Water energy can be used as a power plant by utilizing the available potential (waterfall and flow velocity). Today's needs are increasing along with increase in population growth. Kaplan turbine is composed of propellers/turbine wheel blades such ship propellers. The blades' length width determine turbine's outer diameter. diameter will influence torque generated turbine. greater produced, obt...

this study was conducted to study the effect of organic acids on the preservation of alfalfa nutritional value after harvesting. a split plot design with 4 treatments and 3 times was conducted in which organic acids were sprayed on the 30percent moisture content forage before baling. treatments were: 1) forage without additives as control, 2) pure propionic acid, 1percent, 3) acetic acid percen...

A cost structure is proposed for evaluating and improving the ecological-economic efficiency of baling sub-scheme units within solid waste management schemes that end with, for example, incineration for heat and power production. The methodology proposed employs the previously introduced WAste Managements’ Efficient Decision model (WAMED) and the COmpany STatistical BUSiness Tool for Environmen...

Pertumbuhan penduduk yang sangat cepat menyebabkan terjadinya peningkatan akan kebutuhan energi berupa bahan bakar. Bioetanol gel merupakan salah satu bakar alternatif berpotensi untuk dikembangkan. Dalam merancang pabrik bietanol gel, terdapat beberapa aspek penting diantaranya adalah perhitungan kapasitas produksi dan pertimbangan terhadap berbagai jenis proses pembuatan bioetanol agar didapa...

Pemeliharaan kapal merupakan suatu keharusan yang harus dilaksanakan. Diantara pemeliharaan adalah pencegahan korosi. Korosi tidak dapat dihilangkan, melainkan hanya diturunkan tingkat keganasannya. Pencegahan korosi ada dua macam yaitu secara pasif dan aktif. umum dilakukan dengan cara pengecatan, sedangkan aktif pemasangan Zinc Anoda Protection (ZAP). Kebutuhan ZAP pada tergantung dari luas p...

A simulation model, which depicts the harvesting operation of biomass supply chain, is presented in this paper. ExtendSim8 simulation software was used for the development of the model. There are a number of sequential operations, i.e. mowing, drying, baling, picking-up, loading, and transporting, for harvesting biomass until the final product arrives at bio-energy generation plant. Different s...

Semakin menipisnya potensi energi tak terbarukan dan bahaya akan pemanasan global mengakibatkan harus ada upaya untuk memperoleh baru yang ramah lingkungan salah satunya adalah dengan memanfaatkan kecepatan angin. Potensi belum banyak dimanfaatkan di Indonesia yaitu angin rendah 2 m/s hingga 6 m/s. Oleh karena itu diperlukan suatu cara agar dapat tersebut. Dari latar belakang permasalahan maka ...