APPARATUS FOR UTILIZING HEAT OF USED DRYING AGENT OF CONVECTIVE DRIERS Russian patent published in 2006 - IPC F26B21/04 F25B29/00 

FIELD: heat engineering, in particular, used gas heat utilizing equipment.

SUBSTANCE: apparatus has heat carrier circulation contour comprising contact economizer with used drying agent inlet branch pipe and cooled used drying agent outlet branch pipe, heat pump comprising compressor, condenser, throttle and evaporator connected to circulation contour upstream of contact economizer. Tubular heat-exchanger is positioned upstream of contact economizer. Influx air is heated in tubular heat-exchanger and is then supplied into convective drier.

EFFECT: increased economy of used drying agent heat utilizing apparatus owing to reduced consumption of power for driving of heat pump compressor and more complete utilization of used drying agent heat owing to preliminary cooling of drying agent to saturation state.

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