Compression refrigerator of low refrigeration capacity

摘要

The counter flow heat exchanger (3) is integrated in the expansion machine eg. a gas turbine (4). The compressor is a sealed Roots type compressor pump (1), driven in a vacuum range, suitable for producing a pressure difference up to 100 mbar. The gas turbine (4) is provided with a shaft dynamic seal. This dynamic shaft seal is designed as a screw compressor. The gas turbine (4) has an electrodynamic brake (9). The compression refrigeration machine is designed as a single stage compression refrigeration machine.