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Effect of Capillary Pipe Length on Performance Coefficient of Refrigerator by Testing on Two Kinds of Refrigerant Febriansyah, Fikri; Rifky, Rifky
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 2 No. 2 (2023): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v2i2.13061

Abstract

Abstrak Penggunaan pipa kapiler sebagai pengekspansi pada mesin pendingin skala kecil lebih menguntungkan. Kerja mesin pendingin dipengaruhi oleh bentuk dan dimensi pipa kapiler. Tujuan dari penelitian ini untuk mendapatkan CoP refrigerator yang menggunakan bahan refrigeran R-22 dan R410a dengan panjang pipa kapiler yang berbeda. Metode penelitian ini eksperimental dengan dilakukan pengambilan data melalui pengukuran. Penelitian ini menggunakan refrigeran R-22 dan R-410a untuk kebutuhan daya kompresor sebagai parameter penentu nilai CoP mesin pendingin. Variabel yang digunakan yaitu pipa kapiler yang terbuat dari tembaga dengan dimensi 3 m dan 4 m. refrigerator dioperasikan selama 70 menit, dimana setiap 10 menit dilakukan pengambilan data. Hasil penelitian menunjukan bahwa nilai tertinggi koefisien prestasi (CoP) untuk panjang pipa kapiler 3 m dengan refrigeran R-22 sebesar 2,509 dan dengan refrigeran R-410a sebesar 4,326. Untuk panjang pipa kapiler 4 m dengan refrigeran R-22 sebesar 2,752 dan dengan refrigeran R-410a sebesar 4,326. Temperatur keluaran evaporator terendah yang didapat adalah 20,5 dengan ukuran panjang pipa kapiler 3 m untuk refrigeran R-22. Abstract The use of capillary tubes as expanders in small-scale refrigeration machines is more profitable. Cooling machine work is influenced by the shape and dimensions of the capillary tube. The purpose of this study was to obtain a CoP refrigerator using refrigerants R-22 and R410a with different lengths of capillary tubes. This research method is experimental by taking data through measurements. This study uses refrigerants R-22 and R-410a for compressor power requirements as a parameter determining the CoP value of the refrigeration machine. The variable used is a capillary tube made of copper with dimensions of 3 m and 4 m. refrigerator is operated for 70 minutes, where every 10 minutes data is collected. The results showed that the highest value of the coefficient of achievement (CoP) for a capillary tube length of 3 m = 2.509208491 (R-22) and 4.326262393 (R-410a). For a capillary tube length of 4 m = 2.752102768 (R-22) and 4.326262393 (R-410a). The lowest evaporator output temperature obtained is 20.5 with a capillary tube length of 3 m for refrigerant R-22.
Perancangan Alat Pembuat Pelet Pakan Ternak Portable Cahyono, Fajar Nur; Rifky, Rifky; Nofendri, Yos
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 2 No. 2 (2023): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v2i2.13105

Abstract

Abstrak Penelitian pembuatan alat pelet pakan ternak portable diperutukan sebagai alternatif pakan ternak kambing ketika musim kemarau tiba, dimana ketika musim kemarau tiba menyebabkan kelangkaan rumput pakan untuk kebutuhan pakan kambing ternak masyarakat. Teknologi yang digunakan untuk pembuatan alat ini menggunakan mesin penggerak motor bensin 4 langkah kerja dengan kecepatan maksimal 3800 rpm, kapasitas tangki bensin 3,1 liter, dan daya 5.5 HP. Mesin penggerak ini akan menghasilkan daya untuk memutar pulley dan daya tersebut akan diteruskan v-belt ke pulley extruder, extruder yang berfungsi sebagai alat penekan bahan baku untuk pelet yang kemudian dialirkan menuju die. Untuk kapasitas dari alat pencetak pelet pakan ternak ini dapat menghasilkan pelet dengan kapasitas tertentu yang dimana semakin tinggi putaran rpm dari mesin penghasil daya makan akan cepat juga perputaran screw di dalam extruder yang bilamana semakin cepat perpuatan keduanya akan semakin cepat juga bahan pelet yang akan dicetak menjadi pelet. Hasil penelitian mendapatkan bahwa alat pembuat pelet pakan ternak portable sudah dibuat dan hasil pengujian menunjukan bahwa dalam waktu 105 menit dapat menghasilkan pelet sebanyak 125,5 kg dengan produktivitas 1,2 kg/ menit. Abstract Research on making portable animal feed pellets which are intended as an alternative to animal goat feed when the dry season arrives, where when the dry season arrives it causes a scarcity of forage grass for the community's livestock goat feed needs. The technology used to manufacture this tool uses a 4 stroke gasoline engine with a maximum speed of 3800 rpm, a gas tank capacity of 3.1 liters, and a power of 5.5 HP. This driving machine will generate power to rotate the pulley and the power will be transmitted by the v-belt to the pulley extruder, the extruder which functions as a pressing device for raw materials for pellets which are then flowed to the die. For the capacity of this animal feed pellet printer, it can produce pellets with a certain capacity where the higher the rpm rotation of the feeding power-producing machine, the faster the rotation of the screw in the extruder, the faster the rotation of the two, the faster the pellet material to be printed will become. pellets. The results showed that a portable animal feed pellet maker had been made and the test results showed that within 105 minutes it could produce 125.5 kg of pellets with a productivity of 1.2 kg/minute.
Pendayagunaan Energi Matahari sebagai Sumber Energi Listrik Alternatif Menggunakan Generator Termoelektrik Rifky; Nofendri, Yos
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 3 No. 1 (2024): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v3i1.15592

