کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7054505 | 1458019 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical study on the shell-side flow and heat transfer of superheated vapor flow in spiral wound heat exchanger under rolling working conditions
ترجمه فارسی عنوان
بررسی عددی جریان پوسته و انتقال حرارت جریان بخار سوپر تبخیر در مبدل حرارتی مارپیچی زخم تحت شرایط کاری نورد
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In order to explore the shell-side flow and heat transfer characteristics for spiral wound heat exchanger (SWHE) in floating liquefied natural gas (FLNG), a model was established to simulate the flow and heat transfer of shell-side superheated vapor flow under rolling working conditions. The effects of rolling parameters and working parameters were investigated. By comparing, the deviations between simulation results and experimental data were generally within ±10%. Under static working conditions, both frictional pressure drop gradient and heat transfer coefficient increased with the increasing mass flux, which were consistent with the predictions of calculation correlations. After that, an improved heat transfer correlation was proposed with an error of ±5%. Meanwhile, rolling motions can affect the shell-side flow and heat transfer characteristics of superheated vapor flow and lead them to show obvious periodicity. The influence of rolling period was smaller than that of rolling amplitude, and 90% of the working conditions in FLNG SWHE can lead to the enhancement of heat transfer from â0.5% to 2.6%. These results can provide some instructions in the design and efficient running for FLNG SWHE.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 121, June 2018, Pages 691-702
Journal: International Journal of Heat and Mass Transfer - Volume 121, June 2018, Pages 691-702
نویسندگان
Yan Ren, Weihua Cai, Jie Chen, Laiyun Lu, Yiqiang Jiang,