Abstract
In recent years, the biomass market has constantly increased. The pellet manufacture industry has started looking for new products, such as wastes from forest, agriculture, and agroindustrial residues, among others, with the potential to be used as biofuels. However, some of these wastes have some characteristics that make both the combustion process and operating and maintenance conditions of thermal equipment difficult. Thus, further research to optimize the performance and ensure the compliance of the maximum atmospheric levels is needed. In order to carry out these studies, the design and implementation of a supervision, control, and data acquisition system for a domestic pellet boiler was carried out, which makes obtaining further information about the performance of non-conventional biofuels possible. Thus, these biofuels, coming from different sources, underwent different working regimes, facilitating the understanding of the results and the correction of limiting elements. The results from initial tests were reliable and precise, coinciding with the check readings that were done with a thermometer and a combustion gas analyser. Under these conditions, the system designed constitutes a fundamental tool to examine thermal processes with alternative biofuels, with the objective of making the most of different biomass wastes as renewable energy sources.
Highlights
Biomass has experienced a significant resurgence as an energy source
The recent repeal of the standard UNE-EN 14961 [3], and its replacement by the norm UNE-EN ISO 17225 [4], makes the commercialization of woody pellets possible for both industrial and domestic use and, implies an increase in the types of biomass wastes that might be used for this purpose
The plant consists of a multi-fuel boiler (Bioclass 9, Domusa Teknik, Errezil, País Vasco, Spain), Descriptionuseful of the Combustion
Summary
Biomass has experienced a significant resurgence as an energy source. More and more countries promote the use of renewable energy sources. Between 2006 and 2012, worldwide pellet production increased from 7 to 19 million tons, reaching. 28 million tons in 2015 [2]. This rise has implied wide diversity when it comes to the use of raw materials for pellet manufacture. The recent repeal of the standard UNE-EN 14961 [3], and its replacement by the norm UNE-EN ISO 17225 [4], makes the commercialization of woody pellets (and other kinds) possible for both industrial and domestic use and, implies an increase in the types of biomass wastes that might be used for this purpose. The European market of biomass boilers has grown in the same way [5]
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