Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers
Pin-fin and flat-tube heat exchangers (PFFTHXs) offer a promising alternative to traditional louvered-fin and flat-tube heat exchangers (LFFTHXs), especially when used as evaporators. The streamlined structure of pin fins helps to effectively remove condensate and defrost water. In this study, we co...
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MDPI AG
2024-08-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/15/9/1120 |
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| author | Qin Zhou Hongyan Wang Fuyuan Wu Shengfei Liu Huafeng Wei Guoqing Hu |
| author_facet | Qin Zhou Hongyan Wang Fuyuan Wu Shengfei Liu Huafeng Wei Guoqing Hu |
| author_sort | Qin Zhou |
| collection | DOAJ |
| description | Pin-fin and flat-tube heat exchangers (PFFTHXs) offer a promising alternative to traditional louvered-fin and flat-tube heat exchangers (LFFTHXs), especially when used as evaporators. The streamlined structure of pin fins helps to effectively remove condensate and defrost water. In this study, we conducted a numerical analysis of 60 different pin-fin configurations across three pin diameters to enhance heat transfer in PFFTHXs. Our investigation focused on how pin pitch affects both airflow and heat transfer efficiency. The results show that a closer pin pitch increases both the heat transfer rate per unit area and the pressure drop for a given airflow velocity. We evaluated the overall performance of these configurations using the heat transfer rate per unit frontal area obtained at equivalent fan power levels. The analysis identified optimal configurations for each pin diameter, with the 0.2 mm diameter configuration demonstrating the highest heat transfer efficiency—this was on par with louvered fins but used fewer resources. This makes it an ideal choice for evaporative applications in PFFTHXs. |
| format | Article |
| id | doaj-art-38c6ea18cbb044a8a33094817a199fd0 |
| institution | OA Journals |
| issn | 2072-666X |
| language | English |
| publishDate | 2024-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj-art-38c6ea18cbb044a8a33094817a199fd02025-08-20T01:55:41ZengMDPI AGMicromachines2072-666X2024-08-01159112010.3390/mi15091120Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat ExchangersQin Zhou0Hongyan Wang1Fuyuan Wu2Shengfei Liu3Huafeng Wei4Guoqing Hu5Department of Engineering Mechanics, State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, ChinaZhejiang Kangsheng Co., Ltd., Hangzhou 311700, ChinaZhejiang Kangsheng Co., Ltd., Hangzhou 311700, ChinaDepartment of Engineering Mechanics, State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, ChinaZhejiang Kangsheng Co., Ltd., Hangzhou 311700, ChinaDepartment of Engineering Mechanics, State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, ChinaPin-fin and flat-tube heat exchangers (PFFTHXs) offer a promising alternative to traditional louvered-fin and flat-tube heat exchangers (LFFTHXs), especially when used as evaporators. The streamlined structure of pin fins helps to effectively remove condensate and defrost water. In this study, we conducted a numerical analysis of 60 different pin-fin configurations across three pin diameters to enhance heat transfer in PFFTHXs. Our investigation focused on how pin pitch affects both airflow and heat transfer efficiency. The results show that a closer pin pitch increases both the heat transfer rate per unit area and the pressure drop for a given airflow velocity. We evaluated the overall performance of these configurations using the heat transfer rate per unit frontal area obtained at equivalent fan power levels. The analysis identified optimal configurations for each pin diameter, with the 0.2 mm diameter configuration demonstrating the highest heat transfer efficiency—this was on par with louvered fins but used fewer resources. This makes it an ideal choice for evaporative applications in PFFTHXs.https://www.mdpi.com/2072-666X/15/9/1120micro pin finpin pitchpin diameterheat transfer enhancementheat exchanger |
| spellingShingle | Qin Zhou Hongyan Wang Fuyuan Wu Shengfei Liu Huafeng Wei Guoqing Hu Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers Micromachines micro pin fin pin pitch pin diameter heat transfer enhancement heat exchanger |
| title | Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers |
| title_full | Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers |
| title_fullStr | Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers |
| title_full_unstemmed | Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers |
| title_short | Numerical Investigation of Enhanced Heat Transfer with Micro Pin Fins in Heat Exchangers |
| title_sort | numerical investigation of enhanced heat transfer with micro pin fins in heat exchangers |
| topic | micro pin fin pin pitch pin diameter heat transfer enhancement heat exchanger |
| url | https://www.mdpi.com/2072-666X/15/9/1120 |
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