ARTICLES Permintaan Bahan Bakar Permintaan BBM meningkat terus karena pertambahan penduduk dan lajunya kemajuan teknologi semua sektor. Selain itu, permintaan industri kimia dunia melaju secara eksponensial yang luar biasa tinggi percepatannya. Demikian juga permintaan untuk industri reforming untuk pembuatan Hidrogen. Sementara itu, minyak fosil semakin habis dan jenis bahan bakar ini tergolong tidak terbarukan. Dengan hukum [...]

Professor Channing Robertson of the Stanford University Chemical Engineering department gives an introductory lecture, outline, and background for the course.Introduction to Chemical Engineering (E20) is an introductory course offered by the Stanford University Engineering Department. It provides a basic overview of the chemical engineering field today and delves into the applications of chemical engineering.Stanford Chemical [...]

In general, the physical and chemical properties and the performance of ethyl esters are comparable to those of the methyl esters. Methyl and ethyl esters have almost the same heat content. The viscosities of the ethyl esters are slightly higher, and the cloud and pour points are slightly lower, than those of the methyl esters. Engine tests demonstrated that methyl esters produced slightly higher power and torque than ethyl esters. [...]

Fuel CellsAuthor: David TanguayFuel cells are simple devices, containing no moving parts and only four functional component elements: cathode, electrolyte, anode and interconnect. Fuel cells are actually being used more widely than many people think.Fuel cells are electrochemical devices similar to batteries that directly convert chemical energy of a fuel into electrical energy and heat. They are {readmore}different from batteries [...]