Cabinet coolers from Exair provide a low-cost, reliable way to cool and purge electronic control panels. Their functioning employs a vortex tube to produce cold air from compressed air, with no moving parts. The compact units can be installed in minutes through a standard electrical knockout. NEMA 4, 4X and 12 cabinet coolers are available in many cooling capacities for large and small control panels.
The vortex tubes incorporated in the coolers are constructed of stainless steel, whose wear, corrosion and oxidation resistance ensures long life and maintenance-free operation.
How the cabinet coolers work
Compressed air enters the vortex tube and is converted into two streams, one hot and one cold. Air from the vortex tube is muffled and exhausted through the vortex tube exhaust, while cold air is discharged into the control cabinet through the cold air distribution kit. The displaced hot air in the cabinet rises and exhausts to atmosphere through the cabinet air exhaust at a slight positive pressure. Thus, the control cabinet is both cooled and purged with cool, clean air and outside air is never allowed to enter the control panel.
This cooling system has several advantages over conventional methods. Heat exchangers and heat pipes have serious limitations when it comes to summertime heat. In many cases, the temperature of the hot plant on a summer day is close to that inside the enclosure. There is not enough difference in temperature for a decent exchange. These also rely on electricity to run.
Refrigerant panel airconditioners are expensive, take almost a day to install, and are prone to failure when dust and dirt clogs the filter. Vibration from machinery contributes to component failures and loss of Freon. Life expectancy for most compressors is rated at 2,5 years of continuous operation. Often a floor drain is not readily available for the condensation tube. These units also require electricity to run.
According to Exair, heat exchangers, heat pipes and refrigerant coolers all have filters that can clog. Left unattended, mechanical failure of the cooler is likely, resulting in overheating inside the enclosure and possible equipment failure. Vortex coolers have no moving parts to wear out and do not require constant monitoring. All models are UL listed and available in a large number of styles and capacities.
Thermostat control limits compressed air use by operating the cooler only when the enclosure reaches predetermined levels. Most plants have their compressor running continuously; by using a vortex cooler, energy savings are achieved through utilising a machine that is already consuming electricity, instead of using products which would require additional power.
Typical applications are found in the food and pharmaceutical industries with capacities ranging from 160 to 700 kilo calories per hour.
Conduction-cooled electronics cases 23 October 2019, Actum Electronics
, Enclosures, Racks, Cabinets & Panel Products
As electronics and processing systems become smaller and smaller, the need for versatile, compact form-factor cases that allow efficient heat dissipation increases. nVent Schroff offers customisable conduction-cooled ...
Read more...19-inch lab racks 23 October 2019, Actum Electronics
, Enclosures, Racks, Cabinets & Panel Products
nVent Schroff’s 19-inch lab racks are designed for laboratory environments, and come in mobile and stationary models. They offer a load-carrying capacity of 200 kg at the centre and a chassis depth of ...
Read more...18-slot PXI Express chassis 25 September 2019, Actum Electronics
, Enclosures, Racks, Cabinets & Panel Products
Schroff nVent has expanded its Schroff product range for PXI systems by adding an 18-slot Schroff PXI Express system with a modular structure which is used in complex measuring and simulation applications.
The ...
Read more...Table-top instrument enclosures 25 September 2019, Avnet South Africa
, Enclosures, Racks, Cabinets & Panel Products
The Evotec range of table-top plastic enclosures, made by OKW, is suitable for for tough working environments in applications such as measurement and control engineering, IT, medical, laboratory and environmental ...
Read more...Plastic enclosures with mounting flange 25 September 2019, Sivan Electronic Supplies
, Enclosures, Racks, Cabinets & Panel Products
Available from Gainta is a range of plastic enclosures for mounting and assembly of general electronic applications. The bases of the cases have a mounting flange and incorporate a tongue and groove sealing ...
Read more...USB and utility plastic boxes 25 September 2019, Sivan Electronic Supplies
, Enclosures, Racks, Cabinets & Panel Products
Gainta’s G19XX series of utility boxes and USB boxes come in a range of materials and a variety of designs to meet an array of application requirements.
The G1901G/G1901C and G1911G/G1911C are ideally ...
Read more...Die-cast enclosures in extended lengths 25 September 2019, Electrocomp
, Enclosures, Racks, Cabinets & Panel Products
The 1590 die-cast enclosures family from Hammond Manufacturing consists of 41 different sizes in the standard rectangular and Stomp Box, painted variants.
Stomp boxes, colour coded to provide quick ...
Read more...Digital workflow eases selection of Schroff products 28 August 2019, Actum Electronics
, Enclosures, Racks, Cabinets & Panel Products
nVent Schroff has a series of coordinated services that simplify and speed up the digital workflow from selection to delivery of Schroff products. Now when users search for products on https://schroff.nvent.com/...
Read more...Sealed enclosures for industrial electronics 26 June 2019, Electrocomp
, Enclosures, Racks, Cabinets & Panel Products
Hammond Manufacturing has added 36 new configurations to its 1554 and 1555 sealed enclosure families for Industry 4.0. Available in ABS or polycarbonate with styled, opaque, clear or smoked lids, the ...
Read more...ebm-papst expands AxiBlade fan range 26 June 2019, Ebmpapst South Africa
, Enclosures, Racks, Cabinets & Panel Products
Axial fans, which are used in air-conditioning and refrigeration systems such as evaporators, condensers and heat pumps, must fulfil high requirements with regard to air flow, energy efficiency and noise. ...
printer friendly version