کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
662045 1458160 2007 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Convective mass transfer coefficient for a hydrodynamically developed airflow in a short rectangular duct
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Convective mass transfer coefficient for a hydrodynamically developed airflow in a short rectangular duct
چکیده انگلیسی

In this paper, experiments are performed to determine the convective mass transfer coefficient for evaporation in a horizontal rectangular duct with an aspect ratio of 14.5:1. In the test facility, a short pan of water forms the lower panel of a long duct where a hydrodynamically fully developed laminar or turbulent airflow passes over the surface of the water. The measured convective mass transfer coefficients have uncertainties that are typically less than ±10% and are presented for Reynolds numbers (Re) between 570 and 8100, Rayleigh numbers (Ra) between 6300 and 83,000, inverse Graetz numbers (Gz) between 0.003 and 0.04, and operating conditions factors (H∗) between −3.6 and −1.4. The measured convective mass transfer coefficients are found to increase as Re, Ra, Gz and H∗ increase and these effects are included in the Sherwood number correlations presented in this paper, which summarize the experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 11–12, June 2007, Pages 2376–2393
نویسندگان
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