US4977753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for indirect-evaporative air cooling
Assignee: Individual
•
Filing: 1988-08-26
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Granted: 1990-12-18
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Expires: 2008-08-26
Abstract
Abstract The main air stream (1) in a room is cooled by passing it along the dry duct (3) and simultaneously passing the auxiliary air stream (7) that has been taken from the atmosphere in a countercurrent flow along the moist duct (9), which is in heat-exchange interaction with the dry duct (3). To provide more intensified cooling the auxiliary stream (7) is precooled in another dry duct (8), which is in heat-exchange interaction with another moist duct (6), by passing a part (5) of the precooled air taken up from the main stream (1), while a part (4) of air is returned to the room. The auxiliary stream (7) is flowing with the aid of an air exhauster (10).
Inventors
- 👤 Valery S. Maisotsenko
- 👤 Alexandr N. Gershuni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:35
CPC Classifications
F; F28; F28D; F28D5/00; F24; F24F; F24F1/00; F24F1/0007; F24F1/0041; F24F5/00; F24F5/0007; Y; Y02; Y02B; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A method for indirect-evaporative air cooling, consisting in that air is cooled by passing its main stream (1) along a dry duct (3) and simultaneously passing an auxiliary air stream (7) in a countercurrent flow along a moist duct (9), which is in heat-exchange interaction with said dry duct (3), characterized in that the auxiliary air stream (7) is precooled by being passed along another dry duct (8), which is in heat-exchange interaction with another moist duct (6) along which is passed countercurrently a part (5) of the precooled air taken up from the main stream (1), flowing of the auxiliary air stream (7) being effected by sucking it out of the moist duct (9).
Claim 2
Independent Claim
115 words
A method for indirect-evaporative air cooling, consisting in that air is cooled by passing its main stream (1) along a dry duct (3) and simultaneously passing an auxiliary air stream (7) in a countercurrent flow along a moist duct (9), which is in heat-exchange interaction with said dry duct (3), characterized in that the auxiliary air stream (7) is precooled by being passed along another dry duct (8), which is in heat-exchange interaction with another moist duct (6) along which is passed countercurrently a part (5) of the precooled air taken up from the main stream (1), flowing of the auxiliary air stream (7) being effected by sucking it out of the moist duct (9).
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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) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |