EP1010001A1 - Procede et dispositif de mise en evidence d'une concentration d'un melange de glace fluide - Google Patents

Procede et dispositif de mise en evidence d'une concentration d'un melange de glace fluide

Info

Publication number
EP1010001A1
EP1010001A1 EP98952514A EP98952514A EP1010001A1 EP 1010001 A1 EP1010001 A1 EP 1010001A1 EP 98952514 A EP98952514 A EP 98952514A EP 98952514 A EP98952514 A EP 98952514A EP 1010001 A1 EP1010001 A1 EP 1010001A1
Authority
EP
European Patent Office
Prior art keywords
ice
fluid
heat exchanger
concentration
binary
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Withdrawn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
EP98952514A
Other languages
German (de)
English (en)
Inventor
Joachim Paul
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.)
Integral International GmbH
Original Assignee
Integral International GmbH
Integral Energietechnik GmbH
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 Integral International GmbH, Integral Energietechnik GmbH filed Critical Integral International GmbH
Publication of EP1010001A1 publication Critical patent/EP1010001A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means

Definitions

  • the invention relates to a method and a device for determining the concentration of a liquid ice mixture.
  • Liquid ice mixtures consist of suspensions or mixtures of ice crystals or pieces of ice in liquid (hereinafter referred to as "binary ice fluid"). Such two-phase fluids are used for cold transport, cold storage and cold use. With these fluids, it is important to have a precise knowledge of the ice concentration in order to maintain and / or determine all process parameters in the plants in which these liquid ice mixtures are used. The exact determination of the ice concentration in a binary ice fluid is difficult. The determination of the ice concentration by measuring the electrical conductivity, as is known from DE 43 25 793 C2, is not very precise and cannot be applied to any liquid. Viscosity measurements are difficult - if at all - to be carried out. The pressure drop over a specified distance is also not a suitable signal, since the viscosity of the liquid is based on the temperature, quantity and quality of additives.
  • the reason for using a binary ice fluid is the latent energy (enthalpy of fusion) of the ice contained in the fluid. This enables the reduction of pipe cross sections, the reduction of pump energy, the reduction of energy storage and the reduction of heat exchanger surfaces.
  • the latent energy of binary ice cannot be determined with temperature sensors, since the temperature of the binary ice in the melting area does not (or hardly changes). A different type of ice concentration determination is therefore necessary.
  • ice concentration of binary ice is determined according to the "calorimetric" method.
  • a volume of the binary ice is weighed and its temperature is determined.
  • a second volume of sufficiently warm fluids is weighed and its temperature is determined. Then you mix both volumes and can use the mixing temperature to calculate the ice concentration if the mixture no longer contains ice.
  • the object of the invention is to provide a method and a device for determining the concentration of a liquid ice, which is attached to a pipeline and can determine the concentration at least at short intervals. According to the invention, this is achieved by a method with the features of claim 1 or 2 and by a device with the features of claim 3.
  • the proposed method and the suitable device allow the ice concentration to be determined automatically, continuously or discontinuously. It is possible to determine the ice concentration of binary ice in storage tanks and pipelines.
  • a method for determining the ice concentration in a binary ice fluid in which a partial stream is first coupled out of the flow to be measured or the storage volume, and this outcoupling stream is introduced into a heat exchanger while measuring the inlet and outlet temperatures, where heating of the Fluid flow and a further return to the heat exchanger when again measuring the inlet and outlet temperatures of the return flow, the ice concentration is determined mathematically.
  • Fig. 1 shows the cal atic structure of a device for ice concentration determination on a pipe
  • Fig. 2 shows the arrangement of the device of Fig. 1 on a storage container.
  • the pipeline 10 shown in FIG. 1 is provided with a device 12 for withdrawing a partial stream which discharges it into a pipeline 14.
  • a temperature sensor 15 on the pipe 14 measures the temperature of the binary ice.
  • the binary ice is then melted in a heat exchanger 16, the heat transferred in the heat exchanger 16 having to be large enough to completely melt the ice.
  • Another temperature sensor 20 is provided on the pipeline at the outlet from the heat exchanger.
  • the fluid then enters a second heat exchanger 22 in which it is further heated by an external heat source.
  • This heat source can e.g. B., as shown in Fig. 1, be a further water cycle in which heated water enters (reference numeral 24) and exits again heated (reference numeral 26).
  • the outcoupled partial flow is thereby warmed up from a temperature measured by the temperature sensor 20 to a higher temperature, which is measured by a further temperature sensor 28 before it re-enters the heat exchanger 16.
  • the fluid in turn loses heat in the heat exchanger and exits at a lower temperature at a location 30.
  • the outcoupled partial flow can now be returned to the main flow via a device 32 and mixed with the binary ice.
  • the heated binary ice fluid is cooled in the heat exchanger 16, the binary ice ice flowing in the opposite direction being fluid melts (or warms), ie the enthalpy difference of the binary ice fluid flows between points A and B and C and D are the same, although different from the sign.
  • the ice concentration is calculated using the following equation:
  • x E (tc - t D - t B + t A ) • (cp fluid / h ice )
  • a discontinuous measurement can be used if a continuous measurement would disturb the energy balance too much.
  • the heat exchanger 22 can be heated both by heated fluid (for example water, possibly cooling water of the condenser of the refrigerator) or also electrically.
  • heated fluid for example water, possibly cooling water of the condenser of the refrigerator

