天正喷淋计算原理参照.pdf

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1、计算原理参照《自动喷水灭火系统设计规范GB50084-2001》(2005年版)基本计算公式：1、喷头流量：qK10P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：4qxhv2Dj式中：Q--管段流量L/sDj--管道的计算内径（m）3、水力坡降：2vi0.001071.3dj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：h沿程iL式中：L--

2、管段长度m5、局部损失（采用当量长度法）：h局部iL(当量)式中：L(当量)--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：hh局部h沿程7、终点压力：hn1hnh管段起点压管道流管长当量管径K水力坡降流速损失终点压力名称力mH2O量L/sm长度mmmH2O/mm/smH2OmH2O1-27.001.112.400.8025800.5392.091.728.722-38.722.351.202.1032800.5192.481.7110.4429-307.001.112.400.8025

3、800.5392.091.728.7230-38.722.351.202.1032800.5192.481.7110.443-410.444.700.303.1050800.2452.210.8311.274-511.274.702.402.1050800.2452.211.1012.37131-327.581.162.400.8025800.5842.181.879.4532-339.452.451.202.1032800.5622.581.8511.3134-357.601.162.400.8025800.5

4、852.181.879.4735-339.472.451.202.1032800.5632.581.8611.3333-511.314.900.303.7050800.2662.311.0612.375-612.379.601.304.6080800.1081.930.6413.016-713.019.605.252.1080800.1081.930.7913.807-813.809.600.702.9080800.1081.930.3914.1936-375.901.023.100.8025800.4541.9

5、21.777.6737-387.672.183.402.1032800.4472.302.4610.1338-3910.133.521.552.7040800.5512.802.3412.4740-417.981.193.000.8025800.6152.242.3410.3241-3910.322.541.452.1032800.6032.672.1412.4639-812.476.060.303.9050800.4062.851.7114.188-914.1915.662.806.10100800.0661.

6、810.5814.7742-436.141.043.100.8025800.4731.961.847.9943-447.992.233.402.1032800.4662.352.5610.5544-4510.553.591.552.7040800.5742.862.4412.9946-478.311.213.000.8025800.6402.282.4310.7447-4510.742.591.452.1032800.6282.732.2312.9745-912.996.180.303.9050800.4232.

7、911.7814.779-1014.7721.842.806.10100800.1272.521.1315.9048-498.571.233.100.6025800.6592.322.4411.0149-5011.012.623.402.7040800.3062.091.8712.8750-5112.874.131.553.1050800.1891.940.8813.7552-538.801.253.000.8025800.6782.352.5811.3853-5111.382.661.452.1032800.6

8、652.812.3613.7451-1013.756.790.303.9050800.5113.202.1515.9010-1115.9028.632.806.10100800.2193.311.9517.8511-1217.8528.633.300.00100800.2193.310.7218.5812-1318.5828.632.800.00100800.2193.3