Rotary solid sorption heat pump with embedded thermosyphons

• US 5,408,847 A
• Filed: 05/26/1993
• Issued: 04/25/1995
• Est. Priority Date: 05/26/1993
• Status: Expired due to Fees

• Current Assignee: Donald C. Erickson
• Original Assignee: Donald C. Erickson
• Inventors: Erickson, Donald C.
• Primary Examiner(s): Bennet, Henry A.
• Assistant Examiner(s): DOERRLER, WILLIAM CHARLES
• Application Number:
  US08/067,786
• Time in Patent Office: 699 Days
• Field of Search: 62/478, 62/480, 62/106, 165/104.12
• US Class Current: 62/478
• CPC Class Codes: F25B 17/086 with two or more boiler-sorber/evaporator units
• CPC Class Codes: F28D 15/0266 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers F28D15/043 takes precedence
• CPC Class Codes: Y02A 30/27 Relating to heating, ventilation or air conditioning [HVAC] technologies
• CPC Class Codes: Y02B 30/62 Absorption based systems

Abstract

A rotary sorption heat pump for heating or cooling comprised of a plurality of sorption modules, each of which has at least two different zones of heat and mass transfer. The sorption modules are mounted to a frame which is adapted for rotation. Thermosyphons are used to transfer heat between different zones of sorption modules.

Claims

1. A rotary sorption heat pump for at least one of heating and cooling comprised of:

a) a plurality of sorption modules, each module comprised of at least two different zones of heat and mass transfer;

b) a mounting frame for said modules which is adapted for rotation;

c) a plurality of thermosyphons, each thermosyphon comprised of a first portion which is in heat exchange relationship with one type of zone in at least part of said modules, and at least a second portion which is in heat exchange relationship with a different type of zone in at least part of said modules;

2. The apparatus according to claim 1 wherein one zone contains a chemisorbent, and all modules contain the same working media pair.

3. The apparatus according to claim 1 wherein there are at least two different types of modules arranged in similar clusters, and wherein at least part of said thermosyphons exchange heat between at least two different modules.

4. The apparatus according to claim 3 adapted for concentration staged operation by exchanging latent heat between high affinity ends of respective modules.

5. The apparatus according to claim 3 adapted for pressure staged operation by exchanging latent heat from the low affinity end of one module to the high affinity end of a lower temperature module.

6. The apparatus according to claim 3 adapted for both pressure and concentration staging.

7. The apparatus according to claim 1 wherein at least part of said thermosyphons incorporate a reservoir.

8. The apparatus according to claim 1 wherein at least part of said thermosyphons are integrated with a condenser/evaporator end of at least part of said modules.

9. The apparatus according to claim 1 wherein at least part of said modules are trisorption modules.

10. The apparatus according to claim 3 additionally comprised of fixed structure for air being cooled, fixed structure for air being warmed, and wherein said modules are arranged so as to have the modules being cooled in close proximity and contiguous.

11. A multi-effect solid sorption heat pump comprised of:

a) at least two hermetically separate sorption modules which are adapted for operation in at least a two-step repeating sequence and wherein at least one of said modules is comprised of three different zones; and

b) a means for exchanging heat between different solids in at least two of said modules during one of said steps.

12. The multieffect solid sorption heat pump according to claim 11 additionally comprised of a multiplicity of clusters of said modules arranged on a rotating frame, a heat source, fixed heat transfer fluid conduits, and wherein said module-to-module heat exchange is via thermosyphon.

13. A solid sorption heat pump (SSHP) comprised of a plurality of clusters of multisorption modules, each cluster comprised of two different types of modules, one type of module in each cluster comprised of a sorbent zone plus a condenser/evaporator zone;

and the other comprised of two sorbent zones.

14. The SSHP according to claim 13, additionally comprised of a means for exchanging latent heat between at least one sorbent zone in each cluster and another zone, where the other zone can alternatively be in the same cluster or a different cluster, and can also alternatively be a sorbent zone or a condenser/evaporator zone.

15. The SSHP according to claim 14, wherein said means for heat exchange is comprised of thermosyphons.

16. The SSHP according to claim 14, wherein said means for heat exchange is comprised of a circulating heat transfer liquid.

17. The SSHP according to claim 15 additionally comprised of a rotatable frame for mounting said modules, whereby rotation causes said thermosyphons to turn on and off.

18. A rotary solid sorption heat pump (RSSHP) comprised of a plurality of clusters of multi sorption modules, each cluster comprised of at least two different modules.

19. The RSSHP according to claim 18, additionally comprised of a plurality of valveless non-reversing thermosyphons which are in heat exchange relationship with at least one of the sorbents contained in at least part of the multisorption modules.

20. The RSSHP according to claim 18, additionally comprised of sorbent containment zones of generally elongated cylindrical shape.

21. A rotary sorption heat pump for at least one of heating and cooling comprised of:

a) a plurality of sorption modules, each module comprised of at least two different zones of heat and mass transfer;

b) a mounting frame for said modules which is adapted for rotation;

c) a plurality of valveless thermosyphons, each thermosyphon comprised of a first portion which is in heat exchange relation with one type of zone in at least part of said modules, and a second portion which is in heat exchange relationship with an external heat transfer fluid.