The pressure in a natural gas pipeline is measured by the...

The pressure in a natural gas pipeline is measured by the manometer shown in Fig. $\mathrm{P} 1-69 \mathrm{E}$ with one of the arms open to the atmosphere where the local atmospheric pressure is 14.2 psia. Determine the absolute pressure in the pipeline.

Key Concepts

Manometer

A manometer is an instrument that measures pressure by balancing a column of liquid against the pressure of the system being measured. It uses the hydrostatic principle where a difference in fluid column heights represents a difference in pressure between two points, making it a fundamental tool for pressure measurements in various engineering applications.

Absolute Pressure

Absolute pressure is the total pressure exerted by a system measured relative to a perfect vacuum. Unlike gauge pressure, which is measured relative to atmospheric pressure, absolute pressure includes the atmospheric component, making it essential for applications where the complete pressure picture is required for analysis or design.

Hydrostatic Pressure

Hydrostatic pressure refers to the pressure exerted by a fluid at rest due to the force of gravity. In a manometer, the difference in the height of the liquid columns reflects the hydrostatic pressure difference, which is used to calculate the pressure of the fluid in the system under investigation.

Gauge Pressure

Gauge pressure is the pressure measured relative to the ambient atmospheric pressure. When a manometer or other pressure measuring instrument references atmospheric pressure, the reading is given as gauge pressure, and it is converted to absolute pressure by appropriately adding or subtracting the atmospheric pressure.

Transcript

Please give Ace some feedback