IN THIS ISSUE: Linking Ovens, Fryers, Freezers • Understanding RTDs • What Excess Exhaust is Costing You • Reprocessing Heat Transfer Fluids • TEMA Heat Exchanger • and more
Controls Platform Simplifies Food Processing Line Monitoring A controls platform that connects equipment across a processing line has been re-engineered to handle full lines of fryers, ovens, freezers, coating equipment and conveyors. Long offered for process ovens, FMC FoodTech’s Link allows food processing line operators to monitor each piece of equipment closely to maintain product quality throughout each batch.
The control’s line-speed-synchronization feature automates the manual speed adjustment of each conveyor belt across the line, including those involved in frying, ovens,freezers, coating and conveyors. For example, synchronization allows for the progressive stopping of an entire line should faults occur and
interrupt a section of the belt. In these situations, equipment with a heat source would continue to run while equipment without a heat source would automatically stop. The company reports that this automated belt synchronization reduces setup and operational errors, minimizes waste, increases productivity and improves product consistency.
The control platform’s recipe-management system is designed to reduce setup times and improves product consistency between batches. The feature allows the running parameters of up to 2,000 process line recipes to be stored on the system for future use. Once stored, it is possible to search the recipes by name, product code, or produce recipe analysis reports. The control system also includes central data collection: As the processing line runs, parameters on items such as temperatures, belt speeds and pressures are automatically collected and compiled. Operators can access real-time or historic data as needed from the collection.
The ABCs of Hot Oil Heaters When correctly maintained and operated, thermal fluid systems can provide many years of safe, reliable and efficient process heating where moderate to high temperatures are required.
Understanding RTDs To use an RTD, a small voltage is passed through the element and then measured. The resistance of the RTD element reduces the voltage, and this voltage drop can be converted into a temperature measurement.
Jacket Temperature Control Compact brazed heat exchangers helped a manufacturer of pharmaceutical ingredients and intermediates achieve tight temperature control of its reactors.
Power Controllers For Short-Wave Infrared Two case histories describing typical situations on a paper production line illustrate how communicating SCRs can manage the power control in these types of applications effectively.
And Now, the Bad NewsSite Registration Required to View Combustion expert Dick Bennett points out the evil effect of heat exhaust losses.
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PRODUCTS
Temperature Control System for Laboratory, Pilot Applications Haake DynaMax quickly dissipates heat from exothermic chemical reactions. Features include fast temperature cooling and heating rates, precise temperature stability, high heating and cooling capacities and interfaces for external control. Applications of the temperature control system include jacketed reactors, large rotary evaporators, reaction calorimetry, fermentation and cooling analytical equipment.
Compact, Single-Channel Chillers Series KD-100 has a CFC-free refrigeration system with compressor hot discharge gas bypass. The standard digital display temperature controller offers display of process/setpoint temperature and provides stability to ±1.0°C. The compact, single-channel chillers’ circulating pump and compressor motors are thermally protected. Standard features include a pressure gauge to indicate recirculating coolant outlet pressure and locking casters for easy portability. Heavy-duty circulating pumps ensure continuous, reliable operation.
Mineral-Insulated Band Heaters Mi-Plus is designed for applications that require high watt density and/or high operating temperatures. The mineral-insulated band heater has a thin, low-profile cross-section using all stainless steel sheath materials. Its clamping brackets are formed from the outer sheath of the band heater, providing a one-piece, built-in construction strap. With a maximum temperature of 1,400°F (760°C), the band heater can be constructed as an expandable one-piece device or with two-piece construction for larger nozzles or barrels.
High Density Modular Control System Intended to replace banks of discrete temperature controllers, the SRZ DIN-rail-mounted system has a sample cycle time of 250 ms, providing an accuracy of 0.2 percent. In addition to the typical heat only and heat/cool methods, the control method is selectable between position-proportional control and cascade control. The Brilliant PID II algorithm with enhanced tuning achieves a quick rise or drop to setpoint and with greater protection from over- and undershoot cause by external disturbances. True universal input includes 10 thermocouples types, RTD, voltage or current.
Reclaim Heat Transfer Fluids Using CMS short-path, high-vacuum technology or packed column technology, the company can restore contaminated high performance fluids and specialty fluids to their original high-purity state with high yields. Under most conditions, the company returns approximately 90 percent of the contaminated fluid to like-new quality. Fluids capable of being reclaimed include heat transfer fluids, perfluorocarbons specialty fluids, Fluorinerts, polyphenyl ethers, and dielectic fluids. Reclamation and reprocessing allows users to reuse fluids many times to gain greater cost efficiencies.
TEMA Heat Exchangers Heat exchangers can be fabricated in all TEMA configurations, including single- and multi-pass as well as "U" tube configurations, with or without removable bundles. Heads can be fabricated using traditional bonnets or with channels to facilitate cleaning the tube side. Impingement protection is available to prevent wear of the tubes on inlet connections. Several types of supports are available such as saddles for horizontal units and lugs for vertical units. all heat exchangers meet the requirements of TEMA and can be designed to the ASME Section VIII Division 1 or Division 2 codes.
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The control’s line-speed-synchronization feature automates the manual speed adjustment of each conveyor belt across the line, including those involved in frying, ovens,freezers, coating and conveyors. For example, synchronization allows for the progressive stopping of an entire line should faults occur and
interrupt a section of the belt. In these situations, equipment with a heat source would continue to run while equipment without a heat source would automatically stop. The company reports that this automated belt synchronization reduces setup and operational errors, minimizes waste, increases productivity and improves product consistency.
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