دورية أكاديمية
Simulation and Measurement of Energetic Performance in Decentralized Regenerative Ventilation Systems
| العنوان: | Simulation and Measurement of Energetic Performance in Decentralized Regenerative Ventilation Systems |
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| المؤلفون: | Carbonare, Nicolas, Fugmann, Hannes, Asadov, N., Pflug, T., Schnabel, Lena, Bongs, Constanze |
| سنة النشر: | 2020 |
| المجموعة: | Publikationsdatenbank der Fraunhofer-Gesellschaft |
| مصطلحات موضوعية: | Thermische Systeme und Gebäudetechnik, decentralized ventilation, heat recovery, honeycomb heat exchanger, computational fluid dynamics, Modelica, Energieeffiziente Gebäude, Lüftungs- und Klimatechnik |
| الوقت: | 621, 662, 697 |
| الوصف: | Art. 6010, 25 S. ; Decentralized regenerative mechanical ventilation systems have acquired relevance in recent years for the retrofit of residential buildings. While manufacturers report heat recovery efficiencies over 90%, research has shown that the efficiencies often vary between 60% and 80%. In order to better understand this mismatch, a test facility is designed and constructed for the experimental characterization and validation of regenerative heat exchanger simulation models. A ceramic honeycomb heat exchanger, typical for decentralized regenerative ventilation devices, is measured in this test facility. The experimental data are used to validate two modeling approaches: a one-dimensional model in Modelica and a computational fluid dynamics (CFD) model built in COMSOL Multiphysics®. The results show an overall acceptable thermal performance of both models, the 1D model having a much lower simulation time and, thus, being suitable for integration in building performance simulations. A test case is designed, where the importance of an appropriate thermal and hydraulic modeling of decentralized ventilation systems is investigated. Therefore, the device is integrated into a multizone building simulation case. The results show that including component-based heat recovery and fan modeling leads to 30% higher heat losses due to ventilation and 10% more fan energy consumption than when assuming constant air exchange rates with ideal heat recovery. These findings contribute to a better understanding of the behavior of a growing technology such as decentralized ventilation and confirm the need for further research on these systems. ; 13 ; Nr.22 |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | Energies; https://publica.fraunhofer.de/handle/publica/265465Test |
| DOI: | 10.3390/en13226010 |
| الإتاحة: | https://doi.org/10.3390/en13226010Test https://publica.fraunhofer.de/handle/publica/265465Test |
| رقم الانضمام: | edsbas.B2D30F38 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/en13226010 |
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