1mmH2O=9.8Pa是多大压力? 1mm水柱等于多少帕，1mm水柱等于多少帕知识
1mmH2O\u7b49\u4e8e\u591a\u5c11MPa?1\u6807\u51c6\u5927\u6c14\u538b=1.013\u00d710^5Pa=\u6c34\u7684\u5bc6\u5ea6*\u91cd\u529b\u52a0\u901f\u5ea6*\u6c34\u67f1\u9ad8\u5ea6=1.0\u00d710^3kg/m^3\u00d79.8N/kg\u00d7\u6c34\u67f1\u9ad8\u5ea6\uff0c \u3000\u3000\u5219\u6c34\u67f1\u9ad8\u5ea6\u224810.33673469\u7c73\u3002
\u75281.013\u00d710^5Pa\u9664\u4ee510.33673469\u7c73\uff0c\u6362\u7b97\u62101mm\u6c34\u67f1\u52191mmH2O\u7b49\u4e8e9.8Pa=0.0000098MPa
1mm\u6c34\u67f1\u7b49\u4e8e9.8pa\u3002
\u89e3\uff1a\u56e0\u4e3a\u538b\u5f3aP=F/S=mg/S=\u03c1Sh*g/S=\u03c1gh\u3002\u4e14\u6c34\u7684\u5bc6\u5ea6\u03c1=1g/cm^3\uff0c\u91cd\u529b\u5e38\u6570g=9.8N/kg\uff0c
\u90a3\u4e481mm\u6c34\u67f1\u7684\u538b\u5f3a\u4e3a\uff0c
P=1g/cm^3x9.8N/kgx1mm
=1x10000kg/m^3x9.8N/kgx0.001m
=9.8Pa
\u53731mm\u6c34\u67f1\u7b49\u4e8e9.8pa\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u538b\u5f3a\u5355\u4f4d\u53ca\u76f8\u4e92\u7684\u6362\u7b97
\uff081\uff09\u538b\u5f3a\u7684\u5355\u4f4d\u6709\u5146\u5e15\u3001\u5343\u5e15\u3001\u5e15\u3001\u5df4\u3001\u6beb\u7c73\u6c5e\u67f1(mmHg)\u4ee5\u53ca\u6807\u51c6\u5927\u6c14\u538b\u3002
\uff082\uff09\u538b\u5f3a\u5355\u4f4d\u7684\u6362\u7b97
1 MPa\uff08\u5146\u5e15\uff09=1000 kPa\uff08\u5343\u5e15\uff09=1000000 Pa\uff08\u5e15\uff09
1bar\uff08\u5df4\uff09=0.1MPa\uff08\u5146\u5e15\uff09=100000Pa\uff08\u5e15\uff09
1 atm\uff08\u6807\u51c6\u5927\u6c14\u538b\uff09=101325Pa
1 atm\uff08\u6807\u51c6\u5927\u6c14\u538b\uff09=760mmHg
2\u3001\u538b\u5f3a\u6d4b\u91cf\u5de5\u5177
\u6d4b\u91cf\u538b\u5f3a\u7684\u4eea\u5668\uff0c\u6700\u5e38\u89c1\u7684\u6709\u6c34\u94f6\u6c14\u538b\u8868\u548c\u7a7a\u76d2\u6c14\u538b\u8868\u4e24\u79cd\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u538b\u5f3a\u5355\u4f4d
1标准大气压=1.013×10^5Pa=水的密度*重力加速度*水柱高度=1.0×10^3kg/m^3×9.8N/kg×水柱高度， 则水柱高度≈10.33673469米。
用1.013×10^5Pa除以10.33673469米，换算成1mm水柱则1mmH2O等于9.8Pa=0.0000098MPa.
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绛旓細1鏍囧噯澶ф皵鍘=1.013脳10^5Pa=姘寸殑瀵嗗害*閲嶅姏鍔犻熷害*姘存煴楂樺害=1.0脳10^3kg/m^3脳9.8N/kg脳姘存煴楂樺害锛 鍒欐按鏌遍珮搴︹増10.33673469绫炽傜敤1.013脳10^5Pa闄や互10.33673469绫筹紝鎹㈢畻鎴1mm姘存煴鍒1mmH2O绛変簬9.8Pa=0.0000098MPa
绛旓細绛変簬0.000098bar銆傚帇寮哄崟浣嶅強鐩镐簰鐨勬崲绠楋紝1mm姘存煴绛変簬9.8pa锛1bar锛堝反锛=0.1MPa锛堝厗甯曪級=100000Pa锛堝笗锛夛紝1mmh2o=9.8pa=0.000098bar銆傚帇寮虹殑鍗曚綅鏈夊厗甯曘佸崈甯曘佸笗銆佸反銆佹绫虫睘鏌(mmHg)浠ュ強鏍囧噯澶ф皵鍘嬨
绛旓細1225pa 1mm 姘=9.8 pa
