University of Huelva posted this:New power generation electric systemThe proposed system is characterized by the following aspects which make it unique: 1- The system is built from a number of PEM fuel cells, supplied by al least one hydrogen source. Each module include a monitoring and control subsystem, so it is possible to activate/deactivate module induividually. 2- Each module can supply a different power value. 3- The monitoring and control subsystem receives electrical signal from each modules like stack voltage, stack current and cell voltage. 4- The monitoring and control system has two levels: the first level aims to control each module (local control) and the second level is responsible for coordinate local controller. 5- The monitoring and control system is on-line accessible. 6- The control and monitoring system distributes homogeneously the operating hours between the modules when the power demand is lower than the maximum power. 7- Each module has a oxygenation/cooling subsystem which supplies oxygen to cathide and air for refrigerate the stack. 8- Each module has a hydrogen subsystem wich is the responsible for hydrogen delivery to stack at ambient pressure. 9- The hydrogen subsystem include a hydrogen purge line. 10- The Electric Power Generation System includes a simulator to reproduce the performance ogf the whole subsystem.
UATEC - Unidade de Transferência de Tecnologia posted this:Planar diamond thermistors for harsh environments: applied to temperature measurements in combustion and jet engines for the automobile and aerospace industry, lasers, fuel cells and in biological and aggressive chemical environmentsThe new diamond thermistors can be used for temperature measurements in harsh environments such as aggressive chemicals at high temperature or in biological media due to their inertness. Furthermore, the sintered ceramic substrate guarantees superior adhesion and resistance to fracture under high mechanical loads. The fabricated temperature sensitive diamond surface comprises well adhered ohmic contacts deposited on the backside of the dielectric ceramic substrate. This configuration prevents interaction between the temperature sensitive surface and the surrounding environment which is essential for biochemical devices applications. Furthermore, the planar geometry of the disclosed thermistor maximizes the contact region between the temperature sensitive surface and any solid flat surface on which it is placed. In this way, improved response times are obtained comparing to traditional round shaped thermistors.
Air Products posted this:Hydrogen Storage Liquid has 3X the Energy Density of Lithium Ion BatteriesThis product delivers hydrogen with an extra degree of safety directly to fuel-cells on-demand. New designs are enabled since this "Liquid-Carrier for Hydrogen" is stored in tanks of any shape. The economics of this system have been validated by DOE and is among the least expensive methods of high-volume hydrogen storage. When loaded with hydrogen from renewable sources this technology delivers a complete green solution since the carbon portions of the molecules are completely re-used. With a well-to-wheels efficiency comparable to gasoline or EVs, this technology can deliver world-class efficiency.
Technology Transfer Office