An Experiment and CFD Simulation for the Application of a Wind Power System Combined with Exhaust in Super High-Rise Apartment Buildings

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The aim of this study was to test the application of a wind power system combined with exhaust to a high-rise apartment building. The research results can be summarized as follows ; 1) The proposed location of the wind power system was a roof-top exhaust pipe from a dining room and bathroom of a super high-rise apartment. The size of the module for concentrating wind was 500mm in diameter and 320mm in height (the upper diameter was 400mm with Venturi effect inducement). The blade was a combination of a Savonius type and a Darrieus type, and was able to rotate. 2) Simulation results show that when the outdoor wind velocity was 3m/s, the wind velocity discharged from the exhaust pipe of the system, combined with the exhaust appeared to increase compared to the wind velocity discharged from the general exhaust pipe (0.46 m/s). In particular, when the outdoor wind velocity increased (5 m/s), the wind velocity discharged from exhaust pipe increased more (0.77 m/s), and so the proposed system was found to have a wind velocity amplification effect. 3) As for the results of measuring the generation quantity for 13 days by installing the proposed system on an apartment building rooftop 35 m tall, the Case 3 system (outside air + exhaust wind + wind concentrating device) proposed in the study appeared to have a higher generation quantity than other systems. Specifically, even when there was a low outside wind velocity value, the electrical energy appeared to be high, confirming the exhaust wind concentration effect. Therefore, the wind power system proposed in this study was found to be effective in terms of increasing driving wind velocity, thus resolving the disadvantage of compact wind power generation systems. This study confirms the viability of applying small wind power generation systems to high-rise apartment buildings, which will contribute to reducing greenhouse gas emissions.