4 Types of Heat Transfer Mechanisms Used for Cooling Electrical Enclosures

Cooling an electrical enclosure involves processes for transferring heat from inside the enclosure and discharging it to the surrounding air. Various heat transfer mechanisms exist, including convection, conduction, thermal radiation, and evaporative cooling. 

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6 Enclosure Cooling Considerations for Large Electrical Machines

A large machine includes any machinery that is physically large, complex, and operates as a standalone machine or integrated into a production line. Examples include cement kilns, paper making machines, heavy presses, and manufacturing machinery.

To ensure reliable operation, electrical control equipment must be protected so that the operating environment complies with manufacturers' specifications for temperature and humidity. It's also essential that equipment is kept clean and free of contamination. There are several  cooling options can be used to meet both of these requirements.

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How to Avoid Expensive Design Changes with Enclosure Air Conditioner Packages

From time to time, electrical enclosure designers find themselves in a bind because of constraints that limit their options when designing or upgrading enclosures. Typical issues include space limitations, excessive heat load, poor ventilation, dust and dirt, and high ambient temperatures. Solutions that entail the relocation of the electrical enclosure, moving adjacent equipment to create space, or installing a larger enclosure frequently turn out to be expensive, impracticable, or involve significant disruption.

A possible solution is the installation of an enclosure air conditioner. Here are some scenarios where this might be the best alternative.

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Considerations when Selecting a Weatherproof Electrical Enclosure & Cooling System

The selection of a weatherproof electrical enclosure needs to be made with care because the definition of weatherproof under article 100 of the National Electrical Code requires that exposure to weather must not affect the operation of the enclosure. Such a definition requires further interpretation when considering enclosures and cooling systems to be installed in locations exposed to harsh weather. There are significant differences in weather conditions between coastal marine locations, wet tropical environments, deserts, and cold climates.

 

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Why You Need More than Just a Cabinet Cooling Fan for Electrical Drives

It is generally acknowledged that both AC and DC electrical drives operate at very high efficiencies (≥95% for AC and ≥98% for DC). However, even these high efficiencies leave losses manifested as heat dissipation from these drives. Along with the many pros and cons for the two drives, the type of enclosure required is often a major factor in making a final choice. For both AC and DC drives, the heat generated makes it important to carefully consider the sizing of enclosures utilized, as well as how those enclosures are ventilated and/or cooled.

 

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5 Precautions to Take when Enclosure Cooling System Is Subject to Vibration

Electrical enclosure air conditioners installed in locations subject to vibration may fail unless special precautions are taken to prevent failure. These locations may include steel structures supporting heavy equipment, marine environments, and off-road equipment. Fortunately, it's possible to mitigate the effects of vibration on enclosure air conditioners. Here are five steps that we, at Thermal Edge, take to proof our enclosure air conditioners subject to vibration.

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4 Reasons You Need Better Condensation Management for Electrical Enclosures

Condensation forms naturally when the internal temperature inside an electrical enclosure reaches the dew point and which, if not dealt with, may cause many problems. These issues include the possibility of corrosion, equipment damage, and the risk of electric shock. Also, in electrical enclosures fitted with enclosure air conditioners, water collects on the evaporator coils and has to be removed.

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6 Tips for Selecting a Sealed Electrical Enclosure & Cooling Package

Although many electrical enclosures are naturally ventilated, there are a number of sound technical reasons for using sealed electrical enclosures. These include keeping components clean, dry, and preventing ingress of corrosive materials and dust. However, modern electrical and electronic equipment generates a significant amount of heat that must be removed from the enclosure, and sealed electrical enclosures cannot rely on traditional ventilation or fans for cooling. Thus, closed loop cooling is needed to ensure internal temperatures are maintained at safe levels.

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6 Evaluation Questions for Selecting an Enclosure Air Conditioner Supplier

When you are selecting an enclosure air conditioning supplier, you'll want to make sure the supplier is capable, competent, and that their equipment meets your requirements. So, before placing an order, spend a little time evaluating potential suppliers to make sure you select one that will deliver the quality you need.

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Design Engineers Checklist for Meeting All Thermal Management Requirements

This checklist is intended to help design engineers verify the important thermal management requirements for enclosure cooling systems. The checklist covers environmental conditions, cooling requirements, methods of cooling, and other pertinent design aspects.

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