Heat exchange system having interme-diate fluent material receiving and discharging heat

Claim 1

A HEAT EXCHANGER FOR EXCHANGING HEAT BETWEEN AN AQUEOUS SALINE SOLUTION ENTERING A SALINE WATER CONVERSION APPARTUS AND AN EFFLUENT LIQUID DISCHARGED FROM SAID SALINE WATER CONVERSION APPARATUS COMPRISING: (A) AN INLET HEAT EXCHANGER ADAPTED TO CONTAIN A QUANITY OF AN AQUEOUS SALINE SOLUTION ENTERING SAID APPARATUS, AND HAVING MEANS FOR INTRODUCING AQUEOUS SALINE SOLUTION INTO SAID INLET HEAT EXCHANGER; (B) AN OUTLET HEAT EXCHANGER ADAPTED TO CONTAIN A QUANTITY OF AN EFFLUENT AQUEOUS LIQUID DISCHARGED FROM SAID APPARATUS, AND HAVING MEANS FOR INTRODUCING AQUEOUS EFFLUENT LIQUID INTO SAID OUTLET HEAT EXCHANGER; (C) PASSAGE MEANS PASSING LIQUID OCTAFLUOROCYCLOBUSTANE INTO DIRECT CONTACT WITH THE AQUEOUS SALINE SOLUTION IN SAID INLET HEAT EXCHANGER TO EXCHANGE HEAT THEREWITH; (D) PASSAGE MEANS PASSING LIQUID OCTAFLUOROCYCLOBUTANE FROM SAID INLET HEAT EXCHANGER TO SAID OUTLET HEAT EXCHANGER IN DIRECT CONTACT WITH THE AQUEOUS EFFLUENT LUQIID THEREIN TO EXCHANGE HEAT THEREWITH; (E) PASSAGE MEANS PASSING LIQUID OCTAFLUOROCYCLOBUTANE FROM SAID OUTLET HEAT EXCHANGER TO SAID INLET HEAT EXCHANGER FOR RECONTACT WITH AQUEOUS SOLUTION THEREIN; (F) A STRIPPING VESSEL COMPRISING A LOW PRESSURE REGION; (G) PASSAGE MEANS PASSING THE AQEUOUS EFFLUENT LIQUID FROM SAID OUTLET HEAT EXCHANGER TO SAID STRIPPING VESSEL FOR EVAPORATION OF OCTAFLUOROCYCLOBUTENE IN SAID LOW PRESSURE REGION REMAINING IN SAID EFFLUENT LIQUID; AND (H) CONDENSER MEANS CONDENSING AND RECOVERING LIQUID OCTAFLUOROCYCLOBUTANE FROM OCTAFLUOROCYLOBUTANE VAPORIZED IN SAID LOW PRESSURE ZONE.