| 摘要 |
The invention provides a method and apparatus for recovering work from a heat source and providing a cooling source that comprises:a. providing a selected working fluid comprising at least two components; to a first low pressure pump;b. feeding the selected working fluid to a dividing means;c. dividing the working fluid into a first stream and a second stream,d. feeding the first stream at a first low pressure to a first heat transfer zone to transfer heat to the working fluid stream heating the stream to a higher temperature,e. feeding the higher temperature stream to a separation means,f. separating a volatile component enriched stream and a volatile component depleted stream;g. heating the volatile component enriched stream;h. feeding the volatile component enriched stream to an expansion meansi. expanding the volatile component enriched stream to a lower temperature and pressure;j. feeding the expanded lower temperature and pressure volatile component enriched stream to a mixing means;k. feeding the volatile component depleted stream to the mixing means;l. feeding the second working fluid stream to a high pressure pump and then to a second heat exchange zone wherein heat is transferred to the second working fluid stream to produce a higher temperature and pressure condition of the second working fluid stream;m. work expanding the higher temperature and pressure second working fluid stream to convert a portion of the heat energy to mechanical energy;n. feeding the work expanded second stream to the mixing means;o. mixing the streams to provide a combined working fluid stream;p. returning the combined working fluid stream to the feed-line of the first low pressure pumping stage to provide the selected working fluid.Preferably, the selected working fluid is selected from the group consisting of ammonia and water; sulfur dioxide and water; mixed hydrocarbons; ammonia and brine; or sulfur dioxide and brine. More preferably, the selected working fluid comprises ammonia and water or ammonia, water and salts. Most preferably, the selected working fluid consists essentially of ammonia and water. In an especially preferred embodiment, the volatile component enriched stream is substantially a pure component. The invention also provides an apparatus specially configured to carry out the method claimed above. |
