The Engineers Crib

An electrical engineer at The University of Toledo, has developed a new energy storage solution to make battery packs in electric vehicles, satellites, planes and grid stations last longer and cost less. Dr. Ngalula Mubenga, assistant professor of electrical engineering technology at The University of Toledo, in her lab. Credit: Dan Miller, The University of Toledo The new technology called a bilevel equalizer is the first hybrid that combines the high performance of an active equalizer with the low cost of the passive equalizer. "It's a game changer because we solved the weak cell issue in  lithium ion battery  storage for packs with hundreds of cells," said Dr. Ngalula Mubenga, assistant professor of electrical engineering technology at UT. "Whenever we are talking about batteries, we are talking about cells connected in a series. Over time, the battery is not balanced and limited by the weakest cell in the battery." Before the bilevel equalizer, ...

 The Rotameter which is classified as a variable area meter was invented by Karl kueppers in 1908 and ever since its the mostly used VA meters. Rotameter is a device that is used to measure the volumetric flow rate of liquid and gases in a vertically installed glass tube. They provide precise and economical way of indicating flow rate in a fluid system. Rotameter is a gravity-type flowmeter under the VA meters because of the opposition between the downward force of gravity and the upward force of the flowing fluid. The basic components of the flow meter are Tapered glass tube Float  MODE OF OPERATIONS The rotameter consist of three elements for its operations; the glass tube,  the float and a measuring scale. The float rises as a result of upward force from the fluid flow. For gases,  the float rises due to the pressure from the gas while for liquids the float rises as a result of the combination of the pressure from the liquid and its buoyancy to expand ...

MAGMETER Magmeter is an electromagnetic flow measuring instrument that's used for measuring conductive and aqueous fluid,  its a device that produces ideal result. The magmeter rely on a measurement principle that is non intrusive and produces no pressure drop as it moves along the pipe. Its suitable for volumetric fluid flow. The basic principle in which the magmeter obeys is the Faraday's law of electromagnetic induction which states that whenever there's a change in the magnetic line of force(flux) linked with a circuit,  an electromotive force is induced in the circuit. From the stated law,  when the magnetic flux is induced it causes a potential difference that is proportional to the velocity flow and perpendicular to the magnetic flux. The magmeter consist of Electrode Non ferromagnetic flow tube Conductive liner Exciting coil