Community Research and Development Information Service - CORDIS

Effects of fouling on the efficiency of heat exchangers in lignite utility boilers

Ash deposition on the tubes of heat exchangers in lignite utility boilers significantly reduces their operating efficiency. An important engineering design tool has been developed in this project to evaluate the effects of this particle deposition. This will lead to the development of new, energy efficient heat exchanger designs.

One of the main goals in the development of heat exchangers is to produce the highest thermal efficiency with minimum cost. Currently, heat transfer efficiency is significantly reduced by a tendency towards fouling on the heat exchanger tubes in lignite boiler heat exchangers. The aim of this project was to give an improved understanding of the mechanism of ash deposition on the surface of heat exchanger tubes in lignite utility boilers. The effects of fouling on heat exchanger efficiency were also evaluated, with the aim of identifying means of reducing the adverse effects of this fouling. Scientific tools were applied to identify the causes and establish solutions.

Reported by

National Technical University of Athens
Heroon Polytechniou 5 zografou
15700 Athens
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