防排烟系统与通风空调系统兼用，具有节约投资和占地、可靠性高等潜在优势。通过加设转换装置等手段，单风道空调系统和厨房、地下车库的排风系统等都可能兼用作防排烟系统。对有关的设计方法、理论，仍需深入探讨和规范化，并开发相应的设备部件 The combination of smoke prevention system and ventilation and air-conditioning system has potential advantages such as saving investment, occupying land, and high reliability. Through the addition of conversion devices and other means, single air-conditioning systems and exhaust systems for kitchens, underground garages, etc., may be used as smoke prevention systems. The relevant design methods and theories still need to be thoroughly explored and standardized, and corresponding equipment components must be developed.