| 摘要 |
A gaseous working fluid is expanded from a charged high pressure level to a spent low pressure level to release energy and the working fluid is regenerated by, in at least one regeneration stage, condensing the working fluid in an absorption stage (A) by dissolving it in a solvent solution while cooling with a cooling medium, the solvent solution comprising a solvent having an initial working liquid concentration which is sufficient to provide a solvent solution boiling range suitable for absorption of the working fluid; increasing the pressure of the solvent solution containing the dissolved working fluid by means of a pump (P) and evaporating the working fluid being regenerated by heating in an evaporation stage (E); withdrawing the evaporated working fluid for expansion in turbine 52 to release energy; and recycling the balance of the solvent solution remaining after evaporation of the working fluid, to constitute the solvent solution for the absorption stage of that regeneration stage. The preferred working fluid is ammonia, the solvent is water and the heat source is ocean thermal energy. <IMAGE>
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