FIELD: refrigerating engineering. SUBSTANCE: part of forward flow of air cooled and dehumidified in change-over passages is heated in non-change-over passage and is fed to change-over passages after passing of forward flow for sublimation of part of water steam and carrying it to sections of passages at higher temperature, thus ensuring complete removal of ice from checker and walls of passages from forward flow by reverse flow passing through change-over passages of heat exchanger. EFFECT: enhanced efficiency. 1 dwg
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