负压病房渗透风量计算及压力控制设计
Infiltration air volume calculation and pressure control design in negative-pressure ward
摘要：
介绍了天津市某医院新建呼吸道传染病区通风空调系统设计方案，针对负压隔离病房，重点分析了房间渗透风量及送排风量计算方法，建立了空气传质质量守恒多区模型，对单个房间和整个建筑风量及压差平衡进行了模拟验证，从系统压力平衡的角度，对送排风口的设置给出了建议。旨在通过合理的送排风设计，确保房间的压差梯度。
Abstract：
This paper presents the design scheme of the HVAC system in the newly-built respiratory infection ward of a hospital in Tianjin. Aiming at the negative-pressure isolation ward, the calculation methods of room infiltration air volume and air supply and exhaust air volume are emphatically analysed, the multi-zone model of air mass transfer mass conservation is established, and the air volume and differential pressure balance of a single room and the whole building are verified by simulation. Suggestions on the setting of air supply and exhaust outlets are given from the perspective of system pressure balance, in order to ensure the pressure gradient of the room through reasonable air supply and exhaust design.
Keywords:respiratory infectious disease; negative-pressure ward; multi-zone model; differential pressure gradient; air distribution