Open Access iconOpen Access

ARTICLE

crossmark

Effect of Non-Convective Zone Thickness on Thermal Efficiency of Salt Gradient Solar Ponds

Nan Li1, Ruiyang Xu1, Caihong Zhang1,*, Guoping Wu2

1 School of Vehicles and Energy, Yanshan University, Qinhuangdao, 066004, China
2 Architecture Department, Shijiazhuang Institute of Railway Technology, Shijiazhuang, 050541, China

* Corresponding Author: Caihong Zhang. Email: email

Energy Engineering 2021, 118(4), 1185-1195. https://doi.org/10.32604/EE.2021.014741

Abstract

An improved radiation transmission and thermal efficiency model for solar ponds has been proposed based on both the Hull Model and Wang/Seyed-Yagoobi Model in this paper. The new model is more accurate to actual measured conditions because multiple reflections and turbidity effects are included. Absorption penetration, thermal conductivity loss and thermal efficiency under different Non-Convective Zone thicknesses are numerically analyzed and thoroughly discussed. The results show that ΔT/I0 plays a critical role for the thermal efficiency of solar pond. Furthermore, it is found through calculation that there is an optimum thickness of the Non-Convective Zone. When the Non-Convective Zone thickness is less than this critical threshold, both temperature and thermal efficiency are decreased with increasing turbidity. However, when the Non-Convective Zone thickness is greater than this critical threshold, the increasing turbidity within a certain range will be beneficial to improve the thermal efficiency of solar pond. In addition, optimum Non-Convective Zone thickness is also related to the temperature, turbidity, salinity variation and bottom reflectivity.

Keywords


Cite This Article

Li, N., Xu, R., Zhang, C., Wu, G. (2021). Effect of Non-Convective Zone Thickness on Thermal Efficiency of Salt Gradient Solar Ponds. Energy Engineering, 118(4), 1185–1195. https://doi.org/10.32604/EE.2021.014741



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1590

    View

  • 951

    Download

  • 0

    Like

Share Link