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Volume 14
Issue 12
10.3390/buildings14123716
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Energy Saving for Impinging Jet Ventilation System by Employing Various Supply Duct Locations and Return Grill Elevation

by
Bandar Awadh Almohammadi
1,
Eslam Hussein
2,
Khaled M. Almohammadi
3,
Hassanein A. Refaey
1,2,* and
Mohamed A. Karali
4,*
1
Department of Mechanical Engineering, College of Engineering at Yanbu, Taibah University, Yanbu Al-Bahr 41911, Saudi Arabia
2
Department of Mechanical Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo 11629, Egypt
3
Department of Mechanical Engineering, College of Engineering at Madinah, Taibah University, Al-Madinah Al-Munawara 42353, Saudi Arabia
4
Department of Mechanical Engineering, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
*
Authors to whom correspondence should be addressed.
Buildings 2024, 14(12), 3716; https://doi.org/10.3390/buildings14123716
Submission received: 16 October 2024 / Revised: 12 November 2024 / Accepted: 19 November 2024 / Published: 21 November 2024
(This article belongs to the Section Building Energy, Physics, Environment, and Systems)
Versions Notes

Abstract

The study of energy savings in ventilation systems within buildings is crucial. Impinging jet ventilation (IJV) systems have garnered significant interest from researchers. The identification of the appropriate location for the IJV reveals a gap in the existing literature. This research was conducted to address the existing gap by examining the impact of IJV location on energy savings and thermal comfort. A comprehensive three-dimensional CFD model is examined to accurately simulate the real environment of an office room (3 × 3 × 2.9 m3) during cooling mode, without the application of symmetrical plans. Four locations have been selected: two at the corners and two along the midwalls, designated for fixed-person positions. The return vent height is analyzed utilizing seven measurements: 2.9, 2.6, 2.3, 1.7, 1.1, 0.8, and 0.5 m. The RNG k–ε turbulence model is implemented alongside enhanced wall treatment. The findings indicated that the optimal range for the return vent height is between 1.7 and 0.8 m. It is advisable to utilize the IJV midwall 1 location, positioned behind the seated individual and away from the exterior hot wall. It is characterized by low vortex formation in the local working zone that contributes to a more comfortable sensation while providing recognized energy-saving potential.
Keywords: HVAC; impinging jet ventilation; thermal comfort; indoor air quality; energy saving; office building; CFD HVAC; impinging jet ventilation; thermal comfort; indoor air quality; energy saving; office building; CFD

Share and Cite

MDPI and ACS Style

Almohammadi, B.A.; Hussein, E.; Almohammadi, K.M.; Refaey, H.A.; Karali, M.A. Energy Saving for Impinging Jet Ventilation System by Employing Various Supply Duct Locations and Return Grill Elevation. Buildings 2024, 14, 3716. https://doi.org/10.3390/buildings14123716

AMA Style

Almohammadi BA, Hussein E, Almohammadi KM, Refaey HA, Karali MA. Energy Saving for Impinging Jet Ventilation System by Employing Various Supply Duct Locations and Return Grill Elevation. Buildings. 2024; 14(12):3716. https://doi.org/10.3390/buildings14123716

Chicago/Turabian Style

Almohammadi, Bandar Awadh, Eslam Hussein, Khaled M. Almohammadi, Hassanein A. Refaey, and Mohamed A. Karali. 2024. "Energy Saving for Impinging Jet Ventilation System by Employing Various Supply Duct Locations and Return Grill Elevation" Buildings 14, no. 12: 3716. https://doi.org/10.3390/buildings14123716

APA Style

Almohammadi, B. A., Hussein, E., Almohammadi, K. M., Refaey, H. A., & Karali, M. A. (2024). Energy Saving for Impinging Jet Ventilation System by Employing Various Supply Duct Locations and Return Grill Elevation. Buildings, 14(12), 3716. https://doi.org/10.3390/buildings14123716

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