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Numerical Analysis of the Building Energy Efficiency Using Two Different HVAC Systems: Variable Refrigerant Flow and Variable Air Volume Technologies

  • Variable refrigerant flow (VRF) and variable air volume (VAV) systems are considered among the best heating, ventilation, and air conditioning systems (HVAC) thanks to their ability to provide cooling and heating in different thermal zones of the same building. As well as their ability to recover the heat rejected from spaces requiring cooling and reuse it to heat another space. Nevertheless, atVariable refrigerant flow (VRF) and variable air volume (VAV) systems are considered among the best heating, ventilation, and air conditioning systems (HVAC) thanks to their ability to provide cooling and heating in different thermal zones of the same building. As well as their ability to recover the heat rejected from spaces requiring cooling and reuse it to heat another space. Nevertheless, at the same time, these systems are considered one of the most energy-consuming systems in the building. So, it is crucial to well size the system according to the building’s cooling and heating needs and the indoor temperature fluctuations. This study aims to compare these two energy systems by conducting an energy model simulation of a real building under a semi-arid climate for cooling and heating periods. The developed building energy model (BEM) was validated and calibrated using measured and simulated indoor air temperature and energy consumption data. The study aims to evaluate the effect of these HVAC systems on energy consumption and the indoor thermal comfort of the building. The numerical model was based on the Energy Plus simulation engine. The approach used in this paper has allowed us to reach significant quantitative energy saving along with a high level of indoor thermal comfort by using the VRF system compared to the VAV system. The findings prove that the VRF system provides 46.18% of the annual total heating energy savings and 6.14% of the annual cooling and ventilation energy savings compared to the VAV system.show moreshow less

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Metadaten
Document Type:Conference Proceeding
Conference Type:Konferenzartikel
Zitierlink: https://opus.hs-offenburg.de/8434
Bibliografische Angaben
Title (English):Numerical Analysis of the Building Energy Efficiency Using Two Different HVAC Systems: Variable Refrigerant Flow and Variable Air Volume Technologies
Conference:International Congress on Materials and Structural Stability (4. : March 6-10, 2023 : Rabat, Morocco)
Author:Niima Es-sakali, Samir Idrissi Kaitouni, Mohamed Oualid Mghazli, Moha Cherkaoui, Jens PfafferottStaff MemberORCiDGND
Year of Publication:2023
First Page:S389
Last Page:S395
Parent Title (English):NanoWorld Journal
Volume:9
Issue:S2
ISSN:2379-1101
DOI:https://doi.org/10.17756/nwj.2023-s2-066
URN:https://urn:nbn:de:bsz:ofb1-opus4-84343
Language:English
Inhaltliche Informationen
Institutes:Forschung / INES - Institut für nachhaltige Energiesysteme
Fakultät Maschinenbau und Verfahrenstechnik (M+V)
Collections of the Offenburg University:Bibliografie
Formale Angaben
Relevance for "Jahresbericht über Forschungsleistungen":Konferenzbeitrag: h5-Index < 30
Open Access: Open Access 
 Gold 
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International