International Sugar Journal

Initial study on solar process heat for South African sugar mills* [Full subscriber]

Abstract The South African (SA) sugar milling industry is seeking to improve energy efficiency and cost-competitiveness. On-site solar thermal (ST) systems have the potential to reduce coal consumption in the boiler and to partly replace bagasse as a heating fuel. This paper, based on the heat and mass balance of a representative sugar mill with limited energy efficiency measures, identifies the most promising solar heat integration points and pre-ranks them according to their potential energetic and economic benefits. Hydraulic schemes to integrate solar heat into the processes are presented, system operation is discussed, and solar gains are calculated. The investigated…

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