霍尼韦尔R407C（Genetron 407C）环保制冷剂 Honeywell R407C Refrigerant

有关R407C（Genetron 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（Genetron 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（Genetron 407C）制冷剂用油参考
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（Genetron 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（Genetron 407C）和R-410A（Genetron AZ-20）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℃。