FIELD: chemistry.
SUBSTANCE: invention relates to a heat-exchange composition which can be used to replace existing coolants which must have a low global warming potential (GWP). The heat-exchange composition substantially consists of about 40 wt % to about 60 wt % R-152a, about 5 wt % to about 50 wt % R-134a and about 5 wt % to about 50 wt % R-1234ze(E). Said composition is zeotropic.
EFFECT: invention provides coolants with a low GWP, toxicity and inflammability with high energy efficiency of at least 95% with respect to a separate coolant.
45 cl, 1 dwg, 9 tbl
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