Showing papers on "Fin (extended surface) published in 2016"
TL;DR: In this paper, four cell-cooling methods: air cooling, direct liquid cooling, indirect liquid cooling and fin cooling, were evaluated using a typical large capacity Li-ion pouch cell designed for EDVs from the perspective of coolant parasitic power consumption, maximum temperature rise, temperature difference in a cell, and additional weight used for the cooling system.
454 citations
TL;DR: It is observed that the number of branches in the optimised design increases with increasing Grashof numbers, which is opposite to two-dimensional topology optimised designs, which indicates that carefully tailored and complex geometries may improve cooling behaviour considerably compared to simple heat fin geometry.
205 citations
TL;DR: In this paper, a shell-and-tube latent heat thermal storage unit was designed to investigate the dynamic thermal behavior of a PCM, and the thermal properties, including that of melting temperature and latent heat, were detected by Differential Scanning Calorimetry.
159 citations
TL;DR: In this paper, the effect of channel width on the performance and heat transfer mechanisms on open microchannel surfaces with three coating configurations: (i) sintered-throughout, (ii) Sinteredfin-tops, and (iii) SINTered-channels.
148 citations
TL;DR: In this article, a recently proposed optimization algorithm named as "Jaya algorithm" is used for the dimensional optimization of a micro-channel heat sink, and the results obtained by the application of Jaya algorithm are found much better than those reported by the other approaches.
145 citations
TL;DR: In this article, a geometry optimization method was proposed to enhance the cooling performance of the micro square pin-fin heat sink, which is characterized by low thermal resistance, compact structure and uniform temperature distribution along the flow direction.
143 citations
TL;DR: In this article, a three-dimensional CFD numerical simulation is successfully carried out on thermo-hydraulic characteristics of a new smooth wavy fin-and-elliptical tube (SWFET) heat exchanger with three new types of vortex generators (VGs), namely - rectangular trapezoidal winglet (RTW), angle rectangular winglet(ARW) and curved angle rectangular Winglet (CARW).
137 citations
TL;DR: In this article, the influence of perforated and typical helical fin on hydrothermal treatment in a water-to-air heat exchanger is presented. But the authors focus on the effect of pitch ratio (λ), Reynolds number ( Re a ), and open area ratio (PR ).
110 citations
TL;DR: An experimental study on a vertical shell-and-tube latent heat thermal storage unit with erythritol as storage media and air as heat transfer fluid (HTF) is conducted to evaluate the thermal behavior and heat transfer performance of the unit as discussed by the authors.
105 citations
TL;DR: In this article, the authors simulated the air flow through fin-tube type heat exchangers with rectangular winglet pairs (RWP) of half the channel height as vortex generators (VG).
102 citations
TL;DR: In this paper, a numerical study for laminar natural convection inside a square enclosure with a single horizontal fin attached to its hot wall has been carried out The enclosure horizontal surfaces are adiabatic, the left wall is hot while the right one is cold The Prandtl number for the flow inside the enclosure is 071.
TL;DR: In this article, the heat transfer rate enhancement caused by natural convection of solid-liquid phase change materials undergoing melting is quantified based on experimental observations and a heat transfer enhancement factor and an effective heat transfer coefficient were developed.
TL;DR: In this paper, the impact of natural convection on melting in high temperature flat plate latent heat thermal energy storage systems was studied with an experimentally validated numerical model in a parameter study with various widths and heights of enclosure dimensions.
TL;DR: In this paper, the simultaneous convection-radiation heat transfer through a moving fin with heat generation was studied, and the optimal temperature distribution for a longitudinal rectangular fin was obtained at stationary fin-with heat generation-without radiation case.
TL;DR: In this article, secondary branches were added in an alternating fashion to the peaks and the troughs of the wavy micro-channel configuration to enable cross-channel mixing, which showed an increase in heat transfer performance, albeit with a pressure drop penalty.
TL;DR: In this article, a powder-adsorbent cum binder is applied to the fin surfaces of fin-tube heat exchangers to improve the heat and mass transfer rate of adsorption.
TL;DR: In this article, a novel solar receiver that uses solid particles as a heat transfer fluid is developed at the National Renewable Energy Laboratory for use in concentrating solar power plants, and the prototype considered here is enclosed and contains arrays of hexagonal heat transfer tubes that particles flow between.
