کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7058664 1458077 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heat transfer measurement during dropwise condensation using micro/nano-scale porous surface
ترجمه فارسی عنوان
اندازه گیری انتقال حرارت در محدوده قطره ای با استفاده از سطح متخلخل میکرو / نانو مقیاس
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Unique micro/nano-scale porous surfaces were fabricated on the surfaces of steam condensers to promote dropwise condensation which can exhibit higher heat transfer rate than that of filmwise condensation. Steam condensation tests were conducted to evaluate heat transfer performance of the fabricated micro/nano-scale porous surfaces. The micro/nano-scale porous surfaces were prepared using a self-assembly technique, polymer based thin coatings, and a surface etchings technique. The resulting surface morphologies and the wetting characteristics were investigated using SEM and the liquid contact angle measurements to quantify important parameters for enhancing the dropwise condensation. From visual observations, it was deduced that the micro/nano-scale porous surfaces can effectively initiate dropwise condensation by generating smaller condensates and limiting the growth of 'large' condensate drops and by improving surface renewal rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 65, October 2013, Pages 619-626
نویسندگان
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