Question

8. The figure shows a tank within a tank, each containing air. Pressure gage A, which indicates pressure inside tank A, is located inside tank B and reads 5 psig (vacuum). The U-tube Pa 14.7 psia Tank B manometer connected to tank B contains water with a column length of 10 in. Using the data shown on the figure, determine the absolute pressure of the air inside tank B and inside tank A, both in psia. The atmospheric pressure surrounding tank B is 14.7 psia. The acceleration of gravity is g 32.2 ft/s 110 in Tank A Gage A Water ip- 62.4 h/) g= 32.2 s Porc. A5 psig (vacuun)

Answer 1

end Appy pressure equaton from tank o to open the manometei Pe PLtPatm ofLoate dnty accelesaton due to lengrf of he tes column. L Solastitute P E 62. 4 db Р4s ok lox 14 psia (or 14.x 4bP2 or Patm X 32.2 Ft X 31-2lb (0x PA) t4.x14b 52 t26.g 2168.& lb 2168. 8 x 4Ч PR =IS. 06 psia the absdute pressure of e cîr înside a S. 06

va ccum and Relation betwen absolute od mospheric pressure for tank A Patm-PAv Pabs.A vaccum Heu ,the tank g fs located tank A atmasphesic pressure of be Re Hence, the presure intank B PR- PA vaccum Pabs,A IS. o6-S Pabs, A lo 06 pSTa of the ir insle The absolute preure 10.061 psia tank A