Top 5 Misconceptions About an Enclosure Air Conditioner

In this cash-strapped economy where money and energy usage are first priority, the poorly understood enclosure air conditioner is surrounded by many misconceptions that have gone to the extent of curtailing its use even in applications that require its installation. Here is an effort to dispel the most common ones.

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Why a Cabinet Cooling Fan Won't Hold Up in Harsh Environments

Using a cabinet cooling fan is the simplest and most economical way to dissipate heat from your enclosure if the temperature inside the enclosure can be greater than the ambient temperature. It is easy and cheap to add a filter to protect your system from minor dirt and impurities. However, there are stipulations for use of a filtered fan. Your application must require low to moderate heat dissipation and be located in a cool, clean air environment where humidity is not a concern. Harsher environments with high ambient temperature, airborne particles, humidity and dispersed oil in the air are conditions that filtered fans cannot handle.

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What Operating Voltage is needed for an Enclosure Air Conditioner?

Enclosure air conditioners are necessary to remove the heat produced by your electrical equipment and to keep it running at an optimum temperature range for maximum efficiency and performance. Your decision on a specific model should factor in its operating voltage so that it is compatible with the supply voltage at your facility. Enclosure air conditioners are available for use with all common supply voltages and frequencies.

There are some inherent properties of supply voltages that you need to understand to make a more informed decision about the enclosure air conditioner model that would fit your requirements.

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How a Closed Loop Cooling System Can Cut Costs

An enclosure cooling system is necessary to remove the heat dissipated by the electrical equipment and to keep the temperature of the enclosure regulated. While filtered fans can remove some of the heat through forced convection, in most other cases, a closed loop cooling system is essential for optimal regulation of temperature without exposing the electrical equipment to ambient air. Typically, air-to-air heat exchangers and closed loop air conditioners take advantage of this principle to cool the enclosure.

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Low Voltage AC Drives Even More Efficient with Enclosure Cooling Systems

Variable Frequency Drives, also known as AC drives, are ubiquitous in applications utilizing electrical equipment. Their purpose in an electromechanical system is to control the speed and torque of an AC motor by changing the frequency and voltage of the input signal. They are used in applications that range from small compressors to large mill drives and industrial equipment.

While AC drives are commonly utilized for their energy saving potential, the exact amount of energy savings is based on the application. For example, in a centrifugal fan application, an AC drive can reduce energy costs ranging from 10 to 60 percent if the fan or pump is designed to operate between 40 to 80 percent of full speed, according to Siemens.

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7 Most Common Enclosure Cooling Questions Asked by Thermal Edge Customers

From OEMs to facility managers and lead engineers, our customers ask us questions us common questions about enclosure cooling. Here are seven of those common questions.

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What to Expect With Enclosure Air Conditioner Energy Usage

The right air conditioner for your enclosure can have a tremendous impact on the performance and efficiency of your electrical equipment. Choosing the proper cooling capacity for your air conditioner can also save energy and utility costs for your business. There are several factors that can dictate the energy consumed by your enclosure air conditioner.

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When Is a Compact Enclosure Air Conditioner Necessary?

Not all applications requiring the use of enclosure air conditioners are the same. There are several factors like the heat load from the electrical equipment, size of the enclosure, location of the enclosure, accessibility to the air conditioner and ventilation outside the enclosure that make your installation unique. For instance, your application may require retrofitting an air conditioner in an already installed small 8” enclosure. A standard air conditioner will not be a possible option for such a small enclosure. Compact enclosure air conditioners are designed with these constraints in mind; their design and construction make them an excellent fit for tight spaces.  

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5 Temperature Control Solutions for an Electrical Enclosure

Temperature control is a crucial element in the design of enclosures for electrical equipment. Since manufacturers design electrical equipment to work within a specific temperature range, the heat they dissipate during normal operation has to be removed to avoid damaging equipment. High temperature directly affects the reliability and life of electrical equipment. Manufacturers claim that a 10 °C increase of temperature above the maximum allowable temperature cuts device lifespan in half. The consequences are increased downtime, frequent maintenance cycles and a high expenditure. These are some commonly used temperature control solutions employed in the industry:

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How Temperature Control in Electrical Enclosures Affects Component Life

The debate about enclosure cooling is sometimes biased by traditional views that electro-mechanical equipment can withstand relatively high temperatures. This perception doesn't consider the effect high temperature has on the service life of modern electrical and electronic equipment. The reality is that most industrial electrical equipment is not designed for the peak temperatures frequently reached inside enclosures during hot weather or in hot industrial environments. This often leads to premature failure.

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