Energy-exergy analysis of tunnel type glaze kiln used in porcelain firing

Abstract

The energy demand in Turkey is increasing continuously because of the fact that it is a developing economy. However, it has limited energy sources. As a result of these circumstances, energy efficiency projects are essential for industry and other energy consumption areas. This paper proposes energy recovery by analyzing energy and exergy in a porcelain tableware firing kiln, a ceramics industry branch. The actual data obtained from the measurements made on the kiln were used in the energy and exergy analysis calculations. The energy consumption of the glaze kiln has been calculated as 3868 kJ/s. The incoming energy is lost around 14.78% by the main exhaust flue gas and 28.58% by the cooling exhaust gas. The primary energy casualties are kiln walls and other losses. They are 43.36% and 38.9%, respectively. Finally, according to energy and exergy analyses, suggestions were made on the processes with high energy losses, and depreciation was made.