| 摘要 |
A dilution control apparatus for use in an absorption cooling system of the type which uses a refrigerant and an absorbent, and which includes a generator, a condenser having a condenser sump, an absorber having an absorber sump, and an evaporator having an evaporator sump. At least one refrigerant reservoir is arranged to receive refrigerant condensing within the condenser, and to store a quantity of refrigerant which, if released into the system during the dilution phase of the system shutdown process, is sufficient to lower the concentration of the refrigerant-absorbent solution to a concentration low enough to prevent crystals from forming in the absorber after the shutdown process has been completed. Refrigerant is released from the at least one refrigerant reservoir to the evaporator sump at a variable rate, through a first refrigerant releasing path, when the system operates under a cooling load that fluctuates with time. Refrigerant is released from the at least one refrigerant reservoir to the evaporator sump, through the first refrigerant releasing path and through a second refrigerant releasing path, when the system is being shut down.
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