condition such as designing fin spacing. Fin spacing has significantly impacted to heat transfer enhancement. Whereas the material of pipe is copper since has higher heat conductivity than others and fluid working is methanol. To predict optimal geometry of integral fin tube is conducted by using mathematical simulation by dividing area into flooded and unflooded. The active area or unflooded area represents the heat transfer area adn enhancement. In this experiment is found that the optimum fin spasing is 1 mm","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":" 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139207110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-16DOI: 10.33795/j-meeg.v2i2.3226
Indra Wahyu Prasetyo Indra
The purpose of this study is to determine whether there is a significant effect by replacing the throttle body diameter variation on power and specific fuel consumption in a 149cc gasoline engine. This research uses the experimental design method. The results obtained the highest power data value of 10.2 HP achieved at 3500 rpm when using a 26mm throttle body, the highest power data value of 10.3 HP achieved at 5000 rpm when using a 28mm throttle body, the highest power data value of 11 HP achieved at 3500 rpm when using a 30mm throttle body. For the largest specific fuel consumption data value when using a 26mm throttle body of 0.0574785 kg/hp.h achieved at 5500 rpm, the largest specific fuel consumption data when using a 28mm throttle body of 0.05806907 kg/hp.h achieved at 5500 rpm, and the largest specific fuel consumption data when using a 30mm throttle body of 0.06013069 kg/hp.h achieved at 5500 rpm.
{"title":"THE EFFECT OF VARIATION IN THROTTLE BODY DIAMETER AND ENGINE SPEED ON POWER AND SPECIFIC FUEL CONSUMPTION IN A 149 CC GASOLINE ENGINE","authors":"Indra Wahyu Prasetyo Indra","doi":"10.33795/j-meeg.v2i2.3226","DOIUrl":"https://doi.org/10.33795/j-meeg.v2i2.3226","url":null,"abstract":"The purpose of this study is to determine whether there is a significant effect by replacing the throttle body diameter variation on power and specific fuel consumption in a 149cc gasoline engine. This research uses the experimental design method. The results obtained the highest power data value of 10.2 HP achieved at 3500 rpm when using a 26mm throttle body, the highest power data value of 10.3 HP achieved at 5000 rpm when using a 28mm throttle body, the highest power data value of 11 HP achieved at 3500 rpm when using a 30mm throttle body. For the largest specific fuel consumption data value when using a 26mm throttle body of 0.0574785 kg/hp.h achieved at 5500 rpm, the largest specific fuel consumption data when using a 28mm throttle body of 0.05806907 kg/hp.h achieved at 5500 rpm, and the largest specific fuel consumption data when using a 30mm throttle body of 0.06013069 kg/hp.h achieved at 5500 rpm.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139267554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-16DOI: 10.33795/j-meeg.v2i2.3007
Hafid Wisnu
ECU is an electronic device for controlling electronic systems on motorcycles. Centrifugal clutch uses centrifugal force to connect the engine to the wheels. Selection of the right ECU and centrifugal clutch can improve engine performance. This study compares engine performance using different ECUs and centrifugal clutches on Honda Vario 150cc motorcycles. The research method uses experiments and data analysis. The results show that the use of a racing ECU produces the best power at 3500 rpm, which is 14.43 hp with standard clutch lining. Power increase of 1.53 hp from standard conditions. The best acceleration of 9.4 hp is achieved with a racing ECU and a modified clutch pad (7 cm long). At high speed, the highest power reaches 11.93 Hp at 7500 rpm with a modified clutch lining (length 7 cm). The best torque is 42.22 Nm at 1500 rpm with a racing ECU and modified clutch lining (7 cm long), an increase of 2.4 Nm from the standard 39.82 Nm..
