In recent years, rapid urban development has led to capsule hotels, sleep pods, and other tiny sleeping spaces that adapt to people’s fast-paced lives, achieving maximum functionality with a very small footprint. However, due to the small space, human metabolic pollutant (such as CO₂) is more likely to accumulate, and the air is not easily circulated. In this paper, a full-size experimental platform is set up with three types of ventilation modes to explore the exclusion efficiency of metabolic pollutants and the overall distribution of age of air under these ventilation modes. The conclusions showed that the mean values of metabolic pollutant exclusion rates for the different ventilation modalities varied very little across the spatial dimensions of the confined space but varied considerably in the area around the head. The double-side attached ventilation method was the most effective in removing human metabolic pollutants, especially in the head region (CN ≥ 0.92), while the single-wall attached ventilation method had the best air exchange efficiency (η ≥ 0.85). This suggests an inconsistent distribution of CO₂ and age of air, which is contrary to general common sense. The conclusions of this paper can guide the design of ventilation for tiny sleeping spaces.

近年来，城市的快速发展催生了胶囊旅馆、睡眠舱等适应人们快节奏生活的微小睡眠空间，以极小的占地面积实现了最大的功能。但由于空间狭小，人体代谢污染物（如CO ₂）更容易积聚，且空气不易流通。本文搭建了3种通风模式的全尺寸实验平台，探讨不同通风模式下代谢污染物的排除效率以及空气龄的整体分布情况。结论表明，不同通气方式的代谢污染物排除率平均值在密闭空间的空间维度上变化很小，但在头部周围区域变化很大。双面贴附通风方式去除人体代谢污染物最有效，特别是头部区域（CN≥0.92），而单壁贴附通风方式空气交换效率最好（η≥0.85）。_{这表明CO 2}和空气年龄的分布不一致，这与一般常识相反。本文的结论可以指导微小睡眠空间的通风设计。