杜邦R407C（SUVA 407C）环保制冷剂 DuPont R407C Refrigerant

有关R407C（SUVA 407C）制冷剂
R407C制冷剂是一款由HFC类物质组成混配制冷剂，不含任何破坏臭氧层的物质，其ODP值为零。R407C的性能与R22非常接近，可的利用现有R22系统的设计，替换冷媒时只需对少量的部件进行更换或调整。由于R407C为非共沸制冷剂，相变进程存在较大的温度滑移，因此不能采用满液式换热器作为蒸发器，并且在售后维修再补充过程中，在某些情况下，可能需要排掉系统中剩余的制冷剂然后再重新加注；同时为了保证制冷剂的成分不发生改变，R407C必须以液态形式充注。R407C是家用空调中R22制冷剂的过渡性替代品。

R407C（SUVA 407C）制冷剂的主要应用
R407C 主要应用于家用空调、中小型中央空调、机房空调、除温机、汽车空调、船用空调等。

R407C（SUVA 407C）制冷剂的用油参考
绝大多数压缩机生产商建议使用多元醇酯POE（Polyol Ester）冷冻机油。

R407C（SUVA 407C）制冷剂包装
包装：净重11.35kg/瓶（Net Weight 25lb）；850kg/瓶（要回收包装钢瓶）。

表 1 提供了R-407C（SUVA 9000）和R-410A（SUVA 9100）的主要物化性质

物理性质                                    单位                       R-407C                    R-410A                      R-22
分子量                                        g/mol                     86.2                         72.58                         86.47
25℃下的蒸气压力                      Kpa.abs                1174.1                     1652.9                       1043.1
                                                   Psia                       170.29                     239.73                       151.40
沸点（1atm）                             ℃                           -43.56                     -51.53                        -40.80
                                                    ℉                            -46.40                     -60.76                         -41.40
临界温度                                     ℃                           86.74                       72.13                          96.24
                                                    ℉                            188.13                     161.83                        205.24
临界压力                                      Kpa.abs                 4619.10                  4926.10                      4980.71
                                                    Psia                        669.95                    714.5                          722.39
临界密度                                     kg/m3                      527.30                   488.90                         524.21
                                                   1b/ft3                       32.92                      30.52                          32.73
25℃下的液体密度                      kg/m3                      1134.0                    1062.4                        1194.68
                                                   1b/ft3                        70.80                      66.32                         74.53
25℃下饱和气体密度                   kg/m3                      41.98                       65.92                         44.21
   ;                                                1b/ft3                        2.62                         4.12                           2.76

表 2 列出了R-407C、R-410A、R-22的理论循环性能

制冷剂                                        R-22                         R-407C                      R-410A
制冷容量                                    1.00                          1.00                           1.45
有效系数                                    6.43                          6.27                           6.07
压缩比（率）                             2.66                          2.83                           2.62
压缩机释放温度 ℃(℉)                 77.3(171.2)              75.1(167.1)                (166.37)
压缩机释放压力 kpa （Psia）   1662(241.0)              1763(255.6)                 -
温度滑移                                     0(0)                          4.9(8.9)                       0(0)

注：温度如下——冷凝器：43.3℃，蒸发器： 7.2℃，低温冷却： 2.8℃，过热： 8.3℃。