Abstract

Abstrak Energi surya adalah energi terbarukan yang potensinya besar untuk dimanfaatkan. Bentuk energi surya yang telah lama dimanfaatkan manusia adalah energi termalnya. Mulai dari pengeraing hasil bumi, perikanan, sampai pemanas air. Sementara termoelektrik adalah material yang berberntuk modul yang dapat mengubah perbedaan temperatur menjadi energi listrik. Kedua hal inilah yang dipadukan dalam penelitian ini. Penelitian memanfaatkan energi surya sebagai sumber energi listrik menggunakan generator termoelektrik. Adapun tujuan penelitian ini adalah untuk mendapatkan daya luaran semaksimal mungkin dari sistem generator termoelektrik yang susunan modulnya dirangkai dengan sambungan seri dan paralel. Dari daya luaran yang dihasilkan akan didapatkan kelayakan generator termoelektrik untuk dijadikan sumber energi pada model bangunan. Metode penelitian yang digunakan adalah eksperimental, yang didahului dengan perancangan dan pembuatan alat penelitian. Model bangunan dirancang sederhana yang berupa kerangka dengan atapnya adalah sistem generator termoelektrik. Variabel dalam penelitian ini adalah susunan rangkaian sambungan modul termoelektrik secara seri dan secara paralel. Data masukan generator termoelektrik adalah intensitas radiasi, kelembaban udara, temperatur (lingkungan, penyerap panas, sisi panas termoelektrik, sisi dingin termoelektrik, sistem pendingin, air pendingin), dan aliran alir; sedangakan data luarannya adalah tegangan listrik dan arus listrik. Hasil penelitian mendapatkan bahwa sistem generator pada atap model bangunan dengan susunan modul termoelektrik dengan rangkaian sambungan seri menghasilkan daya sebesar 1,029 watt. Sementara sistem generator termoelektrik untuk sambungan modul termoelektrik dengan rangkaian sambungan paralel menghasilkan daya sebesar 0,028 watt. Abstract Background: Solar energy is a renewable energy that has great potential to be utilized. The form of solar energy that humans have long used is thermal energy. Starting from drying agricultural products, fisheries, to water heaters. Meanwhile, thermoelectrics are materials in the form of modules that can convert temperature differences into electrical energy. These two things are combined in this research. Research utilizes solar energy as a source of electrical energy using a thermoelectric generator. The aim of this research is to obtain the maximum possible output power from a thermoelectric generator system whose modules are assembled using series and parallel connections. From the resulting output power, the suitability of the thermoelectric generator will be obtained to be used as an energy source in building models. The research method used is experimental, which is preceded by designing and manufacturing research tools. The building model is designed simply in the form of a frame with a thermoelectric generator system on the roof. The variables in this research are the arrangement of thermoelectric module connection circuits in series and in parallel. The input data of the thermoelectric generator are radiation intensity, air humidity, temperature (environment, heat absorber, thermoelectric hot side, thermoelectric cold side, cooling system, cooling water), and flow rate; while the output data is electric voltage and electric current. The research results showed that the generator system on the roof of the building model with a thermoelectric module arrangement with a series connection produced 1,029 watts of power. Meanwhile, the thermoelectric generator system for connecting thermoelectric modules with a parallel connection circuit produces 0.028 watts of power
Pengaruh Pendinginan terhadap Daya Keluaran dan Efisiensi Sistem Panel Surya Efendi, M Shofriyan; Rifky, Rifky; Nofendri, Yos; rohman, Nur
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 3 No. 2 (2024): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v3i2.16777

Abstract

Salah satu aplikasi energi terbarukan yang memanfaatkan energi matahari adalah panel surya atau sistem fotovoltaik. Kinerja sistem fotovoltaik dipengaruhi oleh besarnya intensitas cahaya matahari dan temperatur permukaan panel surya itu sendiri. Penelitian ini mencoba mengatasi masalah temperatur tersebut dengan membuat sistem pendingin yang dirangkai pada bagian bawah panel surya. Tujuan penelitian yang ingin dicapai adalah untuk mendapatkan daya keluaran dan efisiensi sistem fotovoltaik yang maksimal dengan memasang sistem pendingin. Sistem fotovoltaik diekspos ke arah utara sepanjang hari. Sistem fotovoltaik tanpa menggunakan sistem pendingin dan yang menggunakan sistem pendingin dioperasikan dengan waktu pengukuran parameter yang sama. Parameter yang diukur adalah intensitas cahaya, kecepatan angin, debit air, temperatur lingkungan, temperatur panel surya, temperatur pendingin, tegangan listrik dan arus listrik. Hasil dari penelitian menunjukkan bahwa daya keluaran (P_out) tanpa sistem pendingin sebesar 44,439 watt dan daya keluaran (P_out) dengan sistem pendingin sebesar 49,181 watt. Efisiensi sel surya tanpa sistem pendingin sebesar 13,541% dan sel surya dengan sistem pendingin sebesar 14,162%. . Hal ini menunjukkan bahwa sistem pendingin dapat meningkatkan kinerja sel surya. One of the applications of renewable energy that utilizes solar energy is solar panels or photovoltaic systems. The performance of the photovoltaic system is influenced by the amount of sunlight intensity and the surface temperature of the solar panel itself. This research tries to solve the temperature problem by making a cooling system that is strung at the bottom of the solar panel. The research objectives to be achieved are to obtain the maximum output power and efficiency of the photovoltaic system by installing a cooling system. The photovoltaic system is exposed north throughout the day. Photovoltaic systems without the use of cooling systems and those using a cooling system are operated with the same parameter measurement time. The parameters measured are light intensity, wind speed, water discharge, environmental temperature, solar panel temperature, cooling temperature, electric voltage and electric current. The results of the research show that the output power (P_out) without a cooling system of 44.439 watts and an output power (P_out) with a cooling system of 49.181 watts. The efficiency of solar cells without a cooling system was 13,541% and a solar cell with a cooling system was 14,162%. . This shows that the cooling system can improve the performance of solar cells.
PENDAMPINGAN PENANGANAN POLUSI UDARA DENGAN INOVASI TAMAN VERTIKAL DAN TEKNOLOGI TERBARUKAN MENGGUNAKAN SOLAR SPRINKLE DI SMP WIDYA MANGGALA JAKARTA TIMUR Sukmawati, Wati; Amirullah, Gufron; Rifky, Rifky
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 7, No 10 (2024): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v7i10.3966-3976

Abstract

Penelitian ini mengkaji penerapan taman vertikal dan teknologi penyiraman otomatis berbasis energi surya (Solar Sprinkle) di SMP Widya Manggala, Jakarta Timur, untuk meningkatkan kualitas udara dan pemahaman siswa tentang energi terbarukan. Dengan lokasi sekolah yang dekat dengan Terminal Kampung Rambutan dan Pasar Induk Kramat Jati, kualitas udara di lingkungan sekolah terpengaruh oleh polusi. Program ini melibatkan pembuatan taman vertikal di area terbatas dan pemasangan teknologi penyiraman otomatis untuk meningkatkan ruang hijau serta efisiensi pemeliharaan. Hasil evaluasi menunjukkan peningkatan signifikan dalam kualitas udara di sekitar sekolah dan kesadaran lingkungan siswa. Sebelum program, 30% siswa memahami konsep energi terbarukan dengan baik, meningkat menjadi 95% setelah pendampingan. Kesuksesan ini menunjukkan bahwa integrasi teknologi ramah lingkungan tidak hanya memperbaiki kondisi fisik lingkungan tetapi juga meningkatkan pengetahuan siswa. Program ini juga berkontribusi pada upaya penghijauan di Jakarta dan dapat dijadikan model bagi sekolah lain yang menghadapi tantangan serupa. Keberhasilan program ini menggarisbawahi pentingnya kolaborasi antara institusi pendidikan dan inovasi teknologi dalam menciptakan lingkungan belajar yang sehat dan berkelanjutan.
Video Editing Training Utilizing Capcut Application at SMKM 7 East Tebet: Pelatihan Editing Video Menggunakan Aplikasi Capcut di SMKM 7 Tebet Timur Oktarina Heriyani; Faldy Irwiensyah; Rifky; Dan Mugisidi; M. Mujirudin
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 6 (2024): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v8i6.19300

