By Gary Wamsely, Engineering Consultant, JoGar Energy Services
During an Energy Review at a relatively new health care garment factory, in the Southwest, we found all three of the 100 psig nominally rated rotary screw air compressors were operating at 115-120 psig continuously. We asked the Production Superintendent if this was normal or if something had recently changed. He explained that initially they operated two air compressors but had to begin running the 3rd unit in ‘trim’ mode after some converting machines were up-graded. Then, a new larger converting machine was
Traditionally, engineers have specified a variety of piping materials for compressed air systems, including black iron, galvanized steel, copper, stainless steel and even plastic. More recently, aluminum piping has become an option considered by many contractors, architects and engineering firms. Aluminum piping makes sense for compressed air systems in many different applications.
Black iron and galvanized steel pipe are two common types of pipe used for compressed air systems. More than 60% to 70% of all compressed air systems installed today use black iron or galvanized pipe, due to a variety
Aluminium piping has many benefits, but the characteristic that has seen its popularity surge in recent years is versatility. Ease of installation and overall cost savings have made it the preferred choice in a range of industries, leading to its use in a number of applications; with fire, water and air being three of the most common.
Aluminium is lightweight, robust and able to withstand high temperatures. This makes it ideal for use in fire protection systems, which are a crucial aspect of the emergency response to building fires. Fire
System #1: Contact
“Contact” is defined in the code as, “the process where compressed air is used as a part of the production and processing including packaging and transportation of safe food production.” Another way of defining this is simply if compressed air comes into direct contact with food products. If this is the case, the end user must know that the compressed air must be purified to the “Contact” purity-level as defined in the Code. We often hear the term “incidental contact” used in the U.S. This is an ambiguous