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<![CDATA[PENGARUH KECEPATAN PUTARAN BLOWER EVAPORATOR TERHADAP KINERJA AC MOBIL ]]>
<![CDATA[Wardika Wardika]]>;
<![CDATA[Sunanto Sunanto]]>;
<![CDATA[Ferry Sugara]]>;
<![CDATA[Yusha Tri Mulya]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 4, No 2 (2018): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v4i2.138
<![CDATA[The air distribution system in the room has the task of flowing cold or hot air into the room, a comfortable room condition is at a temperature of 24˚C. This study aims to determine the effect of the speed of the blower rotation on the performance of the car's AC. The cooling system in the vehicle, uses a blower to distribute cold air produced by the evaporator. Many choices of speed blowers to distribute cold air. In this study using variations in the speed value of blowers. Blower speed greatly affects the room / cabin temperature. Avoiding excessive energy consumption or inefficient energy consumption is indicated by a decrease in the COP from a cooling machine. After research obtained efficiency data for low blower rotation speed of 73.36%, medium rotation of 72.86%, and high rotation of 72.83%. But the fastest cooling of the cabin uses a high speed blower rotation. Keywords: Performance, Car AC, Speed Blower, Temperature]]>
<![CDATA[Pengembangan Pengujian Crashworthiness dengan Simulasi Numerik Menggunakan Model Impact Transferability ]]>
<![CDATA[Felix Dionisius]]>;
<![CDATA[Jos Istiyanto]]>;
<![CDATA[Suliono Suliono]]>;
<![CDATA[Yusup Nur Rohmat]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 3, No 1 (2017): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v3i1.4
<![CDATA[Collision test is needed in transportation area in order to anticipate injuries of passangers when the accident occurred. Therefore, this test must be done for achieving standar requirements which is known by crashworthiness. This paper discussed about development of crasworthiness test by using modelling impact transferability by numerical simulation. The goal is to know the error of maximum deformation when given axial dynamic loading between numerical simulation and real experiment. Furthermore, analitic was used to validate duration of stress wave propagation from result of numerical simulation. This simulation used explicit finite element method by using PAM-Crash. The component of this research was impactor and impact of transferability with 80 and 27 kg of mass. The square tube-thin walled structure with holes as crush initator 3 mm of diameter was used as specimen. The result shows maximum deformation and duration of stress propagation error which are 3.90 % and 14.89 %. ]]>
<![CDATA[UJI VISUAL THERMOGRAPHY PADA OSCILLATING HEAT PIPE ]]>
<![CDATA[Ida Bagus Putu Sukadana]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 5, No 1 (2019): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v5i1.163
<![CDATA[Oscillating Heat Pipes one of the new family of heat pipe is two-phase heat transfer technologies with excellent performance capabilities, simple structure and low production costs. As one of the non-intrusive method in temperature measurement, thermography observation in OHP still very rarely to use although the result was able to explain the relation between temperature oscillation and fluidic motion of fluid. Furthermore this paper aims to study the behavior of thermal profile with the thermography observation. Water with filing ratio (45%) has been chosen as the working fluid for the close loop OHP. The heating power was varying into the evaporator section of OHP from 12 until 142 Watt. It was found that thermography observation very useful tools to define internal flow pattern inside OHP channel. Intermittent oscillation, circulation and dry-out phenomenon was captured more better than conventional temperature measurement. The lowest thermal resistance was found 0.234 °C/W corresponding with 3210 Watt/mK effective thermal conductivity at heat input 142 Watt.]]>
<![CDATA[Rancang Bangun Sistem Pengendalian Biogas Bertekanan pada Biogas Storage Tank System Hasil Purifikasi dengan Metode Water Scrubber System ]]>
<![CDATA[Arief Abdurrakhman]]>;
