کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5451291 | 1513072 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical thermometry for high temperature multiphase environments under high-flux irradiation
ترجمه فارسی عنوان
ترمومتری نوری برای محیط های چند مرحلهای با درجه حرارت بالا تحت تابش پرتو
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کلمات کلیدی
اشعه ماوراء بنفش، جریان چند مرحلهای، درجه حرارت، تشخیص لیزر،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
A non-intrusive optical method to measure gas phase temperature in strongly scattering multiphase environments under high-flux, broad-band irradiation, relevant to conditions in high temperature solar reactors was developed and demonstrated. The high-flux irradiation with a peak flux of 450Â kW/m2 was provided by a 6Â kW metal-halide lamp coupled with a reflector and two concentrators. An ethylene/air diffusion flame, which contains fine soot particles, was employed to provide a high temperature reacting flow (approximately 1800Â K) with strong optical interference from nano particles having a peak soot volume fractions of â¼16Â ppm (with irradiation) under conditions of relevance to solar reactors. Under this environment, the proposed laser-based thermometry technique, line-wise two-line atomic fluorescence (TLAF) has been successfully demonstrated to measure flame temperature with good spatial resolution of â¼1Â mm. It was found that the measurement accuracy in the presence of particle and the high-flux external radiation is 65Â K at a typical flame temperature of â¼1800Â K, while the measurement precision is 38Â K. Results reveal that the presence of high-flux irradiation increases the flame temperature by typically 50-100Â K. This paper presents a thermometry technique that is suitable for temperature measurement within solar reactors, particularly in hybrid solar-thermal receiver-combustor systems. The experimental setup, measurement methodology and data processing are discussed, followed by the temperature measurements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 146, April 2017, Pages 191-198
Journal: Solar Energy - Volume 146, April 2017, Pages 191-198
نویسندگان
Dahe Gu, Zhiwei Sun, Graham J. Nathan, Xue Dong, Bassam B. Dally, Paul R. Medwell, Zeyad T. Alwahabi,