نوع مقاله : مقاله پژوهشی
نویسنده
عضو هیئت علمی دانشگاه سیستان و بلوچستان، دانشکده مهندسی شهید نیکبخت، گروه مهندسی مکانیک
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
This study initially investigates the feasibility of replacing a tube-duct exchanger with a three-duct exchanger in a real-world energy recovery system. The performance of the two exchangers is then compared under dimensionless climatic conditions. In the three-fluid heat exchanger, a desiccant solution is separated from the ventilation air by a semipermeable membrane, enabling the exchange of moisture and heat. Water, as the third fluid, absorbs excess heat generated or restores the heat lost by the desiccant solution. In the tube-duct exchanger, water pipes pass through the desiccant solution channel. Conversely, in the three-channel exchanger designed and modeled in this study, water duct are positioned on both sides of the desiccant solution channel. The conservation equations for mass and energy for all three fluids are derived and solved using the finite difference method with Fortran programming. The study evaluates the effect of two different water channel geometries, serving as the third fluid, on energy consumption and the sensible and latent efficiencies of the energy exchangers. Key dimensionless parameters, including the desiccant solution’s dimensionless temperature and the air-to-solution mass flow ratio, are analyzed. The results reveal that, for dimensionless inlet air temperature and humidity conditions, the three-channel energy exchanger achieves up to a 5% increase in latent efficiency and a 25% increase in sensible efficiency compared to the tube-channel design at a mass flow ratio of 1.
کلیدواژهها [English]
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