Project description: Based on long-term air flow organization research, the first attached ventilation theory and series of new technologies have attracted the attention of international and domestic colleagues. The "Extended Coanda Effect"(ECE) is proposed-the phenomenon that the jet collides with the ground along the vertical wall or column wall, continues to flow spanwise along the plane, and re-adheres to the ground to form an "air lake" in the working area. Correlations between ventilation influencing factors and characteristic ranges in the wall-attached area and the surface air lake area are established. Pioneering the mechanism and theory of using ECE to create a new type of efficient attached ventilation air flow organization, clarifying the flow and heat transfer laws of attached ventilation air flow, revealing the induction and control mechanism of equivalent combined heat sources on the air flow, and proposing the boundary layer flow field The "curvature effect" of cylinders and the "equivalent curvature effect" of prisms have invented many new technologies and design methods for "column-wall-body" attached air flow organization. It overcomes the shortcomings of applying traditional mixed and displacement ventilation methods in high-load and large spaces, and achieves a new breakthrough in airflow organization technology. Relying on the research and development of major key projects such as the national key R & D plan, national science and technology support projects, and the National Natural Science Foundation of China, the technology has formed a pillar-wall efficient air supply outlet with efficient attaching and attaching air technology as the main body; a static pressure box with stable pressure and uniform air supply series; a patent group including more than 40 invention patents composed of low-resistance components of the ventilation and air-conditioning transmission and distribution series.  Prospects: Theory and technology have been promoted and applied in Gree Air Conditioning, China Railway First, Second and Fourth Survey and Design Institutes, China Railway Construction Group, China Power Construction Group, etc., which can improve the ventilation efficiency of large spaces such as subways, hydropower, and industrial plants. 35%-60%. Relevant test research organized by China Railway Fourth Survey and Design Institute shows that "taking the standard 2-story island station of subway engineering as an example, this ventilation mode can increase the comprehensive refrigeration performance coefficient of the air conditioning system by 17%."