TL;DR: In this article, the effect of fin design parameters on the performance of plate-fin heat exchanges was investigated, in which an improved algorithm combing a Kriging response surface and multi-objective genetic algorithm was used.
TL;DR: In this paper, the authors present a numerical study of heat transfer in a heat exchanger filled with nanofluid, where the walls of the enclosure are insulated and constant temperature conditions are given for hot (Th) and cold (Tc) pipes.
TL;DR: In this article, the use of powders as heat transfer fluid in concentrated solar systems is discussed with respect to current technologies, where SiC powder is conveyed as a dense particle suspension through a multi-tube solar receiver in a bubbling fluidization mode, the upwards flow being established by pressurizing the powder feed.
TL;DR: In this paper, a three-dimensional numerical model of H-type finned tube heat exchangers has been built to optimize its structure and improve its performance, and the Taguchi method is applied to investigate the influence of seven geometric parameters including slit width, row number, fin height, spanwise tube pitch, longitudinal tube pitch and fin thickness and fin pitch.
TL;DR: In this paper, the authors systematically screened all polymers available on a large-scale, selected promising ones based on their theoretical properties and experimentally tested more than 50 candidates and found that polyethylene, polyoxymethylene and polyamides are promising even as recycled material.
TL;DR: The results of this study pave the way for more credible designs of cooling systems of electronic devices to promote a high-performance and longer life cycle.
TL;DR: In this paper, a parametric study was conducted to explore the effects of the pertinent parameters, such as; Rayleigh number, size and type of the nanoparticles, shape of the enclosure, orientation and number of the hot and cold cylinders on the fluid flow and heat transfer characteristic.
TL;DR: In this article, the effects of SCO2-side pressure, mass flux and buoyancy force as well as water-side mass flux on the heat transfer performance of a double pipe heat exchanger were investigated.
TL;DR: In this article, the influence of fin height on melting heat transfer and TES performance of a phase change material (PCM) in a circumferentially finned spherical capsule was studied with application to latent heat thermal energy storage (TES).
TL;DR: In this paper, a system was designed and manufactured to measure the convection heat transfer coefficient of different conditions of cold air with minimum quantity lubrication (CAMQL) and the results indicated that air pressure is a more important factor than temperature in cooling process at high thermal power.
TL;DR: In this paper, an artificial neural network (ANN) model was developed to simulate the thermodynamic performance of a forced convection solar air heater (FCSAH) using flat absorber plate and a pin-fin absorbber plate packed with paraffin wax to have a realistic performance comparison.
Abstract: In this work, the thermodynamic performance of a forced convection solar air heater (FCSAH) was evaluated using two different absorber plate configurations, namely a flat absorber plate and a pin–fin absorber plate packed with latent heat storage material (paraffin wax). The experiments were carried out under the meteorological conditions of Coimbatore city in India. The parameters such as outlet air temperature, thermo-hydraulic efficiency and exergy efficiency were evaluated with reference to solar intensity, ambient temperature and ambient wind velocity. An artificial neural network (ANN) model was developed to simulate the thermodynamic performance of a FCSAH using flat absorber plate and pin–fin absorber plate packed with paraffin wax to have a realistic performance comparison. The ANN-predicted results are found to be closer to the experimental values with a maximum fraction of absolute variance, minimum root-mean-square errors and minimum coefficient of variance. The results showed that the pin–fin absorber plate packed with paraffin wax has additional heat storage for the period of 3 h with 2–5 °C enhanced outlet air temperature when compared to the flat absorber plate. The FCSAH using pin–fin absorber plate packed with paraffin wax has 3–35 % higher thermo-hydraulic efficiency with 2–15 % higher exergy efficiency when compared to the flat absorber plate. The results confirmed that pin–fin absorber plate packed with paraffin is a good option to enhance the thermodynamic performance of a FCSAH.
TL;DR: In this article, the authors investigated the thermophysical properties of Al 2 O 3 -deionized (DI) H 2 O nanofluid under natural convection in the classical Rayleigh-Benard configuration, which consists of a cubic cell with conductive bottom and top plates, insulated sidewalls and optical access.
TL;DR: In this article, the benefits of using pin heat sinks (PHSs) with single, rectangular slotted or notched pin perforations, were explored computationally, using a conjugate heat transfer model.