| Effect of evaporating-condensing length ratio and heat flux on starting and operating characteristic of pulsating heat pipe | |
Shi, Weixiu; Li, Min ; Chen, Hongdi; Pan LS(潘利生)
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| Corresponding Author | Pan, Lisheng(panlisheng@imech.ac.cn) |
| Source Publication | APPLIED THERMAL ENGINEERING
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| 2024-06-01 | |
| Volume | 246Pages:8 |
| ISSN | 1359-4311 |
| Abstract | Pulsating heat pipe is an efficient heat transfer technology applied in the fields of electronic cooling and energy utilization. There are many factors affecting the starting and operating characteristic, such as structure, working fluid, filling ratio and so on. In order to investigate the effect of heating length and heat flux, a series experiment was carried out on a closed loop pulsating heat pipe with six different length ratios of 0.3, 0.4, 0.6, 0.8, 1.0, 1.2. The results show that the length ratio and heat flux jointly affect the characteristic of PHP. The starting process of PHP experiences no pulsating, unstable pulsating and then stable pulsating at different length ratios with heat flux increasing. Starting heat flux drops firstly and then tends to be flat and stable near a certain value with increasing evaporating-condensing length ratio. The continuous increase of heating flux can lead to the transition of PHP from stable operating to unstable operating, and the transition occurs on the pulsating heat pipe with length ratio of 0.4 on the condition of heat flux increasing to 7.64 W/cm2. Working heat flux region of pulsating heat pipes varies with the variation of length ratios. The higher heat flux area is for the pulsating heat pipe with smaller length ratio, but the lower heat flux area is better for the PHP with larger length ratio. The optimal operating characteristic was obtained by pulsating heat pipe with length ratio of 0.8, and the thermal resistance reach to the lowest of 2.5 degrees C/W at heat flux of about 4.5 W/cm2. |
| Keyword | Evaporating -condensing length ratio Heat flux Starting Operating characteristic Pulsating heat pipe |
| DOI | 10.1016/j.applthermaleng.2024.122963 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001223387800001 |
| WOS Keyword | THERMAL PERFORMANCE ; PREDICT |
| WOS Research Area | Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics |
| Funding Project | National Natural Science Foundation of China[52000008] ; [KM202310016008] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Pan, Lisheng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95322 |
| Collection | 高温气体动力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Shi, Weixiu,Li, Min,Chen, Hongdi,et al. Effect of evaporating-condensing length ratio and heat flux on starting and operating characteristic of pulsating heat pipe[J]. APPLIED THERMAL ENGINEERING,2024,246:8. |
| APA | Shi, Weixiu,Li, Min,Chen, Hongdi,&潘利生.(2024).Effect of evaporating-condensing length ratio and heat flux on starting and operating characteristic of pulsating heat pipe.APPLIED THERMAL ENGINEERING,246,8. |
| MLA | Shi, Weixiu,et al."Effect of evaporating-condensing length ratio and heat flux on starting and operating characteristic of pulsating heat pipe".APPLIED THERMAL ENGINEERING 246(2024):8. |
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