I have recently had the pleasure of working with a customer developing a method of delivering air to trapped miners during a multi-man mine rescue mission. The federal government mandates that in the event of an explosion, miners must have a safe place to retreat for a minimum of 96 hours. This system will provide them with a supply of air during that period of time. In the initial stages, they had tried using some old venturis left over from a previous project. While this did work, they weren’t as effective or efficient as they needed. Through a little bit of research, they found EXAIR.
Instead of using compressed air as the source, they’re using cryogenic liquid air. That air passes through a series of cold plates and heat exchangers and gets to the Super Air Amplifier at about 70°F. This air is then carried into the chamber, giving the miners a source of clean air.
EXAIR Super Air Amplifiers utilize a patented shim design that allows the unit to entrain ambient air at a rate of up to 25:1 from the compressed air supply. This balanced outlet airflow minimizes wind shear, producing sound levels that are typically three times quieter than other air movers. The Super Air Amplifiers are supplied with a .003” slotted air gap and can be adjusted by replacing the shim with a thicker .006” or .009” shim.
Do you have a cooling or drying application that could benefit from a Super Air Amplifier? Contact an Application Engineer today to find out how EXAIR can help you save compressed air in your application!
If you were to look at a graphical representation of the exports from some countries (such as Chile), copper, copper alloys, and other metals would dominate over 50% of the graph. In order to get all of those metals exported out of the country, they first have to be mined and, in many cases, separated from other, undesirable items, such as rocks or dust. And, in order to separate the materials, many end users place the products on a conveyor and blow off what isn’t wanted.
We receive calls and emails at EXAIR regularly for these types of applications. Recently, I received one such email about an application in need of dust and dirt removal from a conveyor during a mining operation. The conveyor belt had become overrun with dirt and debris that couldn’t be removed by conventional means. So, the end user sought an alternative, and permanent solution.
It was at this point that the Super Air Knife was considered, and after measuring the width of the conveyor we realized a stock model 110018 would work well. Following installation of the Super Air Knife, the dust and dirt was removed to within an acceptable level, and the end user sent me the pics below.
If you have an application that may benefit from an EXAIR solution, contact one of our Application Engineers.