“We All Scream for Ice Cream” – Pfannenberg’s Thermal Management plays a key role in a favorite summer treat!


From the Farm to the Factory

When the trucks arrive at the factory, the milk and cream are pumped into storage silos and kept cool at 36°F until they are ready to begin the process.

Making the Ice Cream Mixture

The process begins by mixing ingredients and various flavors into a 1000-gallon stainless steel blender.  Heavy cream, liquid sugar cane, and condensed skim milk are the first foundational ingredients. After that, sometimes egg yolks and cocoa powder are incorporated depending on the desired flavoring. A natural stabilizer is mixed in to prevent various ice crystal formation or heat shock.  Blended for a total of about 6-8 minutes, it is then ready to be transferred and strained into a large tank.  This tank will store the mixture until it is ready to begin the pasteurization process.

Pasteurization & the Homogenizer

Pasteurization heats up the mix to kill harmful bacteria. The mixture flows through various plates. Hot water flows on one side of the plate and cold water (cold mix) flows on the other side of the plate. The heat from the hot water is transferred to the ice cream mix, heating this mix up to 180°F.

Right from there, the mixture enters the homogenizer.  Here the mix is exposed to high amounts of pressure so that the fat particles from the cream do not separate from the rest of the mix.  Then the heat from the ice cream mix is transferred to the cold water, cooling the ice cream mix down to 36°F.

The mix is then moved to a tank room.  This room is cooled down to 36°F degrees, where the mix will be stored for 4-8 hours which allows the ingredients to really form.  Next more flavorings are mixed in (such as vanilla, peppermint, purees, and other extracts).  Once the appropriate flavors are added it is then transported into the freezer.  The temperature has to be below freezing, most plants keep it at -40°F.

Freezing & Packaging

To further the process in making hard ice cream, it travels to the packaging area of the factory.  Here the soft serve ice cream is dispensed into various packaging containers and then delivered into the storing freezer before shipment. At this point the temperature of the mixture is around 22°F. For the mixture to reach a colder state it has to enter a spiral freezer where it travels around in a -60°F maintained temperature part of the plant.  When the ice cream leaves the spiral freezer it should be around -10°F. From there the ice cream cartons are stored into various freezing warehouses until they are shipped.


So what role does Pfannenberg play in this desired product?

Automation plays a critical role in the manufacturing of ice cream. Numerous electrical enclosures contain the critical electronics (VFDs and control components) to operate the machinery ranging from mixing to the final packaging. Even though these enclosures are found within a relatively cool environment, the temperature inside the cabinets needs to be maintained. Without proper enclosure cooling these electronics may overheat, bringing operations to a halt. Pfannenberg’s PWS Air to Water Heat Exchangers are ideal for cooling electrical components found in food and beverage processing facilities. The units can utilize existing cooled liquid while saving energy costs vs, traditional compressor based AC cooling units. Our cooling solutions make this cool summer treat possible.


Be sure to visit us at IBIE 2016 in Las Vegas, NV — October 8th-11th at Booth #9247 to learn more about our closed loop liquid cooling solutions.

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


Topics: Air Water Heat ExchangersThermal ManagementFood & Beverage

Pfannenberg Products Assist in Making an American Staple Summer Treat


Hot dogs – a staple summer treat that brings back memories of family cookouts and baseball games. It is an American favorite summertime food! Hot dogs go through a series of complex processes that combine the ingredients into their delicious final form and Pfannenberg’s PWS Air to Water Heat Exchangers are perfect to keep things running.

Meat Processing

The first step into creating one of the most loved foods is the preparation of the meat.  The meat is cut into small pieces and is placed into a large mixer.  These mixers have chopping blades to further cut the meat into smaller sizes. Here the raw ingredients and flavorings are added.  All are mixed until the mixture is a smooth paste consistency. Processes like this can require large control panels to operate the system and Pfannenberg’s PWS Air/Water Heat Exchangers are ideal for cooling your electrical components. Pfannenberg’s Air/Water Heat Exchangers utilizes chilled water, that is readily available, and an internal fan to provide cool air to prevent critical electronics from overheating.

