A New cross-flow tube bundle heat exchanger with staggered hot and cold tubes for thermophoretic deposition of submicron aerosol particles

Chih Liang Chien, Shih Hsuan Huang, Chuen-Tinn Tsai*

*此作品的通信作者

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

A new tube cross-flow bundle heat exchanger has been designed and tested for thermophoretic deposition of submicron aerosol particles. The present design has five columns of hot and cold square tubes, respectively, arranged in a staggered manner to maintain a nearly constant temperature gradient in the direction of the aerosol flow. Each column has four tubes of 4 mm 4 mm in cross section and the gap between the tube surfaces is 0.5 mm. The precipitator was tested experimentally using monodisperse NaCl test particles ranging from 38 to 397 nm in diameter at the aerosol flow rate of 0.6 and 1.2 L/min, respectively, at different temperature gradients. Results showed that the thermophoretic deposition efficiency increased with decreasing aerosol flow rate and increasing temperature gradient with the maximum thermophoretic deposition efficiency occurred at the aerosol flow rate of 0.6 L/min. The effect of inlet temperature of the aerosol flow on the efficiency was also tested and showed increasing inlet temperature increased the deposition efficiency. Numerical simulation was further conducted to validate the experimental data and good agreement was obtained. An empirical equation was also validated to facilitate the design and scale-up of the precipitator.

原文English
頁(從 - 到)1153-1163
頁數11
期刊Aerosol Science and Technology
43
發行號12
DOIs
出版狀態Published - 2009

指紋

深入研究「A New cross-flow tube bundle heat exchanger with staggered hot and cold tubes for thermophoretic deposition of submicron aerosol particles」主題。共同形成了獨特的指紋。

引用此