US4542628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupled dual loop absorption heat pump
Assignee: United States Department of Energy
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Filing: 1984-11-13
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Granted: 1985-09-24
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Expires: 2004-11-13
Abstract
Abstract A coupled dual loop absorption system which utilizes two separate complete loops. Each individual loop operates at three temperatures and two pressures. This low temperature loop absorber and condenser are thermally coupled to the high temperature loop evaporator, and the high temperature loop condenser and absorber are thermally coupled to the low temperature generator.
Inventors
- 👤 Paul H. Sarkisian
- 👤 Robert C. Reimann
- 👤 Wendell J. Biermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:51
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/006; F25B29/00; F25B29/006; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
An absorption heat pump/refrigeration system comprising: a first absorption system loop for operation within a first temperature range; a second absorption system loop for operation at a second lower temperature range relative to said first loop; said first loop having generator means, condenser means, evaporator means, and absorber means operatively connected together; said second absorption system having generator means, condenser means, evaporator means, and absorber means operatively connected together; and said first loop condenser means and said first loop absorber means in heat exchange relationship with said second loop generator means.
Claim 2
Dependent Claim
91 words
An absorption heat pump/refrigeration system comprising: a first absorption system loop for operation within a first temperature range; a second absorption system loop for operation at a second lower temperature range relative to said first loop; said first loop having generator means, condenser means, evaporator means, and absorber means operatively connected together; said second absorption system having generator means, condenser means, evaporator means, and absorber means operatively connected together; and said first loop condenser means and said first loop absorber means in heat exchange relationship with said second loop generator means.
Claim 3
Dependent Claim
27 words
The absorption heat pump/refrigeration system as recited in claim 1 wherein said second loop condenser means is in heat exchange relation with said first loop evaporator means.
Claim 4
Dependent Claim
27 words
The absorption heat pump/refrigeration system as recited in claim 2 wherein said second loop absorber means is in heat exchange relation with said first loop evaporator means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |