FIELD: air temperature control systems. SUBSTANCE: plant has compressor, diffuser, built-in annular heat exchanger, and turbo-expander kinematically coupled with compressor and provided with inlet and outlet devices, all arranged in tandem along air flow. Heat exchanger is built up of separate flange-mounted sections. Flanges are telescopically joined with case. Cooling air passages may have varying sectional areas over heat-exchanger length. Device is capable of controlling air temperature downstream of turbo- expander. EFFECT: facilitated manufacture and in-service maintenance. 2 cl, 4 dwg
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