An explicit equation leading to a method for improving furnace efficiency is presented. This equation is dimensionless and can be applied to furnaces of any size and fuel type for the purposes of comparison. The implications for current furnace design are discussed. Currently the technique most commonly used to reduce energy consumption in galvanizing furnaces is to increase burner turndown. This is shown by the analysis presented here actually to worsen the thermal efficiency of the furnace, particularly at low levels of capacity utilization. Galvanizing furnaces are different to many furnaces used within industry, as a quantity of material (in this case zinc) is kept molten within the furnace at all times, even outside production periods. The dimensionless analysis can, however, be applied to furnaces with the same operational function as a galvanizing furnace, such as some furnaces utilized within the glass industry.
|Number of pages||9|
|Journal||Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering|
|Publication status||Published - Nov 2004|
Copyright 2008 Elsevier B.V., All rights reserved.
- Capacity utilization
- Dimensional analysis
- Energy efficiency
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering