What is the primary purpose of a venturi in gas appliances?

The primary purpose of a venturi in gas appliances is to mix air with gas for efficient combustion. The venturi effect operates on the principle that as gas flows through a constricted section of pipe, its velocity increases while its pressure decreases. This reduction in pressure creates a vacuum that can draw air into the gas stream, promoting optimal mixing of air and gas. This mixture is crucial for achieving efficient combustion within the appliance, leading to more effective operation and better energy efficiency. Proper mixing ensures that the combustion process is complete and minimizes the production of harmful emissions.

The other options relate to functions that a venturi does not perform, making them less relevant in this context. For instance, measuring the temperature of the gas would typically be done using a thermometer or a temperature sensor, rather than through a venturi. Similarly, while adjusting the pressure of gas lines is important, it is more often managed through regulators rather than via the venturi mechanism. Lastly, enhancing gas storage capabilities is not within the scope of what a venturi does, as gas storage typically involves tanks and other containment systems designed to safely hold gas.