German manufacturer Julabo has launched its PRESTO hydrocarbon range of control systems, containing only a small charge of propylene (R1270) and/or ethane (R170), for process cooling applications with working temperatures between -93 and 250°C (-135.4 and 482°F).
The new PRESTO A38, A41, W41, A70, W93 and W93x process systems were presented for the first time at the recent ACHEMA trade show for process industry professionals, which took place in Frankfurt, Germany, from August 22–26. These systems combine high performance and a very compact design, according to the manufacturer’s website.
“The highly dynamic temperature control systems from PRESTO are designed for high-precision temperature control for a wide range of applications, such as reactor vessels or material stress tests,” said Julabo.
Moreover, by using efficient components, the process systems can compensate for exothermic and endothermic reactions exceptionally fast, the company said. In addition, numerous interfaces offer many remote-control possibilities across networks or for integration into higher-level control systems.
The smallest system in the range is the air-cooled PRESTO A38. The compact system uses only 99g (3.5oz) of R1270 and offers a capacity of up to 2.7kW (0.8TR). The compact range also includes the A41, which comes in a water-cooled option, too – the W41. All the compact units are suited for working temperatures between -45 and 250°C (-49 and 482°F).
The air-cooled PRESTO A70 is a two-stage process system and offers high cooling capacities for temperatures down to -75°C (-103°F). The biggest system in the range, W93 (and W93x), can be used for working temperatures as low as -93°C (-135.4°F), using only 960g (34oz) of R1270 for refrigerant stage 1 plus 810g (29oz) of R170 for stage 2. It offers a cooling capacity of up to 19.5kW (5.5TR) with a heating capacity of up to 27kW (7.7TR).
“The highly dynamic temperature control systems from PRESTO are designed for high-precision temperature control for a wide range of applications, such as reactor vessels or material stress tests.”-Julabo
Saving space – safely
One of the biggest benefits of this range is its space-saving footprint. All connections, as well as supply- and exhaust-air, are located at either the front or the rear, meaning that there are no venting grids on the sides. Thus, units can be placed close to each other.
The units have also come with Classification III according to safety standard DIN12876-1, enabling safe operation, even with flammable fluids, noted Julabo. It comes complete with an automatic switch-off in the event of high temperature or low liquid level.
These temperature-control instruments are also robust, ensuring continuous operation even at ambient temperatures of up to 40°C (104°F), said Julabo.
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