Influence of building height on load from outdoor air of air conditioning

For analysing the influence of building height on load from outdoor air of air conditioning in super high-rise buildings, analyses the variation laws of outdoor meteorological parameters and outdoor air specific enthalpy in vertical direction. Taking Nanjing as an example, analyses the unit load from outdoor air under continuous and intermittent operation conditions at different outdoor air introduction height of 100 to 1 000 m. The results indicate that with the increase of outdoor air introduction height, summer cooling load from outdoor air decreases and winter heating load from outdoor air increases. Bigger decline of cooling load and smaller rise of heating load lead to the decline of the annual unit load from outdoor air. When the outdoor air introduction height is 200, 500, 800, 1 000 m, comparing to the basis of load from outdoor air, the annual cumulative unit load from outdoor air decreases 10.3%, 22.8%, 31.9%, 36.2% under the continuous operation conditions respectively, and 10.5%, 23.2%, 32.5%, 37.1% under the intermittent operation conditions respectively.