Performance evaluation of impinging jet ventilation combined with ductless personalized ventilation

Impinging jet ventilation (IJV), which supplies a high momentum air impinging and spreading over the floor, could be used in both cooling heating modes. However, as low-level supply system, excessive temperature difference between head ankle levels may exist due to cool being directly supplied occupied zone. As one type of different personalized (PV) terminal device, ductless (DPV) is self-standing system doesn’t require an extended duct. In this study, numerical simulation was assess performance DPV combined with IJV office buildings under operating parameters. The results show that large occupant’s will significantly decreased by application while not influencing stratification characteristics ventilation.