162275 20251017144603.0 doi 10.24425/ather.2025.154912 sideral 144842 ART-2025-144842 eng Uche, Javier Universidad de Zaragoza (orcid)0000-0003-4408-6881 Integrated model of a biomass boiler coupled with a Stirling engine 2025 Access copy available to the general public Unrestricted Integration of a Stirling engine in a biomass boiler can be an interesting renewable alternative for the supply of heat and electricity in isolated homes located in areas where local biomass is available and during months when sunlight is low. Since this integration requires a careful coupling of the engine and boiler, an integrated model of these two devices is a relevant issue. In this case, a modular integrated model of a 25 kWth biomass pellet boiler, fire-tube with a cylindrical water jacket, coupled to a 1 kWe free piston Stirling engine is presented. To model the boiler, and take into account the location of the Stirling head, the zonal method was chosen, which allows estimating this temperature from an additional set of surrounding temperatures. For the Stirling engin, a model widely used to evaluate those engines was used. Various software tools have been used to integrate the model sequentially. The integrated model predicts the thermal and electrical production based on different opera-tion parameters, such as the boiler load in 5% fractions of its load from 50 to 100%. The obtained results, which will be validated with the experimental setup, show a maximum output of approximately 600 W for the engine and a decreasing tem-perature profile in the combustion chamber, as a function of the partial load. info:eu-repo/grantAgreement/EUR/AEI/ENSURE Project TED2021-131397B-I00 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Usón, Sergio Universidad de Zaragoza (orcid)0000-0002-9279-1959 Gómez, Juan-Anat 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 46, 2 (2025), 133-141 Archives of Thermodynamics 1231-0956 1921805 http://zaguan.unizar.es/record/162275/files/texto_completo.pdf Versión publicada 2749213 http://zaguan.unizar.es/record/162275/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:162275 articulos driver 2025-10-17-14:14:42 ARTICLE