Investigation of Thermal Performance of Perforated Finned Heat Exchangers

Yakar, Gülay; Karabacak, Rasim

doi:10.1080/08916152.2014.887159

Cited by 15 publications

(7 citation statements)

References 16 publications

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“…They conclude that the respective permeable fins perform better than the solid fins. Some researchers reported a similar trend for circular shaped perforated fins [14,20,21].…”

Section: Introductionmentioning

confidence: 61%

Experimental Investigation of Integrated Energy Storage on Thermal Performance Enhancement of Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for Air Heating Application

Zakaria

Majid

Harun

et al. 2022

ARFMTS

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Thermal energy storage (TES) in solar thermal application assist to increase the performance and efficiency of the solar thermal collector system. Various technique has been developed to enhance TES performance such as using water and PCM as energy storage material. Type of material selection and design arrangement also contribute to the performance of solar thermal collector. The aim of this research is to enhance the thermal performance of energy storage on Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for air heating application. The performance study has been conducted to measure the outlet temperature and energy storage rates as per indoor setup under the artificial solar radiation on the effect of parameters such as inner absorber surface area air contact (perforated fins), outer absorber selective coating surface, outer absorber wall thickness, double layer non vacuum glass tube, single layer transparent outer glass tube and single layer thin film inner glass tube. The results showed that the performance of temperature outlet, energy store and energy buffer increase at wind speed 0.9 m/s, zero (0) perforated fin, non-coating outer absorber and 2mm outer absorber wall thickness. It was also demonstrated that a double layer vacuum glass tube showed a better thermal performance enhancement compared with double layer non-vacuum glass tube, single layer transparent outer glass tube and single layer thin film inner glass tube. This concluded that EGATC performance can be increase with those respective parameters.

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“…They conclude that the respective permeable fins perform better than the solid fins. Some researchers reported a similar trend for circular shaped perforated fins [14,20,21].…”

Section: Introductionmentioning

confidence: 61%

Experimental Investigation of Integrated Energy Storage on Thermal Performance Enhancement of Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for Air Heating Application

Zakaria

Majid

Harun

et al. 2022

ARFMTS

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“…Hot water inside the finned tube warms the fin air side. Perforated finned tubes with widths of 6 mm were studied experimentally by [67] to determine the best location that influenced the thermal properties and, therefore, performance increased. Perforation fins may diminish the boundary layer breadth created on ring-shaped fins, improving heat transmission.…”

Section: 4perforated Finsmentioning

confidence: 99%

A review on the modification of circular fin and tube heat exchangers through new innovative fin shapes

2022

IJATEE

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Heat exchanger tubes with circular fins have been widely used in industrial and commercial applications over the past decade and are considered one of the major researcher's concerns in a range of engineering applications for their affordable cost and potential future to improve heat transfer. This review summarises the recently optimised circular fins (needle, trimmed, crimped, perforated) and how they affect heat transmission, the pressure generated and weight. Where varying fin-related parameters (fin height, fin material, the gap between fins, and number of fins) and flow-related parameters (inlet air velocity or manufacturing fin design) are aimed to optimise the performance in a different manner.In conclusion, designs of novel fin shapes remained a challenging field and demanded more studies to reinforce the existing papers to accomplish the optimum required performance.

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“…Yakar and Karabacak [7] experimentally tested a heat exchanger with annular fins Ø 87 mm and a thickness of 0.5 mm. A 6 mm hole was placed on the fin at different angular positions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Tube Heat Exchanger with Perforated Star-Shaped Fins

Bošnjaković

Muhič²

2020

Fluids

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This article discusses the possibility of further reducing the mass of the heat exchanger with stainless steel star-shaped fins while achieving good heat transfer performance. For this purpose, we perforated the fins with holes Ø2, Ø3, and Ø4 mm. Applying computational fluid dynamics (CFD) numerical analysis, we determined the influence of each perforation on the characteristics of the flow field in the liquid–gas type of heat exchanger and the heat transfer for the range of Re numbers from 2300 to 16,000. With a reduction in the mass of the fins to 17.65% (by Ø4 mm), perforated fins had greater heat transfer from 5.5% to 11.3% than fins without perforation. A comparison of perforated star-shaped fins with annular fins was also performed. Perforated fins had 51.8% less mass than annular fins, with an increase in heat transfer up to 26.5% in terms of Nusselt number.

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Investigation of Thermal Performance of Perforated Finned Heat Exchangers

Cited by 15 publications

References 16 publications

Experimental Investigation of Integrated Energy Storage on Thermal Performance Enhancement of Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for Air Heating Application

Experimental Investigation of Integrated Energy Storage on Thermal Performance Enhancement of Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for Air Heating Application

A review on the modification of circular fin and tube heat exchangers through new innovative fin shapes

Numerical Analysis of Tube Heat Exchanger with Perforated Star-Shaped Fins

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