What size K or L semi-rigid copper tubing should be installed to supply 205 cu. ft. of gas per hour at a specific gravity of 0.60?

To determine the appropriate size of K or L semi-rigid copper tubing needed to supply 205 cubic feet of gas per hour at a specific gravity of 0.60, it is crucial to consider the relationship between the flow rate of gas, the physical properties of the tubing, and the pressure drop that can be tolerated.

The correct answer is based on the capacity ratings of copper tubing sizes. For gas flow applications, the size of the tubing directly affects the amount of gas that can be transported without significant pressure loss. In general, larger diameter tubing allows for greater flow capacity and reduced friction losses.

In the context of delivering 205 cubic feet of gas per hour, 1 inch diameter tubing is typically sufficient for this level of demand while ensuring that pressure drop remains within acceptable limits. This size allows adequate flow and minimizes resistance, thereby maintaining a consistent and reliable gas supply.

The smaller sizes, such as 1/2 inch or 3/4 inch, would likely result in excessive pressure drop given the flow rate, which can lead to inadequate gas supply pressure at the appliance endpoints. While 1 1/4 inch tubing would certainly be capable of handling this flow, it is larger than necessary for the specified demand, potentially leading to higher