In the present work, a lumped-parameter model of a multifunctional ventilation unit for residential applications was developed in the Simulink environment, also relying on the Simscape toolbox with Moist Air and Two-phase fluid libraries. A simple, yet effective method to analyze and optimize the efficiency of the combined HVAC – air distribution system is proposed. To investigate the impact of boundary conditions on system performance, a parametric study of different installation conditions was also carried out, including outdoor air and indoor air temperature, humidity, static pressure, filter fouling, pressure drop in the intake and distribution ducts. The model highlights a strong decrease in the useful cooling/heating heat flow rate produced by the system as the installation and maintenance conditions become more challenging.
Comprehensive modeling of ventilation systems for Nearly Zero Energy Buildings / Sedoni, Roberto; Cannistraci, Gioele; Santangelo, Paolo Emilio; Angeli, Diego; Romani, Marco; Fioravanti, Luca. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6596. - 2685:1(2024), pp. 1-8. (Intervento presentato al convegno 40th UIT International Heat Transfer Conference (UIT 2023) tenutosi a Assisi, Italia nel 26-28 giugno 2023) [10.1088/1742-6596/2685/1/012045].
Comprehensive modeling of ventilation systems for Nearly Zero Energy Buildings
Sedoni, Roberto
;Santangelo, Paolo Emilio;Angeli, Diego;
2024
Abstract
In the present work, a lumped-parameter model of a multifunctional ventilation unit for residential applications was developed in the Simulink environment, also relying on the Simscape toolbox with Moist Air and Two-phase fluid libraries. A simple, yet effective method to analyze and optimize the efficiency of the combined HVAC – air distribution system is proposed. To investigate the impact of boundary conditions on system performance, a parametric study of different installation conditions was also carried out, including outdoor air and indoor air temperature, humidity, static pressure, filter fouling, pressure drop in the intake and distribution ducts. The model highlights a strong decrease in the useful cooling/heating heat flow rate produced by the system as the installation and maintenance conditions become more challenging.
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