EP0149288A1 - Verfahren und Vorrichtung für die Erzeugung von Leistung - Google Patents

Verfahren und Vorrichtung für die Erzeugung von Leistung Download PDF

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Publication number
EP0149288A1
EP0149288A1 EP84300202A EP84300202A EP0149288A1 EP 0149288 A1 EP0149288 A1 EP 0149288A1 EP 84300202 A EP84300202 A EP 84300202A EP 84300202 A EP84300202 A EP 84300202A EP 0149288 A1 EP0149288 A1 EP 0149288A1
Authority
EP
European Patent Office
Prior art keywords
vapor
fluid
turbine
nozzle
receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84300202A
Other languages
English (en)
French (fr)
Inventor
William E. Amend
Stephen J. Toner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IMO Industries Inc
Original Assignee
Transamerica DeLaval Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transamerica DeLaval Inc filed Critical Transamerica DeLaval Inc
Priority to EP84300202A priority Critical patent/EP0149288A1/de
Publication of EP0149288A1 publication Critical patent/EP0149288A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/005—Steam engine plants not otherwise provided for using mixtures of liquid and steam or evaporation of a liquid by expansion

Definitions

  • This invention relates generally to power production, and more particularly concerns use of a two-phase nozzle in a process employing a fluid exhibiting a regressive vapor dome in the temperature-entropy plane.
  • the invention involves the use of a two-phase nozzle in such a system, and includes the steps:
  • a fluid with a regressive vapor dome eliminates the above described problem, and as further shown in Fig. 2.
  • the fluid exiting the heat exchanger is in the liquid state. Expansion through a two-phase nozzle from state points 1 to 2 results in a high velocity pure vapor at the nozzle exit.
  • the working fluid is typically a hydrocarbon or a fluorocarbon, examples being DOWTHERM-A or certain freons and the two-phase nozzle facilitates production of a jet consisting substantially completely of superheated vapor, whereby turbine efficiency can be increased.
  • Overall turbine efficiency is enhanced by provision of both impulse and reaction turbine stages, as will be seen.
  • the present invention is fluid expansion power apparatus characterized by (a) a two-phase nozzle receiving a fluid in pressurized and heated liquid state, said fluid having a regressive vapor dome in a T-S diagram, and expanding said received liquid into saturated or superheated vapor state, and (b) means receiving said saturated or superheated vapor to convert the kinetic energy thereof into power.
  • a temperature-entropy curve 10 is shown for a fluid having a regressive vapor dome.
  • the line 10a defining the left side of the curve 10 corresponds to saturated liquid
  • the regressive line 10b defining the right side of the curve 10 corresponds to saturated vapor.
  • Some fluids may exhibit T-S curves such as shown at 10, and examples are the liquid mix known as DOWTHERM-A (a product of Dow Chemical Company, Midland, Michigan): certain fluorocarbons and other hydrocarbon liquid mixes.
  • Typical fluorocarbons are: R 114, R 216 and trifluoroethanol.
  • Fluids with regressive vapor domes as shown can be expanded from their saturated liquid state (line 10a) through the vapor dome into the superheat region (to line 10b, for example).
  • a two-phase nozzle 12 is employed as in Fig. 4 to carry out the expansion through the vapor dome, as referred to.
  • nozzles are those described in U.S. Patent 3,879,949.
  • Such expansion can take place at high efficiency (such as about 90%) to yeild a vapor jet at 12a with velocities of discharged vapor in the range of about 1000 feet per second.
  • Such jet velocities are not excessive, the latent heat of vaporization of such fluids typically being around 100 B/lbm, where:
  • the jet is passed to turbine means to convert the kinetic energy of the jet into power.
  • turbine means to convert the kinetic energy of the jet into power.
  • a power take-off shaft is indicated at 15, and may be used to drive a pump, generator, etc., indicated at 15a.
  • reaction vapor turbine 16 connected in series with turbine 13 to receive the vapor discharge 14, and discharge the reduced temperature vapor at 17. See point 3 in both Figs. 3 and 4. Both turbines are thereby driven, the power take-off for reaction vapor turbine 16 being indicated at 16a.
  • the vaporized and discharge fluid 17 is then passed at 18 to a condenser 19, the condensate 20 being re-pumped at 21 to a pressure p - equal to the pressure of liquid entering the nozzle 12.
  • the liquid Prior to passage to the nozzle, the liquid is heated in a heat exchanger 23 to initial temperature T 1 . Heat added to the liquid in exchanger 23 is indicated at QA Also, note corresponding points 3,4 and 5 in Figs. 3 and 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP84300202A 1984-01-13 1984-01-13 Verfahren und Vorrichtung für die Erzeugung von Leistung Withdrawn EP0149288A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP84300202A EP0149288A1 (de) 1984-01-13 1984-01-13 Verfahren und Vorrichtung für die Erzeugung von Leistung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84300202A EP0149288A1 (de) 1984-01-13 1984-01-13 Verfahren und Vorrichtung für die Erzeugung von Leistung

Publications (1)

Publication Number Publication Date
EP0149288A1 true EP0149288A1 (de) 1985-07-24

Family

ID=8192530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84300202A Withdrawn EP0149288A1 (de) 1984-01-13 1984-01-13 Verfahren und Vorrichtung für die Erzeugung von Leistung

Country Status (1)

Country Link
EP (1) EP0149288A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234734A (en) * 1962-06-25 1966-02-15 Monsanto Co Power generation
DE1551260A1 (de) * 1966-11-02 1970-03-19 Siemens Ag Verfahren zur Carnotisierung von Kreisprozessen fuer Dampfkraftanlagen und Anordnung zur Durchfuehrung des Verfahrens
US3879949A (en) * 1972-11-29 1975-04-29 Biphase Engines Inc Two-phase engine
US4086772A (en) * 1975-10-02 1978-05-02 Williams Kenneth A Method and apparatus for converting thermal energy to mechanical energy
DE3006286A1 (de) * 1980-02-01 1981-08-06 BBC AG Brown, Boveri & Cie., Baden, Aargau Ueberdruckdampfturbine mit einer gleichdruckregelstufe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234734A (en) * 1962-06-25 1966-02-15 Monsanto Co Power generation
DE1551260A1 (de) * 1966-11-02 1970-03-19 Siemens Ag Verfahren zur Carnotisierung von Kreisprozessen fuer Dampfkraftanlagen und Anordnung zur Durchfuehrung des Verfahrens
US3879949A (en) * 1972-11-29 1975-04-29 Biphase Engines Inc Two-phase engine
US4086772A (en) * 1975-10-02 1978-05-02 Williams Kenneth A Method and apparatus for converting thermal energy to mechanical energy
DE3006286A1 (de) * 1980-02-01 1981-08-06 BBC AG Brown, Boveri & Cie., Baden, Aargau Ueberdruckdampfturbine mit einer gleichdruckregelstufe

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19860113

17Q First examination report despatched

Effective date: 19861008

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870619

RIN1 Information on inventor provided before grant (corrected)

Inventor name: AMEND, WILLIAM E.

Inventor name: TONER, STEPHEN J.