Investigation of an Boiler Chimney Heat Recuperation Association Alongside Fouling

Abstract

ABSTRACT
An initial design of chimney heat recovery heat exchanger was provided. The design had a
completely fabricated exchange core but an incomplete ducting system .
This report is based on the work undertaken to complete and test the gas to gas heat recovery
system. This system was specifically designed for boiler chimney and therefore the systems
ducting was designed to conform to the general boiler stack.
In the completion of the design, the major factor to consider was to design against fouling. The system was therefore designed with means of reducing fouling such as provision for easily replaceable particulate filter and quick washing system.The project was hence done in the following manner. Completing of the fabrication. Research on ways of minimizing fouling . Incorporating the ways arrived at in 1 above into the system design.. Testing of the model under forced convection condition. The gases from a furnace were used to simulate industrial flue gases. The performance of the model was used to project the optimum of prototype. he aim of this project was to recover heat lost through flue gases exhaust at the chimney stage taking a keen consideration of the effect of fouling especially at the core of the heat exchanger. Some research was done and the exchanger system designed and fabricated though completion. It was nevertheless tested specifically to determine its heat exchange effectiveness. However critical factors such as fouling were not keenly observed. The small plate spacing of the exchange core will allow for a substantial heat recovery. This obviously means the core will undergo fouling at a higher rate as compared to boiler tubes. This makes the exchanger to require more frequent maintenance than the normal boiler maintenance