Which factor is NOT considered in the sizing of gas systems?

When sizing gas systems, several key factors are taken into account to ensure safe and efficient operation. One critical aspect is the allowable pressure drop, which ensures that the gas can be delivered to the end user at adequate pressure levels for proper appliance function. The specific gravity of gas is also important, as it determines the gas's buoyancy compared to air, influencing the sizing and installation of the gas system.

The diversity factor plays a role by accounting for varying demand levels from different appliances, allowing for optimization in system sizing based on expected usage patterns.

The temperature of the gas, while it can affect the physical properties of the gas and its flow characteristics, is generally not a primary factor in the actual sizing calculations for gas systems. Instead, factors like pressure drops, specific gravity, and the diversity factor have more direct impacts on determining the size and capacity of pipes and components in a gas system, making the temperature of the gas not essential for sizing decisions.