3.2. Gauge Pressure in Water Distribution Systems

Try these first

1. 1.

   What is gauge pressure?

   Hint

   Think about how it differs from absolute pressure.

2. 2.

   What does a barometer measure?

   Hint

   Remember, it uses mercury as a standard.

3. 3.

   What does gauge pressure exclude from its calculations?

   • Atmospheric pressure
   • Total pressure
   • Fluid density

   Hint

   Focus on what gauge means.

4. 4.

   True or False: A barometer can measure both gauge and absolute pressure.

   • True
   • False

   Hint

   Remember the function of a barometer.

5. 5.

   You have a water distribution system with fluctuating pressures. If the pressure at one point is 600 kPa and another is 200 kPa, calculate the height difference in a manometer where water is used.

   Hint

   Determine the density and remember to convert kPa to Pa.

6. 6.

   In a lab, a gas is stored at 500 kPa at room temperature. If a new ideal gas at 1000 kPa is introduced, use the ideal gas law to find out how they interact at constant volume.

   Hint

   Focus on keeping volume constant and explore pressure changes.