文档介绍：(a)thegaugepressureand(b)theabsolutepressureofwateratdepth12mbelowthesurface?ρwater=1000kg/m3,andPatmosphere=101kN/:-4Setthepressureofatmospheretobezero,,(甲烷),thatliquidCinthereservoirsiskerosene(specificgravity=),,.,whatisthepressuredifferenceovertheinstrumentInmetersofwater,(a)whenthechangeinthelevelinthereservoirsisneglected,(b)ount?Whatisthepercenterrorintheanswertothepart(a)?Solution:pa=1000kg/m3pc=815kg/m3pb==8R=,hangesinthereservoirsandUtubes(1)so(2)andhydrostaticequilibriumgivesfollowingrelationship(3)so(4)substitutingtheequation(2)forxintoequation(4)gives(5)(a)whenthechangeinthelevelinthereservoirsisneglected,(b)ounterror=-tubemanometersfixedonthefluidbedreactor,-tubemanometersareR1=400mm,R2=50mm,,andtheheightR3=:ThereisagaseousmixtureintheU-,,equationabovecanbesimplified= =1000××+13600××=7161N/m²=7161+13600××=60527N/,