کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
149061 | 456426 | 2013 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Infrared imaging of temperature profiles in microreactors for fast and exothermic reactions Infrared imaging of temperature profiles in microreactors for fast and exothermic reactions](/preview/png/149061.png)
Though microreactors provide high heat transfer rates, temperature profiles are formed in case of fast and highly exothermic reactions. A method based on non-intrusive infrared thermometry has been developed to track these profiles quantitatively with a resolution of 250 data points/cm2 and a precision of 1 °C. By placing the microreactor at a pressure of 10−2 mbar, convective heat losses are efficiently suppressed which assures well defined boundaries and reproducible results. The temperature profiles of the fast and exothermic hydrolysis of tetraethoxysilane were measured inside a microcapillary at different flow rates via infrared transparent window. In the reactor provided with a cooling system, the heat transfer coefficient was determined by thermal imaging for different operating conditions. The data obtained are in good agreement with the values reported in literature.
► Non-intrusive infrared thermometry is developed for quantification of temperature profiles in a microreactor.
► Method allows a resolution of 250 data points/cm2 and precision of 1 °C.
► Microcapillary with highly exothermic and fast hydrolysis of tetraethoxysilane was characterized.
► Location and the magnitude of a hot spot was identified.
Journal: Chemical Engineering Journal - Volume 214, 1 January 2013, Pages 97–105