A company was contracted to clean electrostatic filters used in a commercial building. Electrostatic filters are designed to capture airborne particles to improve indoor air quality. They are washable and reusable. The capturing mechanism is a bit different than a typical furnace filter. It is done by using an Ionizing wire to place a positive charge onto the particles as they pass by. Then, the charged particles are collected on collection plates that are negatively charged. Like magnets, opposite charges attract. Over time, the particles will build up on the plates. The electrostatic filters generally need to be cleaned monthly to remove the grime of smoke, dust, and allergens. Once they are washed and dried, they can be placed back in the air ducts to start filtering again.
The contractor above used a cleaning solution to break down the contamination prior to rinsing and drying. They had to be careful with the electrostatic filters as the ionizing wires that are used to charge the particles are very thin and prone to breaking. If an ionizing wire breaks, it will not properly charge the particles and the filtration is reduced. So, manually cleaning was very difficult to perform. They contacted EXAIR to provide a solution.
When it comes to liquid spraying, EXAIR has a new line of liquid atomizing spray nozzles; FullStream™ and HollowStream™ Cone Nozzles. They are engineered to spin the liquid in order to break the surface tension. Passing through a precision orifice; the liquid will break into fine particles. Increasing the surface area will increase the liquid coverage on to a surface and reduce the amount of liquid required. For this application, I recommended the model HL1011SS; HollowStream Cone Nozzle. They were able to pass the electrostatic filters under the HL1011SS to clean the collection plates and ionizing wires. The force of the liquid was enough to clean the surfaces without damaging the thin wires. The contractor was so impressed by the effectiveness of the nozzle; he added the same nozzle to his rinsing system. With the EXAIR HollowStream Cone Nozzle generating small water particles, he was able to save money by using less water.
Here is a video with a residential electrostatic filter.
If you use liquids for washing, cleaning, or quenching; EXAIR has an effective and economical way to apply that material. We offer different flowrates and port sizes. The Liquid Atomizing Nozzles can handle liquid pressures up to 250 PSIG (17Bar) to get a hard-hitting force. They are made from 303 stainless steel which is durable and corrosion resistance; and, they can withstand temperatures up to 800oF (427oC). If you would like to discuss further the details of your liquid applications with an Application Engineer, we will be happy to hear from you.
The year was 2016, and it was quite a time for sports fans:
Team USA dominated at the Summer Olympics in Rio de Janeiro. Swimmer Michael Phelps won five Gold Medals, and gymnast Simone Biles won a Gold Medal on her own, and another for the team event, contributing to the 46 total Gold Medals won by United States Olympians.
The Chicago Cubs and Cleveland Indians took the World Series to all seven games…and extra innings in Game Seven. That makes it hard to disparage either team, but the Cubs prevailed, winning the Fall Classic for the first time in 108 years.
World Series heartbreak notwithstanding, Cleveland sports fans were pretty happy a few months earlier when the Cavaliers cinched the NBA Championship in seven games, defeating the heavily favored Golden State Warriors…who beat the Cavs in both of their regular season games that year.
Anyway, now it’s 2021, and the No-Drip version of that Atomizing Spray Nozzle – Model EF6010SS – has won Plant Engineering’s GOLD Medal Award in the Fluid Handling category. Model EF6010SS offers the same performance as the EF5010SS:
Liquid flow rates from 141 to 303 gallons per hour (tested with water)
Flat fan spray dimensions from 15″ wide (6″ from target) to 25″ wide (15″ from target)
Atomized spray at a distance of up to 35 feet away
And, of course, the No-Drip feature means you can instantly stop liquid flow by shutting off the compressed air supply, up to 180 cycles a minute, if needed. This is a great feature to have to cut down on the cost – and the MESS – associated with overspraying.
Our comprehensive line of Atomizing Spray Nozzles has options for most any liquid that can be sprayed, with a wide range of flow rates and pattern size/shapes. The 1/2 NPT External Mix Narrow Angle Flat Fan model is ideally suited for liquids with higher viscosities where a higher flow rate/thicker coating is needed, as opposed to a humidification or misting application, where a smaller Atomizing Spray Nozzle might be specified. Some current, successfully reported, applications include:
Snack food provider – applying flavoring to bulk snack materials.
Commercial bakery – spraying cooking oil onto pans used in a conveyor oven.
Sporting goods manufacturer – applying adhesive to the tops of skateboard decks to glue the grip tape on.
If you’d like to discuss a particular liquid spraying application, I’d love to help…give me a call.
Russ Bowman, CCASS
Application Engineer EXAIR Corporation Visit us on the Web Follow me on Twitter Like us on Facebook
At EXAIR, we know compressed air, and we’ve been helping customers around the world get the most out of their compressed air systems since 1983. It was only logical that, about ten years ago, we got into using compressed air for liquid atomization. If you’re looking to spray a liquid in a fine mist with a controllable pattern & flow rate, there are many advantages to using compressed air to atomize it:
Optimal, efficient consumption
Small droplet size
Since their introduction, EXAIR has come to offer 142 distinct models of Air Atomizing Spray Nozzles, and, along the way, we leveraged our engineering, machining, and manufacturing prowess to gain position as an industry leader in liquid spraying. So much so, that, earlier this year, we introduced a spraying product line that doesn’t require compressed air: the FullStream Cone Liquid Atomizing Nozzles. Instead of using the energy of compressed air to effect atomization, these use the energy of the liquid’s pressure and flow to change the continuous stream of liquid flow entering the nozzle into a conical spray as it exits to atmospheric pressure. Here’s how it works:
While Air Atomizing Spray Nozzles maintain their advantage of a smaller droplet size (ours consistently make droplets under 100 microns in size,) there are clear benefits in certain applications to the FullStream Cone Liquid Atomizing Nozzles:
Higher liquid flow rates
Increased liquid coverage
More compact design
These are all important in applications like quenching, cooling, foam breaking, lubricating, degreasing, and sanitizing. All stainless steel construction means they’ll stand up to a variety of chemicals…both in what’s being sprayed, and in the environment in which they’re installed.
EXAIR’sAtomizing Spray Nozzles are used to clean, coat, or cool parts and they also lend themselves very well to humidification and dust control. They are constructed from rugged and durable 303 SS to provide corrosion resistance and they can operate in temperatures up to 400°F (204°C). All EXAIR Atomizing Spray Nozzles are also CE compliant.
Centipoise is defined as a dynamic viscosity measurement unit. A Centipoise (cP) is a non-SI (non-System International) measurement unit of dynamic viscosity in the centimeter gram second (CGS) system of units.