本研究由ASHRAE技术委员会（TC）4.3赞助。本研究的目的是更新ASHRAE标准15，尤其是8.11.5中所需通风量的计算。对这一方法基础的历史根源的研究表明，这一公式可能是在1930年之前发展起来的。目前的公式表明，在泄漏期间冲洗制冷剂的适当通风率与室内最大系统中制冷剂质量的平方根成正比。该方程式不考虑最大可接受浓度的变化（如果制冷剂浓度限制- RCL），不考虑制冷剂性质的差异，如沸点、蒸汽压、分子量，也不考虑不同的房间大小。更严格、科学合理的方法可以为制冷机房的通风要求提供技术上合理的理由，以维持安全。本研究检查记录的事故场景，以制定适当的泄漏场景和通风要求，其中考虑了几个重要参数:制冷剂质量、制冷剂特性、房间体积、检测延迟，以及出于健康和安全目的建议的建议浓度限值。 确定适当的时变排放率后，使用质量平衡e方程来确定室内制冷剂的浓度。通过调节通风速率，将室内制冷剂浓度保持在建议的浓度限值以下。提供了一个简单的公式，可以使用根据房间和制冷剂特性指定或计算的几个常数来计算通风率。提供了具有RCL值和热力学性质的制冷剂所需的常数。提供了标准15和标准34（制冷剂性能表）的建议附录。

This research was sponsored by ASHRAE Technical Committee (TC) 4.3. The purpose of the research is to update ASHRAE Standard 15, especially the calculation of the required ventilation rate in 8.11.5. A search for the historical roots of the basis of this approach indicates that this formula was likely developed before 1930. The current formula suggests that the appropriate ventilation rate to flush a refrigerant during a leak is proportional to the square root of the mass of the refrigerant in the largest system in the room. This equation does not account for variations in the maximum acceptable concentration (if refrigerant concentration limit - RCL), does not account for the difference in refrigerant properties such as boiling point, vapor pressure, molecular weight, and does not account for different room sizes. A more rigorous and scientifically sound approach yields a technically defensible rationale for ventilation requirements in refrigeration machinery rooms to maintain safety.This research examines recorded accident scenarios to develop an appropriate leakage scenario and a ventilation requirement that takes into account several important parameters: the mass of the refrigerant, refrigerant properties, the volume of the room, the delay in detections, and the recommended concentration limit suggested for health and safety purposes. After determining an appropriate, time-varying emission rate, a mass balance e equation is used to determine the concentrations of the refrigerant in the room. The refrigerant concentration in the room is kept below the recommended concentration limit by adjusting the ventilation rate.A simple formula is provided to calculate the ventilation rate using several constants that are specified or calculated based on room and refrigerant characteristics. The needed constants have been provided for refrigerants with RCL values and thermodynamic properties. A suggested proposed addendum to Standard 15 and Standard 34 (the refrigerant property tables) is provided.