{"title":"THE INFLUENCE OF USING THE TYPE OF ECU ELECTRONIC CONTROL UNIT) AND THE TYPE OF CENTRIFUGAL CLUTCH ON 150 CC ENGINE PERFORMANCE","authors":"Hafid Wisnu","doi":"10.33795/j-meeg.v2i2.3007","DOIUrl":"https://doi.org/10.33795/j-meeg.v2i2.3007","url":null,"abstract":"ECU is an electronic device for controlling electronic systems on motorcycles. Centrifugal clutch uses centrifugal force to connect the engine to the wheels. Selection of the right ECU and centrifugal clutch can improve engine performance. This study compares engine performance using different ECUs and centrifugal clutches on Honda Vario 150cc motorcycles. The research method uses experiments and data analysis. The results show that the use of a racing ECU produces the best power at 3500 rpm, which is 14.43 hp with standard clutch lining. Power increase of 1.53 hp from standard conditions. The best acceleration of 9.4 hp is achieved with a racing ECU and a modified clutch pad (7 cm long). At high speed, the highest power reaches 11.93 Hp at 7500 rpm with a modified clutch lining (length 7 cm). The best torque is 42.22 Nm at 1500 rpm with a racing ECU and modified clutch lining (7 cm long), an increase of 2.4 Nm from the standard 39.82 Nm..","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139269480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-16DOI: 10.33795/j-meeg.v2i2.3461
Muhammad rifa'i Pai
Lemuru fish is a typical Sumbawa dish made from many types of fish and processed through various processes such as salting, salting and drying. The purpose of this research is the time and temperature of the drying process. The independent variables are: variations in temperature (50ºC, 60ºC, 70ºC) and time (180 minutes, 240 minutes, 300 minutes). After analysis, the following conclusions can be drawn. The drying speed is 180 minutes at 70°C. The highest drying speed was 0.98 g/minute, while the lowest was 300 minutes at 50 °C and a value of 0.56 g/minute. The air content temperature is 60⁰C and 70⁰C according to the quality standard for dried fish (SNI 82732016). Temperature 50 ⁰C 240 and time 300 minutes air content 32.67 n 28.33%. Drying time of 50% temperature 180 minutes gives 8.87% efficiency at lowest temperature 70ºC 300 minutes gives 3.64% The lowest material consumption is 180 minutes at 50ºC gives a value of 0.087 kg, the highest fuel consumption at 70ºC gets a value of 0.31 kg
{"title":"EFFECT OF DRYING TIME AND TEMPERATURE OF LPG FUEL CONSUMPTION DURING THE DRYING OF BAGE FISH TYPE TRAY DRAYER","authors":"Muhammad rifa'i Pai","doi":"10.33795/j-meeg.v2i2.3461","DOIUrl":"https://doi.org/10.33795/j-meeg.v2i2.3461","url":null,"abstract":"Lemuru fish is a typical Sumbawa dish made from many types of fish and processed through various processes such as salting, salting and drying. The purpose of this research is the time and temperature of the drying process. The independent variables are: variations in temperature (50ºC, 60ºC, 70ºC) and time (180 minutes, 240 minutes, 300 minutes). After analysis, the following conclusions can be drawn. The drying speed is 180 minutes at 70°C. The highest drying speed was 0.98 g/minute, while the lowest was 300 minutes at 50 °C and a value of 0.56 g/minute. The air content temperature is 60⁰C and 70⁰C according to the quality standard for dried fish (SNI 82732016). Temperature 50 ⁰C 240 and time 300 minutes air content 32.67 n 28.33%. Drying time of 50% temperature 180 minutes gives 8.87% efficiency at lowest temperature 70ºC 300 minutes gives 3.64% The lowest material consumption is 180 minutes at 50ºC gives a value of 0.087 kg, the highest fuel consumption at 70ºC gets a value of 0.31 kg","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"12 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139270141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melvin Emil Simanjuntak, Nelson Manurung, Melvin B. H. Sitorus, Jeremi Gideon Turnip, Hendry H. Lumbantoruan, Teng Sutrisno, Ian Hardianto Siahaan, Janter P. Simanjuntak
Jamur tiram sudah cukup banyak dikonsumsi masyarakat pada saat ini. Untuk dapat disimpan lebih lama kadar air jamur perlu diturunkan hingga kurang dari 10%. Pengeringan yang banyak digunakan untuk jamur adalah pengeringan surya. Penggunaan pengering rotary dapat mempersingkat waktu pengeringan. Penelitian ini meliputi rancang bangun dan pengujian pengeringan dari mesin pengering rotari yang menggunakan energi surya sebagai pemanas dan penggerak. Hasil rancang bangun memperoleh alat pengering yang dapat beroperasi dengan baik. Ukuran panjang, lebar dan tinggi ruang pengering masing masing 500 mm x 500 mm x 1250 mm dan memiliki 3 drum pemutar. Sel surya untuk menyerap energi matahari untuk memutar drum. Untuk menaikkan temperatur udara pengering digunakan dua buah kolektor surya Sampel jamur dicacah dengan ukuran sekitar 1 cm yang diletakkan dalam drum yang berputar 30 rpm. Setiap drum berisi 400 gr sampel. Kolektor surya yang diletakkan pada arah utara dan selatan. Pengukuran massa dilakukan setiap 30 menit. Hasil pengujian menunjukkan kadar air jamur pada drum 1, 2 dan 3 berkurang masing masing dari sebesar 96,8%, 92,2%, dan 96,7% menjadi masing masing sebesar 7,8%, 1,2% dan 4,7% pada pukul 16,25 di hari II. Kadar air mencapai 10% setelah pengeringan selama 5,5; 4,5 dan 6,5 jam.
