How do I determine the pipe sizing for a 4-pipe heating and cooling plant?

Pipe sizing for a 4-pipe system depends on factors such as the flow rate, pressure drop, and temperature differences between the supply and return lines. A thorough analysis of the building’s heating and cooling loads, as well as the equipment’s specifications, is necessary to determine the appropriate pipe sizes. It’s recommended to consult with a mechanical engineer or use industry-standard pipe sizing software to ensure accurate calculations.