Performance analysis and comparison of different corrugated structures and a novel alternative elliptical twisted tube in supercritical CO2 tower solar receivers

Yun Liu, Yue Dong, Tao Li and Chuan-Zhi Zhang

Renewable Energy, 2022, vol. 199, issue C, 1523-1533

Abstract: The concentrated solar power generation system with supercritical CO2 as working medium has high cycle efficiency, which can effectively reduce the volume of heat exchange equipment and reduce the investment cost. However, there is no systematic comparative study on the effect of tube structure on the performance of supercritical CO2, but the structure of tubes has a significant effect on the heat transfer performance of supercritical CO2, so it is necessary to study it. In this contribution, we firstly analyze the effects of different structures of tubes on the performance of supercritical CO2. Then, we design a novel alternative elliptical twisted tube. Finally, we further analyze the effects of the novel tube on the heat transfer performance of supercritical CO2 by using the field synergy principle. The results show that the novel alternative elliptical twisted tube is the best structure. When the mass flow is 0.08 kg s−1, the heat transfer coefficient of horizontal arrangement is 1625 W m−2 K−1, which is 107% higher than that of horizontal tube. And the heat transfer coefficient of vertical arrangement is 1620 W m−2 K−1, which is 116% higher than that of vertical tube. These results will provide a guidance for the structural optimization of practical receivers.

Keywords: Supercritical CO2; Solar tower receiver; Novel alternative elliptical twisted tube; Field synergy principle; Non-uniform heat flux (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148122014458
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:199:y:2022:i:c:p:1523-1533

DOI: 10.1016/j.renene.2022.09.086

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().