The closed loop cooling cycle of an air to air heat exchanger makes it right for many applications where cooling solutions such as fans are unsuitable or when air conditioners are undesirable due to their larger size, higher noise levels and greater energy consumption.
Environmental and climate conditions can negatively affect electrical enclosures in several ways. Beside the negative effects of excessive heat, dust and dirt, and the formation of corrosion is an issue that can plague enclosures. Corrosion doesn’t form without a reason; excessive condensation is most often the primary contributor to the formation of corrosion within enclosures. […]
To the outsider, the food and beverage industry operates in a benign and clean environment. Although this assumption is largely true, it requires that facilities are rigorously cleaned and high standards of hygiene maintained. Cleaning processes include the use of chemical disinfectants and washdowns to prevent pathogens accumulating on any surface. Since the introduction of […]
Almost everyone involved in the maintenance of electrical enclosures has, at one time or another, faced problems with overheated electrical enclosures. In most instances, the obvious solution was to install or upgrade the cabinet cooling fan only to find that it didn’t work too well. Here are some reasons why the obvious solution may not […]
UL stands for Underwriters Laboratories in the United States, and the initials UL represent their mark of approval. UL has laboratories in several other countries, and in Canada their mark of approval is cUL. Underwriters Laboratories belongs to a group of nationally recognized testing laboratories; organizations that are accepted by authorities having jurisdiction (AHJs) in […]
Many of the requirements found in the National Electric Code (NFPA 70) specify that electrical equipment to be installed in non-hazardous industrial facilities, such as wastewater treatment plants, food processing plants, and data centers, must be listed or labeled by UL or another standards testing agency.
As electrical components become increasingly smaller and are more densely packed into electrical control panels, the amount of heat generated inside cabinets continues to increase. When considering heat dissipation in control panels it’s important to note what electrical equipment manufacturers specify as a maximum allowable operating temperature for their components. Maintaining a maximum internal control […]
Electric and electronic components used to operate equipment in the food and beverage industry, such as PLCs, motor starters, and VFDs are sensitive to moisture, contaminants, and excessive heat. In order to maintain efficiency and keep the plant running, these components must be kept at or below the manufacturer’s recommended safe operating temperature. At […]
Although cabinet cooling systems are robust and reliable, their efficacy depends upon their correct design, selection and installation. It is essential that cooling solutions are properly sized to the heat load and environmental considerations are taken into account. Unfortunately, this is not always the case, especially when equipment is replaced or upgraded by personnel […]
Selecting a new enclosure cooling solution or upgrading to another product can be challenging. This is especially true when looking for both a new enclosure cooling system and a reliable manufacturer of high quality products who provides excellent customer service and technical support.
There’s no getting around it. Critical electrical equipment housed in industrial control panels requires operating temperatures low enough to maintain efficiency and reliability. Without a properly sized cooling system, components such as VFDs, motor starters and PLCs are susceptible to reduced capacity, malfunctions or even premature failure, which can result in expensive downtime as […]
Enclosure cooling fans are one type of cooling device used to help keep heat producing electrical components from overheating. Fans are unique in that they are considered to be an open loop cooling system whereas air to air heat exchangers and enclosure air conditioners are closed loop systems.
Air conditioners are typically required when the enclosure’s heat load is over 300 Watts and in extreme ambient temperature conditions. Enclosure air conditioners are capable of working with high solar heat gains, in poorly ventilated areas and even in highly polluted areas. However, there may be constraints that prevent the use of a conventional […]
Outdoor electrical enclosures are exposed to an unusual combination of unpredictable environmental conditions that can cause electrical equipment to malfunction or even fail. Constant exposure to uncontrolled environments can wreak havoc on outdoor applications unless the proper cooling and protection requirements are met.
Mistakes can be costly when it comes to enclosures housing industrial control equipment. Not only are the individual components, including variable frequency drives (VFDs) transformers, and power supplies, expensive to repair or replace, but they control the equipment upon which the entire operation of the facility depends.
Wastewater treatment facilities present unique hazards to electrical enclosures. Extremely harsh conditions commonly present during wastewater treatment include highly corrosive liquids, gases and vapors such as chlorine, hydrogen peroxide, and ammonia. Some enclosures may also encounter salt spray and possibly even flammable gases generated by the decomposition of waste.
When choosing the proper enclosure cooling solution, there are many tools to use and options to choose from. Without the right information, it will be very difficult to design and implement a satisfactory solution.
Whether you have an existing electrical enclosure or are about to install a new one, it’s essential to identify the right enclosure cooling solution to ensure that the enclosure doesn’t overheat. The answer may be as simple as adding a few ventilation fans or it might be necessary to install an enclosure air conditioner. […]
Under ideal environmental conditions, enclosure cooling fans offer the most cost effective solution to adequately cool sensitive electrical components. Cooling fans function best when located indoors where minimal levels of dust and dirt exist, away from moisture and corrosive chemicals. The ambient air temperature should be low enough to properly cool heat producing components.
Designing an enclosure cooling system for a water treatment plant is different than for most other industrial settings. The environment in and around the plant is far more likely to have high humidity, and to be exposed to the corrosive liquids and vapors from the harsh chemical reagents required to sterilize the infrastructure from […]
Mechanical and electrical equipment used in water and wastewater treatment systems include a range of pumps, blowers, motors, meters, and sensors for critical operations. Electrical controls for this equipment must be protected from hazards such as corrosive vapors, cleaning fluids, chemical reagents, and contaminated water, as well as environmental dust and dirt, particulates from […]
Excess heat can cause electrical components, such as PLCs, VFDs, and power supplies, to lose efficiency and reliability, and may even cause them to fail early. In an industrial setting, these components are housed in protective enclosures, which trap waste heat and raise the temperature of the enclosure air above their maximum allowable temperature.
Water treatment plants represent an unusual combination of predictable and somewhat unpredictable conditions that result in a hostile environment for electrical equipment. Although there are similarities between potable and wastewater treatment, the added hazards of human and industrial waste mean that environmental conditions at wastewater treatment plants are more difficult.
The reasons why enclosure designers choose sealed electrical enclosures in preference to ventilated enclosures are numerous. They may include a desire to keep equipment clean and free from contamination or because the environment surrounding the enclosure is not suitable for ventilated enclosures. Once the decision to use a sealed enclosure is made, it naturally […]
Modern industry practice focuses on designing electrical components that are faster, smaller and more cost effective. A common result of product miniaturization is an increase in heat density. Combined with the use of smaller space saving electrical enclosures, temperature sensitive equipment is more stressed than ever.