Refrigerant for replacing freon-12 in centrifugal type cooling water unit
A chiller and refrigerant technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve problems affecting the normal operation of the unit, and achieve the effect of reducing the greenhouse effect
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Embodiment 1
[0051] Example 1: 1% of chlorodifluoromethane (HCFC-22), 52.5% of 1,1,1,2-tetrafluoroethane (HFC-134a) and 46.5% of 1,1,1,2 , 3,3,3-heptafluoropropane (HFC-227ea) three substances are physically mixed in the liquid phase and then filled into the flooded evaporator unit; or 2% of chlorodifluoromethane (HCFC-22), 58 % of 1,1,1,2-tetrafluoroethane (HFC-134a) and 40% of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) in the liquid phase After physical mixing, it is charged into the dry evaporator unit. Its environmental parameters, physical parameters and thermal performance are shown in Table 6.
Embodiment 2
[0052] Example 2: 4% of chlorodifluoromethane (HCFC-22), 47% of 1,1,1,2-tetrafluoroethane (HFC-134a) and 49% of 1,1,1,2 , 3,3,3-heptafluoropropane (HFC-227ea) three substances are physically mixed in the liquid phase and then filled into the flooded evaporator unit; or 7% of chlorodifluoromethane (HCFC-22), 52 % of 1,1,1,2-tetrafluoroethane (HFC-134a) and 41% of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) in the liquid phase After physical mixing, it is charged into the dry evaporator unit. Its environmental parameters, physical parameters and thermal performance are shown in Table 6.
Embodiment 3
[0053] Example 3: 1% of 1,1,1-trifluoroethane (HFC-143a), 52.5% of 1,1,1,2-tetrafluoroethane (HFC-134a) and 46.5% of 1, The three substances of 1,1,2,3,3,3-heptafluoropropane (HFC-227ea) are physically mixed in the liquid phase and then filled into the flooded evaporator unit; or 2% of 1,1,1-three Fluoroethane (HFC-143a), 58% of 1,1,1,2-tetrafluoroethane (HFC-134a) and 40% of 1,1,1,2,3,3,3-heptafluoropropane (HFC -227ea) The three substances are physically mixed in the liquid phase and then charged into the dry evaporator unit. Its environmental parameters, physical parameters and thermal performance are shown in Table 6.
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