EP0322596A1 - Procédé et dispositif pour transporter un fluide prêt à bouillir - Google Patents

Procédé et dispositif pour transporter un fluide prêt à bouillir Download PDF

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Publication number
EP0322596A1
EP0322596A1 EP88120195A EP88120195A EP0322596A1 EP 0322596 A1 EP0322596 A1 EP 0322596A1 EP 88120195 A EP88120195 A EP 88120195A EP 88120195 A EP88120195 A EP 88120195A EP 0322596 A1 EP0322596 A1 EP 0322596A1
Authority
EP
European Patent Office
Prior art keywords
pressure
heat
container
boiling
liquid
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.)
Granted
Application number
EP88120195A
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German (de)
English (en)
Other versions
EP0322596B1 (fr
Inventor
Dirk Ohrt
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.)
Rendamax BV
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Rendamax BV
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Filing date
Publication date
Application filed by Rendamax BV filed Critical Rendamax BV
Publication of EP0322596A1 publication Critical patent/EP0322596A1/fr
Application granted granted Critical
Publication of EP0322596B1 publication Critical patent/EP0322596B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/24—Pumping by heat expansion of pumped fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/02—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped using both positively and negatively pressurised fluid medium, e.g. alternating
    • F04F1/04—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped using both positively and negatively pressurised fluid medium, e.g. alternating generated by vaporising and condensing