{"title":"Rancang Bangun dan Pengujian Mesin Pengering Rotari dengan Pemanas dan Penggerak Tenaga Surya pada Pengeringan Jamur Tiram","authors":"Melvin Emil Simanjuntak, Nelson Manurung, Melvin B. H. Sitorus, Jeremi Gideon Turnip, Hendry H. Lumbantoruan, Teng Sutrisno, Ian Hardianto Siahaan, Janter P. Simanjuntak","doi":"10.9744/jtm.20.2.31-38","DOIUrl":"https://doi.org/10.9744/jtm.20.2.31-38","url":null,"abstract":"Jamur tiram sudah cukup banyak dikonsumsi masyarakat pada saat ini. Untuk dapat disimpan lebih lama kadar air jamur perlu diturunkan hingga kurang dari 10%. Pengeringan yang banyak digunakan untuk jamur adalah pengeringan surya. Penggunaan pengering rotary dapat mempersingkat waktu pengeringan. Penelitian ini meliputi rancang bangun dan pengujian pengeringan dari mesin pengering rotari yang menggunakan energi surya sebagai pemanas dan penggerak. Hasil rancang bangun memperoleh alat pengering yang dapat beroperasi dengan baik. Ukuran panjang, lebar dan tinggi ruang pengering masing masing 500 mm x 500 mm x 1250 mm dan memiliki 3 drum pemutar. Sel surya untuk menyerap energi matahari untuk memutar drum. Untuk menaikkan temperatur udara pengering digunakan dua buah kolektor surya Sampel jamur dicacah dengan ukuran sekitar 1 cm yang diletakkan dalam drum yang berputar 30 rpm. Setiap drum berisi 400 gr sampel. Kolektor surya yang diletakkan pada arah utara dan selatan. Pengukuran massa dilakukan setiap 30 menit. Hasil pengujian menunjukkan kadar air jamur pada drum 1, 2 dan 3 berkurang masing masing dari sebesar 96,8%, 92,2%, dan 96,7% menjadi masing masing sebesar 7,8%, 1,2% dan 4,7% pada pukul 16,25 di hari II. Kadar air mencapai 10% setelah pengeringan selama 5,5; 4,5 dan 6,5 jam.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"39 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136381975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hanni Maksum Ardi, Mokhamad Munir Fahmi, Dibyo Setiawan, Muhammad Yusup Efendi
Isu transisi energi menarik perhatian masyarakat global dengan upaya untuk konservasi energi di masa depan dan menjaga keberlangsungan ekosistem makhluk hidup. Transisi energi adalah proses konversi sumber energi berbasis fosil menjadi penggunaan energi bersih dan ramah lingkungan seperti panel surya, air, panas bumi, dan angin. Upaya Indonesia dalam upaya menjalankan transisi energi bersih, Solusi pemanfaatan dengan penerapan Pembangkit Listrik Tenaga Mikrohidro pada Turbin vorteks menjadi energi listrik dengan unit generator. Turbin vorteks memiliki kebutuhan head rendah. Konstruksi fisik turbin vorteks sudah tersedia di laboratorium, selanjutnya di susun perencanaan transmisi, roda gigi dan generator. Tujuan kegiatan ini menyusun perencanaan transmisi mekanik pada turbin vortex berupa roda gigi dan generator. Metodologi menggunakan pendekatan rancangan teknis baik mengacu standard perencanaan komponen elemen mesin maupun literasi jurnal yang telah dilakukan beberapa peneliti, hal tersebut diterapkan pada rancangan desain transmisi roda gigi dan generator. Hasil rancangan diperoleh daya rencana pembangkit sebesar 1500watt dengan putaran 250rpm, dari daya dan putaran tersebut, direncanakan transmisi roda gigi dan generator dengan hasil sebagai berikut: transmisi yang digunakan antara lain poros dimensi ⌀52 mm x 100 mm, kopling cakar tipe SX095. Roda gigi payung BG 134 S R2 Scheme 30 dengan rasio putaran 1:2. Puli yang terhubung dengan roda gigi dengan kode A127 dan puli yang tehubung dengan generator dengan kode A63,5. Puli di sambung dengan sabuk tipe V kode A44.
