ENERGY AND EXERGY ANALYSES OF SELECTED TURKISH INDUSTRIES

Abstract

Analyses of the Turkish food, textile and cement sectors reveal that the most efficient sectors are different on energy and exergy bases. A quantitative break-down of exergy losses with respect to process heat, space and water heating, motive power, and illumination requirements indicates that exergy losses are mainly associated with space-, water- and process-heating. In the food and textile sectors, heating requirements with end-use temperatures below 200-degrees-C account for more than 90% of the total thermal energy demand. In the cement sector, however, low-temperature heat demand is almost negligible. Hence, measures to decrease the first-and second-law inefficiencies in these sectors may be drastically different.