Heat exchange – Three non-communicating fluids
Patent
1982-04-21
1984-07-31
Richter, Sheldon J.
Heat exchange
Three non-communicating fluids
165145, 165163, F28D 702
Patent
active
044624638
ABSTRACT:
A triple pass heat exchanger for use in a solar energy heating or cooling system includes an assembly of four helically wound lengths of tubing. The helical tubes are arranged relative to each other in a substantially concentric manner so that the first tube is innermost, the second tube outward to the first tube, the third tube outward to the second tube and the fourth tube outward to the third tube. The first and third tubes are coupled in flow communication at a first common inlet and a first common outlet, and the second and fourth tubes are coupled in flow communication at a second common inlet and a second common outlet. A first liquid heat transfer medium flows through the first and third tubes and a second liquid heat transfer medium flows through the second and fourth tubes. A shell encloses the assembly within an inner chamber defined by the shell. The shell has an inlet port and an outlet port so that a third liquid heat transfer medium may be flowed through the inner chamber and across the exterior of the assembly in heat transfer relationship to the second liquid heat transfer medium flowing through the second and fourth helical tubes.
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