Abstract

The significance of video editing skills in conveying messages in the digital era has prompted the implementation of a training program at SMKM 7 Tebet Timur, focusing on the utilization of the CapCut application. This topic was selected to address the challenge of insufficient understanding and skills among students in applying video editing techniques, aligning with contemporary demands in visual communication. The training method encompassed material preparation, theoretical presentation, demonstration, hands-on practice, evaluation, and discussion. The evaluation revealed a notable improvement in the students' understanding and skills post-training, with average scores experiencing significant increments. The conclusion underscores the importance of a holistic approach in multimedia training and recommends further collaboration with higher education institutions. The training outcomes also fostered positive relations between SMKM 7 Tebet Timur and FTII UHAMKA. This training makes a tangible contribution to preparing students to meet the demands of an increasingly visually connected professional world.
Pengaruh Kapasitas Panel Surya dan Intensitas Cahaya Matahari terhadap Kinerja Generator Hidrogen Kering dalam Produksi Gas Hidrogen Rezha Apriansyah; Rifky; Tasyrik Al Qaida; Dicky Wyldan Putra Permana; Saddam Firly Mustarisiam
Prosiding Seminar Nasional Teknoka Vol 10 (2025): Proceeding of TEKNOKA National Seminar - 10
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

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Abstract

Hydrogen gas can be obtained from a hydrogen generator generated by solar panels. This study aims to obtain the performance of an integrated solar panel system with a dry hydrogen generator (GHK) in producing hydrogen gas. GHK has a design with an arrangement of HSS 316L type steel plates coated with rubber gaskets. The research methodology used is experimental, starting with the design of the GHK electrolysis system using two solar panels with a capacity of 50 Wp and 100 Wp as electrical energy suppliers. The test was carried out in an open area using sunlight. The input data measured included sunlight intensity, air humidity, air temperature, wind speed, and solar panel surface temperature. The output data measured included electrical voltage, electrical current, hydrogen gas discharge, oxygen gas discharge, electrolysis process temperature, and weather conditions. The results showed that the system with a 100 Wp solar panel produced a larger volume of hydrogen and had a higher efficiency of energy conversion than the 50 Wp panel.
Review pada Pengaruh Sudut Kemiringan Atap terhadap Keluaran Energi Piezoelektrik pada Eksperimen Konversi Energi dari Tetesan Air Hujan menjadi Energi Listrik Pandu Kusuma Pangestu; Rifky; Muhammad Fahmi Nurhidayat; Kurnia Sandi Oktaris; Reyhan Martin Firnanda; M. Rafi Cahya Firdaus
Prosiding Seminar Nasional Teknoka Vol 10 (2025): Proceeding of TEKNOKA National Seminar - 10
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

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Abstract

This review was conducted to examine the effect of variations in roof slope angles on the amount of piezoelectric energy generated from the impact of artificial rainwater. The study utilized a miniature roof model with four different slope angles: 15°, 30°, and 45°. Piezoelectric sensors were placed on the underside of the roof surface, which was made of polycarbonate material. Rain simulation was performed using a demonstration device with a constant water discharge rate and controlled droplet size. The voltage and electric current produced at each slope variation were measured using a multimeter. Each experiment was repeated three times to ensure the validity and consistency of the results. The collected data were analyzed to determine the relationship between the roof slope angle and the electrical output by presenting voltage and current graphs against the slope angle and calculating the energy conversion efficiency. The results showed that variations in the roof slope angle affected the generated piezoelectric energy, and an optimum angle was identified that produced the highest voltage and current.
Review Studi Konfigurasi Rangkaian Piezoelektrik (Seri vs Paralel) dalam Pemanenan Energi Hujan Reyhan Martin Firnanda; Rifky
Prosiding Seminar Nasional Teknoka Vol 10 (2025): Proceeding of TEKNOKA National Seminar - 10
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

