FIELD: storage of refrigerated products. SUBSTANCE: food-stuff is treated with nitric acid in refrigerating cabinet. Waste gaseous nitrogen is delivered either to frozen chamber and/or to chilled product chamber and then either to heat-exchange apparatus of air-conditioning system and/or outside. If necessary, liquid nitrogen may be delivered to chambers. EFFECT: increased use of low-temperature potential of gaseous nitrogen at reliable preservation of various products. 3 cl, 1 dwg, 1 ex
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