| 摘要 |
The loss of trace gas to the atmosphere when leak testing heat exchangers is avoided by the use of internal and external containers, with both the trace gas sensor and the coil to be tested being placed within the internal container. The space between the two containers is preferably placed under a vacuum, and the inner and outer containers are fluidly connected to a refrigerant recovery vessel for the accumulation of leaked trace gas. The trace gas can then be returned to the charging system for reuse. The use of extractors can also be made to conduct the flow of leaked trace gas from the containers to the refrigerant recovery vessel. A containment that is also provides to receive and contain any contaminated refrigerant from the two containers.
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