Search
Results
-
Development of a Reliable Packaging for CMOS-based Microelectrode Arrays by Using an Automated Setup
(2014)Procedia Engineering ~ EUROSENSORS 2014, the 28th European Conference on Solid-State TransducersWe present a reliable and versatile microelectrode-array-device-packaging method for use in neurobiological research. The new packaging is simple, user-friendly, durable, and obviates any contamination of the sensitive electrodes (Figure 1). The packaging consists of a custom-designed injection-molded polycarbonate ring that is bonded to the surface of the CMOS chip with a specifically selected biocompatible adhesive. The utilization of ...Conference Paper -
Globally Distributed Engineering Processes: Making the Distinction between Engineer-to-order and Make-to-order
(2014)Procedia CIRP ~ Variety Management in Manufacturing: Proceedings of the 47th CIRP Conference on Manufacturing SystemsThis paper explores how the organizational and technological requirements of globally distributed engineering processes differ for make-to- order (MTO) and engineer-to-order (ETO) production and highlights potential research themes which might contribute to a better understanding of this field. The preliminary results presented in this paper are based on a literature review and an on-going exploratory case study with manufacturers from ...Conference Paper -
Design of a 100 MWh(th) packed-bed thermal energy storage
(2014)Energy Procedia ~ Proceedings of the SolarPACES 2013 International ConferenceA thermal energy storage (TES) system was designed based on a packed bed of rocks as storing material and air as heat transfer fluid. A pilot-scale 6.5 MWhth TES unit was built and tested. A dynamic numerical heat transfer and fluid flow model was developed and experimentally validated with measurements obtained from the pilot-scale TES unit. The simulation model is applied to design an industrial-scale 100 MWhth TES unit for a solar power ...Conference Paper -
Assessment of renewable energy integration for a village using the energy hub concept
(2014)Energy Procedia ~ 2013 ISES Solar World CongressThe built environment represents a major share of global energy consumption. To effectively reduce the energy consumption of urban conglomerations, concepts to sufficiently integrate and manage energy from renewables are necessary. In this paper the energy-hub concept will be applied, which describes the relation between input and output energy flows and can be used to optimize the energy consumption during planning and operation. The ...Conference Paper -
Model-based Process Design of Adsorption Processes for CO2 Capture in the Presence of Moisture
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12Separation processes based on adsorption show potential in the field of carbon dioxide capture and utilization or storage. Model- based process design is a powerful tool to fully exploit this potential. In order to get an accurate description of the behavior of the processes in a fixed bed, a reliable description of the equilibrium adsorption is necessary. In this work the potential of two types of zeolites, 13X and ZSM-5, is investigated ...Conference Paper -
Kinetics of Solid Formation in the Chilled Ammonia System and Implications for a 2nd Generation Process
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12The Chilled Ammonia Process is a mature post-combustion CO2 capture process. The formation of solids in the process at high CO2 and NH3 concentrations was already described in the original patent, but is relatively poorly understood and difficult to explore experimentally. Thermodynamic properties that complicate the experimental investigation, such as the high vapor pressures of CO2 and NH3 and the resulting incongruent solubility as ...Conference Paper -
Surpassing the 2D Limit: A 600x High-concentration PV Collector Based on a Parabolic trough with Tracking Secondary Optics
(2014)Energy Procedia ~ 2013 ISES Solar World CongressWe report on the design and performance of a novel 600x high-concentration photovoltaic (HCPV) collector. The design is unique in that it diverges from the predominant HCPV approach of a 3D concentrator mounted on a 2-axis tracker. We consider minimization of the cost per m2 of collecting aperture to be the most important aspect in achieving cost-competitiveness. Accordingly, we borrow from the knowledge of the more mature CSP industry ...Conference Paper -
A pressurized air receiver for solar-driven gas turbines
(2014)Energy Procedia ~ Proceedings of the SolarPACES 2013 International ConferenceA pressurized air-based solar receiver is considered for power generation via gas turbines using concentrated solar energy. The modular solar receiver is designed for heating compressed air to the entrance conditions of a gas turbine in the pressure range 4 – 30 bar and temperature range 800 – 1200 °C. The development work involved the design, fabrication, testing, and modelling of a 3 kWth and a 35 kWth solar receiver prototypes. System ...Conference Paper -
Life Cycle Assessment of Natural gas-based Chemical Looping for Hydrogen Production
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12Hydrogen production from natural gas, combined with advanced CO2 capture technologies, such as iron-based chemical looping (CL), is considered in the present work. The processes are compared to the conventional base case, i.e. hydrogen production via natural gas steam reforming (SR) without CO2 capture. The processes are simulated using commercial software (ChemCAD) and evaluated from a technical point of view considering important key ...Conference Paper -
High temperature rock-bed TES system suitable for industrial-scale CSP plant - CFD analysis under charge/discharge cyclic conditions
(2014)Energy Procedia ~ 8th International Renewable Energy Storage Conference and Exhibition (IRES 2013)The present study aims at dimensioning and modeling, by means of accurate time-dependent 3D computational fluid dynamics simulations, the behavior of a high temperature rock-bed TES system. The latter is exploited to fulfill the round-the-clock energy requirements of a reference 80 MWe industrial-scale CSP plant, based upon the Airlight Energy technology, which uses air as heat transfer fluid. The TES system behavior was analyzed through ...Conference Paper