Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 52 6 2018 11 21 A Novel Biomass-Driven Cogeneration System for Zero-Energy Buildings A Novel Biomass-Driven Cogeneration System for Zero-Energy Buildings 1443 1462 3142 10.22060/mej.2018.14766.5942 FA Kourosh Javaherdeh Instructor of Department of Mechanical Engineering, Faculty of Engineering, University of Guilan 0000-0002-1570-011X Fazel Mohammadikhah Phd student of mechanical engineering - faculty of ,mechanical engineering - university of guilan Javad MahmoudiMehr gulian Journal Article 2018 08 04 This study proposes and evaluates a new cogeneration system for zero-energy buildings.<br />The proposed system is comprised of a biomass gasifier, an internal combustion engine, a double-effect<br />lithium bromide-water absorption chiller, a backup boiler for hot water production, a gas storage tank,<br />a hot water storage tank, and two heat exchangers. The system is supposed to provide the building with<br />the electricity, hot water, heating and cooling requirements over the year. Besides presenting a functional<br />strategy for the proposed system, this study evaluates the sensitivity of the objectives of the system (i.e.,<br />annual actual benefit) to some main decision variables, including the capacity of engine, chiller and<br />boiler, the volume of hot water tank, the start-up time of the internal combustion engine. The results<br />demonstrate that an increase in the input power of the engine helps to achieve the goal of zero-energy<br />buildings. It is observed that the system is most economical when the cooling capacity of the absorption<br />chiller approaches the heating and cooling demands of the building. The results also indicate that the<br />start-up time of the combustion engine would be more influential in the case of high electricity demand<br />conditions. This study proposes and evaluates a new cogeneration system for zero-energy buildings.<br />The proposed system is comprised of a biomass gasifier, an internal combustion engine, a double-effect<br />lithium bromide-water absorption chiller, a backup boiler for hot water production, a gas storage tank,<br />a hot water storage tank, and two heat exchangers. The system is supposed to provide the building with<br />the electricity, hot water, heating and cooling requirements over the year. Besides presenting a functional<br />strategy for the proposed system, this study evaluates the sensitivity of the objectives of the system (i.e.,<br />annual actual benefit) to some main decision variables, including the capacity of engine, chiller and<br />boiler, the volume of hot water tank, the start-up time of the internal combustion engine. The results<br />demonstrate that an increase in the input power of the engine helps to achieve the goal of zero-energy<br />buildings. It is observed that the system is most economical when the cooling capacity of the absorption<br />chiller approaches the heating and cooling demands of the building. The results also indicate that the<br />start-up time of the combustion engine would be more influential in the case of high electricity demand<br />conditions. https://mej.aut.ac.ir/article_3142_bd85282513da4089c441926e1975898c.pdf