| 摘要 |
An apparatus and method for controlling the venting of vapor from a vessel utilizes a differential vapor pressure detection means to measure the difference between vapor pressure in the vessel and the vapor pressure associated with a reference sample which is exposed to the temperature conditions within the vessel. Vapor venting from the vessel is controlled in response to the measured pressure difference. In a preferred embodiment, the invention is applied to a refrigeration system which uses impure refrigerant in its operation and a substantially pure refrigerant for the reference sample, wherein impurities are vented from a refrigerant-containing surge vessel. |
