Tuesday, 12 March 2019

Choosing the Right Vortex Tube – Max Refrigeration vs. Max Cold Temperature


The Vortex Tube is a low cost, reliable, maintenance free way to provide cooling to a wide variety of industrial spot cooling problems.
There are two (2) popular uses for the Vortex Tubes. One is to spot cool a warm item as fast as possible. The other is to chill an item to as low a temperature as possible. Because these are very different requirements, different Vortex Tube configurations exist to handle each.
For those applications of spot cooling, we recommend the 3200 series of Vortex Tubes. They are designed to be most efficient at providing maximum refrigeration, which is a function of high cold air flow rate and moderate temperature differential of the cold air to the warm item.
And for those applications of chilling an item to a very low temperature at low flow rate , we recommend the 3400 series of Vortex Tubes. They are designed to be most efficient at providing maximum cold air temperatures, but with a lower cold air flow rate.
An important parameter for the Vortex Tubes is the Cold Fraction. By adjusting the hot valve on a vortex tube, the amount of air that is discharged through the cold end changes. When expressed as a percentage of the total compressed air that is supplied to the vortex tube, we get the Cold Fraction. For example, if the hot valve is adjusted so that for every 10 parts of compressed air supplied, we get 7 parts of cold air, then we have a 70% Cold Fraction. When you know the Cold fraction setting and the compressed air supply pressure, you can use the Vortex Tube Performance tables and get the cold air discharge temperature.
Using the table below left, at 100 PSIG compressed air pressure and a 70% Cold Fraction, we can expect the cold air discharge temperature drop to be 71°F. With 70 ° compressed air temperature, the cold air will be at -1°F.



The 3200 series of Vortex Tubes are for use in the 50-80% Cold Fraction range, and the model 3400 series is designed for use in the 20-50% Cold Fraction ranges, to maximize the performance of each.
In summary, the selection of the Vortex Tube that best meets the application needs is based on the desired cold air flow rate, and the temperature of air desired. Once these are known, using the tables can provide the information needed to select the best option.
For those applications where we are unsure what will work best, we offer the EXAIR Cooling Kits, that include a Vortex Tube (small, medium, or large) and an array of Generators, to allow the configuration of the full range of Vortex Tubes within each size family.
  • Model 3908 – Small Vortex Tube Cooling Kit – build models 3202, 3204, 3208, and 3402, 3404, 3408
  • Model 3930 – Medium Vortex Tube Cooling Kit – build models 3210, 3215, 3225, 3230, 3240, and 3410, 3415, 3425, 3430, 3440
  • Model 3998 – Large Vortex Tube Cooling Kit – build models 3250, 3275, 3298, 3299, and models 3450, 3475, 3498, 3499

   




Thursday, 21 February 2019

Removing machine dust by Exair 120022 2" Aluminium Super Air Amplifier

Company manufactures welded tubing. Shavings are building up at the cutoff operation causing missed locations and tubes cut off to wrong length. Using the Model 1100 Super Air Nozzle to direct the shavings towards the  Model 120022 2"(51mm) Super Air Amplifier, the cut off area was vacuumed clear so the next part could be located properly. This eliminated short pieces.

Super Air Amplifier Performance at 80 PSIG (5.5 BAR)

Monday, 18 February 2019

Siphon Fed Atomizing Nozzles Selection

When we recommend an Atomizing Nozzle for a particular application, we try to obtain as much general information as possible about the application, such as:

What type of spray pattern do you need?
How wide of an area needs to be covered?
What kind of flow rate needs to be achieved?
Is the liquid source pressurized?
What is the viscosity of the liquid?
While all of this information is going to help simplify the selection process, when we get a reply that the liquid isn’t pressurized, the choice becomes a little less complicated.

Exair Siphon Fed Atomizing Nozzles are the preferred solution in applications where a pressurized liquid source isn’t available. With a steady supply of compressed air, these nozzles are able to draw the liquid into the nozzle with suction heights up to 36″ for our 1/8″ NPT and 1/4″ NPT nozzles, and up to 24″ for our larger 1/2″ NPT Models. They can also be gravity fed as well.

These nozzles mix the fluid internally and are capable of handling viscosity up to 200 centipoise. Depending on the size of the nozzle and supply air pressure, flow rates can range from 0.4 GPH up to 60 GPH with either a round or flat fan spray pattern. There is also an adjusting valve for more or less liquid flow as needed to fit the demand of the application.


