1. Introduction
Biomass combustion technology is growing to fulfil the energy demands such as heating and power generation. Today, a significant number of coalfired power plants were converted to burn biomass materials. Due to increase in demand for biomass as a source of renewable energy to provide domestic and industrial
heating, the biomass boiler industry and the biomass fuels supply
chain are expanding rapidly. In order to keep up with this growth there is an urgent need to carry out further analysis of the heat
transfer characteristics of combustion of various biomass fuels.