Selecting the Proper Equipment for Food and Beverage Applications


Proper thermal management is key for saving resources and keeping electronics (and equipment) up and running on a consistent basis. It is important to understand the various types of cooling methods available and how the ambient conditions may effect the product chosen.  Choosing the wrong method may lead to a solution that is undersized or oversized, or fails prematurely due to being specified for incompatible ambient conditions.


Selection of the preferred thermal management method, based on various environmental conditions:

Click here to view our thermal management selection guide.


With products that include fans, heaters, packaged air conditioners, air-to-water heat exchangers, packaged process chillers, and signaling devices, Pfannenberg offers a full range of thermal management solutions for the food and beverage industry. Standard options such as stainless steel materials, NEMA 4/4X enclosures, and washdown duty construction allow these time-tested products to be seamlessly incorporated into even the most demanding food and beverage processing applications.


Have a question regarding which equipment is best for your application? Ask Us Here.

Be sure to follow our NEW Food and Beverage LinkedIn Showcase Page!

Topics: Air Water Heat ExchangersFilterfansCooling UnitsThermal ManagementHeatersFood & BeverageChillersAir Air Heat Exchangers

Control Enclosure Temperatures in a Food & Beverage Manufacturing Plant


Controlling enclosure temperature is crucial in the food and beverage industry.  If the temperature is too warm or too cold, condensation and higher risks of contamination arises. 

Pfannenberg’s Heaters, Thermostats & Hygrostats detect and keep ambient conditions above dew point to avoid the harmful effects of condensation on your electronics and products. They can be used as standalone or in partnership with our other Thermal Management solutions specifically our Filterfan® and Cooling Unit product lines.

  • Thermostats are used for alarming, fan control and heater control
  • Hygrostats can control humidity levels within enclosure when used with small heaters
  • Heaters are available for cabinets in cold storage areas as well as for condensate management

For over 60 years, Pfannenberg has been helping to cool and maintain temperatures for your electronics.


 

Topics: Thermal ManagementNorth AmericaHygrostatsThermostatsHeatersFood & Beverage

Cooling Food & Beverage Applications with Pfannenberg’s DTS/DTT Series

Innovative, Efficient, Reliable

Whether in washdown locations or control rooms, the DTS Series key internal electronics are positioned away from potentially moist and/or caustic air in food and beverage applications.  The wide condenser fin spacing allows for filterless and maintenance-free operation.  The stainless steel units have an epoxy coating on all exposed copper tubing to compliment the electrostatically-coated condensers. The fans are conformal coated, backward curve impellers that have a standard life of 55,000+ hours, providing the longest life and best air flow in their class.

DTS Series Cooling Units

  • Active condensate management utilizes a PTC heater which eliminates the need for drain line.
  • NEMA Type 4/4X 304 Stainless Steel with #3 polish to repel contaminants in food grade applications and to provide for easy washdown.
  • High Temperature models can operate in ambient temperature models can operate in ambient temperatures up to 140° F (60° C), ideal near industrial ovens or baking lines.
  • Optional cover to protect fan if used in washdown or in high dust/debris areas.

DTT Series Top Mount Cooling Units

  • DTT Series Units provide convenient top mount cooling while eliminating the danger of condensate entering cabinets.
  • Innovative service panel design provides easy to change filters, controls and fuses, decreasing service time and allowing filters to be changed without downtime.
  • Product variety: multiple performance levels available.
  • Easy mounting: quick release mounting frame and quick mount design.

By keeping electronics in enclosures from overheating, Pfannenberg provides an invaluable service to companies, keeping their machinery and processes consistently operating.  By developing and producing products which are designed to save energy and other resources, Pfannenberg operates by their business philosophy – Protecting man, machine and the environment


Topics: Enclosure CoolingCooling UnitsThermal ManagementNorth AmericaFood & Beverage

Pfannenberg Food & Beverage Applications: Air/Water Heat Exchangers

The Complete Liquid-Cooled Solution for F&B Industrial Control Enclosures

For over 50 years Pfannenberg has been a leader in thermal management solutions.  From simple Fan Cooling and Packaged Air Conditioners to more complex water cooled applications, our expertise helps ensure industrial electronics operate at peak efficiency and extended service life.

Pfannenberg’s Air/Water Heat Exchangers offer a solutions to fix your thermal management problems in washdown areas of the plant or areas with high amounts of particulate . The sealed cabinet provides contaminant-free component cooling without adding heat to the local environment.  It provides an excellent economic solution where plant water is available or when used in conjunction with a process chiller.  It’s sealed design and available stainless steel, NEMA Type 4/4X construction provides a maintenance free solution with no exposed fans or maintenance of filters required.

