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Now showing items 1491-1500 of 2249
Cooling potential for hot climates by utilizing thermal management of compressed air energy storage systems
(Springer Nature, 2022)
This work presents findings on utilizing the expansion stage of compressed air energy storage systems for air conditioning purposes. The proposed setup is an ancillary installation to an existing compressed air energy ...
Design and Optimization of Fuel Cells: A Case Study on Polymer Electrolyte Membrane Fuel Cell Power Systems for Portable Applications
(Wiley, 2022)
Fuel cells are energy conversion devices that directly convert chemical energy of fuels such as hydrogen to useful work with negligible environmental impact and high efficiency. This study deals with thermodynamic analysis ...
Melting performance of a composite bio-based phase change material: An experimental evaluation of copper foam pore size
(Elsevier, 2022)
This paper presents an experimental study on the thermal performance of a composite heat sink consisting of a bio-based phase change material and copper foam. The experiments are carried out at three different heat loads ...
Design and Comparison Analysis of Various Flow Configurations in Bipolar Plates via Numerical Simulation
(Canadian Center of Science and Education, 2021)
Bipolar plates play a major role in the overall performance of fuel cells, hence their proper design and optimization are essential. In this regard, pressure drop across bipolar plates has a major impact on the efficiency. ...
Optimization of a Confined Jet Geometry to Improve Film Cooling Performance Using Response Surface Methodology (RSM)
(MDPI, 2020)
This study investigates the interrelated parameters affecting heat transfer from a hot gas flowing on a flat plate while cool air is injected adjacent to the flat plate. The cool air forms an air blanket that shield the ...
Evaluating velocity and temperature fields for Ranque Hilsch vortex tube using numerical simulation
(Elsevier, 2021)
In this study, a three-dimensional numerical investigation is carried out to study the flow field inside a Ranque-Hilsch vortex tube (RHVT) model. Flow parameters such as velocity, temperature, and pressure are plotted at ...
Exergy analysis of heat exchangers in the copper–chlorine thermochemical cycle to enhance thermal effectiveness and cycle efficiency
(Oxford University Press, 2011)
Most existing nuclear power plants in North America are typically water-cooled and operate at 250–500°C. For this temperature level, the copper–chlorine (Cu–Cl) cycle is one of the most promising cycles that can be integrated ...
Process simulation and analysis of a five-step copper–chlorine thermochemical water decomposition cycle for sustainable hydrogen production
(Wiley, 2014)
A process model of a five-step copper–chlorine (Cu–Cl) cycle is developed and simulated with the Aspen Plus simulation code. Energy and mass balances, stream flows and properties, heat exchanger duties, and shaft work are ...
Numerical Analysis of Film Cooling Shield Formed by Confined Jet Discharging on a Flat Plate
(International Information and Engineering Technology Association, 2019)
The effects of centrifugal force and thermal conductivity on the effectiveness of a film cooling shield are investigated in this study. A confined jet with 90 degree angle is used, to inject cooling fluid into hot steam, ...
Investigation of an integrated hydrogen production system based on nuclear and renewable energy sources: a new approach for sustainable hydrogen production via copper–chlorine thermochemical cycles
(Wiley, 2011)
Hydrogen production via thermochemical water decomposition is a potential process for direct utilization of nuclear thermal energy to increase efficiency and thereby facilitate energy savings. Thermochemical water splitting ...