Modelling of a Dyeing Process and its Energy Consumption Analysis

Abstract

The dyeing industry is a typical energy consuming industry in which a very large amount of heat and water is consumed annually. The ratio of energy cost to overall manufacturing cost in 1982, for example, was as high as 18%.The dyeing industry, therefore, is one of the industries which urgently require some effective measures for saving energy.In the dyeing process, energy consumption is greatly influenced not only by the production rate, but also by the temperature of processing water, which is consumed in large volumes, as well as by counter measures for saving energy such as heat recovery.In this study, a mathematical model of dyeing process is derived from the enthalpy balance equation using the observed data. Then, the effect of water temperature and production rate on the basic unit of energy consumption is analysed using the developed mathematical model.