Redox flow battery (RFB) is a promising technology to store large amounts of energies in liquid electrolytes attributable their unique architectures. In recent years, various new chemistries have been introduced both aqueous and non-aqueous as pathways lower-cost systems, eventually meeting the long-term cost target USD$ < 100 (kW h)−1 for board market penetration. Since there lack capital data available batteries under same criteria assumptions, fact-based techno-economic analysis evaluated...

A theoretical analysis for laminar flow in the microchannels of arbitrary shape slip regime is presented this article. The momentum equations with first-order slip, second-order and thermal creep boundary conditions are solved by applying a computation-oriented method orthonormal function fully developed incompressible fluid microchannels. dimensionless velocity profile friction factor theoretically predicted microchannel shape. To justify methodology, gas flowing rectangular calculated...

The underground temperature distribution and variation are important for the development utilization of shallow geothermal energy space. In this paper, a remote ground monitoring system was established in Chongqing, located southwest China its with seasons 100m depth measured from June 2010 to 2011. results show that, typical geo-structure variational zone is 0m 10m, where strongly affected by change ambient temperature. Below 11m depth, does not seasons, i.e., it constant zone. below 40...

A new 2D numerical model of a single U-tube ground heat exchanger is proposed and four-thermal-resistance adopted to evaluate the effective pipe-to-borehole, pipe-to-pipe, borehole-to-borehole thermal resistances. The influence temperature distributions on both borehole surface outer diameter two pipes these resistances has been thoroughly studied. best-fit correlations are compared with available equations in literature. It found that present for more accurate than those formulas....

The effective borehole thermal resistance of a vertical, single U-tube ground heat exchanger is numerically studied. nonuniform temperature distributions along the perimeter both and outside diameter two pipes are taken into account to evaluate resistance. A best-fit correlation for proposed, dimensionless resistances compared between present other available equations in literature. It found that more accurate than those formulas.

In this paper, a new single-component lattice Boltzmann model, which is based on exact difference method and extended with an energy transfer equation to model heat transfer, proposed describe liquid-vapor phase transition process. The wettability of the heated wall modeled by interaction force between solid fluid. This validated through simulation water It found that results are in good agreement experimental data. surface tension water, obtained from at different temperatures, closed These...

In this paper，a new single-component lattice Boltzmann method is proposed to describe liquid-vapor phase transition process. Water and ammonia process are simulated by using model for Redlich-Kwong，Redlich-Kwong Soave Peng-Robinson equations of state. Compared with the experimental data water ammonia，the results show that equation state more suitable transitions water，ammonia other substance. particularly，the simulation close data. order demonstrate capability dealing two-phase problems，the...

In this article, the three-dimensional 27-velocities (D3Q27) lattice Boltzmann method (LBM) is employed to simulate fully developed fluid flow and heat transfer in a curved square duct with curvature ratio 0.05–1.0 Dean number 0–200. The so-called instability investigated. It found that for high ratio, onset of transition from single-pair vortex double-pair depends on both ratio. This consistent conventional computational dynamic (CFD) experimental results, differences between simulation...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Quan Liao, Zhihai Tan; Numerical investigations of cold gas dynamic spray with a novel convergent-divergent nozzle. AIP Conf. Proc. 17 October 2013; 1558 (1): 2333–2336. https://doi.org/10.1063/1.4826008 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks...

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Experiments were performed to investigate the performance enhancement of single-phase flow and boiling heat transfer in 3D inner finned helical tubes. The tests for carried out tubes with a curvature 0.0663 length 1.15m, range Reynolds number examined varies from 1000 8500. In comparison smooth tube, experimental results two different fin geometry showed that resistance tube gains greater augmentation. Within measured number, average augmentation ratio are 71% 103%, compared 90% 140%...

This paper presents research that is focused on the particle coating quality of Cold Gas Dynamic Spray (CGDS) process. The affected by several different factors, namely carrier gas species, nozzle-substrate distance, nozzle inlet pressure and size. intent this to use numerical simulations predict find optimized distance size in CGDS process tuning factor Air was chosen as accelerate copper (Cu) particles, which have diameters ranging from 2–50μm.. There are two main target size, going affect...

Abstract Based on four-thermal-resistance-capacitance network within a borehole, an improved thermal-resistance-capacitance model (TRCM), which takes into account the effect of nonuniform temperature distribution along borehole perimeter, is proposed for vertical single U-tube ground heat exchanger. For given geometric and physical parameters exchanger, numerical simulations conventional TRCM based three-thermal-resistance-capacitance three-dimensional (3D) finite volume computational fluid...