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KAJI EKSPERIMEN MASSA REFERIGERANT TERHADAP OPTIMALISASI FUNGSI AC PADA KENDARAAN INOVA DIESEL 2008 Nike Nur Farida; Wachid Yahya; Khaeratul Mukarramah
Jurnal Energi dan Teknologi Manufaktur Vol 4 No 02 (2021)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v4i02.104

Abstract

One of the functions of the vehicle air conditioner is to provide thermal comfort in the cabin space. Thermal Comfort can provide benefits such as reducing driver fatigue and increasing driving efficiency and safety, so it is important that the temperature of the vehicle is in accordance with human thermal comfort (22.8-26oC). The purpose of this study was to see how much volume and pressure the car air conditioner had in order to get optimal thermal comfort by varying the volume of the refrigerant in the air conditioner and recording the pressure, temperature in the condenser, evaporator and cabin space. The test equipment in this study was a 2008 Toyota Innova Diesel with refrigerant R 134a with a volume variation of 600 grams, 700 grams, 800 grams, 900 grams, 1000 grams and 1,100 grams. The results showed that the more refrigerant volume will make the low pressure and high pressure in the AC system rise. Optimal low pressure (1.5 bar) and optimal high pressure (15.1 bar) were obtained at a refrigerant volume of 700 grams. The relationship between the refrigerant mass and the temperature in the evaporator line has a tendency if the volume of refrigerant plus the temperature in the evaporator line and the cabin will decrease to a certain point the temperature will tend to rise. The pattern which includes the addition of refrigerant mass will reach the optimum cabin temperature (achieve thermal comfort), and then decrease (the temperature will increase). The lowest temperature achieved in the cabin (24.6oC) was at a refrigerant volume of 700 ml.
PEMANFAATAN ENERGI SURYA SEBAGAI ENERGI ALTERNATIF DAN PENINGKATAN MEDIA PEMBELAJARAN IPA DI SD NEGERI BARENG 3 KOTA MALANG Agus Setiawan; Sugeng Hadi Susilo; Yuniarto Agus Winoko; Elka Faizal; Nike Nur Farida; Sarjiyana Sarjiyana
Conference on Innovation and Application of Science and Technology (CIASTECH) CIASTECH 2022 Transisi Global dalam Mencapai SDGs 2030
Publisher : Universitas Widyagama Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Dalam pembelajaran di bidang Ilmu Pengetahuan Alam (IPA) pada kelas 4, 5, dan 6 SD tertulis tentang kompetensi dasar yaitu menunjukkan perilaku ilmiah. Beberapa permasalahan untuk mewujudkan perilaku ilmiah dalam pembelajaran IPA yaitu terbatasnya alat peraga praktikum di sekolah mitra. Disamping itu pengetahuan guru tentang pemanfaatan energi matahari masih kurang serta belum tersedianya trainer/alat peraga pembelajaran sel surya beserta modul praktikumnya yang sesuai dengan siswa Sekolah Dasar. Tujuan dari pengabdian ini adalah menyediakan alat peraga dengan sentuhan teknologi terkini sehingga dapat meningkatkan kapasitas pembelajaran siswa khususnya tentang pemanfaatan energi matahari menggunakan sel surya. Metode pelaksanaan pengabdian meliputi: (a) Survey lapangan di lokasi SD Negeri Bareng 3 Kota Malang, (b) Pembuatan Prototype Trainer Pembangkit Listrik Tenaga Surya (PLTS), (c) Pelatihan dan supervise kepada guru pengampu pelajaran IPA kelas 4, 5, dan 6 SD Negeri Bareng 3 Kota Malang. Hasil yang diperoleh dari kegiatan pengabdian adalah (a) Pengadaan Prototipe Trainer Pembangkit Listrik Tenaga Surya (PLTS) 500 Watt AC, (b) Peningkatan pengetahuan guru pengampu pelajaran IPA kelas 4, 5, dan 6 tentang pemanfaatan energi matahari dengan mengunakan sel surya serta pengoperasian PLTS, (c) Pengoperasian Pembangkit Listrik Tenaga Surya (PLTS) 500 Watt AC sebagai pemasok daya penerangan halaman Sekolah SD Negeri Bareng 3 Kota Malang di malam hari.
Impact of Injection Duration and Injection Timing Variations on Torque and Power Output of the Ken Arok Urban Car Utilizing E100 Ethanol Nike Nur Farida; Muhammad Rafi Akbar Yudhistira; Nicko Nur Rakhmaddian
Jurnal Teknik Mesin (Sinta 3) Vol. 21 No. 2 (2024): OCTOBER 2024 (SINTA 3)
Publisher : Institute of Research and Community Outreach, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jtm.21.2.43-50

Abstract

State Polytechnic of Malang (Polinema) actively participated in the energy-efficient car competition. The Polinema team has developed an energy-efficient car called Ken Arok, which competes in the urban ethanol class (Internal Combustion Engine) concept. This class emphasizes using internal combustion engines as the driving force and ethanol as the fuel. Ken Arok won fifth place in the competition due to obstacles in the programmed ECU program, especially in the injection duration. This study examines the effect of the interaction between injection duration and injection time variations on the torque and power output of the Ken Arok urban car fueled by E100 ethanol. An experimental approach was used in this study. A modified motor, converted into an energy-efficient urban car, was tested. The injection duration mapping was varied in multiples of 2 ms, with values ​​ranging from 2 ms less than the standard to 2 ms more than the standard. Likewise, the injection time was varied in multiples of 2 degrees, including 2 degrees less than the standard and 2 degrees more than the standard. The dyno tester measured the torque and power generated under these conditions. The main objective of this study was to identify the optimal torque and power settings for the Ken Arok energy-efficient engine. The highest torque value recorded was 10.13 N.m, achieved at 6000 rpm when using an injection duration of 2 ms more than the standard (9.06 ms) and an injection timing advanced by 2 degrees (3580). The peak power output reached 8.7 HP at 6000 rpm under compression injection duration plus 2 ms (9.06 ms), and when the injection was advanced by 20 (3580).
Effect of Engine Rotation on Mechanical Water Pump and Microcontroller-Based Electric Water Pump for Liquid-Cooled Motor Engine on Coolant Temperature Nike Nur Farida; Muhammad Sidqi Rozin Rabbani; Nicko Nur R
Jurnal Teknik Mesin (Sinta 3) Vol. 22 No. 1 (2025): APRIL 2025 (SINTA 3)
Publisher : Institute of Research and Community Outreach, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jtm.22.1.1-9

Abstract

A liquid-cooled motor's cooling system is essential in maintaining engine performance. This study compares mechanical and electric water pumps based on microcontrollers to improve cooling efficiency. This study aims to measure the influence of the two types of pumps on engine temperature. This study uses an experimental method, installing the two types on machines with liquid cooling systems. In this study, thermostat components are also used. Measurements are made on the temperature of the coolant at various engine revolutions (RPM). The results showed that the electric water pump significantly affected the temperature of the coolant. At the coolant temperature, the electric water pump with thermostat obtains the highest coolant temperature at 4500 RPM engine speed of 80.6°C, while the mechanical water pump is 84.25°C.  In the thermostat-less test, the electric water pump obtained the highest temperature and coolant discharge of 62.75°C, while the mechanical water pump achieved a temperature of 64.88°C.