喷淋计算（给排水专业）.doc

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1、2.喷淋计算计算原理参照《自动喷水灭火系统设计规范GB50084-2017》基本计算公式：1、喷头流量：式中：q--喷头处节点流量，L/minP--喷头处水压（喷头工作压力）MPaK--喷头流量系数2、流速V：式中：Q--管段流量L/sDj--管道的计算内径（m）3、水力坡降：式中：i--每米管道的水头损失（mH20/m）V--管道内水的平均流速（m/s）dj--管道的计算内径（m），取值应按管道的内径减１mm确定4、沿程水头损失：式中：L--管段长度m5、局部损失（采用当量长度法）：(当量)式中：L(当

2、量)--管段当量长度，单位m(《自动喷水灭火系统设计规范》附录C)6、总损失：7、终点压力：管段名称起点压力mH2O管道流量L/s管长m当量长度管径mmK水力坡降mH2O/m流速m/s损失mH2O终点压力mH2O1-25.000.942.400.8025800.3851.771.236.232-36.231.993.702.1032800.3712.102.158.383-48.381.992.400.6050800.0440.940.138.5115-163.850.820.900.6025800.29

3、61.550.444.2916-174.290.823.400.8025800.2961.551.245.5417-185.541.813.352.1032800.3081.911.687.2118-47.212.940.353.0040800.3852.341.298.504-58.514.932.404.6080800.0280.990.208.7119-204.010.842.500.8025800.3091.581.025.0320-215.031.782.402.1032800.2981.881

4、.346.3721-226.372.841.852.7040800.3592.261.648.0023-227.271.130.720.6025800.5592.130.748.0122-58.003.970.353.7050800.1751.870.718.715-68.718.901.724.6080800.0931.790.599.3024-254.520.892.500.8025800.3481.681.155.6725-265.671.892.502.1032800.3362.001.557.2

5、226-67.223.022.103.0040800.4062.402.079.296-79.3011.922.405.4080800.1662.401.2910.5927-284.840.922.500.8025800.3731.741.236.0728-296.071.962.502.1032800.3602.071.667.7329-307.733.131.752.7040800.4352.491.949.6730-79.674.430.353.9050800.2182.090.9310.597-8

6、10.5916.361.086.10100800.0711.890.5111.108-911.1016.361.320.00100800.0711.890.0911.2031-325.120.952.500.8025800.3941.791.306.4232-336.422.012.502.1032800.3802.121.758.1733-348.173.211.752.7040800.4602.562.0512.2134-910.214.560.353.9050800.2302.150.9814.19

7、9-1011.2020.913.206.10100800.1172.421.0916.2835-369.551.302.501.2032800.1581.370.5815.1436-3710.142.641.752.7040800.3092.101.3717.5137-1011.513.060.353.9050800.1831.910.7819.2910-1112.2823.973.137.20100800.1672.881.7222.0111-1214.0123.976.221.30150800.054

8、1.880.4023.4112-1314.4123.970.400.00150800.0211.320.0124.4213-1414.4223.973.6729.6150800.0541.881.2026.62计算结果:所选作用面积:162.7平方米总流量:23.97L/s平均喷水强度:9.21L/min.平方米本层入口压力:26.62+2+48=76.62米水柱