A research on exergy consumption and potential of total CO2 emission in the Turkish cement sector

Abstract In this study, exergetic efficiency of Turkish cement production and CO 2 emissions caused by the sector due to exergetic losses and environmental effects are examined, considering the clinker production between 1999 and 2007. As a first step, exergy analyses based on dead state temperature and production data of clinker are carried out according to the second law of thermodynamics. Consequently, CO 2 emissions of the clinker production according to exergy losses, improvement and anergy potentials are determined. Exergy efficiency of the kiln and exergetic improvement potential are found as 43.04% and 123.29 × 10 6  GJ/h respectively on average. In this system, CO 2 emissions caused by exergetic losses are calculated as 75.18 × 10 6  kg/h, 25.06 × 10 6  kg/h and 81.45 × 10 6  kg/h respectively on average for the coal mixture, natural gas and fuel-oil. At the end of the study, the present technique is suggested as a useful tool to improve energy policies and provide energy conservation measures, especially in this type of industrial processes.