Open AccessSimulation of wood biomass combustion in hot water boiler
Author(s) -
Ivana Klačková,
Ivan Zajačko,
Richard Lenhard,
И. И. Грицук,
Dariusz Więcek
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/776/1/012033
Subject(s) - flue gas , boiler (water heating) , waste management , combustion , combustion chamber , heat exchanger , environmental science , heat transfer , heat recovery ventilation , nuclear engineering , engineering , chemistry , mechanical engineering , mechanics , physics , organic chemistry
Calculation methods based on finite volume methods (CFD method) have proven to be very useful in optimizing (efficiency, emission) heat sources for wood burning. Such heat sources also include gasification hot-water boilers for the combustion of dry wood. One of the important parts of the entire process of converting the primary energy contained in the fuel to the transfer of heat to the heat carrier is the gasification of the fuel in the feed chamber and the subsequent burning of wood gas. The paper presents CFD simulation of wood gasification process in the filling chamber and subsequent burning of wood gas on a model heat source. As a model heat source, was selected a hot-water boiler with lower fuel firing with a flue gas-water heat exchanger tubular heat exchanger. It is a gasification hot water boiler for the combustion of dry wood. The interior of the boiler consists of a filling chamber where the fuel is dried and fused. The wood gas then passes through the nozzle to the combustion chamber, where it burns with the aid of secondary air. The flue gases pass their heat in the heat exchanger through the walls of the pipes into the water.