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Abstract

This study aims to examine the effect of series and parallel piezoelectric circuit configurations on the system's ability to deliver greater current and better power stability. The objective of the study is to obtain greater electrical power from series and parallel circuits. This research method is carried out by comparing series and parallel circuits on a number of piezoelectrics that will produce voltage and electric current. Data processing will obtain electrical power and the efficiency of the mechanical energy conversion system into electricity, in this case the piezoelectric. The results found that the type of piezoelectric circuit affects electrical power and efficiency. This shows that the use of piezoelectrics as an energy harvesting device can be an alternative solution for producing small-scale, environmentally friendly electrical energy.
Review Pengaruh Jenis Material Atap terhadap Efisiensi Pemanenan Energi dengan Piezoelektrik sebagai Konverter Energi Mekanik menjadi Energi Listrik Muhammad Fahmi Nurhidayat; Rifky; Kurnia Sandi Oktaris; Pandu Kusuma Pangestu; Reyhan Martin Firnanda; M. Ravi Cahya Firdaus
Prosiding Seminar Nasional Teknoka Vol 10 (2025): Proceeding of TEKNOKA National Seminar - 10
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/teknoka.v10i1.22505

Abstract

This research discusses the design of a piezoelectric raindrop energy harvesting system integrated into a building's roof surface. The primary objective of the research is to convert the kinetic energy of raindrops into electrical energy by utilizing the piezoelectric effect, while simultaneously designing efficient material and structural configurations that are resistant to dynamic loads. The methodology used refers to the VDI 2221 systematic engineering approach, encompassing requirements identification, concept design, material selection, numerical simulation, and prototype fabrication and testing. The piezoelectric materials used are PVDF and PZT, installed under a polycarbonate roof layer with a rectifier system and energy storage capacitors. Test results show that the system is capable of generating voltage and electrical power proportional to rainfall intensity, with maximum voltage distribution occurring in the central area of the piezoelectric plate. This research demonstrates the potential of utilizing raindrop energy as a renewable energy source and supports innovation in environmentally friendly smart roof designs.
Co-Authors Aby Elsa Putra Acep Saputra Ade Irza Fahrezi Adittia Fajar Agus Fikri Agus Fikri Agus Fikri Agus Fikri Agus Fikri Akhmad Rizal Dzikrillah Amirullah, Gufron Andika Prasetya Ar Rasyid, Arif Fikry Arif Widodo Ario Kilat Buono Avorizano, Arry Buono, Ario Kilat Cahyani, Regita Septia Cahyono, Fajar Nur Curatman, Aang Dan Mugisidi Delvis Agusman Delvis Agusman Delvis Agusman Dicky Wyldan Putra Permana Dimas Priyuko Tri Asmoro Dimas Priyuko Tri Asmoro, Dimas Priyuko Tri Asmoro Efendi, M Shofriyan Faldy Irwiensyah Fauzi, Herman Febriansyah, Fikri Fikri, Agus Fikri, Agus Gusto Arif Tansah Hafizh Raihan Hamzah, Arif Herliani Igi Putra Moran Purba imam sobirin, muhammad Irfansyah, Putra Kurnia Sandi Oktaris Lumowa, Sonja V.T M Yusuf D M. Imam Sobirin M. Mujirudin M. Naufal Fadrurrahman M. Rafi Cahya Firdaus M. Ravi Cahya Firdaus M. Shofriyan Efendi Miftah Almunir Mohammad Arfan Muzakkir Mohammad Mujirudin Mohammad Mujirudin Mohammad Mujirudin Mohammad Yusuf Djeli Mohammad Yusuf Djeli Muh Nur Rochim Maksum Muhammad Fahmi Nurhidayat Muhammad Imam Sobirin Muhammad Isya Ramdhany Muharom4, Vazri Muhidal Wasi Mujirudin, Mohammad Mustofa Mustofa Muzakkir, Mohammad Arfan Nazilul Muttaqin Nautica Nofendri, Yos Nur Rohman Nur rohman Oktabiansyah, Tobi Oktarina Heriyani Oktarina Heriyani Pancatatva Hesti Gunawan Pandu Kusuma Pangestu Perdana, Ana Wahyu Putra, Aby Elsa Regita Septia Cahyani Reyhan Martin Firnanda Reza Ferizal Akbar Rezha Apriansyah Riyan Ariyansah Saddam Firly Mustarisiam Saputra, Ferdyan Arif Mawanda Sepannur Bandri Setiawan , Eki Hadi Sri Purwati, Sri Sri Wahyuni Tasyrik Al Qaida Thoriq Muhammad Nur Zain Vazri Muharom Wahyu Kuncoro Wasi, Muhidal Wati Sukmawati Wijaya, Victor Indra Zuriman Anthony