<![CDATA[Anis Wahyumulyaning Tiyas]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v2i2.13
<![CDATA[Biogas is a renewable energy potential to be developed in Indonesia. It is based on the increase in the number of household-scale biogas reactor. But the number of biogas reactors currently installed is still not equipped with biogas purification system integrated with the biogas storage tank system. Storage of purified biogas on the tube is required to extend the range of the use of biogas in some areas that have been using biogas as an alternative energy source. Storage tank systems require control systems in a storage tube that could biogas storage mechanism accordance with the maximum capacity of the tube used. This system uses a sensor components MPX5700AP and Arduino microcontroller, LCD display to display pressure readings, and solenoid valve as an actuator. The working principle of this pressure control system that is used to read the sensor value changes of pressure in the biogas storage tank A and B to be sent to the Arduino and a subsequently processed data accordance specified set point. Charging conducted alternately pressurized biogas through a method ON / OFF Valve Selenoid 1,2,3 and 4 on each biogas storage tanks. At the testing that was done we got the result response of pressure control system against time on pressure sensors P2 and P3 value rise time (tr) = 15 s, settling time (ts) = 12 s, whereas for pressure sensors P3 obtained values rise time ( tr) = 14 s, settling time (ts) = 12 s. The test results are static characteristics sensor hysteresis error of 0.00078% and 0.90%.]]>
<![CDATA[PROTOTYPE PENGONTROLAN PINTU OTOMATIS MENGGUNAKAN ARDUINO BERBASIS ANDROID ]]>
<![CDATA[Muhira Dzar Faraby]]>;
<![CDATA[Ishak Ishak]]>;
<![CDATA[Rukiah Rukiah]]>;
<![CDATA[Setiawan Setiawan]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v2i2.17
<![CDATA[Effective and efficient is a way to facilitate the public in conducting activities, for example in terms of opening doors that are large, requires a lot of time and energy. Using Arduino, Android and PIR sensors are designed to make a protoype controlling automatic doors are controlled via Android via Bluetooth HC - 06 and can work automatically with the response detected by the PIR sensor. PIR sensors and Arduino serves as an input and as an output stepper motors to open and close the door. The working principle of this automatic door is in an android installed a software to control a door that has two modes. If the manual mode is activated, the door opens only when controlled using Android, when the automatic mode is activated the door will open when the sensor has detected the temperature of the human body that moves the door will open. The maximum distance control door is 1-50 meters in open space , but in a closed space that is controlling the maximum distance of 45 meters.]]>
<![CDATA[PENERAPAN DIZCRETIZE BY FREQUENCY DALAM MENINGKATKAN AKURASI ALGORITMA C4.5 DALAM MEMPREDIKSI CUACA PADA JALUR PANTURA TEGAL-PEKALONGAN-SEMARANG ]]>
<![CDATA[Kurnia Adi Cahyanto]]>;
<![CDATA[Fachrul Pralienka Bani Muhamad]]>;
<![CDATA[Esti Mulyani]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 5, No 2 (2019): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v5i2.195
<![CDATA[Cuaca merupakan suatu hal yang sangat vital dalam kehidupan manusia sehari-hari. Hampir seluruh aktifitas yang dilakukan manusia di dunia ini tidak dapat lepas dari keadaan cuaca yang berlangsung. Oleh karena itu, pengamatan cuaca di sini sangatlah diperlukan untuk melakukan prediksi tentang cuaca. Jalur pantura adalah salah satu jalur yang sangat penting bagi pulau Jawa, khususnya jalur pantura Tegal-Pekalongan-Semarang, sehingga dibutuhkan semacam prediksi cuaca untuk mengetahui intensitas hujan di jalur ini. Algoritma C4.5 yang selama ini banyak digunakan untuk melakukan klasifikasi sekaligus prediksi terbukti relatif akurat dalam melakukan proses prediksi ini. Namun, di lain sisi dengan berkembangnya ilmu pengetahuan teknologi komputasi, maka nilai akurasi ini masih dapat ditingkatkan, salah satunya dengan menggunakan discretize by frequency dalam langkah preprocessing data. Hasil akurasi menunjukkan, bahwa sebelum dilakukan discretize by frequency dalam langkah preprocessing data nilai akurasi C4.5 adalah 72,99% dan setelah dilakukan discretize by frequency dalam langkah preprocessing data nilai akurasi C4.5 meningkat menjadi 86,13%.]]>
