Influence Analysis of Convective Heat Transfer of Circular Tubes and Flat Plates in a Polar Environment

• Published in: Frontiers in energy research 2022-06, Vol.10
• Main Authors: Dongwei, Yu, Zhibing, Liu, Gang, Wu, Xueyang, Han, Guojun, Wang, Dayong, Zhang
• Format: Article
• Language: English
• Subjects: constant heat flux; convective heat transfer; experimental measurement; numerical simulation; polar region
• ISSN: 2296-598X; 2296-598X
• DOI: 10.3389/fenrg.2022.937343

Electric heating serves as a major cold-proof measure because engineering equipment often loses efficacy in harsh weather conditions in a polar environment. Because Convective heat transfer is the key issue to solve the cold-proof design, this paper analyzes convective heat transfer of tube and plate in the constant heat flow heating mode. According to fluent numerical simulation analysis with a wind speed of 0–40 m/s and a temperature of −40°C–0°C, both an increase in wind speed and a decrease in temperature would cause the growth of the convective heat transfer coefficient of circular tubes and flat plates, Wind speed displayed a more significant impact on convective heat transfer. In a low-temperature laboratory, a model experiment of convective heat transfer was carried out to validate the reliability of the numerical simulation. Last, a prediction model for convective heat transfer coefficient of circular tubes and flat plates in polar environment was developed using numerical and experimental data.