Heat transfer—A review of 2005 literature

Goldstein, R. J.; Ibele, W.E.; Patankar, S. V.; Simon, Terrence W.; Kuehn, Thomas H.; Strykowski, Paul J; Tamma, Kumar K.; Heberlein, J.; Davidson, Jane H.; Bischof, John C.; Kulacki, F. A.; Kortshagen, Uwe R.; Garrick, Sean C.; Srinivasan, Vinod; Ghosh, Kalyanjit; Mittal, Rajat

doi:10.1016/j.ijheatmasstransfer.2010.05.005

Cited by 68 publications

(31 citation statements)

References 1,950 publications

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“…[10]. Most of the research by 2005 had concentrated on electronics cooling applications especially on the variation of the geometric features such as shapes, sizes, and orientations to the flow in heat transfer systems but in later years, research on TE technology has gained a lot of momentum [11].…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review of thermoelectric technology: Materials, applications, modelling and performance improvement

Twaha

Zhu

Yan

et al. 2016

Renewable and Sustainable Energy Reviews

479

208

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Abstract:Thermoelectric (TE) technology is regarded as alternative and environmentally friendly technology for harvesting and recovering heat which is directly converted into electrical energy using thermoelectric generators (TEG). Conversely, Peltier coolers and heaters are utilized to convert electrical energy into heat energy for cooling and heating purposes The main challenge lying behind the TE technology is the low efficiency of these devices mainly due to low figure of merit (ZT) of the materials used in making them as well as improper setting of the TE systems. The objective of this work is to carry out a comprehensive review of TE technology encompassing the materials, applications, modelling techniques and performance improvement. The paper has covered a wide range of topics related to TE technology subject area including the output power conditioning techniques. The review reveals some important critical aspects regarding TE device application and performance improvement. It is observed that the intensified research into TE technology has led to an outstanding increase in ZT, rendering the use TE devices in diversified application a reality. Not only does the TE material research and TE device geometrical adjustment contributed to TE device performance improvement, but also the use of advanced TE mathematical models which have facilitated appropriate segmentation TE modules using different materials and design of integrated TE devices. TE devices are observed to have booming applications in cooling, heating, electric power generation as well as hybrid applications. With the generation of electric energy using TEG, not only does the waste heat provide heat source but also other energy sources like solar, geothermal, biomass, infra-red radiation have gained increased utilization in TE based systems.However, the main challenge remains in striking the balance between the conflicting parameters; ZT and power factor, when designing and optimizing advanced TE materials.Hence more research is necessary to overcome this and other challenge so that the performance TE device can be improved further.

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Section: Introductionmentioning

confidence: 99%

A comprehensive review of thermoelectric technology: Materials, applications, modelling and performance improvement

Twaha

Zhu

Yan

et al. 2016

Renewable and Sustainable Energy Reviews

479

208

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“…Swirling flow in pipes and ducts are found in many engineering applications [6,7] (e.g. swirl tubes, vortex tubes, hydrocyclone, swirl combustors, pipe lines, mixers, flow guiders etc.).…”

Section: Introductionmentioning

confidence: 99%

The Development of Swirling Decaying Laminar Flow in an Annular Pipe

et al. 2018

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Abstract. Work on the hydrodynamic entry length of pipe and duct flow has been well studied over the years. The assumption of fully developed flows is commonly used in many practical engineering applications (e.g. Moody's chart). For laminar axial pipe flow, the hydrodynamic entry length can be found through the monomial proposed by Kays, Shah and Bhatti (KSB) (Lh=0.056ReDh). In contrast, several approximations exist for fully turbulent flows (i.e. 10Dh-150Dh). Through theoretical and numerical investigations, the hydrodynamic entry length for swirling decaying pipe flow in the laminar regime is investigated. It was found that, the development length Lh for the axial velocity profile changes when a tangential component is added to the mean flow. The reduction in the hydrodynamic length was found to be dependent on the inlet swirl angle θ. The results indicate that a modification can be made on the KSB equation for two-dimensional swirling annular pipe flow.

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“…The objective of the present work is to find out a generalized correlation that can be used to estimate the fin efficiency of any kind of high performance fins. This task is vital in order to avoid seeking for the exact fin efficiency equation among the large number of researches devoted to this topic in the literature [12][13][14][15][16][17][18][19]. To achieve the latter objective, the common characteristics that most high performance fins share need to be identified and analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve the latter objective, the common characteristics that most high performance fins share need to be identified and analyzed. It should be mentioned that the previous objectives received almost no attention in the heat transfer literature [18,19]. As such, they have been considered as the main motivation behind the present work.…”

Section: Introductionmentioning

confidence: 99%

Generalized Correlations for Heat Transfer through High Performance Fins

Khaled

Arabia²

2013

Advances in Mechanical Engineering

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Analysis of heat transfer through different candidates for high performance fins is considered in this work. These candidates are: (A) fins of constant cross-sectional area, (B) fins of constant cross-sectional area gradient, and (C) radial fins with powerlaw cross-sectional area distribution. The types (A) and (B) fins are allowed having variable power-law profile distributions. The energy equation for each case is solved analytically, and closed form equations for various performance indicators including the fin efficiency are obtained. It is identified that high performance fins are those fins having larger tip and surface areas and smaller tip thickness than those of the straight fin. These effects tend to augment the fin heat transfer rate. One of the indicators of the type (A) fins is found to become dependent on the tip thickness when it is smaller than the base thickness and for thermal lengths larger than 1.5. The type (C) fins are found to transfer more thermal energy than the type (B) fins under same tip area and tip thickness. Finally, generalized correlations for the fin efficiency of high performance fins as function of base and tip areas and thicknesses and the thermal length are proposed and validated.

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Heat transfer—A review of 2005 literature

Cited by 68 publications

References 1,950 publications

A comprehensive review of thermoelectric technology: Materials, applications, modelling and performance improvement

A comprehensive review of thermoelectric technology: Materials, applications, modelling and performance improvement

The Development of Swirling Decaying Laminar Flow in an Annular Pipe

Generalized Correlations for Heat Transfer through High Performance Fins

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