Exair also offers these nozzles with the patented No Drip feature which positively stops the liquid flow when the supply air pressure drops below 30 PSIG, eliminating the need for any additional valves or supply lines.
If you have an application requiring a fine mist of atomized liquid, please contact us in below contact details.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 4170 1145
Mob : 097404 39220
E- mail : sales@vivekengineers.net , durga@vivekengineers.net

Saturday, 19 January 2019

Exair Soft Grip Super Air Scraper- removes the most stubborn debris found within industrial facilities

The patent pending design uses a scraping blade to assist the powerful compressed air flow removal of debris. Th is product is perfect for removal of caulk, gaskets, sealant, adhesives, tape, paint, stickers, labels, grease, lubricant and difficult to sweep metal chips, flakes or discs. It will help keep your machining tables, sub plate and assembly stations clean and functional.
The corrosion resistant steel scraper is attached to a 2" Flat Super Air Nozzle and a 3/4" extension provide the strength and durability necessary for many of your toughest cleaning and housekeeping challenges. Extensions for the Soft Grip Super Air Scraper are available from 6"-72" long to aid in cleaning table tops, inside machines, reaching the floor or other remote surfaces. Chip shields are also available.
Add An Extension Pipe

Add an Extension Pipe to your Soft Grip Super Air Scraper. Here's how:
1. Choose an EXAIR Soft Grip Super Air Scraper.
Example: Model 1244
2. To add an Aluminum Extension Pipe, create the model number by adding a dash and number of the appropriate extension length after the model of the Soft Grip Super Air Scraper.
Example: The Model 1244 Soft Grip Super Air Scraper with
a 36" (914mm) Aluminum Extension Pipe is a Model 1244-36.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 

Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 4170 1145  Mob : 097404 39220
E- mail :p.lochan@vivekengineers.net sales@vivekengineers.net , 
durga@vivekengineers.net

Thursday, 17 January 2019

2" Heavy Duty Line Vac Kit Circulates Sand and Rock Material

A manufacturer of vibratory separators built a small scale machine for display purposes and needed to move small gravel and sand at a rate of about 5 pounds per minute up a vertical height of 6 feet. This was to recirculate the material that they were showcasing.



 The solution was to use Model 152200 2" (51mm) Heavy Duty Line Vac Kit to pick up the material from the bottom of the collection bin and convey it back to the hopper on the top of the machine.


Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 

Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 4170 1145  Mob : 097404 39220
E- mail :p.lochan@vivekengineers.net sales@vivekengineers.net , 
durga@vivekengineers.net


Wednesday, 16 January 2019

360 Degree Static Eliminator is CE, UL and RoHS Certified


EXAIR's new Gen4 Super Ion Air Wipe provides a uniform 360 degree ionized air  stream that clamps around a continuously moving part to eliminate static electricity and contaminants. It is ideal for removing dust, particulates and personnel shocks on pipe, cable, extruded shapes, hose, wire and more. This engineered product has undergone independent laboratory tests to certify it meets the rigorous safety, health and environmental standards of the USA, European Union and Canada that are required to attain the CE and UL marks. It is also RoHS compliant. New design features include a metal armored high voltage cable to protect against abrasion and cuts, a replaceable emitter point, integrated ground connection and electromagnetic shielding.

The Super Ion Air Wipe uses a small amount of compressed air to entrain high volumes of room air. Two shockless ionizing points powered by a UL Component Recognized 5kV power supply fills the air stream with static eliminating ions. That airflow attaches itself to the surface of the material running through the air wipe and neutralizes the charge. 
         The Super Ion Air Wipe, which compliments EXAIR’s complete line of Gen4 Static Eliminators, has an aluminum construction that is lightweight and easy to mount using the tapped holes provided. Two sizes include a 2" (51mm) diameter and a 4" (102mm). There are no moving parts to wear out. Visit EXAIR.com to see the entire Gen4 Static Eliminator product line and 1/2" through 11" Super Air Wipes for applications without static.

Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 

Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 4170 1145  Mob : 097404 39220
E- mail :p.lochan@vivekengineers.net sales@vivekengineers.net , 
durga@vivekengineers.net

Tuesday, 18 December 2018

Chip Trapper - Filter the chips out of your used coolant and cutting oils!

The Exair Chip Trapper offers a fast, easy way to clean chips, swarf and shavings out of used coolants and other liquids. The Chip Trapper vacuums the coolant or liquid that is filled with debris and traps all the solids in a reusable filter bag. Only the liquid pumps back out. It is ideal for use on machines with sumps, parts washers, tanks and storage containers of contaminated liquids.

The Chip Trapper uses EXAIR’s compressed air powered Reversible Drum Vac (included) that can fill or empty a 55 gallon drum in less than two minutes. Simply set the Reversible Drum Vac pump and directional flow control valve on top of the drum to “fill” for it to quickly vacuum the liquid with solids. Once the sump, pit or tank is empty, set the pump and directional valve to “empty” for it to pump out clean coolant/liquid. All the chips and other solids are trapped inside the reusable filter bag of the Chip Trapper.

Chips can accumulate in the sump, restricting coolant flow.
The Chip Trapper pumps the coolant back into the sump – free of chips and debris.
Chip Trapper filters out solids from partswasher fluids.
Vivek Engineers#22, 1st Floor, 1st Cross, Adj. to IIMB Compound, Bilekahalli Indl. Area, 
Bannerghatta Road, Bangalore - 560 076.
Ph : 080 -  2648 1309, 4170 1145
TeleFax : 080- 2648 1309.
E- mail : sales@vivekengineers.net , durga@vivekengineers.net


Choosing the Right Vortex Tube – Max Refrigeration vs. Max Cold Temperature

The Vortex Tube is a low cost, reliable, maintenance free way to provide cooling to a wide variety of industrial spot coolin...