Typical Food and Beverage Applications:

  • Ingredient Mixers
  • Product Cooling/Drying
  • Packaging Automation Equipment
  • Inspection Machines
  • Oven Controls

For applications which require local enclosure cooling using a remotely located source of refrigeration, PWS Series Air/Water Heat Exchangers provide the perfect solution.  Paired with our CC or  EB Series Chillers, the air/water heat exchanger provides a total cooling solution that manages process and/or control enclosure heat gain and effectively removes it from the processing area.  Single source responsibility for the complete system ensures properly matched components that are engineered to work together – and to provide a custom fit to the most complex food processing equipment.


Topics: Air Water Heat ExchangersEnclosure CoolingCooling UnitsThermal ManagementNorth AmericaWater CoolingPackaged ChillersFood & Beverage

Filterfans® – Essential to Food and Beverage Applications


Pfannenberg’s Filterfans® –  “Trust in the Original”

Proper cooling is essential for temperature regulation for the electronics used in a food and beverage facility.

Pfannenberg’s Filterfans® incorporate modern louvers which enable maximal airflow, hold back dust/flour and water particles, protect the filter medium from damage and can be integrated into the design of the application. Filterfans are an ideal cooling solution when the ambient air is always lower than the temperature required in the electrical enclosure. This assists the natural convection of the air and avoids hot spots within the enclosure.

Pfannenberg is the inventor of the Filterfan®, with 50 years of experience and continuous development. 


Why Choose Pfannenberg’s Filterfans®

  • Reduced Energy Consumption – More air, less power consumption
  • NEMA Type Protection – Closed frame prevents unfiltered air from passing
  • Patented Tool-Less 4 Corner Fastening System – Possible to install in seconds
  • Aesthetically Pleasing Design Using Neutral Colors – Prefect harmony of colors with modern machines and plants
  • Highest System Airflow in Industry – Via optimized louvres
  • 300% Longer Service Time via Patented Fluted Filter Mat – This saves time and money

These time-tested products can be seamlessly incorporated into even the most demanding food and beverage processing or packaging applications.

Topics: FilterfansThermal ManagementNorth AmericaFood & Beverage

Liquid Cooling Solutions for Commercial Bakery Electrical Enclosures


Are the VFDs in your Commercial Bakery failing due to high amounts of flour and moisture entering your electrical enclosure?

Pfannenberg is your proven partner for complex thermal management problems in the baking industry. High security classes of equipment and corrosion-resistant construction materials resist even the most difficult ambient conditions.

Looking for another energy savings solution? Pfannenberg’s PWS Air/Water Heat Exchangers are ideal for cooling your electrical components. Designed for maintenance free operation in the most demanding areas of a plant.

Click here to download the NEW Pfannenberg Bakery Flyer!

Also, be sure to visit us at IBIE 2016 in Las Vegas, NV — October 8th-11th at Booth #9247!

Topics: Air Water Heat ExchangersEnclosure CoolingCooling UnitsThermal ManagementNorth AmericaWater CoolingFood & Beverage

The Advantages of Air To Water Heat Exchangers for Thermal Management in Harsh Environments


Money-saving approach yields longer service life while conserving energy.

Control Panel Cooling Technique Helps Mitigate Hydrogen Sulfide Corrosion Problems with Wastewater Pumping Systems

Air To Water Heat Exchangers provide an energy efficient and reduced manintenance method for cooling electrical control panels.

Enclosure Cooling Units offer a straightforward active-cooling technique for pump control panels, however, they are not necessarily the best choice for all installation locations. Dirt, dust, and other airborne contaminants can clog condenser coils; while corrosive gasses in the environment can lead to premature failures.On the other hand, Air To Water Heat Exchangers can satisfy the same requirements without circulating ambient air within the housing, thereby eliminating the clogging and corrosion problems associated with airborne contamination.

A common threat to organic wastewater handling and treatment systems is the presence of hydrogen sulfide gas. Not only is this gas toxic to humans, but it also contributes heavily to corrosion problems in pipes, structures, instrumentation, and electrical systems. Lift stations and pumping systems are particularly vulnerable as H2S sour gas readily attacks copper used in wires, electrical contacts, and cooling units used on motor control centers (MCC’s).

Electronics cooling is vital for MCC’s containing the variable frequency drives (VFD’s) that are used to maintain efficient operation by conserving energy through regulating the speed at which pumps operate. Since VFD’s generate a considerable amount of heat, it is necessary to employ an active enclosure cooling technique in order to keep VFD’s operating within acceptable temperature limits. The absence of effective cooling will quickly allow VFD’s to overheat, shut down, or even catastrophically fail. In addition to being an economic loss, such outages disrupt production and affect the efficiency of plant operations.

