Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger
This contemporary experiment examines heat transfer and friction factor of liquid (water) going in a double pipe heat exchanger with twisted tape (TT) insert. Effect of twisted tape in DPHE inserts dimple configuration by providing a dimple protrusion surface only on the front face with a hole confi...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-06-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X2300309X |
| _version_ | 1797833628970909696 |
|---|---|
| author | Jatoth Heeraman Ravinder Kumar Prem Kumar Chaurasiya Hristo Ivanov Beloev Iliya Krastev Iliev |
| author_facet | Jatoth Heeraman Ravinder Kumar Prem Kumar Chaurasiya Hristo Ivanov Beloev Iliya Krastev Iliev |
| author_sort | Jatoth Heeraman |
| collection | DOAJ |
| description | This contemporary experiment examines heat transfer and friction factor of liquid (water) going in a double pipe heat exchanger with twisted tape (TT) insert. Effect of twisted tape in DPHE inserts dimple configuration by providing a dimple protrusion surface only on the front face with a hole configuration placed adjacent to it over the tube length of 1500 mm and diverse dimple diameter (D) and dimple diameter-to-depth ratio (D/H) proceeding heat transfer and friction factor(f) characteristics are analysed in this work. Twist ratio for all cases is 5.5 for each twist, range of Reynolds number (Re) 6000–14,000, D of 2, 4, and 6 mm and (D/H) of 1.5, 3 and 4.5. Six twisted tapes with dimples were tested, and their performance was compared to that of twist with plain tube. It is discovered that the Nusselt number is the deviance with respect to Reynolds number of a plain tube (without twisted tape and dimples) with an inner tube diameter of d = 16 mm. It is evident from the plot that there is an increase in the rate of Nusselt number with a subsequent increase in the value of Reynolds number. Through experimental analysis conducted, Therefore, Optimum value for higher Nusselt number is standard for discussion at D/H = 3 for different diameter as it 111 (for Re = 13987) and 58 (for Re = 6180) using D = 4 mm. As a result of the investigation, it is determined that the depth and diameter of the dimple is directly proportional to the friction factor. Therefore, optimum value for lower friction factor is benchmarked for discussion at D/H = 4.5 for different diameter as it 0.1033 (for Re = 13987) and 0.1437 (for Re = 6180). |
| first_indexed | 2024-04-09T14:26:12Z |
| format | Article |
| id | doaj.art-8d6c8c55dc3746baa6bdda103051ad63 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-09T14:26:12Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-8d6c8c55dc3746baa6bdda103051ad632023-05-04T04:12:26ZengElsevierCase Studies in Thermal Engineering2214-157X2023-06-0146103003Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchangerJatoth Heeraman0Ravinder Kumar1Prem Kumar Chaurasiya2Hristo Ivanov Beloev3Iliya Krastev Iliev4School of Mechanical Engineering, Lovely Professional University, Phagwara, 144411, Punjab, India; Corresponding author.School of Mechanical Engineering, Lovely Professional University, Phagwara, 144411, Punjab, India; Corresponding author.Mechanical Engineering Department, Bansal Institute of Science and Technology, Anand Nagar, Bhopal, 462021, IndiaDepartment of Agricultural Machinery, Angel Kanchev University of Ruse, POB - 7017, Ruse, Bulgaria; Corresponding author.Department of Heat, Hydraulics and Environmental Engineering, Angel Kanchev University of Ruse, POB – 7017, Ruse, BulgariaThis contemporary experiment examines heat transfer and friction factor of liquid (water) going in a double pipe heat exchanger with twisted tape (TT) insert. Effect of twisted tape in DPHE inserts dimple configuration by providing a dimple protrusion surface only on the front face with a hole configuration placed adjacent to it over the tube length of 1500 mm and diverse dimple diameter (D) and dimple diameter-to-depth ratio (D/H) proceeding heat transfer and friction factor(f) characteristics are analysed in this work. Twist ratio for all cases is 5.5 for each twist, range of Reynolds number (Re) 6000–14,000, D of 2, 4, and 6 mm and (D/H) of 1.5, 3 and 4.5. Six twisted tapes with dimples were tested, and their performance was compared to that of twist with plain tube. It is discovered that the Nusselt number is the deviance with respect to Reynolds number of a plain tube (without twisted tape and dimples) with an inner tube diameter of d = 16 mm. It is evident from the plot that there is an increase in the rate of Nusselt number with a subsequent increase in the value of Reynolds number. Through experimental analysis conducted, Therefore, Optimum value for higher Nusselt number is standard for discussion at D/H = 3 for different diameter as it 111 (for Re = 13987) and 58 (for Re = 6180) using D = 4 mm. As a result of the investigation, it is determined that the depth and diameter of the dimple is directly proportional to the friction factor. Therefore, optimum value for lower friction factor is benchmarked for discussion at D/H = 4.5 for different diameter as it 0.1033 (for Re = 13987) and 0.1437 (for Re = 6180).http://www.sciencedirect.com/science/article/pii/S2214157X2300309XDouble pipe heat exchangerDimple configurationTwisted tapePlain twisted tapesPerformance evaluation criteria (PEC) |
| spellingShingle | Jatoth Heeraman Ravinder Kumar Prem Kumar Chaurasiya Hristo Ivanov Beloev Iliya Krastev Iliev Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger Case Studies in Thermal Engineering Double pipe heat exchanger Dimple configuration Twisted tape Plain twisted tapes Performance evaluation criteria (PEC) |
| title | Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger |
| title_full | Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger |
| title_fullStr | Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger |
| title_full_unstemmed | Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger |
| title_short | Experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger |
| title_sort | experimental evaluation and thermal performance analysis of a twisted tape with dimple configuration in a heat exchanger |
| topic | Double pipe heat exchanger Dimple configuration Twisted tape Plain twisted tapes Performance evaluation criteria (PEC) |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X2300309X |
| work_keys_str_mv | AT jatothheeraman experimentalevaluationandthermalperformanceanalysisofatwistedtapewithdimpleconfigurationinaheatexchanger AT ravinderkumar experimentalevaluationandthermalperformanceanalysisofatwistedtapewithdimpleconfigurationinaheatexchanger AT premkumarchaurasiya experimentalevaluationandthermalperformanceanalysisofatwistedtapewithdimpleconfigurationinaheatexchanger AT hristoivanovbeloev experimentalevaluationandthermalperformanceanalysisofatwistedtapewithdimpleconfigurationinaheatexchanger AT iliyakrasteviliev experimentalevaluationandthermalperformanceanalysisofatwistedtapewithdimpleconfigurationinaheatexchanger |