Korea Institute of Energy Research posted this:Preparation method of palladium alloy composite membrane for hydrogen separation.Researchers at the Korea Institute of Energy Research have developed a new palladium alloy composite membrane for hydrogen separation. Palladium-based membranes have been used for decades in hydrogen extraction because of their high permeability and good surface properties and because palladium, like all metals, is 100% selective for hydrogen transport. Palladium membranes have been used to provide very pure hydrogen for semiconductor manufacture, fuel cells, and laboratory use. Palladium also combines excellent hydrogen transport and discrimination properties with resistance to high temperatures, corrosion, and solvents. Further, palladium is easily formed into tubes that are easily fabricated into hydrogen extraction and palladium surfaces are not readily poisoned by carbon monoxide, steam, and hydrocarbons. This exciting technology relates to an advanced preparation method of palladium alloy composite membrane for hydrogen separation. Generally, a separation membrane used for the preparation of ultra-high pure hydrogen, has low permeability. This possesses a significant challenge to hydrogen separation. Intensive and extensive research on the improvement of the selective permeability of membranes used for hydrogen separation has been, and is presently, being carried out. The commonly used non-porous palladium membrane has high hydrogen selectivity but low permeability. Therefore, despite the selective hydrogen permeability of the separation membrane being intended to be improved by coating the surface of the porous material with a thin palladium membrane, the membrane still suffers due to frequent deformities caused by phases change of the lattice structure during hydrogen absorption. With the goal of preventing such deformations, a palladium alloy separation membrane is primarily used, at present. However, this common method of using a metal alloyed with palladium, also incur limitations. Notably the frequent palladium-copper alloy membrane suffers low hydrogen selectivity and poor adhesion, issues which commonly lead to brakes in the palladium-copper alloy separation membrane. This advanced technology has been designed to overcome the common issues experienced during the application of palladium alloyed membranes for hydrogen separation. An objective of this technology is the provision of an advantageous palladium alloy composite membrane, which requires a small amount of palladium and thus possess high hydrogen selectivity, high durability and enables improvements in properties of the separation membrane, regardless of the kind of support.
Korea Institute of Energy Research posted this:Controller operated variable temperature broadband heat pumpResearchers at the Korea Institute of Energy Research have developed a new method of managing the inherent limitations of heat pumps, in terms of their application for unpredictable heat energy sources. Heat pumps are devices that can produce hot water with a high temperature using a heat source with a low temperature. In general, heat pumps produce hot water with a set temperature and a set flow rate using a heat source that is introduced with both predetermined temperature and flow rate. However, with the increased use of new renewable heat sources, such as geothermal heat, sewage heat and solar heat; there is a need for heat pumps with the capacity to manage heat sources with characteristically unpredictable temperatures and flow rates that are prone to sudden change. What’s more, there is an increasing requirement for heat pumps capable of supplying hot water at varying temperatures, as opposed to one set temperature – to accommodate demand requirements. Conventional heat pumps are limited in their capability to sufficiently align the characteristics of heat sources and the characteristics of the demand source. Generally, demand sources for heat pump energy require both consistent temperatures and flow rates. Meaning that heat sources, such as renewables, which suffer unreliable temperatures and flow rates are generally unsuitable for heat pump use. The innovative broadband heat pump technology presented offers a unique system which can overcome the inherent limitations of heat pump technology. This technology enables the control of heat source temperatures in order that heat supplied is at a uniform temperature and can be tailored to meet the requirements of the demand source. This broadband heat pump technology has several beneficial implications. Notably the pump is capable of being supplied with hot water with various levels of temperature, which can then be supplied to any desired demand source. Additionally, since heat sources with varying levels of temperature, notably including renewable energy sources, can be used, energy availability increases, and the pump offers a gateway for renewable energy use.
Universidad de Alcalá-OTRI posted this:Software system for analysis and heuristic optimization for the design of wind farmsThe “Modern Heuristics of Optimization and Design of Communications Networks” research group, from the University of Alcalá, presents a software environment for the design of wind farms. Focused especially on the use of optimization heuristic algorithms to design the location of wind turbines. The group is looking for companies from the renewable sector to reach cooperation or commercial agreements with technical assistance or joint venture agreements.
BPE e.K. posted this:Process for cooling Photovoltaic ModulesPhotovoltaic modules generating electric energy from global radiation often heat up under high global radiation values and loos electric power under these conditions, offen called voltage drop, We have developed different cooling methods which reduce temperature of photovoltaic modules and at the same time generate additional electric energy during cooling. For this cooling process we use thermogenerators. Based on weather situation cooling of photovoltaic modules could result in higher electric energy.
