Entropy Analysis About The Boiler Of Power Plant

The thesis has analysed the process of industrial production by using the theory of entropy, the concept of entropy comes from physics., but with the rapid development of science and technology, the definition of entropy was beyond the scope of physics. The property, function and effect of entropy, as well as its uses in other subjects has provided the theoretic support for discussing the problem of industrial production.As it is well known to us, the question of energy sources is a significant question for discussion that people all along focus attention upon, and energy crisis enhances people's energy-saving consciousness. We must put the reasonable use of energy on an important station, except to study and open up all kinds of new energy. It is highly important do energy-saving work of energy-consuming equipment. Boiler is a primary energy-consuming equipment in power plant. Therefore,exergy analysis of boiler in power plant has a significant meaning.Presently, the method of heat balance is widely used in boiler in power plant, but it can only analyses the status of using energy from the quantity of energy, the method of entropy analysis to exactly open out the heat-using status of boiler comes into use, and it analyses the status of using energy from the quantity and quality of energy. Compared with the method of heat balance, the method of exergy analysis not only reflects external losses of boiler in power plant, for example, waste heat loss and external heat losses, but also opens out inner losses in the course of energy conversion, for instance, nonreversible losses. Furthermore the method of entropy analysis may perfectly analyse the status of using energy of all kinds of boiler surface. Accordingly, the method of exergy analysis may perfectly and concretely weigh perfect thermodynamic degree, and exactly open out the tache and process of maximal losses, and offer the object and countermeasure for saving energy.This thesis used the thermodynamic theories, analyse the entropy increase of industry system (the boiler in power plant), revealed the state of energy use in industry production, as well as compared the different stations, this was aimed at making entropy increae minimum, so that, the utilization rate would be rased, and waste and pollution would be decreased. besides, this paper made a study on the entropy index of the synthetical effect of industrial production system.