How to Choose the Proper Enclosure Cooling Product


Reliable Thermal Management:

Understanding the proper thermal management of your electrical enclosures is critical in keeping your production process up and running. Trouble-free production is only guaranteed if the sensitive climate inside your electrical enclosures is maintained, even the slightest overheating of the electronic component units can result in serious consequences such as production downtime and premature aging of parts. It’s important that you choose the proper enclosure cooling

Choosing the Best Solution for Enclosures and Electronics Cooling:

Before choosing the best cooling solution you need to know your environment. Is the control cabinet placement in an environment where the air is full of dust or oil? Is the equipment to be cooled exposed to the weather, i.e. moisture and sunshine? How large are the designated dimensions of the required cooling units? Once these questions have been clarified completely, you can move on to choosing the best cooling solution for your application.

Common Thermal Management Products:


FilterFans®

  • If the ambient temperature is always lower than the temperature required in the electrical enclosure, then  Filterfans® represent an economical solution for thermal management of electrical enclosures.


Enclosure Air Conditioner

  • If cooling cannot be accomplished by the outside air
  • If the temperature required inside the electrical cabinet should be equal to or lower than the ambient temperature
  • If the ambient air is strongly contaminated with oil or conductive dusts
  • When higher ingress protection is required (Type rating)


Air to Water Heat Exchanger

  • If a chilled water supply is available
  • If aggressive ambient air restricts the use of conventional cooling units
  • If a very high IP class is required (up to IP 65)
  • If a maintenance-free cooling unit  is required
  • If energy efficiency is considered at a plant level concern

Need Help choosing the correct cooling solution?

If you need help choosing the proper cooling product for your application check out our Pfannenberg Sizing Software, it’s a free tool for you to use.

Topics: Air Water Heat ExchangersFilterfansEnclosure CoolingCooling Units

Pfannenberg New PWS 3000 Series Air to Water Heat Exchangers


Save energy & safely cool your enclosures even under harsh conditions.

Lancaster, NY, May 13, 2013- Pfannenberg, Inc. introduces a new line of air to water heat exchangers designed to meet the unique requirements of industrial enclosure cooling applications. Our new PWS 3000 Series Air to Water Heat Exchangers offer a complete solution for recirculating water cooling systems for control enclosures especially under harsh conditions. With cooling capacities ranging from 2,218 BTU (650 W) to 34,121 BTU (10,000 W) these units are specifically engineered to allow safe, efficient use of liquid coolant to cool enclosure electronics. Additionally our sloped horizontal cover surfaces and optional NEMA Type 4X stainless steel type rating make the PWS 3000 series perfect for wash-down applications.

About Pfannenberg, Inc.

Pfannenberg, Inc. is a global manufacturer of thermal management, water cooling solutions and signaling technologies. Pfannenberg’s enclosure thermal management products help some of the largest companies worldwide stay cool and safe, protecting and keeping electronic equipment running to avoid costly downtime. In addition to our thermal management products Pfannenberg also manufactures visual and audible signaling devices for security, fire, building, industrial process, disaster warning, hazardous areas, light art and illumination. Pfannenberg is proud to provide solutions as a single source to its customers. Our business philosophy – Safety for man, machine and the environment

You can find more information about Pfannenberg, Inc. at: http://www.pfannenbergusa.com/heat_exchangers

Topics: Air Water Heat ExchangersEnclosure CoolingCooling UnitsWater Cooling

Pfannenberg Illuminates the Tallest Christmas Tree in Paris


Flashing lights make the “Place de la Concorde” shine

Hamburg, December 2012 – The tallest Christmas tree in Paris, which stands at 35 metres high, has been shining at the Place de la Concorde since the 6th December.

Equipped and illuminated with Pfannenberg 52 Quadro F12 flashing lights and inaugurated in an official opening ceremony by Paris’ mayor, Betrand Delanoë, the extraordinary light spectacle can be admired by inhabitants and visitors for a whole month longer.

Once again, Pfannenberg has proven that it is a competent partner in terms of art illuminations. As early as 2003, 20,000 Pfannenberg flashlights put the Paris landmark, the Eiffel Tower spectacularly in the limelight. Pfannenberg as a Hamburg company it was an absolute must to illuminate the Hamburg City Hall in 2004. And in 2008 9,500 flashing lights illuminated the Trinity Bridge, the television tower and the summer night sky in St. Petersburg.The French company SAF MAGNUM was commissioned by the City of Paris and is thus responsible for the Parisian Christmas Tree illuminations. The company is, amongst other things, a specialist for the illumination of events. Whilst searching for a manufacturer of flashing light circuit boards, SAF MAGNUM encountered the Quadro flashing light used in the Parisian Eiffel Tower which was produced by Pfannenberg. SAF MAGNUM then used this to build a prototype for the Paris Christmas tree.

