کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5013372 1462835 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heat transfer improvement in a double pipe heat exchanger by means of perforated turbulators
ترجمه فارسی عنوان
بهبود انتقال حرارت در مبدل حرارتی دو لوله با استفاده از توربولرهای سوراخدار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
Forced convective turbulent hydrothermal analysis in a double pipe heat exchanger is presented experimentally. Perforated turbulators have been utilized in annulus region. Hot water makes the cold air in outer tube warmer. Various amounts of pitch ratio, open area ratio and Reynolds number are considered. Correlations for Nusselt number, thermal performance and Darcy friction factor are examined. NSGA II is utilized to optimize the design. Physical phenomena are shown by means of FVM. Results reveal that thermal performance enhances with augment of open area ratio. Temperature gradient reduces with augment of pitch ratio. The maximum value of thermal performance obtained at η = 1.59 which is occurred for Re=6000,λ=0.07,PR=1.06.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 127, 1 November 2016, Pages 112-123
نویسندگان
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