US3608609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-exchanging method and apparatus
Assignee: Heinrich Koppers GmbH
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Filing: 1969-08-21
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Granted: 1971-09-28
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Expires: 1989-08-21
Abstract
Abstract Water is heated in a furnace at slight overpressure to saturation temperature and is thereupon discharged in a flash evaporator to form a vapor phase and a liquid phase. The gaseous phase is employed to heat one or more fluids in one or more first heat exchangers, and the liquid phase is used to heat one or more fluids in one or more second heat exchangers. Cooled liquid phase is pumped back into the furnace, together with the condensed vapor phase. The heating action in the furnace is regulated in dependency on the rate at which the vapor phase must be evacuated from the flash evaporator to maintain the pressure therein at exchangers. constant value, and the rate at which the liquid phase is caused to flow through the second heat exchanger or exchangers is a function of temperature in such heat exchangers.
Inventors
- 👤 Franz Trefny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:12
CPC Classifications
F; F28; F28F; F28F13/00; F28D; F28D19/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
20 words
A method as defined in claim 1, wherein said vapor phase is conveyed through a plurality of first heat-exchanging zones.
Claim 2
Dependent Claim
21 words
A method as defined in claim 1, wherein said liquid phase is conveyed through a plurality of second heat exchanging zones.
Claim 3
Dependent Claim
63 words
A method as defined in claim 1, wherein said step of conveying said first stream of condensate to said first-mentioned heating zone comprises subjecting said first stream of condensate to a pumping action and wherein said steps of conveying the liquid phase through the second heat exchanging zone and to said first-mentioned heating zone comprises subjecting the liquid phase to a pumping action.
Claim 4
Dependent Claim
76 words
A method as defined in claim 1, further comprising the steps of measuring the temperature of the liquid phase in said second heat-exchanging zone and regulating the rate at which the liquid phase is conveyed through said second heat-exchanging zone as a function of such temperature by increasing the liquid phase flow rate when the temperature falls below a given value and decreasing the liquid phase flow rate when the temperature rises above said given value.
Claim 5
Dependent Claim
258 words
Apparatus for effecting exchange of heat between a plurality of fluids and a heat carrier which is a liquid at normal temperature and pressure, comprising a first heating means for heating a stream of evaporable heat carrier as a liquid to a predetermined temperature at elevated pressure; flash evaporator means arranged to receive the thus heated liquid carrier from said heating means so that the carrier entering said evaporator means yields a vapor phase and a liquid phase; first conduit means passing from said evaporator means to and through a second heating means including at least one first heat exchanger wherein the vapor phase which leaves said evaporator means by way of said first conduit means indirectly exchanges heat with at least one first fluid and forms a first stream of condensate which is returned to said first heating means for reheating; second conduit means passing from said evaporator means to and through a third heating means including at least one second heat exchanger wherein the liquid phase which is evacuated from said evaporator means by way of said second conduit means indirectly exchanges heat with at least one second fluid whereupon the thus cooled liquid phase reenters said first heating means for reheating; variable delivery pump means in said second conduit means; and detecting and control means arranged to measure the temperature of the liquid phase in said second heat exchanger and to regulate the delivery of said pump means as a function of such temperature by decreasing the delivery rate with increasing temperature, and vice versa.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |