Controlling the heat exchangers of air condensation apparatus

Claim 1

IN A HEAT EXCHANGER FOR COOLING WATER WITH ATMOSPHERIC AIR, A PAIR OF HEAT EXCHANGER SECTIONS THROUGH WHICH WATER TO BE COOLED IS ADAPTED TO FLOW, SAID SECTIONS BEING ARRANGED BESIDE EACH OTHER WITH ONE OF SAID SECTIONS IN ADVANCE OF THE OTHER WITH RESPECT TO THE DIRECTION OF AIR FLOW SO THAT SAID ONE SECTION IS CONTACTED BY ATMOSPHERIC AIR BEFORE THE OTHER SECTION, SAID HEAT EXCHANGER SECTIONS RESPECTIVELY HAVING ADJACENT EACH OTHER A PAIR OF COMMUNICATING ENDS THROUGH WHICH SAID HEAT EXCHANGER SECTIONS COMMUNICATE DIRECTLY WITH EACH OTHER, AND SAID HEAT EXCHANGER SECTIONS ALSO HAVING ADJACENT EACH OTHER A PAIR OF NON-COMMUNICATING ENDS OPPOSED TO SAID COMMUNICATING ENDS, RESPECTIVELY, A PAIR OF TUBULAR STUBS RESPECTIVELY COMMUNICATING WITH SAID NON-COMMUNICATING ENDS OF SAID HEAT EXCHANGER SECTIONS, A SUPPLY CONDUIT FOR SUPPLYING WARM WATER TO BE COOLED, A RETURN CONDUIT FOR WITHDRAWING COOLED WATER FROM THE HEAT EXCHANGER SECTIONS A PAIR OF INLET VALVES BOTH COMMUNICATING WITH SAID SUPPLY CONDUIT AND RESPECTIVELY COMMUNICATING WITH SAID TUBULAR STUBS, AND A PAIR OF DISCHARGE VALVES BOTH COMMUNICATING WITH SAID RETURN CONDUIT AND RESPECTIVELY COMMUNICATING WITH SAID TUBULAR STUBS, WHEREBY SAID VALVES MAY BE MOVED BETWEEN OPEN AND CLOSED POSITIONS PROVIDING A FLOW OF WATER FROM SAID SUPPLY CONDUIT FIRST THROUGH SAID ONE HEAT EXCHANGER SECTION AND THEN THROUGH SAID OTHER HEAD EXCHANGER SECTION, TO PROVIDE A CROSS PARALLEL FLOW, OR FIRST THROUGH SAID OTHER HEAD EXCHANGER SECTION AND THEN THROUGH SAID ONE HEAT EXCHANGER SECTION TO PROVIDE A CROSS COUNTERFLOW IN ORDER TO INCREASE THE THERMAL PERFORMANCE AS COMPARED TO THE THERMAL PERFORMANCE DURING CROSS PARALLEL FLOW.