Parametric study on melting process of a shell-and-tube latent thermal energy storage under fluctuating thermal conditions
Parametric study on melting process of a shell-and-tube latent thermal energy storage under fluctuating thermal conditions
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脉动热工况下管壳式潜热储能熔化过程参数化研究
DOI：
10.1016/j.applthermaleng.2020.115898
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发表时间：
2020-11
影响因子：
6.4
通讯作者：
Xiaoli Yu
中科院分区：
文献类型：
--
作者：
Zhi Li;Yiji Lu;Rui Huang;Lei Wang;Ruicheng Jiang;Xiaonan Yu;Xiaoli Yu
太阳能、地热、工业过程和内燃机废热等热源的间歇性和波动性是最具挑战性的研究领域之一，目前限制了有机朗肯循环（ORC）技术等热回收系统的实施。利用相变材料（PCM）的潜热储能（LTES）是一种很有前途的解决方案，可以减轻热源的波动并将热回收系统维持在设计条件下。然而，熔化过程显著影响能量存储性能，以及在波动的热条件下LTES系统的设计和优化。在这项研究中，壳管式LTES单元的熔化过程中，正弦热源下，进行了数值研究，以考虑周期和振幅的影响。在此基础上，模拟了纳米颗粒对相变材料导热系数的影响，并分析了正弦热源条件下相变材料的传热系数对相变材料熔化过程的影响。通过对导热系数和传热系数的参数研究，探讨了这些参数对正弦热源周期和幅值对LTES熔化过程的影响。结果表明，低温热源的总熔化时间和蓄热能力总体呈下降趋势，而波动热源的周期和振幅则呈增大趋势。
The intermittent and fluctuating nature of thermal sources such as solar, geothermal, industrial processes and waste heat from internal combustion engines is one of the most challenging research areas and currently limits the implementation of heat recovery systems such as Organic Rankine Cycle (ORC) technology. Latent Thermal Energy Storage (LTES) using Phase Change Material (PCM) is a promising solution to mitigate fluctuations of thermal sources and maintaining the heat recovery systems under designed conditions. However, the melting process significantly affects the energy storage performance, as well as the design and optimisation of the LTES system under fluctuating thermal conditions. In this study, the melting process of a shell-and-tube LTES unit, under a sinusoidal heat source, is numerically investigated in order to consider the effects of period and amplitude. Then, the effects of PCM thermal conductivity, with and without nanoparticles, were simulated and the heat transfer coefficient of sinusoidal heat source on the melting process is separately analysed under the sinusoidal heat source condition. The parametric study of thermal conductivity and heat transfer coefficient is conducted to evaluate whether these parameters affect the period and amplitude of sinusoidal heat sources on the melting process of LTES. The results indicate an overall trend of the total melting time and heat storage capacity of LTES decreasing whilst there is an increase of period and amplitude of the fluctuating heat source.
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影响因子：
6.7
作者：
Zhuo Li;Zhi-Gen Wu
通讯作者：
Zhuo Li;Zhi-Gen Wu
影响因子：
9
作者：
G. Shu;Mingru Zhao;H. Tian;Haiqiao Wei;Xingyu Liang;Yongzhan Huo;W. Zhu
通讯作者：
G. Shu;Mingru Zhao;H. Tian;Haiqiao Wei;Xingyu Liang;Yongzhan Huo;W. Zhu
影响因子：
10.4
作者：
F. D. Magro;A. Meneghetti;G. Nardin;S. Savino
通讯作者：
F. D. Magro;A. Meneghetti;G. Nardin;S. Savino
DOI：
10.1016/j.ijheatmasstransfer.2009.06.027
发表时间：
2009-10-01
影响因子：
5.2
作者：
Vajjha, Ravikanth S.;Das, Debendra K.
通讯作者：
Das, Debendra K.
影响因子：
8.7
作者：
Armin Ebrahimi;M. Hosseini;A. Ranjbar;M. Rahimi;R. Bahrampoury
通讯作者：
Armin Ebrahimi;M. Hosseini;A. Ranjbar;M. Rahimi;R. Bahrampoury