A5008844415- Refrigeration and Air Conditioning Technologies
- Microgrid Control and Optimization
- Magnetic and transport properties of perovskites and related materials
- Heat Transfer and Optimization
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Nanomaterials and Printing Technologies
- Hybrid Renewable Energy Systems
- Geothermal Energy Systems and Applications
- Adsorption and Cooling Systems
- Smart Grid Energy Management
- Aerosol Filtration and Electrostatic Precipitation
- Heat Transfer and Boiling Studies
- Lattice Boltzmann Simulation Studies
- Textile materials and evaluations
- Advanced Sensor and Energy Harvesting Materials
- Advanced Thermodynamic Systems and Engines
- Advanced battery technologies research
- Solar Thermal and Photovoltaic Systems
- Microfluidic and Bio-sensing Technologies
- Carbon Dioxide Capture Technologies
- Solar-Powered Water Purification Methods
- Iron and Steelmaking Processes
- Advanced Power Generation Technologies
- Aerodynamics and Fluid Dynamics Research
- Chemical Looping and Thermochemical Processes
Ultrasonic Technologies (United States)
2021-2024
Oak Ridge National Laboratory
2014-2022
National Transportation Research Center
2017-2021
University of Guilan
2014-2015
University of Florida
2008
Abstract Engineering strong metal–support interactions (SMSI) is an effective strategy for tuning structures and performances of supported metal catalysts but induces poor exposure active sites. Here, we demonstrate a interaction via reverse route (SMSIR) by starting from the final morphology SMSI (fully-encapsulated core–shell structure) to obtain intermediate state with desirable Using nanoparticles (NPs) as building block, Pd–FeO x NPs are transformed into porous yolk–shell structure...
A numerical analysis was conducted to study a room temperature magnetocaloric refrigerator with 16-layer parallel plates active magnetic regenerator (AMR). Sixteen layers of LaFeMnSiH having different Curie temperatures were employed as material (MCM) in the regenerator. Measured properties data used. transient one dimensional (1D) model employed, which unique method developed significantly accelerate simulation speed multi-layer AMR system. As result, computation case very close...
The vibrational behavior of single-walled carbon nanocones is studied using molecular structural method and dynamics simulations. In approach, point mass beam elements are employed to model the atoms connecting covalent bonds, respectively. Single-walled with different apex angles considered. Besides, under various types boundary conditions studied. Predicted natural frequencies compared existing results in literature also ones obtained by It found that decreasing angle length nanocone an...
Abstract Fabric drying is an energy-intensive process, which generally involves blowing hot dry air across tumbling wet fabric to facilitate evaporation and moisture removal. Most of the energy supplied used overcome enthalpy vaporization for water. Although this process tends be inefficient, it fairly simple forms basis majority existing clothes dryer technology today. To address relatively low efficiency, a new method called “direct contact ultrasonic drying” proposed. The using...
Developing high-resolution 3D printed metallic microchannels is a challenge especially when there an essential need for high packing density of the primary metal. While could be achieved by heating structure to sintering temperature, some heat sensitive applications require other strategies improve In this study goal develop with green (bound) or pack densities on scale 100–300 microns which have robust mechanical structure. Binder-jet printing additive manufacturing process in droplets...
Cloth drying is a major consumer of energy, and most conducted by evaporative methods. The energy efficiency limit commonly assumed to be 100%: one unit latent heat removed per expended. However, this ignores the "free drying" available from unsaturated ambient air possible role pumping. We demonstrate that limits for are fundamentally related both rate psychrometric conditions. A relationship among efficiency, rate, conditions quantified several technologies, comparison technologies...
In this work, a novel Ground-Level Integrated Diverse Energy Storage (GLIDES) system which can store energy via input of electricity or heat and deliver dispatchable is presented [1]. The proposed low-cost hybridizes compressed air pumped-storage approaches that will allow for the off-peak storage intermittent renewable use during peak times. A detailed control-volume analysis carried out, yielding set coupled differential equations are discretized using finite difference scheme used to...
Experimental and numerical investigations are performed to provide an assessment of the transport behavior ultrasonic oscillatory air–water two-phase flow in a microchannel. The exhibits highly unsteady as water air interact with each other during vibration cycles, making it significantly different from well-studied steady microchannels. computational fluid dynamics (CFD) modeling is realized by combing turbulence Reynolds-averaged Navier–Stokes k−ω model phase-field method Eulerian...
The heat transfer rate of magnetocaloric regenerators is a topic extensive research and the cyclability these critical to operation systems with high coefficient performance (e.g., potentially >22, significantly higher than typical vapor compression cooling technologies). To enable operating frequency that will result in specific power, fluid should have thermal conductivity lower heat, i.e., diffusivity. Eutectic metal alloys possess qualities, such as gallium–indium–tin (Galinstan),...
Even though numerical simulation of two-phase flows in microchannels has been attempted by many investigators, most efforts seem to have failed correctly capturing the flow physics, especially slug-flow regime characteristics. The presence a thin liquid film order 10 μm around bubble (sometimes called gas pocket or slug) may be contributing factor above difficulty. Typically, films significant effect on field. Thus, there is strong motivation employ methods avoid some experimental...
This paper demonstrates a new method by which the energy storage density of compressed air systems is increased 56.8% changing composition gas to include condensable component. A higher 7.33 MJ/m3 possible using mixture 88% CO2 and 12% N2 compared 4.67 pure N2. ratio gases representing an optimum was determined through computer simulations that considered variety different proportions from The are based on thermodynamic equilibrium model predicts as function volume pressure under progressive...
Polymer composites are being considered for numerous thermal applications because of their inherent benefits, such as light weight, corrosion resistance, and reduced cost. In this work, the microstructural, thermal, mechanical properties a 3D printed polymer composite with high conductivity examined using multiple characterization techniques. Infrared spectroscopy X-ray diffraction reveal that contains polyphenylene sulfide matrix graphitic fillers, which is responsible conductivity....