Lampu adalah alat penerangan yang sangat penting dalam kehidupan. Tingginya kebutuhan manusia akan penerangan lingkungan merupakan aspek yang sangat penting dalam menjalankan aktifitas sehari hari, kepentingan studi dan pekerjaan menuntut manusia untuk tidak pulang ke rumah dengan kesibukan masing-masing yang dapat mengakibatkan lingkungan rumah akan terlihat gelap dikarenakanpenerangan yang tidak aktif. Seiring perkembangannya, terdapat tuntutan penambahan fungsi dari lampu rumah yang ada. Berdasarkan latar belakang tersebut, maka dalam penelitian kali ini peneliti akan membuat produk dari pengembangan lampu rumah yang sudah ada dengan penambahan fungsi sesuai requirement dari penggunanya. Untuk mewujudkan tujuan itu digunakan Metode Quality Function Deployment (QFD) untuk menganalisis suara konsumen tentang lampu rumah dan keinginan dari konsumen. Hasil penelitian ini adalah produk lampu fathlamp yaitu lampu rumah yang berbasis mikrokontroler arduino. Untuk pengolahnnya digunakan mikrokontroler ESP8266 sedangkan untukoutputnya berupa lampu rumah led 15 watt. Penambahan fungsi pada lampu rumah fathlamp yang dibuat ini adalah dapat menggunakan smartphone android sebagai sakelar lampu yang dihubungkan menggunakan jaringan wifi. Kehadiran lampu fathlamp ini merupakan salah satu terobosan baru dalam upaya memberikan alternatif penggunaan alat penerangan yang hemat energi dan memudahkan pengguna dalam mengontrol lampu rumah pada jarak jauh.
Many studies have had been done relating to the Bunsen burner. However there are only a handful of studies which focus on the implementation of a foreign component integrated to a Bunsen burner. Therefore, the effect of such component to the Bunsen burner still need to be investigated further. The study proposes a further analysis on the effects of a ring, primarily its temperature, on the Bunsen burner to the flame characteristic of methane gas. Flame’s temperature, flame’s height, and laminar flame speed are the 3 key properties observed. The study is done using a computer based numerical simulation software Ansys, implementing a 2D Fluent steady state analysis. The variations are the value of the ring’s temperature, which are 400 K, 600 K, and 800 K. The result of the study suggests that for the same equivalence ratio value, the higher the temperature of the ring attached to the burner, resulting in a higher flame’s temperature and laminar flame speed value. Proven by the fact that the 800 K temperature variation has the highest value of both flame’s temperature and laminar flame speed for the same value in equivalence ratio compared to all of the variations. However, a higher ring’s temperature value resulting in a lower or reduced flame’s height formed for the same equivalence ratio. Also proven by the fact that the 800 K temperature variation also has the lowest flame’s height value compared to all the variations at any given equivalence ratios.
Surface active agent (surfactant) is a substance or a blend of substances that lower the surface tension or interfacial tension between two liquids. It contains both hydrophobic groups (its tail) and hydrophilic groups (its head). Surfactants lower the surface tension of a liquid by spreading spontaneously over its surface. To understand its suitability for raw material of surfactant, the seed of Morinda citrifolia L is extracted for its fatty acid contents and evaluated for its spreading ability into other liquid. Its fatty acid contents are analyzed by FTIR and GCMS method and its spreading ability is evaluated by its diffusion characteristic using Helle Shaw Cell. From FTIR it is known that the oil seed of Morinda citrifolia has functional groups suitable for the hydrophobic part of surfactant. From GCMS it is known that the seed of Morinda citrifolia L contains huge amount of poly unsaturated fatty acid (PUFA) of C19:2 suitable for the hydrophobic part of surfactant. From diffusion experiment using Hele Shaw Cell it is known that the spreading ability of its PUFA in oil phase is approaching its commercial synthetic surfactant has but it is not in water phase.
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