Definitions

  • the invention relates to a method and a device for the conveyance of boiling liquids, in which the required delivery pressure is generated by changing the boiling pressure of a boiling liquid from a low starting point to a boiling pressure increased by the desired pressure increase by external heat supply and then the initial state is restored by lowering the pressure to the low boiling pressure with external heat dissipation, the boiling liquid being subjected to a cyclical process in the wet steam region which results from pressure reduction by heat dissipation, compression during heat dissipation at a low temperature level, pressure increase by heat supply, and one Expansion by supplying heat at a high temperature level exists, in particular in a sorption system (absorption chiller, heat pump or heat transformer and absorption chiller, heat pump or heat transformer).
  • the solution pump of a sorption plant presents considerable structural difficulties, although the performance for this component is comparatively low.
  • the pressure difference to be bridged depends on the pair of materials used, consisting of refrigerant and solvent.
  • a frequently used pair of substances is NH3 / H2O, at which pressure differences of 20 bar and more can occur.
  • the problems that occur which are similar for many other material pairs, are poor efficiency and cavitation problems, as well as the penetration of often environmentally harmful or toxic cold medium.
  • the costs for this component in particular in the case of large cooling or heating capacities, can also be disproportionately high compared to the costs of the entire system.
  • a method for operating absorption heat pumps has become known, in which a solution pump designed as a diaphragm pump with a thermal drive part is used to save electrical energy, which consists of a closed container filled with a two-substance mixture of ammonia and water, in which a Temperature changer operated periodically with cold steam from the evaporator and warm medium from the heat pump circuit is arranged.
  • the invention is therefore based on the object of providing a method and a device of the type mentioned, in which no highly stressed wear parts, in particular no membranes, are required, and in which a faster and more economical method of operation than in known devices of this type can be achieved.
  • Also provided in accordance with the invention is a device for conveying boiling liquids, in particular for carrying out the described method, which has a container provided with a lockable inflow and outflow, in the lower region of which a lower temperature than in the upper region, with means present are to move the boundary layer of liquid and vapor in zones of different temperature.
  • Figures 1-4 of the drawing show a device for carrying out the invention in four different operating states.
  • the device consists of a container 1, which encloses a working space 2, into which a displacer 3 is fitted such that a narrow cylinder gap 4 remains between the wall of the container 1 and the displacer 3.
  • the displacer 3 experiences an oscillating translational movement within the working space 2 via a drive 5.
  • the walls 6 as well as the bottom 7 and cover 8 of the container are designed in a suitable manner, for example double-walled and divided, in such a way that they can take over the function of separate heat exchangers, if you are from media corresponding tem flow through temperature.
  • the wall temperature of the container 1 increases in the axial direction towards the head.
  • the walls are, for example, divided several times and fluids of different temperatures flow through them, so that a "cold zone” forms in the lower part of the container 1 and a “hot zone” in the head of the container 1.
  • the wall part 9 between the cover 8 and the bottom 7 is designed on the one hand in a suitable manner as a regenerative heat exchanger, so that a temperature gradient is established in the cylinder axis direction, and on the other hand the cavity of the wall part 9 is flowed through by the liquid conveyed to high pressure after a completed working cycle for a subsequent heat exchange .
  • In the lower part of the container 1 there are an inlet opening 10 to the low-pressure part of a sorption system (not shown) and an outlet opening 11 to the high-pressure part of the sorption system, both openings being provided with a check valve 12 and 13, respectively.
  • a liquid level forms within the cylinder gap 4 between the wall of the container 1 and the displacer 3, which can be regarded as the phase boundary between the vapor space located above and the liquid space located underneath, as follows will be described - always a residual mass of liquid and vapor phase remains in the system. Due to the temperature stratification in the container wall with each change in the liquid level in the narrow cylinder gap 4 between the container 1 and the displacer 3 a heat supply. removal, thus a change in temperature at the phase separation layer. The temperature of this separating layer, at which ideally there is a constant phase equilibrium, is the sole determinant of the pressure in the entire container 1, a certain container pressure being associated approximately with a discrete water level. If the level of the phase boundary is shifted by a movement of the displacer 3, the tank pressure is changed in the same way.
  • the device has the task of conveying the refrigerant-enriched solution emerging from the absorber from the low absorber pressure (e.g. 4 bar) to the generator at high pressure (e.g. 20 bar).
  • the pressure of the liquid, but not its temperature, should be increased in order to keep the energy consumption as low as possible.
  • the mixture of steam and liquid remaining in the system is subcooled in the cold zone in comparison to the entry temperature of this solution by cooling the container bottom 7 with e.g. is branched off in front of the absorber and is therefore colder than the solution under consideration, so that a relative negative pressure (e.g. 3.8 bar) to the absorber is established in container 1, as a result of which the check valve 12 in the inlet opening 10 opens.
  • a relative overpressure to the generator must be created in the container 1 (e.g. 20.2 bar) so that the check valve 13 in the outlet opening 11 opens. This is done by internal heat exchange by flowing a liquid through the hot lid 8 of the container 1, the temperature of which is higher than the equilibrium temperature of the refrigerant at this pressure, for example the degassed solution after the generator exits.
  • the changes in the state of the cycle for the system under consideration are explained below with reference to FIGS. 1 to 4.
  • Fig. 1 according to state (1), the displacer 3 is shown in the bottom dead center.
  • the vapor volume in the head of the container 1 represents the control volume, which in the fol goes through a cycle.
  • the phase separation mirror is in the hot zone; thus there is a relative excess pressure in the container 1, the lid 8 of which is heated with an in-process liquid of a suitable temperature, in comparison with the generator of the sorption system, so that the check valve 13 in the outlet channel 11 is open.
  • the displacer 3 is now moved upwards, the phase separation layer moves between the liquid remaining in the working space and the associated vapor phase in the direction of lower temperatures. Since both check valves 11, 12 are closed when the state changes from (1) to (2), this runs isochorically.
  • a part of the control volume, which was vaporous in the state (1) is liquefied during this change of state and gives off the amount of heat q 1 to the container wall, which is stored by it.
  • the check valve 13 in the outlet opening 11 opens, and the solution is displaced from the lower part of the container 1 into the generator by a further downward movement of the displacer 3 while maintaining the high pressure.
  • the heat q14 must be supplied in the hot lid 8 from the solution flowing through the hot head, whereby further condensate can evaporate again from the control volume.
  • the energy expenditure for operating the device described with ideal process control consists of the supply of the specific amount of heat q41 and from the comparatively minor volume change work P23, which the liquid flowing into the container 1 at the control volume.
  • the process provides the volume change work P41 on the displaced liquid and the heat q23, which is given as useful heat to the consumer-side heat transfer medium in the example discussed here, and the difference in heat flows q12 - q34.
  • the additional expenditure of high-temperature heat, which must also be generated in the generator of a heat pump with primary energy, is: Q to q41 - (
  • the volume change work P Nutz can be generated. Furthermore, the heat is q23 at the useful temperature level.
  • a hydraulic displacement unit 20 can also be used for the movement of the displacement body 3, which uses the pressure energy of the liquid transport or solvent.
  • an electromagnetic drive 30 is shown for the periodic up and down movement of the displacer 3, which can be arranged within the displacer 3, whereby the particular advantage is achieved that the working space 2 is completely closed, so that an undesirable leakage of Liquid is prevented even more safely.
  • the invention offers the advantage of an operationally reliable mode of operation since highly stressed wear parts, in particular no membranes, are required.
  • the device according to the invention also has the advantage of particularly fast and economical operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Meat, Egg Or Seafood Products (AREA)
EP88120195A 1987-12-30 1988-12-03 Procédé et dispositif pour transporter un fluide prêt à bouillir Expired - Lifetime EP0322596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3744487 1987-12-30
DE19873744487 DE3744487A1 (de) 1987-12-30 1987-12-30 Verfahren und vorrichtung zur foerderung von siedefaehigen fluessigkeiten

Publications (2)

Publication Number Publication Date
EP0322596A1 true EP0322596A1 (fr) 1989-07-05
EP0322596B1 EP0322596B1 (fr) 1992-04-08

