| 摘要 |
A refrigeration purging system removes non-condensible gases, such as air, and condensible contaminants such as water. A portion of the refrigerant is placed in a first purge chamber, which condenses the refrigerant and condensible contaminants, leaving noncondensibles and a small portion of the refrigerant at the top of the chamber. The non-condensibles and remaining refrigerant are extracted from the first chamber, pumped to a higher pressure and passed to a second purged chamber, where the remaining refrigerant is condensed and returned to the first purged chamber. The noncondensible gases remaining are released to the atmosphere. The condensible contaminants are extracted from the first purged chamber and the condensed refrigerant is returned to the refrigeration system.
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