Assessing the effects of sliding doors on an operating theatre climate
Assessing the effects of sliding doors on an operating theatre climate
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DOI：
10.1007/s12273-012-0071-x
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发表时间：
2012-03-01
影响因子：
5.5
通讯作者：
Cammarata, Giuliano
中科院分区：
文献类型：
--
作者：
Balocco, Carla;Petrone, Giuseppe;Cammarata, Giuliano
手术部位感染（ssi）是第二至第三常见的卫生保健相关感染（HAIs）。保持良好的室内空气质量（IAQ）和最佳的手术室通风系统对于确保患者和手术团队的健康和安全，降低术后伤口感染的风险非常重要。然后，在OTs中一个重要的考虑是控制气溶胶，麻醉气体和烟雾。本文采用基于计算流体力学（CFD）的气流建模方法，对采用超净空气过滤系统和全顶单向扩散器的标准ISO5级OT室内气候进行了研究。OT有暖通空调（HVAC）设备，采用层流或超净通风。给出了一种简单的方法来分析不同推拉门条件下行人过街和行人担架过街对室外气候、气流模式和室内压力方案的影响。本文提出的模拟方法属于固体物体在流体中运动数值模拟的间接方法，为研究多物理条件下的复杂流动现象提供了重要的知识。瞬态仿真结果表明，手术人员的移动和滑动门的开启和关闭会导致手术室内气流的中断，气流的位移和分布也会发生变化，但暖通空调设备系统静压的变化对通风系统工况和能量性能有重要影响。
Surgical site infections (SSIs) are the second to third most common site of health care associated infections (HAIs). It is very important to maintain good indoor air quality (IAQ) and the best ventilation system in the operating theatre (OT) to ensure health and safety for the patient and surgical team, also to reduce the risk of post-operative wound infection. Then a significant consideration in OTs is the control of aerosols, anesthesia gases and smoke. The present paper uses the airflow modeling based on computational fluid dynamics (CFD) to study the indoor climate of a standard ISO5 class OT with an ultraclean air filter system and a total ceiling unidirectional diffuser. The OT has a heating, ventilation, and air conditioning (HVAC) plant with a laminar airflow (LAF) or ultraclean ventilation. A simple method to analyze the effects of different sliding door conditions combined with crossing persons and persons with a stretcher crossing, on the OT climate, airflow patterns and the indoor pressures scheme, is provided. The proposed simulation method, that belongs to the indirect approach for a numerical simulation of solid object movements in a fluid, provides important knowledge on complex flow phenomena combined with multi-physical conditions. Results obtained by transient simulation show disruptions of the airflow inside the OT and different airflow displacement and distribution caused by surgery staff movements and sliding door opening and closing, but in particular static pressure changes in the HVAC plant system with important effects on ventilation system working conditions and its energy performances.