高原地区室内空间弥散供氧量分析计算
Analysis and calculation of indoor space diffusion oxygen supply in plateau area
摘要：
基于风量平衡方程和氧量平衡方程推导和分析了室内氧浓度变化方程,并对该方程进行了案例计算。结果表明,当目标室内氧浓度确定后,室内氧浓度变化速率主要由新风量决定,新风量较小时,所需稳态供氧量减少,但从初始供氧浓度达到目标室内氧浓度所需时间增加,难以满足房间使用要求。因此提出了在供氧早期对稳态计算的供氧量进行修正,适当增加供氧量,以实现在规定时间内达到设定的目标室内氧浓度,并通过科学计算软件计算,获得所需的供氧量修正系数,可用于高原地区室内空间弥散供氧量设计计算。
Abstract：
Based on the air volume balance equation and oxygen volume balance equation, this paper deduces and analyses the indoor oxygen concentration change equation, and calculates the equation with a case. The results show that when the target indoor oxygen concentration is determined, the change rate of indoor oxygen concentration is mainly determined by the outdoor air volume. When the outdoor air volume is small, the required steady state oxygen supply decreases, but the time from the initial oxygen supply concentration to the target indoor oxygen concentration increases, which is difficult to meet the room use requirements. Therefore, it is proposed to revise the steady state oxygen supply in the early stage of oxygen supply and increase the oxygen supply appropriately to achieve the target indoor oxygen concentration within the specified time. Through the scientific calculation software, the required oxygen supply correction coefficient is obtained, which can be used for the design and calculation of the indoor space diffusion oxygen supply in plateau area.
Keywords:plateau area; diffusion oxygen supply; calculation of oxygen supply; indoor oxygen concentration; steady state oxygen supply