为了确定某水冷式柴油发动机试验室的通风量,分析了其试验室热量的输入及输出,并采用热平衡方程进行设计计算。采用复合式排烟管道系统及Y形双排管,起到对烟气的稀释和降温作用,大大提高了试验室的防燃防爆、应对和排除紧急故障的能力以及安全可靠性。 In order to determine the ventilation rate of a water-cooled diesel engine laboratory, the input and output of laboratory heat were analyzed and the heat balance equation was used to design and calculate. The compound exhaust pipe system and the Y-shaped double-pipe play the role of dilution and cooling of flue gas, greatly improving the flameproofness and explosion proof of the laboratory, the ability to deal with and eliminate emergency faults, and safety and reliability.