能源转型问题通过保护未来的能源和维持生物生态系统来吸引全球社会的注意。能源的转换是将以化石为基础的能源转换成太阳能电池板、水、地热和风能等清洁、环保能源的过程。印度尼西亚为实现清洁能源转型所做的努力，利用利用水力发电将涡流涡轮上的微型水电发电应用于发电机发电。漩涡涡轮机的需求很低。涡流涡轮的物理构造可以在实验室里找到，然后是传动计划、齿轮和发电机。这项活动的目的是规划齿轮和发电机等涡流涡轮机的机械传输。方法方法采用技术设计方法，既可参考机械元件的规划标准，也可参考一些研究人员采用的日志文字法，这适用于齿轮传动的设计和发电机。设计结果电源电站计划1500watt 250rpm轮,恋物和大圈的结果,变速箱齿轮和发电机的计划如下:包括使用的传输轴维度⌀52毫米×100毫米,离合器SX095类型的爪子。伞形齿轮为134 S R2 Scheme 30，转速为1:2。连接齿轮的Puli与A127代码和Puli连接到发电机的a63.5代码。连接到V型传送带A44。
{"title":"Perencanaan Transmisi Mekanik Roda Gigi dan Generator Turbin Vorteks PLTMH","authors":"Hanni Maksum Ardi, Mokhamad Munir Fahmi, Dibyo Setiawan, Muhammad Yusup Efendi","doi":"10.9744/jtm.20.2.55-63","DOIUrl":"https://doi.org/10.9744/jtm.20.2.55-63","url":null,"abstract":"Isu transisi energi menarik perhatian masyarakat global dengan upaya untuk konservasi energi di masa depan dan menjaga keberlangsungan ekosistem makhluk hidup. Transisi energi adalah proses konversi sumber energi berbasis fosil menjadi penggunaan energi bersih dan ramah lingkungan seperti panel surya, air, panas bumi, dan angin. Upaya Indonesia dalam upaya menjalankan transisi energi bersih, Solusi pemanfaatan dengan penerapan Pembangkit Listrik Tenaga Mikrohidro pada Turbin vorteks menjadi energi listrik dengan unit generator. Turbin vorteks memiliki kebutuhan head rendah. Konstruksi fisik turbin vorteks sudah tersedia di laboratorium, selanjutnya di susun perencanaan transmisi, roda gigi dan generator. Tujuan kegiatan ini menyusun perencanaan transmisi mekanik pada turbin vortex berupa roda gigi dan generator. Metodologi menggunakan pendekatan rancangan teknis baik mengacu standard perencanaan komponen elemen mesin maupun literasi jurnal yang telah dilakukan beberapa peneliti, hal tersebut diterapkan pada rancangan desain transmisi roda gigi dan generator. Hasil rancangan diperoleh daya rencana pembangkit sebesar 1500watt dengan putaran 250rpm, dari daya dan putaran tersebut, direncanakan transmisi roda gigi dan generator dengan hasil sebagai berikut: transmisi yang digunakan antara lain poros dimensi ⌀52 mm x 100 mm, kopling cakar tipe SX095. Roda gigi payung BG 134 S R2 Scheme 30 dengan rasio putaran 1:2. Puli yang terhubung dengan roda gigi dengan kode A127 dan puli yang tehubung dengan generator dengan kode A63,5. Puli di sambung dengan sabuk tipe V kode A44.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135012481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Willyanto Anggono, Ronaldo Febrian, Ivan Christian Hernando, Teng Sutrisno
Ejector pump merupakan salah satu jenis alat/mesin fluida yang banyak digunakan di penindustrian yang membutuhkan fluida bertekanan tinggi. Tujuan yang ingin dicapai dalam penggunaan ejector adalah kemampuan hisap yang tinggi pada secondary flow (inlet suction flow). Bagian bagian utama pada ejector adalah nozzle, secondary flow/inlet suction flow, ruang pencampuran dan diffuser. Adapun faktor lain yang berpengaruh dalam kemampuan hisap ejector dalam menvakum/menghisap yaitu, flowrate dan diameter exit nozzle