消防疏散照明用集中电源容量计算分析

洪友白（厦门合立道工程设计集团股份有限公司，福建省厦门市  361006）

Analysis on Capacity Calculation of Centralized Power Supply in Lighting for Fire Evacuation

HONG Youbai（Xiamen Hordor Architecture & Engineering Design Group

Corp.,Ltd.,Xiamen 361006,Fujian Province，China）

Abstract：The capacity selection of centralized power supply in lighting for fire evacuation,is the determination on the rated output power and continuous emergency working hours;this paper analyzes specific requirements of the constant power features of fire evacuation lighting luminaire and the battery attenuation features on supply and distribution of centralized power supply,infers the calculation equation of rated output power of centralized power supply with the linear proportion conversion method of“ Power to Time”,and also obtains the corresponding continuous emergency working hours;finally,this paper gives two examples for the capacity calculation of centralized power supply in lighting for fire evacuation of two civil buildings.

Key words：centralized power supply;rated output power;continuous emergency working hours;Power to Time;proportion calculation;line loss;battery lifespan;attenuation coefficient

摘　要：消防疏散照明用集中电源的容量选择，即是对额定输出功率和持续应急工作时间的确定；分析消防疏散照明灯具的恒功率特性和蓄电池衰减特性对集中电源的供配电特定要求，并以“功率换时间”的线性比例换算方法，推导出集中电源额定输出功率的计算公式，同时得出对应的持续应急工作时间；最后给出两个民用建筑的消防疏散照明用集中电源容量计算示例。

关键词：集中电源;额定输出功率;持续应急工作时间;功率换时间;比例计算;线路损耗;蓄电池寿命;衰减系数

中图分类号：TU892      　　  　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2022.04.001