本文在设计规范规定的范围内,以一个中危险级的工程为例,比较了自动喷水灭火系统管网在高、中、低三种流速条件下的流量、水压、功率消耗和费用情况,并建立了流速和总费用之间的费用函数。经过分析研究,认为采用1m/s左右的低流速,在技术上优于高流速,在建设费用上可取得最佳的经济效益。 In this article, within the scope of the design specification, a medium-risk-class project was used as an example to compare the flow, water pressure, power consumption, and cost of automatic sprinkler system pipe network under the conditions of high, medium, and low flow rates. And establish a cost function between flow rate and total cost. After analysis and research, it is considered that using a low flow rate of about 1m/s is technically superior to a high flow rate, and the best economic benefit can be obtained in construction costs.