Ductwork

Some articles on ductwork:

Process Duct Work - Structural Process Ductwork
... Structural process ductwork carries large volumes of high temperature, dusty air, between pieces of process equipment ... The design of this ductwork requires an understanding of the interaction of heat softening of metals, potential effects of dust buildup in large ductwork, and ... there are two basic shapes for structural process ductwork, rectangular and round ...
Area Of Refuge - Technical Requirements
... such fresh air is referred to as pressurisation ductwork ... Such ductwork are items of passive fire protection, subject to fire testing, product certification, and listing and approval use and compliance ... The idea is that the ductwork must remain operable even while exposed to fire for a duration stipulated for each occupancy by the local building code ...
Duct Leakage Testing - Additional Test Methods - Duct Leakage To Outside
... duct leakage, how much leakage there is for all of the ductwork connected to the HVAC system ... Energy conservation is really only achieved by sealing ductwork that is outside the thermal envelope or connected to the outside ... to the outside by simultaneously pressurizing the house while pressurizing the ductwork and measuring the amount of flow that is required to equalize the pressure ...
Duct Leakage Testing
... air heating, ventilating and air-conditioning (HVAC) ductwork ... flow measurements are used to determine the ductwork airtightness ... The airtightness of ductwork is useful knowledge when trying to increase energy conservation ...
Duct Leakage Testing - How Duct Leakage Testers Work - Leakage Area
... the cumulative size of all leaks or holes in the ductwork ... Commercial and industrial ductwork is often tested to standards developed by the Sheet Metal Air Conditioning Contractors' National Association, SMACNA ... Ductwork is subjected to higher pressures and then given a rating or classification rather than a leakage estimate ...