R600a Chiller Prototype with Oil-Free Centrifugal Compressor: Danfoss and ENGIE Refrigeration
Danfoss and ENGIE Refrigeration are developing an R600a (isobutane) chiller prototype featuring an oil-free centrifugal compressor on magnetic bearings. The prototype, based on the Turbocor TNS385, demonstrates a preliminary cooling capacity of approximately 385 kW; validation is ongoing and no commercial launch has been announced.
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