基于飞机客舱空气品质的桥载空调送风优化

针对目前桥载空调恒定送风所造成的客舱内舒适性差及节能效果不理想问题,以波音737客舱为研究对象,采用CFD方法建立客舱仿真模型,并通过实验验证了所建立的CFD客舱仿真模型的合理性。在此模型基础上,研究桥载空调不同送风速度对客舱内温度场、风速场及NOx浓度场的影响,并分别拟合出客舱空气分布特性指标(ADPI)、排污效率与桥载空调送风速度的函数关系,再根据ADPI、排污效率构建评价函数,得到桥载空调的优化送风速度,该送风速度能够为桥载空调机组的节能控制提供依据。

Optimization of air supply for bridge load air conditioning based on aircraft cabin air quality

Aimed at the problem of poor effects of cabin comfort and energy saving caused by constant air supply velocity of bridge air conditioning,in the paper,we built the cabin simulation model adopting the CFD method based on the research object,Boeing 737 passenger cabin. And the validity of the CFD cabin simula-tion model is verified by experiments. Based on this model,the effects of different air supply velocities on the temperature field,wind velocity field and NOx concentration field in cabin are studied. Then the functional re-lationship between the air diffusion perfoumance index (ADPI),the drainage efficiency and the bridge load air conditioning air supply velocity is fitted separately. Meanwhile,the optimal air supply velocity of bridge load air conditioning is obtained through the merit function in response to ADPI and drainage efficiency,which could provide the basis for energy-saving control of bridge load air conditioning unit.