Hazardous Location Enclosure Cooling Solutions

Combustible vapors, liquids, gases or flammable dusts are often present in many industrial applications. These materials are safe in small amounts, but when they exist in abundance they become a hazard, with the possibility to wreak havoc on production processes and endanger the lives of employees.

With the implementation of the correct equipment, these costly hazards can be contained and controlled, making an explosion or large fire avoidable.

For electrical enclosures that are located in these potentially hazardous locations, Vortec’s line of Hazardous Location Vortex A/C units are an excellent addition to keep expensive equipment safe and keeps stray sparks away from hazardous materials.

What Makes Vortec’s Hazloc Vortex AC’s Superior?

The Hazardous Location Vortex ACs are designed to cool industrial control cabinets located in hazardous locations. They use only filtered and dried compressed air to generate cooling air inside the cabinets. The lack of moving parts on vortex ac units eliminates the need for extensive maintenance and make the units extremely reliable.

Hazardous Location Enclosure Cooler Specs

Hazardous Location Vortex Enclosure A/C’s special features include: 

  • Sleek, modern design
  • Noise reduction of 78%, when compared to other vortex enclosure coolers
  • Requires no refrigerants
  • Energy use reduction through its integral mechanical thermostat
  • Quick and easy installation, complete in about 5 minutes
  • Flexible installation: top, side or front (door) mount
  • Incorporates check valve to prevent loss of enclosure pressure when cooling is not required

Hazardous location units come in three different hazardous location ratings with different cooling capacities to fit any application’s specific needs.

Product Name

Thermostat

System

Cooling Capacity (BTUH)

Air Consumption (SCFM)

Sound Level

Item Number

ProtEX

 

Mechanical

System

900

15

60 dBA

8115

 

1500

25

66 dBA

8125

 

2500

35

72 dBA

8135

 

5000

70

75 dBA

8170

HazLoc

Mechanical

System

900

15

60 dBA

7515

 

1500

25

66 dBA

7525

 

2500

35

72 dBA

7535

 

5000

70

75 dBA

7570

HazLoc

Mechanical

Cooler only

900

15

60 dBA

7215

 

1500

25

66 dBA

7225

 

2500

35

72 dBA

7235

 

5000

70

75 dBA

7270

ATEX

Mechanical

System

900

15

60 dBA

7415

 

1500

25

66 dBA

7425

 

2500

35

72 dBA

7435

 

5000

70

75 dBA

7470

ATEX

Mechanical

Cooler only

900

15

60 dBA

7315

 

1500

25

66 dBA

7325

 

2500

35

72 dBA

7335

 

5000

70

75 dBA

7370

 

How Do They Work?

Vortec was the first to harness vortex tube technology in 1961 and adapted it into a practical and effective industrial cooling solution.

Each of the hazardous location vortex AC’s operate by using the patented vortex tube technology, which has been perfected for use in hazardous locations. A cylindrical generator uses compressed air to spin the compressed air, also known as a vortex, which separates air into hot and cold air streams.

The compressed air rotates at speeds up to 1,000,000,000 revolutions per minute, as it is forced down the inner walls of the hot end of the vortex tube. At the end of the hot tube, a small amount of air exits through a valve as hot air exhaust.

The remaining air is forced back through the center of the incoming air stream at a slower speed. The heat in the slower moving air is forced back through the center of the incoming air stream at a slower speed. The heat in the slower moving air is transferred to the faster moving incoming air. This super-cooled air flows through the center part of the generator and exits through the cold air port which then keeps the enclosure cool.

Vortex Tube Technology Explanation

Certifications

The National Electrical Code (NEC) is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States.

The NEC defines hazardous locations as areas "where fire or explosion hazards may exist due to flammable gases or vapors, liquids, combustible dust, or ignitable fibers or flyings."

ATEX is the name commonly given to the two European Union directives for controlling explosive atmospheres. It is a similar agency to the NEC.  Certification from these agencies ensure that equipment or protective systems are fit for their intended purpose and that adequate information is supplied with it to ensure that it can be used safely.

Special equipment must be used in these locations to prevent hazardous materials from becoming explosive or ignited. It is imperative that buyers understand the ratings that safety organizations have defined as safe equipment in these locations.

Using the correct electrical cabinet components will help to ensure the safety of employees, the prevention of property damage and the loss of profits associated with explosions and fires on industrial locations.

Both the NEC and ATEX have made a set of standards for equipment which separates different environments into classes, divisions/zones and groups to separate and define hazardous materials. Zones and group zones are specific to ATEX ratings and divisions are specific to NEC ratings for North America.  

 

Hazardous Material

Class/ Division

Zone System *

Groups

Group Zones *

Gases or Vapors

(acetylene, hydrogen, ethylene, propane)

Class I, Division 1

Class I, Division 2

Zone 0, Zone 1, Zone 2

A, B, C, D

II C, II B, II A

Combustible Dusts

(electrically conductive dusts, carbonaceous dusts, agricultural dusts)

Class II, Division 1

Class II, Division 2

Zone 20, Zone 21

Zone 22

E, F, G

No Equivalent

Fibers or Flyings

(cotton lint, flax, rayon)

Class III, Division 1

Class III, Division 2

No Equivalent

No Equivalent

No Equivalent

* Only applicable in European Countries                            

 

Vortec’s Hazardous Location Vortex A/Cs Ensure Reliable Operation in these Environments:

  •         Petroleum refineries                             
  •         Spray finishing
  •         Utility gas plants
  •         Chemical plants
  •         Fuel serving areas
  •         Grain elevators
  •         Feed mills
  •         Textile mills

Vortec’s Hazloc Vortex A/Cs are certified to cool enclosures in Class I Div 2 Groups A, B, C and D, Class II Div 2 Groups F&G, and Class III locations. They are safe for temperature class T4.

Vortec’s ProtEX Vortex A/Cs are certified to cool enclosures in ATEX Zones 1 & 21, are UL Classified for Class I, Division 1, Groups A, B, C and D, Class II, Division 1, Groups F and G, Class III and are safe for T3 temperature class areas.

Vortec’s ATEX Vortex A/Cs are certified to cool enclosures in ATEX Zones 2 & 22 and T4 temperature class Areas (Ex II 3 GD T4).

Vortec’s HazLoc, ATEX and ProtEX Vortex AC models require the use of an approved purge and pressurized system to maintain the hazardous location ratings. The purge system in not included with purchase.

Written by: ISC

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