期刊
CASE STUDIES IN THERMAL ENGINEERING
卷 28, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.csite.2021.101466
关键词
Swirl energy-saving burner; Thermal efficiency; Heat conversion efficiency; CFD
资金
- Ubon Ratchathani University [2564]
This study investigated the swirling flow in household LPG burners and found that introducing swirling flow can increase thermal efficiency. Experimental and numerical tests were conducted to compare a newly invented swirling flame energy-saving burner (SEB) with a typical energy-saving burner (EB), showing that the SEB had higher heat conversion efficiency and thermal efficiency.
This study investigated a swirling flow in household LPG burners and its effects on thermal efficiency enhancement. Modified from a typical energy-saving burner (EB), a newly invented swirling flame energy-saving burner (SEB) was built and tested both experimentally and numerically. Computational Fluid Dynamics (CFD) simulations were employed to investigate the flow inside the SEB with an inclined angle of 50 degrees and a swirl angle of 15 degrees as well as the flow inside the EB. The computational results were used to calculate the heat conversion efficiencies, which were then compared to the experimental values obtained from the water boiling test (DIN EN 203-2 standard). Additionally, the simulations provide data on the combustion temperature, the turbulence intensity, and the secondary air flow rate. This detailed information clearly confirms that the swirling flow does increase the maximum combustion temperature and the net heat flux into the vessel, directly enhancing the heat conversion efficiency and thus increasing the thermal efficiency. According to the simulations, the heat conversion efficiency of the SEB is around 3.44% greater than that of the EB, while the experiments show that the SEB gives approximately 2.75% higher thermal efficiency than that of the EB. The future expectation is that the heat conversion efficiency can be used to predict the increase in thermal efficiency. With this method, the commercial design of the energy-saving burner can be improved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据