Two phase fluid heat exchanger

Claim 1

HEAT EXCHANGING APPARATUS COMPRISING A HOUSING HAVING A SUBSTANTIALLY CYLINDRICAL CASING, AN UPPER CLOSURE MEMBER AND A LOWER CLOSURE MEMBER; AN UPPER TUBE SHEET AND A LOWER TUBE SHEET POSITIONED INSIDE OF SAID CASING AND SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID CASING; A FIRST HEAD CONNECTED TO THE LOWER SIDE OF SAID LOWER TUBE SHEET TO FORM A FIRST CHAMBER; A SECOND HEAD CONNECTED TO THE UPPER SIDE OF SAID UPPER TUBE SHEET TO FORM A SECOND CHAMBER; A PLURALITY OF TUBES CONNECTED BETWEEN SAID UPPER AND LOWER TUBE SHEETS AND IN FLUID COMMUNICATION WITH SAID FIRST AND SECOND CHAMBERS; A FIRST CONDUIT MEANS PASSING THROUGH SAID HOUSING TO PROVIDE FLUID COMMUNICATION BETWEEN SAID SECOND CHAMBER AND SAID FIRST CONDUIT MEANS; A SECOND CONDUIT MEANS PASSING THROUGH SAID HOUSING TO PROVIDE FLUID COMMUNICATION BETWEEN SAID FIRST CHAMBER AND SAID SECOND CONDUIT MEANS; MEANS FOR SEPARATING A TWO PHASE FLUID INTO A LIQUID PORTION AND A VAPOR PORTION; MEANS FOR PASSING SAID VAPOR PORTION DOWNWARDLY IN SAID HOUSING AND IN SUBSTANTIALLY EQUAL HEAT EXCHANGING RELATIONSHIP WITH EACH OF SAID PLURALITY OF TUBES, MEANS ADJACENT SAID UPPER TUBE SHEET FOR SPRAYING SAID LIQUID PORTION AGAINST SAID PLURALITY OF TUBES IN SUBSTANTIALLY EQUAL HEAT EXCHANGING RELATIONSHIP WITH EACH OF SAID PLURALITY OF TUBES, AND THIRD CONDUIT MEANS CONNECTED TO A LOWER PORTION OF SAID HOUSING FOR WITHDRAWING THEREFROM THE TWO PHASE FLUID AFTER IT HAS BEEN PASSED IN CONTACT WITH SAID PLURALITY OF TUBES.