Is it true that a higher value E.H.D. indicates greater gas capacity of tubing?

A higher value of Equivalent Hydraulic Diameter (E.H.D.) indeed indicates a greater gas capacity of tubing. E.H.D. is a measure used in fluid mechanics that represents the effective diameter for a non-circular duct or piping system where the internal flow characteristics might differ from circular tubes.

When the E.H.D. is larger, it means that the cross-sectional area available for the gas flow is increased, allowing for a greater volume of gas to pass through the tubing. This is crucial in HVAC applications where efficient gas transport is necessary for performance and system reliability.

This principle allows engineers and technicians to assess the performance of tubing in transporting gases effectively, ensuring systems can meet design and operational standards. Understanding the relationship between E.H.D. and gas capacity is vital for optimizing HVAC system designs and achieving effective ventilation or heating gas flow.