Performance Assessment of Bladeless Micro-Expanders Using 3D Numerical Simulation [PDF]
This paper summarizes the development of fully 3D Computational Fluid Dynamics (CFD) analysis for bladeless air micro expander for 200 W and 3 kW rated power. Modelling of nozzle along with rotor is done using structured mesh.
Renuke Avinash +2 more
doaj +1 more source
A benchmark study on mantle convection in a 3-D spherical shell using CitcomS [PDF]
As high-performance computing facilities and sophisticated modeling software become available, modeling mantle convection in a three-dimensional (3-D) spherical shell geometry with realistic physical parameters and processes becomes increasingly feasible.
Gurnis, Michael +4 more
core +1 more source
Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications [PDF]
Salt hydrates, such as MgSO4·7H2O, are considered attractive materials for thermal energy storage, thanks to their high theoretical storage density. However, pure salt hydrates present some challenges in real application due to agglomeration, corrosion ...
Brancato, Vincenza +9 more
core +2 more sources
Turbocharged SOFC System: Emulation and Control in Cyber-Physical Mode [PDF]
The objective of this work regards an SOFC system pressurized by a turbocharger and the related emulation tests for control system development. Due to the interest in coupling high efficiency operations with reasonable capital costs a turbocharged SOFC ...
Ferrari Mario Luigi +2 more
doaj +1 more source
Market opportunities for small energy harvesters [PDF]
There are several small energy sources that can be exploited to provide useful energy: small temperature differences, mechanical vibrations, flow variations, latent exhausts are just some examples.
Cuneo Alessandra +3 more
doaj +1 more source
Atmospheric Chemistry in Giant Planets, Brown Dwarfs, and Low-Mass Dwarf Stars III. Iron, Magnesium, and Silicon [PDF]
We use thermochemical equilibrium calculations to model iron, magnesium, and silicon chemistry in the atmospheres of giant planets, brown dwarfs, extrasolar giant planets (EGPs), and low-mass stars.
Bruce Fegley +31 more
core +1 more source
Characterization and experimental comparison of commercial PEMFC stacks for marine applications [PDF]
PEM Fuel Cells are considered among the most promising technologies for hydrogen utilization in both stationary and automotive applications. The number of FC installations on board ships – alone or in hybrid configuration with batteries – is increasing ...
Gadducci Eleonora +9 more
doaj +1 more source
Dynamic Effect of Cold-Air Bypass Valve for Compressor Surge Recovery and Prevention in Fuel Cell Gas Turbine Hybrid Systems [PDF]
A large volume between compressor and turbine is present in fuel cell gas turbine hybrid systems. The substantially larger compressor plenum volume modifies the dynamic behaviour of these systems, increasing the risk of compressor surge during transients
Mantelli Luca +2 more
doaj +1 more source
Test campaign of a ducted wind turbine in real operating conditions [PDF]
Wind turbine installation worldwide has increased at unrested pace, as it represents a 100% clean energy with zero CO2 and pollutant emissions. However, visual and acoustic impact of wind turbines is still a drawback, in particular in urban areas.
Valditerra Enrico +3 more
doaj +1 more source
lean H2 and NH3 large production in Paraguay by the 14 GW Itaipu hydroelectric facility [PDF]
This paper aims to present a feasibility study for clean production, storage and distribution of large amounts of hydrogen, starting from low-cost available renewable electrical energy.
Riveros-Godoy G. +3 more
doaj +1 more source

