Diagnosing airflow problems in an HVAC system can be a frustrating and intimidating task. When airflow problems arise without a defined troubleshooting approach, you’ll likely end up guessing at the ...

A strain-amplification phenomenon sometimes associated with pressure surges in liquid petroleum pipelines may cause a latent defect in a pipeline to fail at an unexpectedly low pressure. Pipeline ...

Learn what happens in the duct. Understand static pressure, velocity pressure, total pressure, dynamic loss, and friction losses—in practical terms that you can use on the job. Learn how duct fittings ...