HEAT RECOVERY AND UPGRADING METHOD AND COMPRESSOR FOR USING IN SAID METHOD

摘要

A heat recovery and upgrading method includes cycles of the subsequent steps of providing a working fluid including a liquid phase in a working fluid stream; transferring heat to the working fluid stream to partially evaporate working fluid in liquid phase to obtain a two-phase working fluid stream in liquid phase and gas phase; compressing the two-phase working fluid stream so as to increase a temperature and pressure of the working fluid and to evaporate working fluid in liquid phase; and transferring heat from the working fluid stream by element of condensation of working fluid. In the first step he working fluid is preferably in a predominantly single-phase working fluid stream in liquid phase when heat is transferred to the working fluid. In the third step working fluid in liquid phase is preferably evaporated so that a two-phase working fluid stream is maintained, especially a wet gas-phase working fluid.

主权项

1. heat recovery and upgrading method comprising cycles of the subsequent steps of
a.—providing a working fluid comprising a liquid phase in a working fluid stream (11); b.—transferring heat (20) to the working fluid stream (11) such as to partially evaporate working fluid in liquid phase to obtain a two-phase working fluid stream (12) in liquid phase and gas phase; c.—compressing (30) the two-phase working fluid stream (12) so as to increase a temperature and pressure of the working fluid and to evaporate working fluid in liquid phase; and d.—transferring heat (40, 60) from the working fluid stream (13, 14, 15) by means of condensation of working fluid.