FIELD: chemistry.
SUBSTANCE: invention relates to a working medium of the heat cycle comprising 1,1,2-trifluoroethylene in an amount of at least 20 wt % and difluoromethane in amounts of at least 1% by weight in the production environment (100 wt %), and to the heat cycle system employing the working environment.
EFFECT: reduction of flammability, less impact on the ozone layer and global warming, excellent performance and safety of the heat cycle system.
12 cl, 6 tbl, 3 dwg, 5 ex
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