Effective electrical enclosure cooling for environments where H2S gas is present must utilize a closed loop technique to ensure that sour gas is not introduced into the enclosure where it could harm wiring, electrical connections, switches, and other components. In fact, for many installations it is advantageous to deploy an air or nitrogen purge system which creates a positive pressure within the enclosure in order to keep undesirable ambient elements, including sour gas, outside of it. As opposed to an open loop system that uses fans to draw ambient air into and push heat out of the enclosure, a closed loop system maintains isolation of the ambient air and permits the NEMA rating of the electrical enclosure to be maintained. Examples of closed loop cooling equipment for electrical enclosures include cooling units (also known as enclosure air conditioners or enclosure AC) and Air To Water Heat Exchangers.

Cooling units offer the advantage of a being a plug and play solution – they simply hang onto the outside of the enclosure and are connected to power already available inside the enclosure. However, these compressor-based refrigeration systems consume a fair amount of energy and require periodic maintenance. Additionally, to endure the sour gas environment, exposed copper pipes and condenser coils must be treated with a conformal coating – which is not necessarily standard. Over time, the need to clean condenser coils – which may require partial disassembly of the cabinet – can lead to scratched paint, compromised coatings, and eventual corrosion.

Air-to-water Heat Exchangers offer several advantages making them the preferred method for closed-loop, electrical enclosure cooling. Acquisition and operating expenses are significantly lower than those of a compressor-based cooling unit.

Additionally, this product is virtually maintenance free and since there is no ambient air circulation within the unit, there is no risk of H2S sour gas corrosion to internal components.

There are, however, two challenges with acquiring and implementing these units:

  • The units must be specified as the solution of choice with the MCC or pump system integrator.
  • The units must be connected to a viable source of clean water or coolant to circulate through the heat exchanger coil.

Another viable implementation is to consider retrofitting cooling units with air-to-water heat exchangers. This modification can be readily accomplished without difficulty since some units share the same enclosure cut-out. For dissimilar cutouts, an adaptor plate may be required to reduce the size of the opening.

Click here to download the Case study in PDF

Need more information on Pfannenberg’s PWS Air to Water Heat Exchangers? Click here and discover all the advantages of this product!


Topics: Air Water Heat ExchangersEnclosure CoolingThermal ManagementWater CoolingWater TreatmentWastewater Treatment

The Technology of Cooling: Cooling with Closed Loop Cooling Units


Pfannenberg Cooling Units operate on the principle of the Carnot cycle. This means that the cooling unit functions as a heat pump that “pumps” the thermal energy transferred from the electronic cabinet (heat dissipated from the components) up to a higher level of temperature (the ambient temperature can reach levels as high as + 55 °C). The air inside the enclosure is cooled down by the evaporator and at the same time dehumidified.

How do I know if a cooling unit is the right product for my application?

> If the ambient temperature is greater than the target internal temperature of the enclosure, active cooling is required.
> If a NEMA Type 12 to 4x rating is required – closed loop systems can maintain the NEMA Type rating of the cabinet.

Properly sizing a cooling unit:

To properly size a cooling unit you must know the required cooling capacity in Watts, mounting requirements (side, integrated or top mount) and the dimensions of the unit and enclosure.

{PC = PD – PR }
> Pc [ Watt ]: Refrigeration capacity of a cooling unit.
> PD [ Watt ]: Dissipation Loss: Thermal power generated inside a cabinet by the dissipation loss of components.
> PR [ Watt ]: Radiant heat gain/loss: Heat transfer through the skin of the enclosure (insulation factor not included).

{PR = C x A x ∆T }
> C [  W/m2 °C ]: Coefficient of heat transmission.
> A [  M2 ]: Surface area of electronics cabinet.
> ∆T [ °C ]: Difference in temperature between the ambient air and the air inside the electronics cabinet.

Utilizing performance curves to properly size cooling units:

Pfannenberg utilizes the DIN standard 35/35 °C when rating our cooling units. Many other companies use 50/50 °C, which provides a higher, non-usable value.

Customers should use their own application temperatures to determine the proper cooling capacity of the system.

To properly size your Cooling Units you can also use Pfannenberg’s PSS Software which will guide you through the sizing process, to calculate the correct product for your application.


Important information when utilizing cooling units:

  • The refrigeration capacity should exceed the dissipation loss from the installed components by approximately 10%.
  • The enclosure should be sealed to prevent the inflow of ambient air.
  • Use the door contact switch to impede operation with open doors and consequent excessive accumulation of condensation.
  • Use cooling units with maximum clearance between air inflow and air outflow to prevent poor circulation.
  • Make sure that the air inflow and air outflow in the external circuit is not hindered, preventing proper heat exchanging at the condenser.
  • When using top-mounted cooling units, make sure that components with their own fans do not expel the air directly into the cooling unit‘s cool air outflow.
  • Make sure unit is level.
  • Setting the temperature to the lowest setting is not the optimal solution due to the condensation issues. The value we have preset on the cooling unit is a sound compromise between cooling the inside of the enclosure and the accumulation of condensation.

