کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
657937 1458075 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance prediction of a fin-and-tube heat exchanger considering air-flow reduction due to the frost accumulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Performance prediction of a fin-and-tube heat exchanger considering air-flow reduction due to the frost accumulation
چکیده انگلیسی

We describe a numerical model for predicting performance of fin-and-tube heat exchangers for air-source heat pumps that takes into account airflow reduction due to the accumulation of frost. The thermal resistances between the air, frost, and refrigerant are analyzed to evaluate the effects of frost growth. We compare the results of our model with experimental data for a fin-and-tube heat exchanger and with the results of existing models. We conduct experiments to obtain the correlations between the pressure drop and the Reynolds number, the temperatures of the air and the cold surface, and the humidity. The simulated heat-transfer rates and frost mass agreed with the experimental data to within 7% and 9%, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 67, December 2013, Pages 225–233
نویسندگان
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