<![CDATA[Optimasi UV-Photolithography Aligner dan Photomask Menggunakan Produk Komersial untuk Microfabrication ]]>
<![CDATA[Delffika Canra]]>;
<![CDATA[Dedi Suwandi]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 2, No 1 (2016): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v2i1.22
<![CDATA[The high price of a UV-photolithography aligner on the market is the reason for designing and characterize low cost UV-photolithography aligner. Photolithography process is simple but it needs patience, enable to modify photolithography aligner by using commercial components and certainly low price. The objective of this study is analyzing the ability of a commercial product in UV-photolithography process, search optimum exposure time and resolution. The method of photolithography process to be used is the method of contact alignment. Commercial UV lamps and cheap photomask are main component in this study. With a light intensity of 0.2 mW/cm2 require the exposure time at least 50 seconds. The smallest achievable resolution depends on the resolution photomask. The Results of smallest resolution is 165 m with a percentage error 10% of the original design.]]>
<![CDATA[EVALUASI PENGGUNAAN MANUAL DAN AUTOMATED SOFTWARE TESTING PADA PELAKSANAAN END-TO-END TESTING ]]>
<![CDATA[Joan Lian Min]]>;
<![CDATA[Adila Istiqomah]]>;
<![CDATA[Ani Rahmani]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 6, No 1 (2020): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v6i1.256
<![CDATA[In software development life cycle, testing is needed to ensure the quality of the software before it is released. Choosing the testing technique depends on the characteristics of the software to be released. Web-based applications, for example, will tend to use end-to-end testing techniques to ensure web pages interact according to requirements. The cycle of software development recently is getting shorter. It is necessary to study to determine the testing implementation techniques (manually or automated) on the right end-to-end testing. The research objective is to look at the characteristics and technical testing of end-to-end testing that can be done in software development, both manually and automatically. The result showed that the number of iterations of end-to-end testing is very influential in the selection of quality techniques used. That can be a basis for determining testing techniques: manual or automatic.]]>
<![CDATA[Studi Eksperimen Konversi LPG Pada Sepeda Motor Berbahan Bakar Bensin ]]>
<![CDATA[Yusup Nur Rohmat]]>
<![CDATA[ Jurnal Teknologi Terapan Vol 1, No 1 (2015): Jurnal Teknologi Terapan ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Indramayu ]]>
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DOI: 10.31884/jtt.v1i1.29
<![CDATA[Tingginya pertumbuhan jumlah kendaraan bermotor serta konsumsi bahan bakar minyak di Indonesia telah menimbulkan masalah terhadap lingkungan dan penyedian bahan bakar ini. Permasalahan ini makin rumit karena [A1]subsidi untuk pengadaannya sangat memberatkan Anggaran Pendapatan dan Belanja Negara. Oleh karena itu harus terus dilakukan upaya komprehensif untuk mencari solusi terbaiknya. Dalam makalah ini dibahas hasil penelitian yang bertujuan untuk mengurangi emisi dan menurunkan konsumsi bahan bakar sepeda motor, dengan mengkonversi penggunaan bahan bakar bensin dengan LPG yang biasa digunakan untuk memasak. Pengujian dilakukan di laboratorium menggunakan dinamometer chassis untuk membandingkan torsi, daya, tingkat konsumsi bahan bakar serta biaya operasi, pada sebuah mesin sepeda motor berkarburator menggunakan bahan bakar bensin dan LPG, baik tanpa pengubahan kondisi pengapian maupun dengan mengubah kondisi pengapian. Dari penelitian ini didapatkan bahwa bahan bakar LPG memiliki unjuk kerja yang baik dan dapat digunakan secara langsung tanpa mengubah kondisi pengapiannya. Akan tetapi kinerjanya akan lebih baik jika kondisi pengapiannya disesuaikan. Tingkat konsumsi terbaik LPG adalah 86 km/kg atau senilai Rp.58/km sedangkan bensin 66 km/l atau Rp.98/km.]]>
