I came across this Autodesk forum post: [ Link ] about Natural Gas while in the process of creating my own Natural Gas tools to use. I ended up using Hydronic Supply and brute-force converting my CFH input into GPM and back again to write and read flow values. It ends up working pretty well for simple schedules and tags, but no flow or pressure drop calculations are available. I can't stress enough how important natural gas, medical gas, propane, and other compressible gases are for MEP design. Basically every kitchen in the US has natural gas service. Lots of commercial properties use natural gas for heating. Natural gas is also used for water and space heating in multifamily blocks. What I'm asking for is a simple way to input MBH or CFH load for each piece of equipment, follow the flow around, see pressure drop on a line, size, pressure drop through regulators, valves, etc. , and a collector equipment such as a gas meter. This works the exact same in principle as an air handler with air terminals, but the equations are slightly different (to my understanding Revit assumes non-compressible airflow for HVAC). Please VOTE on this post to help our Plumbing Designers get into the Revit workflow.
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