کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
764850 897008 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The log mean heat transfer rate method of heat exchanger considering the influence of heat radiation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
The log mean heat transfer rate method of heat exchanger considering the influence of heat radiation
چکیده انگلیسی

The log mean temperature difference (LMTD) method is conventionally used to calculate the total heat transfer rate of heat exchangers. Because the heat radiation equation contains the 4th order exponential of temperature which is very complicate in calculations, thus LMTD method neglects the influence of heat radiation. From the recent investigation of a circular duct in some practical situations, it is found that even in the situation of the temperature difference between outer duct surface and surrounding is low to 1 °C, the heat radiation effect can not be ignored in the situations of lower ambient convective heat coefficient and greater surface emissivities. In this investigation, the log mean heat transfer rate (LMHTR) method which considering the influence of heat radiation, is developed to calculate the total heat transfer rate of heat exchangers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 50, Issue 11, November 2009, Pages 2693–2698
نویسندگان
, , ,