Linking

The paste is always going through inspections throughout the entire process. After inspection from the mixer – the mix is moved into a stuffer.  This machine will push the paste into tube casings.  The casings are twisted at measured sections to make equally sized hot dogs. There are various casings – natural or artificial. The shaping of the hot dogs we all know is now complete.

Smoking

After the stuffing and linking, the hot dogs are then moved to a smokehouse to cook under controlled conditions.  Manufacturers can control the temperature and the difference flavors that the smoking has on the hot dog by using difference smoke sources.  Average time it takes in this step is an hour.

Final Processing

Once the smoking is completed, the link casings are removed by an automatic peeler.  During this time, the hot dogs are sprayed with water to help bring down their temperature.  Then the hot dogs are then transported to be packaged. Before going into the final packaging, the hot dogs are inspected to make sure there are no foreign ingredients in the product.

Pfannenberg has experience with inspection and x-ray equipment. Pfannenberg was able to combine a Chiller and PWS Air to Water Heat Exchanger to cool the x-ray tubes as well as the electrical enclosure as one example.

The packaging machines can process thousands of hot dogs in an hour.  They are operating at very fast speeds and require proper thermal management cooling to keep their machines up-and-running. Once packaged, hot dogs are inspected again, freshness dates are added, and they are all boxed up to be transferred to the warehouse for refrigeration until they are shipped. The entire process from start to finish, only takes a few hours.


Click Here to read “Chillers for X-Ray Machines – A Food & Beverage Success Story”.


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

Chillers for X-Ray Machines – A Food & Beverage Success Story


With the next round of Food Safety Modernization Act (FSMA) updated regulations taking into effect September, food processing companies are scurrying to make sure their facilities are up to code. The newest set of updates will support efforts into the quick responses to food/beverage related emergencies (contamination, expired products, recalls, and foreign materials). The new amendments also require that the FDA inspect the food production facility every two years to make sure that the facility and products adhere to all regulations.

A simple first step into maintaining food processing safety is x-ray/inspection equipment for product safety and making sure the machines operate properly.  In making sure these machines operate properly, one has to make sure that they have the proper thermal management equipment; something in which Pfannenberg has extensive experience in.

Success Story

Pfannenberg worked directly with a food and beverage inspection OEM to provide complete engineering solutions for the cooling of x-ray tubes and the internal cavity of their inspection machines. These machines would end up in various food & beverage and pharmaceutical end use facilities.  Before meeting with Pfannenberg our customer used several different competing thermal management products; conventional cabinet air conditioners to cool the machine cavity, two small internal fans to move the air around and a small chiller. It was costly, cumbersome while leading to additional maintenance costs and condensate issues.

The Pfanneberg team came up with a solution to utilize a CC Chiller in conjunction with a small PWS Air to Water Heat Exchanger to cool the x-ray tubes and internal cavity.  By combining products and eliminating an air conditioning unit, the Pfannenberg option required less maintenance and was more cost effective eliminating dependencies on different competing products.


Click Here To read, “The Technology of Cooling Part 4: Closed Loop Liquid Cooling Solutions”.


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

Click here to learn more about Pfannenberg’s CC series chillers.

Topics: Air Water Heat ExchangersPackaged ChillersFood & BeverageChillers

The Technology of Cooling Part 4: Closed Loop Liquid Cooling Solutions

1. Air to Water Heat Exchangers

Pfannenberg Air to Water Heat Exchangers use a supplied water source to remove the heat from the electrical cabinet. The heat from the enclosure is transferred to fluid and the heated fluid is then piped away adding no heat to the ambient environment.  Because there is no heat transfer to the ambient environment, there is no need to de-rate the units performance in high ambient conditions.

 

How do I know if a Air to Water Heat Exchanger is the right product for my application?

  • If there is a chilled water supply readily available at the enclosure.
  • If the environment has extreme conditions like extremely high ambients, extremely dirty or caustic, that make other systems not applicable.

Properly sizing a Air to Water Heat Exchanger

To properly size an Air to Water Heat Exchanger you must know the required cooling capacity in Watts, available water temperature and the dimensions of the unit and enclosure.

