| 摘要 |
PURPOSE:To obtain a refrigerant composition which does not cause ozonosphere depletion, can substitute for conventional refrigerants without changing the existing equipment and is noncombustible. CONSTITUTION:This composition comprises difluoromethane, 1,1,1,2- tetrafluoroethane and hexafluoroethane and has a chemical composition in the range within the polygon having the vertices of the coordinates [1;69;30], [1;87;12], [37;62;1], [50;49;1] and [56;39;5] in terms of the molar percentages of the respective components in the above given order in the triangular diagram. |
