The effect of bias in gas temperature measurements on the control of a Solid Oxide Fuel Cells system
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Daily and seasonal temperature variations induce deflections of bridges. The amplitude of these moments is significant in comparison with the yearly increment caused by irreversible long-term deflections. To improve the quality of the interpretation of mon ...
IABSE Symposium on Large structures and Infrastructures for environmentally constrained and urbanised areas2010
We study the coupling of the equations of steady-state magnetohydrodynamics (MHD) with the heat equation when the buoyancy effects due to temperature differences in the flow as well as Joule effect and viscous heating are (all) taken into account. Two mode ...
We report a room-temperature measurement of nanomechanical motion with an imprecision below the standard quantum limit (SQL), using cavity-enhanced optical near fields. Fundamental thermodynamical cavity frequency fluctuation limits the total imprecision t ...
The operating temperature range of molten carbonate fuel cells (MCFCs) is about 925-955K. An input gas temperature of at least 855 K is necessary to guarantee good ionic conduction inside the cells. Maximum local temperatures higher than 960 K should be av ...
Structural stability issues in planar solid oxide fuel cells arise from the mismatch between the coefficients of thermal expansion of the components. The stress state at operating temperature is the superposition of several contributions, which differ depe ...
The common technology for solid oxide fuel cells (SOFC) is based on a cermet (ceramic-metal composite) anode of nickel with yttria stabilized zirconia (YSZ), often used as the supporting structure. One of the main limitations of this technology is the tole ...
Στην παρούσα εργασία χαρακτηρίστηκε η χρονική εξέλιξη της μικροδομής των ανόδων κυψελών καυσίμου στερεού οξειδίου (Solid Oxide Fuel Cells, SOFC) με χρήση ηλεκτρονικής μικροσκοπίας σάρωσης. Με χρήση μίας νέας τεχνικής ανάλυσης εικόνων SEM διαχωρίστηκαν και ...
The increasing cost of carbon based fuels pushes the electricity generation market towards more efficient electricity generation technologies. In this context, fuel cells offer the opportunity to increase efficiency and lower CO2 and NOx emissions, in part ...
Laboratory tests and inverse methods are used for the determination of the thermophysical properties of a CuCrZr alloy. The solidification path (temperature versus solid fraction curve) is determined using the Single Pan Thermal Analysis (SPTA) technique d ...
We present a thermally activated solvent bonding technique for the formation of embedded microstructures in polymer. It is based, on the temperature dependent solubility of polymer in a liquid that is not a solvent at room temperature. With thermal activat ...