Effect of square wings in multiple square perforated twisted tapes on fluid flow and heat transfer of heat exchanger tube

Suri, Amar Raj Singh; Kumar, Anil; Maithani, Rajesh

doi:10.1016/j.csite.2017.03.002

Cited by 47 publications

(7 citation statements)

References 30 publications

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“…42 In present study authors conducted detailed literature survey and found that many researchers also developed correlation for heat transfer and friction factor ( ff) which can be used to predict and extrapolate the heat transfer and ff for a wide range of Re. Based on the correlations developed by various researchers, 35,[42][43][44][45][46] author conducted empirical analysis and also calculated thermo-hydraulic performance parameters for these studies. The results of THPP are presented in supplementary Figure 24.…”

Section: Effect Of Pressure Drop On Thermal Performance Of Spt When U...mentioning

confidence: 99%

A review study on the performance enhancement of solar parabolic trough receiver by various passive techniques

Singh

Samir²,

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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This is a new era where the world’s energy consumption is so high and is likely to increase over 60% of current consumption by the year 2030. Therefore, renewable energy should be used most frequently. The most preferred alternative to fossil fuels is solar energy but converting solar energy into usable form is the most challenging part. The conversion to thermal energy is the one option. In the area of solar thermal power generation, a solar parabolic trough (SPT) collector is an effective method. Also, the use of passive methods to enhance the thermal performance of these parabolic trough receivers is currently the researcher’s interest This review study is focused on different types of geometrical modification (Artificial roughness) used to enhance the thermal performance of SPT receivers. Based on the extensive study it has been found that conical strip insert is a very broad field for research as it can enhance the thermal performance up to 5–10 times. Also there are parameters associated with the conical strips like shape, pitch, angle of twist, slant angle, geometry angle, etc. which can contribute to better performance when used in SPT receiver.

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Section: Effect Of Pressure Drop On Thermal Performance Of Spt When U...mentioning

confidence: 99%

A review study on the performance enhancement of solar parabolic trough receiver by various passive techniques

Singh

Samir²,

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Many investigations have been carried out to analysis the flow field characteristics of thermal and hydrodynamic of twisted tape insert tubes. Singh et al (2017) examined the efficiency factor of twisted tape round tube for stable heat flux. The Reynolds number covered in the range of 6300 to 22500 for co-twist arrangements in the turbulent flow of air in the round tube.…”

Section: Literature Review On Twisted Tape Insert In Heat Exchanger Tmentioning

confidence: 99%

“…Energy is a primary need to live our daily life at expenses of some valuable things such as environment degradation by using fossil fuels. Heat exchangers play a heating/cooling role in various fields like electric power, metallurgy, chemical engineering, refrigeration, and airconditioning etc by Sunil et al (2019), Singh Suri et al (2017) and Kumar & Kim (2016). Circular tubes are widely used in heat exchange equipment's because of the ease of production and its capability of withstanding a high pressure and .…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic and Thermal Performance Twisted Tape Insert Provided in Heat Exchanger Tubes: A Review

Kumar¹,

Datt²,

Bhist³

et al. 2019

Frontiers in Heat and Mass Transfer

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This work presents a review of the research recent results concerning the augmentation of hydrodynamic and thermal performance of various twisted tape inserts in heat exchanger tubes. The thermal and hydrodynamic correlations for various twisted tape elements have been summarized. A comparative study of thermal and hydrodynamic performance of numerous twisted elements has also been reported to understand the result of applications of twisted tape inserts in heat exchanger tubes. The literature review found that multiple twisted tapes heat exchanger tube shape enhanced hydrodynamic and thermal performance than other comparable twisted tape inserts heat exchanger tube shapes. The review of twisted tape inserts techniques existing in this paper will be helpful to the investigators working in this field.

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“…5 They have also shown to increase significantly the heat transfer coefficient with a relatively small pressure loss penalty. Suri et al 8 described a twisted tape as a metallic strip twisted at desired shape and dimension, inserted in the tube to create a swirling flow effect thereby improving the performance of the flow. The advantages attributed to the twisted tape insert pave way for further improvement on this type of turbulator by different researchers.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation for Comparative Thermo-Hydraulic Performance of Turbulent Flow in Tubes with Twisted Tape Inserts

Mogaji

Idowu

Jen

2020

JES

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This article focused on investigating numerically the effects of key design parameters including tape thickness, tube wall to tape edge clearance and three different perforated shapes cut (circular, triangular and pentagon) on the heat transfer coefficient enhancement in tube with twisted tape inserts. Water was considered as the working fluid under the turbulent flow of Reynolds number (Re) between 12,000 and 22,000, with constant wall temperature of the tubes. It is found that due to the swirling flow and efficient mixing of the fluid, all the tape inserts considered in this study produced better thermalhydraulic performance than the plain tube without an insert. At the same time, tape inserts with small tube wall to tape edge clearance and considerable thickness value is beneficial to reduce the friction factor, consequently enhancing the heat transfer rate. Through the thermal performance factor (TPF) evaluation, the twisted tape with perforated triangular shape cut has an advantage over the pentagon and circular shapes cut with increasing Re. A maximum TPF as high as 1.68 can be obtained for the twisted tape with perforated triangular shape cut under low turbulent Re.

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Effect of square wings in multiple square perforated twisted tapes on fluid flow and heat transfer of heat exchanger tube

Cited by 47 publications

References 30 publications

A review study on the performance enhancement of solar parabolic trough receiver by various passive techniques

A review study on the performance enhancement of solar parabolic trough receiver by various passive techniques

Hydrodynamic and Thermal Performance Twisted Tape Insert Provided in Heat Exchanger Tubes: A Review

Numerical Simulation for Comparative Thermo-Hydraulic Performance of Turbulent Flow in Tubes with Twisted Tape Inserts

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