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Combined Refrigeration Dunham bush, Hitachi compressor, screw compressor, danfoss, evaporator, condenser, unit cooler, process chiller, ac compressor, cooling tower, chiller water

Direct Refrigeration Systems

Certain process applications require the product to be cooled by a direct refrigerant to product heat exchanger. These systems are extremely efficient, but must take into consideration a number of special engineering requirements.

Case Study

Problem - Manufacturing of hydrogen peroxide is an exothermic process. Inadvertent contact with brines and other secondary fluids can result in a dangerous explosion. Thermal properties of h2o2 change as concentration varies during normal process cycles.

Solution - Single 50hp-screw compressor with 304 stainless steel evaporator. The vessel is pickled to provide a non-reactive heat exchanger surface. Microcomputer control systems interfaced with process control systems for automatic set point adjustment as production parameters vary.

Direct refrigeration systems are available from 5 to 1000-hp with refrigerant temperatures as cold as -45°C. Typical refrigerant options include R-22, R-134a, R-407c, R-404, and R-717.
To reach us by phone (281) 540 - 7552 or fax: (281) 540 - 8847
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e-mail us at sales@combinedrefrigeration.com

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