Exergy analysis of a novel multi-stage latent heat storage device based on uniformity of temperature differences fields
Exergy analysis of a novel multi-stage latent heat storage device based on uniformity of temperature differences fields
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基于温差场均匀性的新型多级潜热储存装置火用分析
DOI：
10.1016/j.energy.2021.119884
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发表时间：
2021-04
期刊：
影响因子：
9
通讯作者：
Siqi Wang
中科院分区：
文献类型：
--
作者：
Jiaqi Li;Rang Tu;Mengdan Liu;Siqi Wang
For shell-and-tube type latent heat storage devices, heat transfer rate reduces with time due to the increasement of ineffective heat transfer area. To solve this problem, a latent heat storage device, which is made of ‘replaceable multi-stage’ phase change plates (PCPs), is proposed in this paper. When one PCP has no heating ability, it is replaced by a new PCP. Effects of the ‘replaceable multi-stage’ configuration are evaluated using unmatched coefficient, which indicates uniformity of temperature differences distribution, and exergy destruction, which is influenced by the unmatched coefficient. Two replacement methods are numerically studied and based on the recommended method, effects of stage number and length of the device on heat transfer performances are investigated. It is found that, with length of the device being fixed, larger stage number results in smaller unmatched coefficient and lower exergy destruction. Therefore, higher and more stable supply air temperature can be realized. However, more frequent replacement actions are required if stage number is increased. For space heating applications, a 2-stage heating unit with length of each plate being 30 cm is recommended, which can heat indoor air from 20 °C to 29.5 °C for 8 h.
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DOI：
10.1016/j.ijrefrig.2020.04.028
发表时间：
2020-09
期刊：
International Journal of Refrigeration-revue Internationale Du Froid
影响因子：
--
作者：
Pooria Pirdavari;S. Hossainpour
通讯作者：
Pooria Pirdavari;S. Hossainpour
影响因子：
6.4
作者：
Y. Qiao;T. Cao;J. Muehlbauer;Y. Hwang;R. Radermacher
通讯作者：
Y. Qiao;T. Cao;J. Muehlbauer;Y. Hwang;R. Radermacher
冷凝与液体除湿理想效率分析比较
影响因子：
6.7
作者：
Lun Zhang;Xiaohua Liu;Yi Jiang
通讯作者：
Yi Jiang
影响因子：
11.2
作者：
Pizzolato, Alberto;Sharma, Ashesh;Verda, Vittorio
通讯作者：
Verda, Vittorio
利用㶲的干燥轮除湿和冷却系统的不可逆过程和性能改进
影响因子：
11.2
作者：
Tu, Rang;Liu, Xiao-Hua;Jiang, Yi
通讯作者：
Jiang, Yi