Variable vapor pressure absorption refrigeration systems
Abstract
Abstract A HEATING AND COOLING SYSTEM EMPLOYING A TWO-STAGE ADIABATIC EVAPORATOR AND A TWO-STAGE ABSORBER HAVING A COUNTER-FLOW RELATIONSHIP WITH THE EVAPORATOR. A VAPOR PRESSURE CONTROL PASSAGE IS PROVIDED WHICH DILUTES THE REFRIGERANT PASSING TO THE EVAPORATOR WITH ABSORBENT SOLUTION TO LOWER THE VAPOR PRESSURE OF THE REFRIGERANT UPON A DROP IN AMBIENT ABSORBER TEMPERATURE. THE VAPOR PRESSURE CONTROL PASSAGE ALSO PASSES DILUTED REFRIGERANT TO A WEAK SOLUTION PASSAGE WHERE IT MIXES WITH WEAK SOLUTION TO THE GENERATOR, RESULTING IN AN INCREASE IN THE CONCENTRATION AND VAPOR PRESSURE OF THE REFRIGERANT IN THE EVAPORATOR UPON A RISE IN AMBIENT ABSORBER TEMPERATURE. HEATING PASSAGE MEANS IS PROVIDED TO MIX ABSORBENT SOLUTION AND REFRIGERANT, WHICH IS HEATED IN A GENERATOR TO SUPPLY HEATING AT A DESIRED LOCATION.
Inventors
- 👤 Louis H Leonard Jr
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |