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首页> 外文期刊>Building and Environment >Influence of air supply velocity and room temperature conditions on bioaerosols distribution in a class Ⅰ operating room
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Influence of air supply velocity and room temperature conditions on bioaerosols distribution in a class Ⅰ operating room

机译：空气供应速度和室温条件对Ⅰ类手术室生物溶胶分布的影响

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摘要

Surgical site infections (SSIs) have gained increasing prominence in recent decades. Bioaerosols are an important factor causing such intraoperative infections. Their distribution can be affected by environmental parameters in the operating room (OR), such as the air supply velocity and room temperature. The research object of this study was a Class I operating room, which has the strictest cleanliness requirements. Four different air supply velocities (0.16, 0.24, 0.29, and 0.33 m/s) and four different room temperatures (18 degrees C, 20 degrees C, 22 degrees C, and 24 degrees C) formed seven orthogonal experiment cases. The bioaemsols release experiments conducted in an environmental chamber to simulate a full-scale operating room. The experiments could well verify the computational fluid dynamics-based numerical simulation using the renormalization group (RNG) kappa-epsilon model as a turbulence model. The experimental and numerical results confirmed that an increase in the air supply velocity would increase the dispersion of bioaerosols particles. An air supply velocity greater than 0.24 m/s can ensure greater cleanliness in the surgical area. Whereas, when the air supply velocity continues to increase (0.33 m/s), it will increase the bioaemsols deposition in the surgical area. In terms of controlling the concentration of bioaerosols in a certain area, 0.24 m/s-0.29 m/s is the optimal range of air supply velocity. However, the distribution of bioaerosols particles is not sensitive to the response of OR room temperature changes.
机译：近几十年来，手术部位感染（SSIS）越来越突出。生物这一性是导致这种术中感染的重要因素。它们的分布可以受手术室（或）中的环境参数的影响，例如供气速度和室温。本研究的研究对象是一级手术室，具有最严格的清洁要求。四种不同的空气供应速度（0.16,0.24,0.29和0.33 m / s）和四个不同的室温（18℃，20℃，22℃和24℃）形成七个正交实验案例。在环境室中进行的Bioaemsols释放实验以模拟全尺寸的手术室。实验很好地验证了使用重整化组（RNG）Kappa-Epsilon模型作为湍流模型的基于计算流体动力学的数值模拟。实验性和数值结果证实，空气供应速度的增加会增加生物溶胶颗粒的分散。空气供应速度大于0.24米/升，可以确保手术区域的更大清洁。然而，当空气供应速度持续增加时（0.33米/秒），它将增加手术区域中的生物溶剂沉积。就某个区域中的生物溶胶浓度控制，0.24m / s-0.29 m / s是空气供应速度的最佳范围。然而，生物溶胶粒子的分布对或室温变化的响应不敏感。

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