pada primary flow (injection motive fluid). Penelitian ini dimaksudkan untuk memperoleh seberapa besar pengaruh yang diberikan dari perbedaan ukuran atau level pada primary flow, meliputi flowrate sebesar15 L/min, 20 L/min dan 25 L/min, dan diameter exit nozzle 5 mm, 6, mm dan 7mm terhadap pressure vacuum dan flowrate vacuum pada secondary flow. Penelitian ini dilakakukan secara langsung dengan menggunakan ejector pump. Hasil dari pengujian ini menujukan bahwa flowrate (25 L/min) menghasilkan flowrate vacuum dan pressure vacuum paling besar. Kemudian diameter exit nozzle 7 mm menghasilkan flowrate vacuum paling besar dan diameter exit nozzle 5 mm menghasilkan pressure vacuum paling besar.
{"title":"Pengaruh Flowrate dan Diameter Exit Nozzle terhadap Kemampuan Vacuum Pada Ejector Pump","authors":"Willyanto Anggono, Ronaldo Febrian, Ivan Christian Hernando, Teng Sutrisno","doi":"10.9744/jtm.20.2.64-69","DOIUrl":"https://doi.org/10.9744/jtm.20.2.64-69","url":null,"abstract":"Ejector pump merupakan salah satu jenis alat/mesin fluida yang banyak digunakan di penindustrian yang membutuhkan fluida bertekanan tinggi. Tujuan yang ingin dicapai dalam penggunaan ejector adalah kemampuan hisap yang tinggi pada secondary flow (inlet suction flow). Bagian bagian utama pada ejector adalah nozzle, secondary flow/inlet suction flow, ruang pencampuran dan diffuser. Adapun faktor lain yang berpengaruh dalam kemampuan hisap ejector dalam menvakum/menghisap yaitu, flowrate dan diameter exit nozzle pada primary flow (injection motive fluid). Penelitian ini dimaksudkan untuk memperoleh seberapa besar pengaruh yang diberikan dari perbedaan ukuran atau level pada primary flow, meliputi flowrate sebesar15 L/min, 20 L/min dan 25 L/min, dan diameter exit nozzle 5 mm, 6, mm dan 7mm terhadap pressure vacuum dan flowrate vacuum pada secondary flow. Penelitian ini dilakakukan secara langsung dengan menggunakan ejector pump. Hasil dari pengujian ini menujukan bahwa flowrate (25 L/min) menghasilkan flowrate vacuum dan pressure vacuum paling besar. Kemudian diameter exit nozzle 7 mm menghasilkan flowrate vacuum paling besar dan diameter exit nozzle 5 mm menghasilkan pressure vacuum paling besar.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136381971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sebuah perusahaan penghasil besi beton menghadapi masalah kecacatan pada produk akhir dan tidak memiliki sistem pengendalian kualitas yang baik dan terstruktur. Hal ini menyebabkan menurunnya kepuasan pelanggan akibat tingginya kecacatan pada besi beton. Penelitian ini inging mengurangi kecacatan dengan memakai seven quality tools dan failure mode and effects analysis (FMEA) serta merancang sistem pengendalian kualitas. Hasil penelitian menunjukkan setelah melakukan implementasi pengendalian kualitas, kecacatan besi beton di proses kritis dapat diminimalisir. Proses roughing mill mengalami penurunan kecacatan sebesar 37.98%, sedangkan pada proses intermediate mill mengalami penurunan kecacatan sebesar 38.20%. Faktor penyebab utama terjadinya produk cacat adalah Faktor mesin (tidak dilakukan perawatan secara berkala), kemudian diikuti faktor manusia, faktor metode dan faktor material sebagai penyebab lain yang dapat menimbulkan kecacatan pada besi beton.
