Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating
In this study, electroless plating of nickel, copper, and silver is applied to stainless steel 316 (SUS316) plate heat exchanger (PHE) to enhance thermal-hydraulic efficiency. The electroless plating experiment was first performed on small samples (30 × 30 × 1 mm) to determine optimum control parame...
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Format: | Article |
Language: | English |
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Elsevier
2021-02-01
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Series: | Case Studies in Thermal Engineering |
Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X20305396 |
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author | Dong Ho Nguyen Koung Moon Kim Thi To Nguyen Vo Gyu Hyeon Shim Ji Hoon Kim Ho Seon Ahn |
author_facet | Dong Ho Nguyen Koung Moon Kim Thi To Nguyen Vo Gyu Hyeon Shim Ji Hoon Kim Ho Seon Ahn |
author_sort | Dong Ho Nguyen |
collection | DOAJ |
description | In this study, electroless plating of nickel, copper, and silver is applied to stainless steel 316 (SUS316) plate heat exchanger (PHE) to enhance thermal-hydraulic efficiency. The electroless plating experiment was first performed on small samples (30 × 30 × 1 mm) to determine optimum control parameters, i.e. solution concentration, current density, etching time prior to commercial PHE. The characteristics of the coating surfaces were indicated by static contact angle, thermal shock, roughness profile, Vickers hardness, SEM images, and EDS analysis. In order to research the effect of each electroless coating on PHE performance, a single-phase water flow heat transfer experiment was performed. The thermal-hydraulic efficiency was evaluated using the Overall Heat Transfer Coefficient (OHTC), Friction Factor, Number of Transfer Units (NTU), effectiveness and Performance of Evaluation Criterion (PEC). As a consequence, aqua regia solution with a volumetric ratio of 1HNO3: 2HCl: 75H2O, a current density of 0.1 A/cm2 and a 12-min etching were determined to be the optimum process parameters for optimizing surface area and minimizing mass loss. After electroless coating, the surface was completely changed from smooth to rough, resulting in a change from hydrophobicity to hydrophobicity, as well as a change in surface morphology. More significantly, all coated PHEs displayed a substantial increase in their performance, as shown by PEC ranging from 1.21 to 1.30 in the case of Silver-coated PHE, followed by 1.20–1.24 and 1.11–1.15 in the case of Copper and Nickel respectively. |
first_indexed | 2024-12-14T03:07:05Z |
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id | doaj.art-da532046650442e0a8d8fdeef2dc4dd5 |
institution | Directory Open Access Journal |
issn | 2214-157X |
language | English |
last_indexed | 2024-12-14T03:07:05Z |
publishDate | 2021-02-01 |
publisher | Elsevier |
record_format | Article |
series | Case Studies in Thermal Engineering |
spelling | doaj.art-da532046650442e0a8d8fdeef2dc4dd52022-12-21T23:19:22ZengElsevierCase Studies in Thermal Engineering2214-157X2021-02-0123100797Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver platingDong Ho Nguyen0Koung Moon Kim1Thi To Nguyen Vo2Gyu Hyeon Shim3Ji Hoon Kim4Ho Seon Ahn5Department of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea; Nuclear Safety Research Institute, Incheon National University, Incheon, Republic of KoreaDepartment of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea; Nuclear Safety Research Institute, Incheon National University, Incheon, Republic of KoreaDepartment of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea; Nuclear Safety Research Institute, Incheon National University, Incheon, Republic of KoreaDepartment of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea; Nuclear Safety Research Institute, Incheon National University, Incheon, Republic of KoreaDepartment of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea; AHN Materials Inc, Incheon, Republic of KoreaDepartment of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea; Corresponding author.In this study, electroless plating of nickel, copper, and silver is applied to stainless steel 316 (SUS316) plate heat exchanger (PHE) to enhance thermal-hydraulic efficiency. The electroless plating experiment was first performed on small samples (30 × 30 × 1 mm) to determine optimum control parameters, i.e. solution concentration, current density, etching time prior to commercial PHE. The characteristics of the coating surfaces were indicated by static contact angle, thermal shock, roughness profile, Vickers hardness, SEM images, and EDS analysis. In order to research the effect of each electroless coating on PHE performance, a single-phase water flow heat transfer experiment was performed. The thermal-hydraulic efficiency was evaluated using the Overall Heat Transfer Coefficient (OHTC), Friction Factor, Number of Transfer Units (NTU), effectiveness and Performance of Evaluation Criterion (PEC). As a consequence, aqua regia solution with a volumetric ratio of 1HNO3: 2HCl: 75H2O, a current density of 0.1 A/cm2 and a 12-min etching were determined to be the optimum process parameters for optimizing surface area and minimizing mass loss. After electroless coating, the surface was completely changed from smooth to rough, resulting in a change from hydrophobicity to hydrophobicity, as well as a change in surface morphology. More significantly, all coated PHEs displayed a substantial increase in their performance, as shown by PEC ranging from 1.21 to 1.30 in the case of Silver-coated PHE, followed by 1.20–1.24 and 1.11–1.15 in the case of Copper and Nickel respectively.http://www.sciencedirect.com/science/article/pii/S2214157X20305396 |
spellingShingle | Dong Ho Nguyen Koung Moon Kim Thi To Nguyen Vo Gyu Hyeon Shim Ji Hoon Kim Ho Seon Ahn Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating Case Studies in Thermal Engineering |
title | Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating |
title_full | Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating |
title_fullStr | Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating |
title_full_unstemmed | Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating |
title_short | Improvement of thermal-hydraulic performance of plate heat exchanger by electroless nickel, copper and silver plating |
title_sort | improvement of thermal hydraulic performance of plate heat exchanger by electroless nickel copper and silver plating |
url | http://www.sciencedirect.com/science/article/pii/S2214157X20305396 |
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