کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4991803 | 1457116 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Coupled simulation of the combustion and fluid heating of a 300Â MW supercritical CO2 boiler
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
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چکیده انگلیسی
This paper presents a numerical simulation of the coupled heat transfer between combustion and fluid heating of a 300Â MW supercritical CO2 boiler. The results show that there are two peak temperature zones on each wall of the spiral wall heater, whose maximum temperature is about 900Â K. The maximum wall temperature of wall re-heater is about 35Â K lower than that of the spiral wall heater. Arranging a wall re-heater at the upper part of the furnace is beneficial to avoiding the overheating of tube walls. The heat transfer coefficients change mildly both in the spiral wall heater and the wall re-heater, which are different from those in traditional stream boilers. The heat transfer coefficient increases with the increase of S-CO2 fluid temperature, mainly because of the increasing of thermal conductivity due to temperature rise. The detailed results of this work are beneficial to a full understanding of the heat transfer process and optimizing design of a 300Â MWÂ S-CO2 boiler.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 113, 25 February 2017, Pages 259-267
Journal: Applied Thermal Engineering - Volume 113, 25 February 2017, Pages 259-267
نویسندگان
Yu Yang, Wengang Bai, Yueming Wang, Yifan Zhang, Hongzhi Li, Mingyu Yao, Haijun Wang,