{"title":"Perancangan Sistem Pengendalian Kualitas Di Perusahaan Besi Beton","authors":"Didik Wahjudi, Nelson Sutanto","doi":"10.9744/jtm.20.2.39-45","DOIUrl":"https://doi.org/10.9744/jtm.20.2.39-45","url":null,"abstract":"Sebuah perusahaan penghasil besi beton menghadapi masalah kecacatan pada produk akhir dan tidak memiliki sistem pengendalian kualitas yang baik dan terstruktur. Hal ini menyebabkan menurunnya kepuasan pelanggan akibat tingginya kecacatan pada besi beton. Penelitian ini inging mengurangi kecacatan dengan memakai seven quality tools dan failure mode and effects analysis (FMEA) serta merancang sistem pengendalian kualitas. Hasil penelitian menunjukkan setelah melakukan implementasi pengendalian kualitas, kecacatan besi beton di proses kritis dapat diminimalisir. Proses roughing mill mengalami penurunan kecacatan sebesar 37.98%, sedangkan pada proses intermediate mill mengalami penurunan kecacatan sebesar 38.20%. Faktor penyebab utama terjadinya produk cacat adalah Faktor mesin (tidak dilakukan perawatan secara berkala), kemudian diikuti faktor manusia, faktor metode dan faktor material sebagai penyebab lain yang dapat menimbulkan kecacatan pada besi beton.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"163 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136381968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saat ini ketergantungan Indonesia terhadap energi fosil dalam memenuhi kebutuhan energi di dalam negeri masih tinggi. Di sisi lain, penggunaan bahan bakar fosil sebagai sumber energi nasional merupakan salah satu faktor penyumbang dalam peningkatan emisi gas rumah kaca yang merusak lingkungan. Beranjak dari hal tersebut, maka perlu adanya alternatif lain seperti penggunaan bioetanol yang lebih ramah lingkungan. Biomassa yang dimanfaatkan sebagai bioetanol dalam penelitian ini ialah kulit manggis karena kandungan lignin, selulosa, serta hemiselulosa berturut-turut sebesar 38.2; 30.7; 29.8% yang dapat dikonversi menjadi bioetanol generasi dua. Penelitian terkait pemanfaatan kullit manggis sebagai bioetanol belum banyak dilakukan, sehingga tujuan dari penelitian ini adalah mengetahui karakteristik dari bioetanol yang dihasilkan serta konsentrasi ragi yang paling optimum dalam menghasilkan volume bioetanol. Metode penelitian yang digunakan dalam produksi bioetanol adalah sakarifikasi menggunakan enzim selulase campuran Aspergillus niger dan Trichoderma reesei perbandingan 1:2 dan fermentasi dengan variasi konsentrasi ragi 2; 4; 6 g/100 mL. Proses karakterisasi menggunakan instrumen GC, AAS, pH meter, serta proses titrasi. Penelitian ini memberikan hasil bahwa variasi ragi 6% merupakan konsentrasi yang paling optimum dalam menghasilkan volume bioetanol sebanyak 160 mL.