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.

Important information when utilizing Air to Water Heat Exchangers for enclosure cooling:

  • The performance of an Air to water Heat Exchanger is directly related to the difference in the water temperature and the air temperature inside the enclosure.
  • To manage condensation, an external condensation evaporator (KVDTX) can be used.
  • 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.
  • 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.
  • Make sure unit is level.

2. Chillers

A chiller uses a refrigeration cycle to remove the collected heat from a circulating liquid. As the liquid moves through a system of tubes and pipes it absorbs the heat generated by equipment and processes.  This generated heat is then transferred by the liquid back to the chiller where it is dissipated. Fluid is cooled and sent back into the system.

 

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

  • When higher heat loads that exceed traditional enclosure cooling methods need to be managed.
  • When precise temperature control is required as part of the manufacturing process.
  • Large fluctuations in heat load requirements need to be managed.
  • It allows the source of cooling to be located separately from harsh environments.

 

Selecting the correct Pfannenberg Chiller

Choosing the best packaged chiller to meet the demanding requirements of today’s industrial applications can be complicated. For that reason, Pfannenberg designed a 6 step guide to help you select the best chiller depending on your environment, process and type of application. Click on the picture to open the PDF or use this link!

 

Important information when utilizing Chillers:

  • Chillers can be installed indoors if the area around the unit is relatively clean and the air is temperate.
  • Locating the chiller outside can be a good option and can improve the efficiency of the chiller depending on temperature.
  • Extreme temperatures can cause capacity issues or the need for additional options such as a low ambient package.
  • A chiller should be sized as close to the required capacity based on the desired chilled liquid supply temperature and the highest expected ambient temperature.

3. Combined Chillers and Air to Water Heat Exchangers

liquid_cooling_3D.jpg

When a Liquid Cooling Source is not available on site, use the combination of chillers and air/water heat exchangers to simplify the cooling of your processes, machines and controllers as part of a system based solution.

Via a closed pipeline system that uses a highly economical supply of cooled liquid (e.g. water, glycol or oil) as the cooling medium, temperature can be managed within your process and as the cooling medium for the air conditioning of control cabinets. When cooling cabinets with PWS Air/Water Heat Exchangers the thermal management is 100% independent from the ambient temperatures at the installation location.

Click here for more detailed information about Closed Loop Liquid Cooling Solutions!


A properly selected Thermal Management is key to guarantee the longevity of critical electronics. Pfannenberg place the klowledge and technical expertise of its engineers at your disposal for you to find the best solutions for your requirements.

Find the 3 previous articles of this “Technology of Cooling” serie:

Closed Loop Liquid Cooling Reduces Downtime, Maintenance & Repair Costs for Commercial Bakeries

Pfannenberg’s Cooling Solutions Help Keep Equipment Running for One of the Fastest Growing Independent Wholesale Bakers in America.

Flour is one of the paramount enemies of electrical enclosures and enclosure air conditioners, particularly in the make-up area of a commercial bakery. Keeping the electronics cool which power the machines, is essential to the entire operation of the Schwebel Baking Company. Without the electrical enclosures staying cool, the machines fail and require replacement or downtime for repair.

Pfannenberg’s PWS Series Air/Water Heat Exchangers were an ideal solution for the Schwebel Baking Company, these Air/Water Heat Exchangers utilize glycol or a cool water source that is already available in the factory, to cool their electrical units. Pfannenberg’s Air/ Water Heat Exchanger has no filters, which means there is no down time trying to change filters or having them becoming clogged.

By installing Pfannenberg’s Air/Water Heat Exchangers, Schwebel’s was able to see a significant difference in the cleanliness of their electrical cabinets as well as in the efficiency of the cooled air.

 

Pfannenberg’s PWS Series Air to Water Heat Exchangers were the precise solution for Schwebel’s manufacturing process. Incorporating closed loop cooling with Air/Water Heat Exchangers improved performance, reduced maintenance, was energy efficient, and prevented unplanned repairs.


Click Here to Download the Case Study in PDF


 

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

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

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

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