A steam injector operates on which principle?

A steam injector operates on which principle?

• A. Venturi principle
• B. Bernoulli principle
• C. Pascal's principle
• D. Archimedes principle

Answer: (A)

Venturi principle explains how a steam injector works. When steam is forced through a converging nozzle into a narrow throat, its velocity increases and the static pressure drops. That drop in pressure at the throat pulls in feedwater from the surrounding supply. The incoming water mixes with the steam, and as the mixture expands through a diffuser, its velocity decreases and its pressure rises, delivering the water at a higher pressure than the original feedwater. This jet-venturi action uses the energy of the steam to entrain and pump the water, and it’s a practical application of Bernoulli’s principle.

Venturi principle explains how a steam injector works. When steam is forced through a converging nozzle into a narrow throat, its velocity increases and the static pressure drops. That drop in pressure at the throat pulls in feedwater from the surrounding supply. The incoming water mixes with the steam, and as the mixture expands through a diffuser, its velocity decreases and its pressure rises, delivering the water at a higher pressure than the original feedwater. This jet-venturi action uses the energy of the steam to entrain and pump the water, and it’s a practical application of Bernoulli’s principle.