Atmospheric Gas-Burner System - Automotive Dictionary

Definition: An atmospheric gas-burner system is a type of burner used in combustion systems where the natural draft and gas flow are used to mix air and gas for combustion. It relies on the momentum of the gas to draw in the necessary air for burning.
Components and Operation:
Gas Injector: The system includes a gas injector, which is designed to direct a flow of gas into a combustion chamber.
Injector Throat: The gas passes through a constricted section known as the injector throat. The high velocity of the gas through this narrow section creates a partial vacuum.
Air Inspirator: The partial vacuum or low pressure in the throat region draws in ambient air necessary for the combustion process.
Natural Draft: The system often relies on natural draft, which means the movement of air is driven by natural atmospheric conditions rather than forced air (like a fan).
Advantages:
Simplicity: The design is relatively simple and does not require mechanical means to mix air and gas.
Cost-Effective: Fewer moving parts can result in lower costs and maintenance compared to systems that use mechanical air fans.
Applications:
Residential and Commercial Heating: Commonly used in gas-fired heaters, water heaters, and other appliances where natural draft and simple gas-air mixing are suitable.
Industrial Use: Applied in processes where reliable and efficient mixing of air and gas is required without complex control systems.
Limitations:
Efficiency: The reliance on natural draft can limit control over the combustion process, which may affect efficiency and emissions.
Environmental Conditions: Performance can be influenced by changes in atmospheric conditions and the design’s ability to handle varying pressures and temperatures.

The atmospheric gas-burner system represents an approach where natural principles of fluid dynamics are utilized to achieve effective combustion, balancing simplicity and functionality in various applications.

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