Journal ArticleDOI
Thermal characteristics in a heat exchanger tube fitted with triple twisted tape inserts
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TLDR
In this article, the influence of triple twisted tape inserts on heat transfer rate, friction factor and thermal enhancement efficiency were experimentally investigated using mild steel triple twisted tapes with four different twist ratios (y ǫ = 1.92, 2.88, 4.81 and 6.79).About:
This article is published in International Communications in Heat and Mass Transfer.The article was published on 2013-11-01. It has received 107 citations till now. The article focuses on the topics: Nusselt number & Heat transfer.read more
Citations
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Journal ArticleDOI
Review of heat transfer enhancement methods: Focus on passive methods using swirl flow devices
TL;DR: In this paper, an extensive literature review of various turbulators (coiled tubes, extended surfaces (fin, louvered strip, winglet), rough surfaces (Corrugated tube, Rib) and swirl flow devices such as twisted tape, conical ring, snail entry turbulator, vortex rings, coiled wire) for enhancing heat transfer in heat exchangers.
Journal ArticleDOI
A comprehensive review on single phase heat transfer enhancement techniques in heat exchanger applications
Tabish Alam,Man-Hoe Kim +1 more
TL;DR: In this article, an effort has been made to categorize the active and passive methods and review the various heat transfer techniques applied in heat exchangers, and a combined method have also been recommended which include both active and active methods.
Journal ArticleDOI
The heat transfer enhancement techniques and their Thermal Performance Factor
TL;DR: A comprehensive review of passive heat transfer devices and their relative merits for wide variety of industrial applications is presented in this paper, where the effectiveness of a heat transfer enhancement technique is evaluated by the Thermal Performance Factor which is a ratio of the change in the heat transfer rate to change in friction factor.
Journal ArticleDOI
Thermal characteristic of a turbulent flow through a circular tube fitted with perforated vortex generator inserts
TL;DR: In this paper, a perforated vortex generator (PVG) was developed to improve convection heat transfer in a circular tube in turbulent flow regime with the Reynolds number over the range 3000-21,000 using air as the working fluid under uniform wall heat flux boundary condition.
Journal ArticleDOI
Review of heat transfer enhancement techniques for single phase flows
TL;DR: Key learning data for design optimization enabled by additive manufacturing and machine learning algorithms is developed and summarized, helping to inform these next-generation heat exchanger design methodologies for a plethora of modern applications such as electrification of vehicles, computing, and classical industries.
References
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Book ChapterDOI
Heat Transfer and Friction in Turbulent Pipe Flow with Variable Physical Properties
TL;DR: In this article, the authors discuss heat transfer and skin friction in turbulent pipe flow with variable physical properties and highlight analytical methods to describe heat transfer mechanisms for constant liquid properties quite satisfactorily and to take into account the influence of the variation of physical properties with temperature versus heat transfer.
Journal ArticleDOI
Performance evaluation criteria for use of enhanced heat transfer surfaces in heat exchanger design
TL;DR: In this paper, a broad range of Performance Evaluation Criteria (PEC) applicable to single-phase flow in tubes is presented and detailed procedures are outlined to calculate the performance improvement and to select the optimal surface geometry.
Journal ArticleDOI
Review of passive heat transfer augmentation techniques
TL;DR: In this paper, a review on progress with passive heat transfer augmentation is presented, where inserts are used in the flow passage to augment the heat transfer rate, where the insert manufacturing process is simple and these techniques can be easily employed in an existing heat exchanger.
Journal ArticleDOI
Experimental investigation of heat transfer and flow friction in a circular tube fitted with regularly spaced twisted tape elements
TL;DR: In this paper, a double pipe heat exchanger fitted with regularly spaced twisted tape elements was investigated and the results from each case were correlated for Nusselt number and friction factor.