Chilled beam systems provide sensible cooling in the occupied space using chilled water flowing through modular beams mounted to a ceiling. Such systems achieve greater energy efficiency than all-air system due to larger thermal energy of the chilled water than air, and thus are well-suited for spaces with relatively large sensible cooling load. This paper presents a numerically based study focusing on the performance of combined passive chilled beam (PB) systems. Using computational fluid dynamics (CFD) simulation, the amount of sensible cooling by PB and its impacts on ventilation effectiveness and occupant comfort in a typical office room are investigated.
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