Energy and exergy analyses of energy consumptions in the industrial sector in South Africa

M. T. Oladiran, J. P. Meyer

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1056-1067
Number of pages12
JournalApplied Energy
Volume84
Issue number10
DOIs
Publication statusPublished - Jan 1 2007

Fingerprint

exergy
Exergy
Quarrying
quarrying
Energy utilization
energy
Nonferrous metals
energy efficiency
Petrochemicals
Energy efficiency
Conservation
Minerals
steel
Iron
iron
Steel
Africa
energy consumption
energy utilisation

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Energy(all)

Cite this

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Energy and exergy analyses of energy consumptions in the industrial sector in South Africa. / Oladiran, M. T.; Meyer, J. P.

In: Applied Energy, Vol. 84, No. 10, 01.01.2007, p. 1056-1067.

Research output: Contribution to journalArticle

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