کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
245379 501994 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Energy and exergy analyses of energy consumptions in the industrial sector in South Africa
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Energy and exergy analyses of energy consumptions in the industrial sector in South Africa
چکیده انگلیسی

The energy-utilization over a 10-year period (1994–2003) has been analysed for the South African industrial sector, which consumes more primary energy than any other sector of the economy. Four principal sub-sectors, namely iron and steel, chemical and petrochemical, mining and quarrying, and non-ferrous metals/non-metallic minerals were considered in this study. Primary-energy utilization data were used to calculate the weighted mean energy and exergy efficiencies for the sub-sectors and then overall values for the industrial sector were obtained. The results indicate that exergy efficiency is considerably lower than energy efficiency in all the sub-sectors, particularly in mining and quarrying processes, for which the values were approximately 83% and 16%, respectively. The performance of exergy utilization in the industrial sector can be improved by introducing various conservation strategies. Results from this study were compared with those for other countries.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 84, Issue 10, October 2007, Pages 1056–1067
نویسندگان
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