| 摘要 |
<p>This invention introduces an absorption vapor pressure enhancement operation. In the process, a mass of solvent vapor is absorbed into an absorbing solution under a first pressure and an equivalent amount of second vapor is produced under a second pressure that is substantially higher than the first pressure. The pressure enhancement is accomplished by the dilution of the absorbing solution. A vapor pressure enhancement operation (98, 99) applied to a low pressure vapor is functionally equivalent to compressing a low pressure vapor. By using a multiple stage pressure enhancement operation (98, 99), a very high level of temperature lifting of heat can be accomplished. The process can be adopted in processes in which low pressure vapors are generated. Examples are freeze drying processes and multiple phase transformation processes such as Vacuum Freezing Processes, Eutectic Freezing Processes and Distillative Freezing Processes.</p> |
