Question

A water-filled manometer is used to measure the pressure in an air-filled tank. One leg of the manometer is open to atmosphere. For a measured manometer deflection of 5 m of water, determine the tank static pressure if the barometric pressure is 101.3 kPa absolute.

(a) 140 kPa absolute

(b) 150 kPa absolute

(c) 160 kPa absolute

(d) 170 kPa absolute

Answer 1

`P = 150.335\,kPa` (Option B)

Step-by-step explanation:

The absolute pressure of the air-filled tank is:

`P = 101.3\,kPa + \left(1000\,(kg)/(m^(3)) \right)\cdot \left(9.807\,(kg)/(m^(3)) \right)\cdot (5\,m)\cdot \left((1\,kPa)/(1000\,Pa) \right)`

`P = 150.335\,kPa`