{"title":"Pemanfaatan Kulit Manggis (Garcinia mangostana L.) sebagai Bioetanol Generasi Dua (G2) dengan Variasi Konsentrasi Ragi Melalui Metode Simultaneous Saccharification and Fermentation (SSF)","authors":"Dikdik Mulyadi, Lela Laitul Khumaisah, Sugiarti Rahayu","doi":"10.9744/jtm.20.2.46-54","DOIUrl":"https://doi.org/10.9744/jtm.20.2.46-54","url":null,"abstract":"Saat ini ketergantungan Indonesia terhadap energi fosil dalam memenuhi kebutuhan energi di dalam negeri masih tinggi. Di sisi lain, penggunaan bahan bakar fosil sebagai sumber energi nasional merupakan salah satu faktor penyumbang dalam peningkatan emisi gas rumah kaca yang merusak lingkungan. Beranjak dari hal tersebut, maka perlu adanya alternatif lain seperti penggunaan bioetanol yang lebih ramah lingkungan. Biomassa yang dimanfaatkan sebagai bioetanol dalam penelitian ini ialah kulit manggis karena kandungan lignin, selulosa, serta hemiselulosa berturut-turut sebesar 38.2; 30.7; 29.8% yang dapat dikonversi menjadi bioetanol generasi dua. Penelitian terkait pemanfaatan kullit manggis sebagai bioetanol belum banyak dilakukan, sehingga tujuan dari penelitian ini adalah mengetahui karakteristik dari bioetanol yang dihasilkan serta konsentrasi ragi yang paling optimum dalam menghasilkan volume bioetanol. Metode penelitian yang digunakan dalam produksi bioetanol adalah sakarifikasi menggunakan enzim selulase campuran Aspergillus niger dan Trichoderma reesei perbandingan 1:2 dan fermentasi dengan variasi konsentrasi ragi 2; 4; 6 g/100 mL. Proses karakterisasi menggunakan instrumen GC, AAS, pH meter, serta proses titrasi. Penelitian ini memberikan hasil bahwa variasi ragi 6% merupakan konsentrasi yang paling optimum dalam menghasilkan volume bioetanol sebanyak 160 mL.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"119 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136381976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-15DOI: 10.33795/jmeeg.v2i1.3438
Aditia Ahmad Wijaksono, Yuniarto Agus
Methanol (CH3OH) is an alcoholic compound that can be used as an alternative fuel. The high oxygen content in methanol allows for complete combustion and is combined with experiments using various types of spark plugs which is expected with a strong spark burning the fuel and air mixture so that the effect on performance increases. The research was carried out using an experimental method, namely by conducting various experiments using different types of spark plugs, namely nickel spark plugs, platinum spark plugs, iridium spark plugs and variations of 90 octane fuel mixtures with methanol ratios of 0%, 5%, 10% on performance with gas emission measurement criteria. throw away. The results of this study indicate that there is an effect of using 90 octane fuel on exhaust emissions, where the use of platinum spark plugs has the lowest CO value at 4500 rpm with a CO emission value of 2.20%, while the lowest HC value is at 4000 rpm of 1.90 ppm using iridium spark plugs
{"title":"THE EFFECT OF VARIATION OF TYPES OF SPARK PLUGS AND MIXTURE OF 90 OCTANE FUEL WITH METHANOL ON 110 CC MOTOR PERFORMANCE","authors":"Aditia Ahmad Wijaksono, Yuniarto Agus","doi":"10.33795/jmeeg.v2i1.3438","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.3438","url":null,"abstract":"Methanol (CH3OH) is an alcoholic compound that can be used as an alternative fuel. The high oxygen content in methanol allows for complete combustion and is combined with experiments using various types of spark plugs which is expected with a strong spark burning the fuel and air mixture so that the effect on performance increases. The research was carried out using an experimental method, namely by conducting various experiments using different types of spark plugs, namely nickel spark plugs, platinum spark plugs, iridium spark plugs and variations of 90 octane fuel mixtures with methanol ratios of 0%, 5%, 10% on performance with gas emission measurement criteria. throw away. The results of this study indicate that there is an effect of using 90 octane fuel on exhaust emissions, where the use of platinum spark plugs has the lowest CO value at 4500 rpm with a CO emission value of 2.20%, while the lowest HC value is at 4000 rpm of 1.90 ppm using iridium spark plugs","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"143 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139350547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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