燃气燃火特效剧场的有害物质散发特性及适宜的通风技术措施研究
Emission characteristics of harmful substances and suitable ventilation measures in flame effect theaters
摘要：
燃火特效剧场在封闭空间内使用大量燃气制造火焰特效进行表演，其通风需求有较大特殊性。对该类型剧场内部的有害物质散发规律进行了研究，发现主要有害物质为CO，且潜在隐患较大，通风设计应以排除CO为主要目标。采用模拟仿真的方法，对CO的排除效率进行了研究，发现该类型剧场在表演开始后，会在内部逐渐聚集大量CO，单纯提高通风换气次数或采用常规的送风方案都无法满足要求，建议在观演区采用近距离低速送风的方式使该区域形成单向流，阻止表演区的回流空气侵入观演区。
Abstract：
The flame effect theater uses a large amount of gas to create flame effects for performances in a closed space, and its ventilation requirements have greater particularity. Studies the emission law of harmful substances in the flame effect theater, and finds that the main harmful substance is CO and the potential hazard is large. Therefore, the main goal of the ventilation system is to eliminate CO. Uses the simulation method to study the CO removal efficiency, and finds that a large amount of CO will gradually accumulate in the flame effect theater. Simply increasing the air change rate or using conventional air supply scheme can not meet the requirements. Suggests that the ventilation system should drive air out of the viewing area in one direction. Specific measures include: the air outlet should be set closer to the audience, and the air should be supplied at a lower speed, to prevent the return air of the performance area entering the viewing area.
Keywords:flame effect theater, harmful substance, emission characteristic, ventilation efficiency, measure, air quality