Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts
This study involves a computational analysis to find the effectiveness of incorporating twisted tape within a twisted square duct for improving heat transfer, focusing on laminar single-phase flow. The primary goal is to study how varying the tape pitch (y) influences the hydrothermal performance of...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X2401493X |
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| author | V.P. Chithra V. Jayakumar Balaji Bakthavatchalam Sambhaji Kashinath Kusekar Kashif Irshad Khairul Habib |
| author_facet | V.P. Chithra V. Jayakumar Balaji Bakthavatchalam Sambhaji Kashinath Kusekar Kashif Irshad Khairul Habib |
| author_sort | V.P. Chithra |
| collection | DOAJ |
| description | This study involves a computational analysis to find the effectiveness of incorporating twisted tape within a twisted square duct for improving heat transfer, focusing on laminar single-phase flow. The primary goal is to study how varying the tape pitch (y) influences the hydrothermal performance of this system. The twisted square duct pitch (S) and twist ratio (H) were kept constant. The numerical analysis is performed under conditions of uniform wall temperature, and varying the pitch ratio (y/S) across values of 0.25, 0.5,0.75, 1, 1.25, 1.5 and 1.75. The obtained findings suggest that the addition of twisted tape within the twisted square duct results in a greater rate of heat exchange and pressure drop relative to the simple twisted square duct. Research reveals that despite a higher rate of heat transfer for a pitch ratio of 0.25 the increased friction factor results in less effective thermal performance compared to the cases with pitch ratios of 0.75 and 0.5. The thermal performance factor reaches its peak at 1.32, corresponding to the Reynolds number 1000 for a pitch ratio of 0.75 case. Conversely, the lowest thermal performance factor value of 0.89 is observed at the Reynolds number 500 for pitch ratio 1.25 case. |
| format | Article |
| id | doaj-art-f83931b500fe4fcaaca0eb9badf4a8ca |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-f83931b500fe4fcaaca0eb9badf4a8ca2024-12-07T08:26:39ZengElsevierCase Studies in Thermal Engineering2214-157X2024-12-0164105462Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape insertsV.P. Chithra0V. Jayakumar1Balaji Bakthavatchalam2Sambhaji Kashinath Kusekar3Kashif Irshad4Khairul Habib5Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Chennai, Tamilnadu, IndiaDepartment of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Chennai, Tamilnadu, IndiaSchool of Mechanical Engineering, Vellore Institute of Technology, Chennai Campus, Chennai, India; Corresponding author.Department of Mechanical Engineering, Cleveland State University, OH, 44115, USAInterdisciplinary Research Centre for Sustainable Energy Systems (IRC-SES), Research Institute, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia; Mechanical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi ArabiaDepartment of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Darul Ridzuan, MalaysiaThis study involves a computational analysis to find the effectiveness of incorporating twisted tape within a twisted square duct for improving heat transfer, focusing on laminar single-phase flow. The primary goal is to study how varying the tape pitch (y) influences the hydrothermal performance of this system. The twisted square duct pitch (S) and twist ratio (H) were kept constant. The numerical analysis is performed under conditions of uniform wall temperature, and varying the pitch ratio (y/S) across values of 0.25, 0.5,0.75, 1, 1.25, 1.5 and 1.75. The obtained findings suggest that the addition of twisted tape within the twisted square duct results in a greater rate of heat exchange and pressure drop relative to the simple twisted square duct. Research reveals that despite a higher rate of heat transfer for a pitch ratio of 0.25 the increased friction factor results in less effective thermal performance compared to the cases with pitch ratios of 0.75 and 0.5. The thermal performance factor reaches its peak at 1.32, corresponding to the Reynolds number 1000 for a pitch ratio of 0.75 case. Conversely, the lowest thermal performance factor value of 0.89 is observed at the Reynolds number 500 for pitch ratio 1.25 case.http://www.sciencedirect.com/science/article/pii/S2214157X2401493XLaminar flowTwisted tapeTwist ratioTwisted square ductHeat transfer enhancementHeat exchanger |
| spellingShingle | V.P. Chithra V. Jayakumar Balaji Bakthavatchalam Sambhaji Kashinath Kusekar Kashif Irshad Khairul Habib Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts Case Studies in Thermal Engineering Laminar flow Twisted tape Twist ratio Twisted square duct Heat transfer enhancement Heat exchanger |
| title | Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts |
| title_full | Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts |
| title_fullStr | Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts |
| title_full_unstemmed | Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts |
| title_short | Thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts |
| title_sort | thermal performance enhancement of laminar flow using compound twisted square duct and variable pitch twisted tape inserts |
| topic | Laminar flow Twisted tape Twist ratio Twisted square duct Heat transfer enhancement Heat exchanger |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X2401493X |
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