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March 6, 20260 citationsOpen Access

Mitigating exhaust air recirculation in vertically stacked VRF outdoor units under extreme hot-climate conditions: A CFD case study in Saudi Arabia

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AAAHMAD ABDELLATIFSFSaad Ferekh

Key Points

  • The aim is to explore solutions for reducing exhaust air recirculation in vertically stacked VRF outdoor units in hot climates.
  • Conducted a CFD case study
  • Analyzed air flow patterns around VRF outdoor units
  • Examined the impact of louvers on air movement
  • Identified significant exhaust recirculation issues under extreme heat
  • Demonstrated that outward-inclined louvers improved air flow effectiveness
  • Provided design recommendations to enhance VRF unit performance

Abstract

This study investigates a real project case, Al Alya Residence, a six-floor building with two 10 HP VRF outdoor units installed per floor within recessed façade niches fitted with 15° outward-inclined louvers.

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Cite This Study

ABDELLATIF et al. (2026) studied this question.

synapsesocial.com/papers/69aa70a9531e4c4a9ff5a98ahttps://doi.org/10.5281/zenodo.18862435
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