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de mise en évidence d'une concentration d'un mélange de glace fluide (glace fluide binaire), comprenant les étapes suivantes: découplage d'un courant partiel du fluide, qui est ensuite introduit et réchauffé dans un échangeur de chaleur (16) jusqu'à fusion complète, avec mesure de la température d'admission (tA) et de la température de sortie (tB); poursuite du réchauffement du courant fluide par une source de chaleur extérieure et renvoi du courant partiel à travers l'échangeur de chaleur (16) avec, à nouveau, mesure de la température d'admission t?C? et de la température de sortie (tD); et calcul de la concentration de gaz selon l'équation Xglace = (tC - tD - tB + tA) x (cpfluide / hglace), où cpfluide est la capacité calorifique et hglace est l'enthalpie de fusion de la glace binaire.
EP98952514A 1997-08-30 1998-08-27 Procede et dispositif de mise en evidence d'une concentration d'un melange de glace fluide Withdrawn EP1010001A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19737983 1997-08-30
DE19737983A DE19737983C2 (de) 1997-08-30 1997-08-30 Verfahren und Vorrichtung zur Bestimmung der Konzentration eines Flüssigeisgemisches
PCT/DE1998/002522 WO1999012023A1 (fr) 1997-08-30 1998-08-27 Procede et dispositif de mise en evidence d'une concentration d'un melange de glace fluide

Publications (1)

Publication Number Publication Date
EP1010001A1 true EP1010001A1 (fr) 2000-06-21

Family

ID=7840737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98952514A Withdrawn EP1010001A1 (fr) 1997-08-30 1998-08-27 Procede et dispositif de mise en evidence d'une concentration d'un melange de glace fluide

Country Status (8)

Country Link
US (1) US6190036B1 (fr)
EP (1) EP1010001A1 (fr)
JP (1) JP2001515207A (fr)
KR (1) KR20010023378A (fr)
CA (1) CA2302318A1 (fr)
DE (1) DE19737983C2 (fr)
WO (1) WO1999012023A1 (fr)
ZA (1) ZA987740B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948908C2 (de) * 1999-10-11 2001-10-04 Siemens Ag Verfahren zur Bestimmung der Alkoholkonzentration in Brennstoffzellen sowie ein zu dessen Durchführung geeignetes Brennstoffzellensystem
DE10210991A1 (de) * 2002-03-13 2003-10-16 Joachim Paul Wintersporthalle und Verfahren zu deren Betreiben
CN100439906C (zh) * 2004-03-19 2008-12-03 中国科学院理化技术研究所 基于流体流动换热的圆柱型量热仪
US20080285616A1 (en) * 2006-12-22 2008-11-20 Espec Corp. System for testing the durability of objects under thermally hard circumstances
RU2720399C1 (ru) * 2019-09-26 2020-04-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Юго-Западный государственный университет" (ЮЗГУ) Способ измерения параметров фазового перехода жидкость-жидкость

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221541A (en) * 1961-12-20 1965-12-07 Entroputers Inc Method of and apparatus for accurately and instantaneously determining the ratio of the constituents of a vapor-liquid-solid mixture or a mixture of any two of the components thereof
SE329025B (fr) * 1968-03-20 1970-09-28 Lkb Produkter Ab
DE2811945C3 (de) * 1978-03-18 1982-01-14 Kali-Chemie Ag, 3000 Hannover Analysengerät
JPH0466854A (ja) * 1990-07-06 1992-03-03 Takenaka Komuten Co Ltd 氷含有流体供給システムにおける氷含有率測定方法およびそれに用いる装置
JPH04357446A (ja) * 1991-03-01 1992-12-10 Daikin Ind Ltd 氷蓄熱装置に用いる製氷量測定方法および測定装置
JPH04366731A (ja) * 1991-06-14 1992-12-18 Mitsubishi Electric Corp 氷蓄熱槽のレベル検出装置
US5386718A (en) * 1992-06-02 1995-02-07 Marathon Oil Company Method for fluid analysis
DE4325793C2 (de) * 1993-07-31 1997-07-17 Integral Technologie Gmbh Verfahren zur Messung einer Eiskonzentration und Vorrichtung zur Durchführung des Verfahrens
DE4325794C1 (de) * 1993-07-31 1994-10-06 Integral Technologie Gmbh Verfahren zur Eiskonzentrationsmessung
US5980102A (en) * 1994-06-20 1999-11-09 Columbia Gas Of Ohio Method for measuring physical characteristics in a pipeline without tapping

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9912023A1 *

Also Published As

Publication number Publication date
ZA987740B (en) 1999-01-19
WO1999012023A1 (fr) 1999-03-11
US6190036B1 (en) 2001-02-20
KR20010023378A (ko) 2001-03-26
DE19737983A1 (de) 1999-03-11
JP2001515207A (ja) 2001-09-18
DE19737983C2 (de) 1999-08-12
CA2302318A1 (fr) 1999-03-11

Similar Documents

Publication Publication Date Title
DE69033440T2 (de) Mischen oder Homogenisieren einer Flüssigkeit mit einem Gas und Messen des Durchflusses der Mischung
EP0254160B1 (fr) Dispositif pour mesurer le débit massique dans un tube
DE69118686T2 (de) Verbesserte zwei- und dreiphasenströmungsmessung
DE60010774T2 (de) Verfahren und Einrichtung zur Bestimmung eines zweiphasigen Durchflusses
DE2812715A1 (de) Verfahren und vorrichtung fuer die bestimmung der volumendurchsaetze jeder phase in einer zweiphasigen mischung
EP0615112A1 (fr) Procédé pour la détermination du rendement des puits de pétrole ou d'eau et séparateur d'essais pour la mise en oeuvre de ce procédé
EP1010001A1 (fr) Procede et dispositif de mise en evidence d'une concentration d'un melange de glace fluide
WO1984002003A1 (fr) Procede et dispositif pour determiner si l'on a atteint ou depasse une valeur-limite exprimee en pourcentage d'une partie de liquide contenue dans un melange liquide et ayant une temperature d'evaporation inferieure
DE2349404C3 (de) Vorrichtung zur quantitativen Analyse
DE3917935C2 (fr)
DE102010000755B4 (de) Anordnung zur Messung der Viskosität einer gleichmäßig temperierten Flüssigkeit
DE3444383C2 (fr)
DE69308483T2 (de) Leitfähigkeitsmesswertaufnehmer
DE2811945A1 (de) Analysenverfahren, geraet zu seiner durchfuehrung und anwendung des verfahrens und geraetes
DE3820196C2 (fr)
DE102015205202B4 (de) Verfahren zum Messen einer magnetischen Eigenschaft von magnetischen Nanopartikeln
DE2029337C2 (de) Verfahren zur Messung von Verweilzeitspektrum und Summenkurve bei der kontinuierlichen Verarbeitung von rheologischen Medien, insbesondere Kunststoffschmelzen, und Schneckenstrangpresse zur Durchführung des Verfahrens
DE3414866A1 (de) Verfahren und vorrichtung zum messen der osmolaritaet von fluessigkeitsproben
DE3342440C2 (fr)
DE1287332B (de) Verfahren und Vorrichtungen zur Messung hoher Temperaturen fluessiger oder gasfoermiger Medien
DE2104869C3 (de) Verfahren und Vorrichtung zur Herstellung von Mischungskonzentrationen definierter Endwerte aus zwei flüssigen Komponenten von bekannter Anfangskonzentration
CH225192A (de) Verfahren und Einrichtung zur Mengenmessung mittels des Stromes eines Fluidums.
DE3413634C1 (de) Einrichtung zur Eichung einer Meßvorrichtung zur Erfassung von Ölspuren in Wasser
EP0102409B1 (fr) Méthode et dispositif d'examen du point d'ébullition des liquides hygroscopiques
DE4416203C2 (de) Einrichtung zum Bestimmen von Schadstoffen in einem flüssigen Brennstoff

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

17P Request for examination filed

Effective date: 19990818

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES FR GB GR NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: INTEGRAL INTERNATIONAL GMBH

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: 20070301