Final answer:
The A.I.R. system without an air pump uses entrainment devices that harness fluid dynamics to draw one fluid into another, relying on pressure changes rather than mechanical pumping.
Step-by-step explanation:
The Air Injection Reaction (A.I.R.) system without an air pump uses a different principle called entrainment, which is a process that involves one fluid being drawn into another due to a change in pressure. This principle is applied in various devices:
- Bunsen burners adjust their gas nozzles to entrain air for proper combustion.
- Atomizers, such as those for perfume, use a squeeze bulb to create a jet of air that entrains liquid droplets.
- A common aspirator uses a high-speed stream of water to create a region of lower pressure, entraining air or other fluids for suction or drainage purposes.
- The chimney of a water heater is designed to entrain air to ensure the efficient exhaust of gases.
By utilizing these principles, the A.I.R. system can operate effectively without the need for a mechanical air pump.