Science and Technology Park
NDI Foundation posted this:NEW FLUORINATED CARBON MATERIALS FOR FUEL CELLS AND BATTERIESOur project is the solution for sorting out rechargeable batteries enchanted anode and fuel cells Proton Exchange Membranes (PEM) efficiency issues. We propose to start mass production and sales of the products based on the new technology of Soft Fluorination for Carbon Materials and products derived by this technology. Our product is globally prospective and ready for industrial use. The product is targeted to the following segments of clients: - fuel cells producers - proton exchange membranes (PEM); - energy storage systems - batteries and super-capacitors electrodes; - Super-acid Catalysts for numerous uses; - Fillers for fluorinated resins; - Biologically indifferent sorbents (e.g. for blood purification); - Hydro-isolation of resins adhesion of construction composite materials and pigments. As so far in the fuel still not realized their potential as a cost efficient, environmentally friendly and productive in converting available chemical energy into electric energy.
University of Huelva posted this:Power supply system controlled from internet for devices connected to a lanNowadays there are devices that allow the control of devices connected to a network from the own network. The classical method to access them from a different network is the redirection of the corresponding TCP or UDP connections to local networks from the border router. The redirection requires a high level of expertise in communications to be performed. Another strategy that is often used is the creation of VPN (virtual private network). This technique allows the control of access but does not allow connections to be discriminated or the management of power supply. The proposed system allows you to control the person and the moment to access as well as the free access. The modification of these constrains can be performed in the course of an access session. In addition, the system allows the control of power supply of the device you want access to. The interface is very friendly and does not require continuous changes in the configuration of the router. The system has a local database access control and validation can be delegated to other servers using protocol validation like LDAP, IMAP, POP3, etc.
Laser Consult Ltd. posted this:Vertical axis wind turbine for slow and changing wind speedOne of our partner company active in the fields of construction, trade and services has developed a solution to accelerate and regulate the wind speed to handle low wind speed and high wind gusts. The presented product is in the capacity range where other vertical axis wind turbines (VAWTs) are however its energy production is more effective. The Hungarian firm is looking for industrial partners interested in licence agreement.
Energy & Waste posted this:Biolimp-MPdry. Technology for biogas cleaningBiogas is a dirty gas. Therefore, it requires a previous cleaning to be used as biofuel. There are many components to be removing, among them, water vapor, siloxane, halogenated hydrocarbons and H2S, all of them, affects the good performance of the CHP system. The Biolimp-MPdry technology is a multipropose technology that allows the biogas cleaning with a very lower costs and high performace yield.
Energy & Waste posted this:Biogas dryer. For biogas water vapor removingBiolimp-Dry technology combines the cooling and condensation techniques, allowing to achieve elimination efficiency of over 95% depending on the working temperature with low operating costs. This can include a washer-recuperator, which in addition to minimizing the energy needs of the operation, allows to wash the biogas with its own condensates, which produces a partial reduction of the H2S and NH3, that accompany the biogas, reason why it can be considered a multipurpose technology.
Universidad de Alcalá-OTRI posted this:GEISER Research Group and its Power Electronic LabThe Group of Electronic Engineering Applied to Renewable Energy Systems of Alcalá University (GEISER) presents the Power Electronics Research Lab, as a place to Research and Development, equipped with all of the tools and instrumentation necessary for the development of power electronic systems. That includes: - Yokogawa oscilloscopes - Power analyzer and data loggers - a dSPACE system - a Regatron Full 4-quadrant grid simulator and - ADS AC/DC electronic loads ....among others.
Benemérita Universidad Autónoma de Puebla posted this:PHOTOVOLTAIC CELL OF HIGH SOLAR CONCENTRATION USING A POWER TRANSISTOR AS AN ELEMENT FOR CONVERTING ENERGYThe present invention provides a photovoltaic cell of high solar concentration, as well as a system for generating energy from the solar concentration. The cell consists in a power transistor of the MJ15023 type, a ring-shaped aluminum base, a glass bell, a rubber ring for sealing purposes and an aluminum base.
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.
Cracow University of Technology posted this:Institute of Thermal Power Engineering - Cracow University of TechnologyInstitute of Thermal Power Engineering is providing research and education in the field of energy technologies. The Institute covers a wide area of energy research, from expert works for the power sector, to investigations of the most advanced technologies for energy generation
Cracow University of Technology posted this:Low energy building design and thermal refurbishment of existing buildingsOUR MAIN GOALS Tools and good practice procedures for low energy building design, enabling to reduce demand on heating and prevent cooling demand while maintaining high indoor air quality. Because of the big volume of poor quality prefabricated apartment buildings, that still exist in Poland, one of our goals is also to elaborate a scenario of holistic revitalisation of those buildings in accordance with the requirements of sustainable development.
Technology Transfer Office
RAMOT at Tel Aviv University Ltd. posted this:Renewable Clean EnergyRenewable energy sources such as solar and wind energy, and bio-mass for bio-fuels. Solar energy, MEMS energy converters, thermal energy storage, combined heat and power, biofuel production, water disinfection/ desalination, and cogeneration of power and biofuels. Project ID : 12-2011-234