Abstract:
A turbine (1) for extracting energy from a flowing fluid for conversion into electricity, comprising a first rotor (3) with longitudinally extending blades (6) which is mounted for rotation about a rotor axis (A) extending transversely of the direction of fluid flow, and a second rotor (7) which is also mounted for rotation about the rotor axis. The blades (10) of the second rotor are displaced radially outwardly from the blades of the first rotor so that the blades of the first rotor rotate within the space defined by the blades of the second rotor. The second rotor rotates about the rotor axis in the opposite sense to that of the first rotor. The arrangement may be such that the sense of rotation remains the same irrespective of the direction of fluid flow. One of the rotors may rotate the stator of an electrical generator, whilst the other rotates the rotor of the generator. The turbine is preferably buoyant and is useful in tethered, submerged configurations.
Abstract:
The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
Abstract:
A composition for the generation of chlorine dioxide including at least one non-iodo interhalide, polyhalide or salt thereof having the formula: BrmClnFoXp, wherein m=0-3, n=0-4, o=0-3, p=0-2, X is a cationic moiety and with the provisos that m+n+o cannot be zero; if m+n+p