Claims
- 1. A heat exchanger for exchanging heat between a warmer fluid and a cooler fluid, said heat exchanger comprising:
- a) a housing having a divider for dividing the housing into separate chambers, one of which is adapted to contain said warmer fluid, and the other of which is adapted to contain said cooler fluid;
- b) a plurality of elongated cylindrical sleeves of relatively thin plastic film mounted in said housing such that the cylindrical sleeves extend through said divider and project into the two chambers and are in heat exchange relationship with the warmer and cooler fluids; and
- d) convective fluid in the cylinders.
- 2. A heat exchanger according to claim 1 wherein said convective fluid is a liquid.
- 3. A heat exchanger according to claim 2 wherein the fluid in each of said upper and lower chambers is a gas.
- 4. A heat exchanger according to claim 2 wherein said divider is horizontal and said cylindrical sleeves are oriented in a vertical direction.
- 5. A heat exchanger according to claim 4 wherein the chamber containing the warmer fluid is located above the chamber containing the cooler fluid.
- 6. A heat exchanger according to claim 5, wherein the fluid in each of said chambers is a gas.
- 7. A heat exchanger according to claim 1 wherein the thickness of the film is in the range 0.1 to 0.2 mm.
- 8. A heat exchanger according to claim 1 wherein said convective fluid includes water.
- 9. A heat exchanger according to claim 8 including means for causing the gas in each of said upper and lower chambers to flow in opposite directions.
- 10. A heat exchanger according to claim 1 wherein the fluid in each chamber is static.
- 11. A heat exchanger according to claim 10 wherein the fluid in each chamber is a liquid.
- 12. A heat exchanger according to claim 1 wherein the fluid in each chamber flows relative to the cylinders.
- 13. A heat exchanger according to claim 12 wherein the fluid in each chamber is a gas.
- 14. A heat exchanger according to claim 12 wherein the fluid in at least one of the chambers is a liquid.
- 15. A heat exchanger according to claim 12 wherein the fluid in at least one of the chambers is a gas.
RELATED APPLICATIONS
This is a division of application Ser. No. 07/356,681 filed May 25, 1989 now U.S. Pat. No. 4,981,021 issued Jan. 1, 1991 which is a continuation in part of application Ser. No. 07/148,709 filed Jan. 26, 1988 which is now U.S. Pat. No. 4,872,315; which is a divisional application of U.S. Ser. No. 06/798,841 filed Nov. 18, 1985 which is now U.S. Pat. No. 4,745,436; which is a divisional of U.S. Ser. No. 06/558,436 filed Dec. 6, 1983 which is now U.S. Pat. No. 4,583,370.
US Referenced Citations (12)
Divisions (3)
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Number |
Date |
Country |
Parent |
356681 |
May 1989 |
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Parent |
798841 |
Nov 1985 |
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Parent |
558436 |
Dec 1983 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
148709 |
Jan 1988 |
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