For the flashing lights on the Christmas tree the circuit boards of the flashing light Quadro F12 were built into a plastic ball with a diameter of 50 cm. The ball is then, in addition, illuminated permanently from the inside by 12 red high-performance LEDs. The red permanent glow of the balls is made to sparkle by the Pfannenberg flash circuit board by means of a white flash once every second. This light generates 13 joules flash energy, 140 candela light intensity and an internal random generator creates a unique champagne pearl effect.

Click here to see raw video of the tree lighting.

Enclosure cooling. But how and where?


Pfannenberg Paper Featured in May Design World:

When it comes to keeping electronics cool, you have several choices. For enclosure cooling, industrial air conditioners cool internal electrical components. The conditioners mount directly to the enclosure and are selected based on the amount of heat gain, interior air temperature requirements and, since the heat from the interior is rejected by the condenser of the air conditioner into the area adjacent to the enclosure, are also selected based on the ambient air conditions in the immediate vicinity.

Many industrial applications involve harsh environments including air laden with dust, grit, and/or oil mist, packaged air conditioners are not always easily applied and a remote cooling solution is required. Remote cooling moves the enclosure heat to a location away from its installation site – allowing the control enclosure to be sealed against the operation environment.

Remote cooling may involve using the air conditioner with a remote condenser or “split” refrigeration system. Here, the refrigerant compressor and evaporator remain packaged in the locally installed air conditioner. But the condenser is located in a more environmentally favorable location. Because the refrigerant gas from the compressor must be sent to the remote condenser, and the condensed refrigerant liquid must be returned to the conditioner’s evaporator, the piping between the local and remote components becomes an important part of the split system. If piping size and geometry are not properly engineered, the cooling system will be under capacity and the potential for problems with lubrication can cause premature compressor failure. Split systems also require charging the cooling circuit with refrigerant in the field and one remote condenser for each local condition is needed.

Another option for remote cooling involves equipping the control enclosure with an air to water heat exchanger that uses chilled water and a fan to condition and re-circulate the air within the cabinet. In this case, the entire refrigeration system is installed in a remote location and chilled water or a water-glycol combination is circulated to the enclosure-mounted device to remove the heat. Circulating a single-phase fluid makes the connecting piping a less critical element of the system.

An air to water heat exchanger can be beneficial for industrial applications. Because the heat exchangers use chilled water instead of vapor comp-ression refrigeration, it provides a sufficient cooling in a small package. In some cases, a single air-to-water heat exchanger can take the place of two or more air conditioners.

Air-to-water remote cooling can also offer increased energy efficiency when compared to using local air conditioners in environments where high ambient temperatures result in high refrigerant condenser pressures. As the refrigerant condensing pressure increases, the energy input for the compressor increases resulting higher operating costs. Contaminate-laden ambient air contributes to this situation by fouling the condenser coil and reducing its heat transfer efficiency. These problems are avoided by using a system where the refrigeration source is remote. If the chiller is located outdoors, there are additional efficiency gains to be made when seasonal changes in ambient air temperature allow lower refrigerant condensing pressures and lower operating costs.

The remote chiller-based system allows several enclosures to be cooled with a single chiller reducing equipment and installation costs. The chillers are selected to circulate the water flow rate required by the total number of air to water heat exchangers and programmed to maintain a fixed water temperature. Each enclosure-mounted heat exchanger controls the amount of coolant that it receives from the common coolant loop based on its own local temperature controller. The controller can be programmed to either maintain a fixed temperature or a variable temperature relative to the dew point temperature inside the enclosure to avoid condensation.

This coolant loop setup also provides an easy method of increasing reliability through redundancy. A second full-capacity chiller, installed in parallel with the primary chiller will provide up to 100% back-up for the cooling system. Simple controls are available to allow the back up chiller to be brought on line automatically in the event of a cooling failure. These controls can also rotate the lead and lag chillers to provide even duty cycles and ensure that the off line chiller is always ready.

Click here for more info on our Chiller range!

Topics: Air Water Heat ExchangersEnclosure CoolingThermal Management

Air Conditioning of Electronic Enclosures


Click the image to view an Article published in Process Cooling “Electronic Enclosure Cooling” Understanding Thermal Management

Topics: Enclosure CoolingCooling UnitsThermal Management