Click here to discover our complete range of Cooling Units!

Topics: Enclosure CoolingCooling UnitsThermal Management

New Thermal Management Solutions with Cloud-Based Remote Monitoring


On the way to Industry 4.0 with Pfannenberg’s innovative Thermal Management Solutions

Pfannenberg will unveil its Thermal Management Solution with cloud-based remote monitoring at Europe’s leading exhibition for electric automation, SPS IPC Drives in Nuremberg, Germany.

Communication is provided by a compact device with an integrated SIM card, which receives the relevant data from the connected cooling units via Modbus – a Building Management Protocol – and transmits it to the cloud over a secure mobile telecommunication link without any need for access to the company’s IT infrastructure.

The solution developed in cooperation with T-Systems enables users or systems to retrieve status data, diagnostic information and alarm notifications from the cooling units, live and independent of location, through a web browser, or to integrate the data directly into their applications.

From November 24-26th,  visitors will have the opportunity to see a working model on display at Stand #339 in Hall 5, and discuss this innovative Thermal Management solution with experts from Pfannenberg to learn more about its functionality and deployment options.

“The smart factory is the wave of the future. As an innovative medium-size company with over 190 patents worldwide, making our cooling solutions fit for networked products is a natural choice”, says Andreas Pfannenberg, Managing Director of the Pfannenberg Group. “With the premium controllers of the newest generation, our cooling units are able to provide a wealth of relevant data. Thanks to the cloud solution, employees in production management, the service department or the maintenance department, as well as higher-level monitoring systems, receive information about possible malfunctions or imminent failures promptly, wherever they are. This enables them to respond quickly before a serious incident occurs, which helps increase machine availability.”

Next-generation of Thermal Management

The Thermal Management demo system on display at the trade show will consist of a two-compartment switchgear cabinet with a semi-recessed DTI cooling unit on one side and a semi-recessed PWI series Air to Water Heat Exchanger on the other side, each equipped with a premium controller. There are three heaters in each cabinet compartments, which can be turned on individually at the front using door-mounted switches to simulate heat loads. On an external monitor visitors will be able to observe how the Enclosure Cooling Unit reacts to changes in the heat load or when opening the cabinet door.


Contact us today to learn more about this innovative solution!

Topics: Air Water Heat ExchangersEnclosure CoolingCooling UnitsThermal Management

Top-Mounted Cooling Units for Electrical Enclosure Cooling


Pfannenberg’s Top-Mount Cooling Units meet all industry demands for costs, space and energy savings.

Proper cooling is essential for temperature regulation in electrical enclosures. Our Top Mount Cooling Units provide 100% protection against condensate with their unique, patented condensate management.


Why choose Pfannenberg’s Top Mount Units :

Compact size
Ideal for narrow production lines, electrical enclosures that are placed tightly together in a row and areas that are required to be kept obstruction free. Their top positioning keeps them protected from mechanical damage.

Energy Efficiency
New Proven, Energy Efficient Micro-Channel Technology (an environmentally friendly solution that using 50% less refrigerant than standard coils). The additional Energy Savings Mode allows the unit to automatically switch off the internal motor.

100% condensate protection
Main features of the DTT’s innovative condensate management include re-positioning of the cooling circuits. Moving the cold area up prevents the cold bridge to the electrical enclosure and also enables a problem-free drainage of condensate. An extensive separation of air flow and evaporator stops the formation of twirling droplets. Lastly the integrated air outlet nozzle makes the use of conventional air hoses unnecessary, minimizing the condensation risk.

Unique Design
The compact, top-mount design allows you to save valuable space to use for other purposes. Its low energy consumption reduces your energy costs. Our DTT Top Mount Units have a unique, revolutionary patented condensate management design. The innovative position of the cooling circuits challenges the traditional design of top mounted units, preventing condensate from penetrating the electrical enclosure.

Flexible
The DTT series are available in three installation sizes and six performance classes – from 500 W to 4,000 W, providing the optimum enclosure cooling from every manufacturer.
Additionally the product range of filter media covers virtually every area, for example aluminum filters for air containing oil or aerosols or fluted filters for highly dusty environments. Pfannenberg’s DTT top mounted cooling units comply with the protection class up to IP54 level of protection for control cabinets.

Service and maintenance friendliness
> Easy, tool-free installation thanks to quick fastening clips on the bottom of the unit.
> A removable cover that can be taken off the front allowing for quick access to the components.
> A Tool-free filter change requiring no screws that can be carried out in seconds.
> Uses the same filter media found in our DTI/DTS series door-mounted and side-mounted cooling units.


Click here if you need more information about our Top-Mounted Cooling Units!

Topics: Enclosure CoolingCooling UnitsThermal Management