Author
Junior Lagrandeur
Bio: Junior Lagrandeur is an academic researcher from Université de Sherbrooke. The author has contributed to research in topics: Vortex tube & Vortex. The author has an hindex of 3, co-authored 6 publications receiving 37 citations.
Topics: Vortex tube, Vortex, Materials science, Boundary layer, Carbon dioxide
Papers
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TL;DR: In this article, the authors focus on perfect gas models developed to predict the performances of counterflow vortex tubes, including empirical and thermodynamics models, models of heat exchangers, models based on a pressure gradient, models on the momentum transfer with particles spinning inward and models on unsteady phenomena like the vortex breakdown.
28 citations
TL;DR: In this article, the authors used two approaches: artificial neural networks (ANNs) and thermodynamic modeling to identify the most important features of counterflow vortex tubes, which can reproduce accurately the cold outlet temperature of vortex tubes from the literature.
21 citations
TL;DR: In this article, vortex tubes are proposed to convert part of the excess pressure into useful heating and cooling, and two different multi-objective algorithms and validated thermodynamic models for both vortex tubes and the compressed air energy storage system were used.
16 citations
TL;DR: In this paper, the authors used a thermodynamic model and experimental data from the literature to analyze the thermal exergy production and exergy destruction in vortex tubes and found that vortex tube exergetic efficiency reaches a maximum (up to 2.88%) for a cold mass fraction around 0.7.
15 citations
TL;DR: In this paper, the authors present a numerical benchmark for the modeling of air Ranque-Hilsch vortex tubes assessing the solver type (pressure- vs. density-based), two different turbulence models (standard k−− e and k− ǫ SST), the near-wall region treatment (high-Reynolds vs. low-reynolds number), different boundary conditions and the inclusion or not of source terms that model the pressure convection term ignored in most turbulent flow simulations.
10 citations
Cited by
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TL;DR: In this paper, the authors evaluated the performance of vortex chamber pumps for coal-water and Bingham fluids with different rheological parameters and determined the dependence of the pump efficiency on the Bingham viscosity and the yield stress.
32 citations
TL;DR: In this article, two supercritical compressed carbon dioxide energy storage systems coupled with concentrating solar thermal storage are proposed to enable a higher penetration of renewable energy sources and satisfy the demand for peak shaving and valley filling of the grid.
Abstract: In recent years, renewable energy, particularly solar energy and wind energy, has demonstrated robust growth worldwide. However, the intermittent nature of these energy sources causes significant challenges for the security and reliability of grid, which limits the penetration growth in power market. To enable a higher penetration of renewable energy sources and satisfy the demand for peak shaving and valley filling of the grid, one possibility is to couple them with energy storage systems. In this study, two supercritical compressed carbon dioxide energy storage systems coupled with concentrating solar thermal storage are proposed. One is a simple compression cycle, and the other is a split compression cycle. Both thermodynamic and economic performance have been investigated numerically. The effects of energy storage pressure, heating temperature, thermal oil mass flow rate and split ratio are discussed. The results indicate that under the designed condition, there exists a maximum energy storage efficiency for the simple cycle when the heating temperature is lower than 538.15K. Continuing to increase heating temperature, the efficiency first increases from 64% to 73.9% rapidly as the total pressure ratio rises from 3 to 5. However, the improvement of it will be limited after the pressure ratio exceeds 5. Besides, if the thermal oil mass flow rate rises, the efficiency also has a maximum value, which appears between 150kg/s and 160kg/s. Finally, for the split cycle, there exists an optimal value. And the optimal condition can promote the Dynamic Payback Period and Levelized Cost of Energy to fall about 2 years and 6.1% compared to the simple cycle.
26 citations
TL;DR: In this article, the authors used two approaches: artificial neural networks (ANNs) and thermodynamic modeling to identify the most important features of counterflow vortex tubes, which can reproduce accurately the cold outlet temperature of vortex tubes from the literature.
21 citations
TL;DR: In this article, the impact of the navigator angle on the energy separation and the internal gas velocity variations (swirl and axial) was investigated and the results showed that the navigators angle of 10 degrees creates the highest cooling and heating capabilities as well as the highest values for the axial velocity and also for the swirl velocity drop.
18 citations
TL;DR: In this article, vortex tubes are proposed to convert part of the excess pressure into useful heating and cooling, and two different multi-objective algorithms and validated thermodynamic models for both vortex tubes and the compressed air energy storage system were used.
16 citations