Family

ID=6343823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120195A Expired - Lifetime EP0322596B1 (fr) 1987-12-30 1988-12-03 Procédé et dispositif pour transporter un fluide prêt à bouillir

Country Status (5)

Country Link
US (1) US4954048A (fr)
EP (1) EP0322596B1 (fr)
JP (1) JPH01262376A (fr)
DE (2) DE3744487A1 (fr)
NO (1) NO168726C (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4987954A (en) * 1988-11-28 1991-01-29 Boucher Robert J Fuel reactor
US6123512A (en) * 1997-08-08 2000-09-26 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Heat driven pulse pump
RU2189497C2 (ru) * 2000-03-20 2002-09-20 Крайнюк Александр Иванович Компрессор теплового сжатия
RU2183766C1 (ru) * 2001-01-23 2002-06-20 Военный инженерно-технический университет Термокомпрессор
RU2183767C1 (ru) * 2001-01-23 2002-06-20 Военный инженерно-технический университет Тепловой компрессор
RU2184269C1 (ru) * 2001-02-05 2002-06-27 Военный инженерно-технический университет Теплоиспользующий компрессор
RU2230223C1 (ru) * 2003-01-27 2004-06-10 Военный инженерно-технический университет Тепловой компрессор
RU2230224C1 (ru) * 2003-01-27 2004-06-10 Военный инженерно-технический университет Тепловой компрессор
RU2230225C1 (ru) * 2003-01-27 2004-06-10 Военный инженерно-технический университет Тепловой компрессор
RU2480623C1 (ru) * 2012-03-22 2013-04-27 Александр Дмитриевич Савчук Теплоиспользующий компрессор
PL240516B1 (pl) * 2018-01-09 2022-04-19 Dobrianski Jurij Maszyna parowa
DE102019129495B3 (de) * 2019-10-31 2021-04-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verdichteranordnung, Wärmepumpenanordnung und Verfahren zum Betreiben der Verdichteranordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853953A (en) * 1952-05-07 1958-09-30 Zander & Ingestroem Liquid pumps
GB2019486A (en) * 1978-03-07 1979-10-31 Atomic Energy Authority Uk Pumps
US4281969A (en) * 1979-06-25 1981-08-04 Doub Ernest L Jun Thermal pumping device
EP0048139A1 (fr) * 1980-09-16 1982-03-24 The Calor Group Limited Dispositif de pompage
DE3331887A1 (de) * 1983-09-03 1985-03-21 VEB Wärmeanlagenbau Deutsche Demokratische Republik, DDR 1020 Berlin Absorptionswaermepumpe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR429602A (fr) * 1911-05-08 1911-09-27 Joseph Maurer Appareil à refouler les liquides sous pression
DE1048152B (de) * 1956-06-21 1958-12-31 Austria Email Ag Vorrichtung zum intermittierenden Foerdern von Fluessigkeiten
US3285001A (en) * 1965-03-04 1966-11-15 Conductron Corp Thermal fluid moving apparatus
FR2357762A1 (fr) * 1976-07-06 1978-02-03 Lemasson Yves Procede de pompage de l'eau par l'energie solaire
GB2015654A (en) * 1978-03-06 1979-09-12 Alsacienne & Dauphinoise A water pumping device using a condensable gas source of energy
DD219060A3 (de) * 1983-07-11 1985-02-20 Dsf Waermeanlagenbau Absorptionswaermepumpe
DE3344937A1 (de) * 1983-12-13 1985-06-20 Achim Dr.-Ing. 6636 Hülzweiler Wilhelm Verfahren und vorrichtung zum foerdern von wasser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853953A (en) * 1952-05-07 1958-09-30 Zander & Ingestroem Liquid pumps
GB2019486A (en) * 1978-03-07 1979-10-31 Atomic Energy Authority Uk Pumps
US4281969A (en) * 1979-06-25 1981-08-04 Doub Ernest L Jun Thermal pumping device
EP0048139A1 (fr) * 1980-09-16 1982-03-24 The Calor Group Limited Dispositif de pompage
DE3331887A1 (de) * 1983-09-03 1985-03-21 VEB Wärmeanlagenbau Deutsche Demokratische Republik, DDR 1020 Berlin Absorptionswaermepumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES, Nr. 6, November/Dezember 1968, Seiten 1476-1477, New York, US; S.S. BOKSHA: "Device for thermal compression of liquids" *

Also Published As

Publication number Publication date
JPH01262376A (ja) 1989-10-19
NO885409D0 (no) 1988-12-06
NO168726B (no) 1991-12-16
EP0322596B1 (fr) 1992-04-08
US4954048A (en) 1990-09-04
NO168726C (no) 1992-03-25
NO885409L (no) 1989-07-03
DE3869931D1 (de) 1992-05-14
DE3744487A1 (de) 1989-07-13

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