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Experimental Study on Heat Transfer Enhancement of Phase Change Material using Embedded Oscillating Heat Pipe for Thermal Energy Storage
ISIJ International ( IF 1.8 ) Pub Date : 2020-10-20 , DOI: 10.2355/isijinternational.isijint-2019-507
Chenzhen Liu 1, 2 , Zhengyuan Ma 1 , Ruicheng Jiang 1 , Jie Qu 1 , Zhonghao Rao 1
Affiliation  

Phase change materials (PCM) have great application potential in the field of thermal energy storage (TES). However, most PCM have low thermal conductivity, which limits the TES efficiency. In this paper, a novel method employing oscillating heat pipe (OHP) to enhance the heat transfer performance of latent heat TES system was investigated. OHPs with different turns, inner dimeters and wall thickness were designed, manufactured and tested. Thermal performance of TES system enhanced by embedded OHPs were tested. The influence of turn number, inner dimeters and wall thickness of OHPs on the heat transfer performance of paraffin were investigated. The results show that the prepared OHPs have high heat transfer performance. The time of the thermal storage process for the paraffin based TES coupled with OHP (Di=3 mm, Do=4 mm, 4 turns) is 38.45% shorter than that without OHP. Therefore, the OHPs can effectively improve the heat transfer rate inside paraffin in the thermal storage process.



中文翻译:

嵌入式振荡热管蓄热增强相变材料传热的实验研究

相变材料(PCM)在热能存储(TES)领域具有巨大的应用潜力。但是,大多数PCM具有较低的导热率,这限制了TES效率。本文研究了一种利用振荡热管(OHP)来提高潜热TES系统的传热性能的新方法。设计,制造和测试了具有不同匝数,内径和壁厚的OHP。测试了嵌入式OHP增强的TES系统的热性能。研究了OHP的转数,内径和壁厚对石蜡传热性能的影响。结果表明,所制备的OHP具有较高的传热性能。基于石蜡的TES与OHP(Di = 3 mm,Do = 4 mm,4圈)结合的储热过程时间为38。比没有OHP的短45%。因此,OHPs可有效提高储热过程中石蜡内部的传热率。

更新日期:2020-10-28
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