EP0500020B1 - Système de production d'eau froide - Google Patents

Système de production d'eau froide Download PDF

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Publication number
EP0500020B1
EP0500020B1 EP19920102614 EP92102614A EP0500020B1 EP 0500020 B1 EP0500020 B1 EP 0500020B1 EP 19920102614 EP19920102614 EP 19920102614 EP 92102614 A EP92102614 A EP 92102614A EP 0500020 B1 EP0500020 B1 EP 0500020B1
Authority
EP
European Patent Office
Prior art keywords
container
water
ice
heat exchanger
cold
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.)
Expired - Lifetime
Application number
EP19920102614
Other languages
German (de)
English (en)
Other versions
EP0500020A1 (fr
Inventor
Ulrich Dipl.-Ing. Klüe
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0500020A1 publication Critical patent/EP0500020A1/fr
Application granted granted Critical
Publication of EP0500020B1 publication Critical patent/EP0500020B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/18—Storing ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine

Definitions

  • Cold water which has a temperature close to 0 ° C and is used, for example, to cool milk in dairies, can be generated directly by heat exchange with a chiller. If the cost difference between day and night electricity is considerable or the demand for cooling capacity fluctuates greatly, an arrangement is preferred in large systems, which is formed from a container for holding an ice-water mixture and a heat exchanger arranged above it, which is used at night or irrespective of the peak demand times, ice forms while the cold water is drawn off from the container, in which the peak demand for cooling capacity is satisfied by melting off the ice supply contained therein. Accordingly, the pipe connection for the removal of water (flow) is on the container.
  • the return connection can also be provided on the container, in the upper area of its ice-water storage part, where the returning, warmer water is cooled from the ice supply before it returns to the flow at the lower end of the ice-water storage part ( DE-A-2900372, Fig. 3).
  • This has the disadvantage that the returning warm water is not cooled when the ice supply has completely melted or is so small that it is limited to the height range of the container above the return connection. Then the warm, returning water can short-circuit reach the supply connection. This does not change significantly even if the heat exchanger is operated at the same time, since it is part of the principle of such systems that the cooling capacity of the heat exchanger is significantly lower than the peak capacity of the system.
  • the known system therefore has the disadvantage that, after the ice supply in the container has been used up, only relatively high-temperature water can be removed from the system for a relatively long time, although ice and cold water are already present therein.
  • the height of the ice-water supply in the container is limited to the order of magnitude of 1 to 3 m, so that a layer of warmer water, which is located approximately under the ice layer, soon occurs during the normal operation of the ice supply penetrating into deeper container areas is eliminated.
  • the invention is therefore based on the object of creating a system of the type mentioned at the outset, which offers the possibility of slim installation outdoors without any disadvantages in terms of the heat economy.
  • the solution lies in the combination of the features of claim 1.
  • the simple construction in which the container forms both the supporting structure and the casing of the heat exchanger, is only economical if the empty space enclosed by the container in the area of the heat exchanger is as small as held possible and thus the Horizontal dimensions of the container is also kept small.
  • the consequence of this is that the ice-water container is designed with a smaller horizontal dimension and a greater height than was previously the case.
  • the improvement in the thermodynamic conditions is achieved in that the flow connection is at the top, ie in that region of the container in which the coldest water layer is located even in the most unfavorable operating conditions. This ensures that the coldest possible water is supplied even if there is a warm layer of water in the bottom of the tank.
  • the vertical flow from bottom to top and the mixing of water layers is promoted in that the container is equipped with a mixing device in the form of a device for blowing air.
  • a mixing device in the form of a device for blowing air.
  • the ratio of the height to the diameter of the ice-water storage part of the container has a certain minimum size, if the container has no cylindrical cross-sectional shape, the diameter of the hydraulic diameter (4 x base / circumference) takes the place.
  • Cylindrical silo construction leads to a particularly favorable space requirement and a favorable material utilization with regard to the absorption of the heat exchanger weight.
  • the feature that so little empty space is to be enclosed by the container in the area of the heat exchanger is considered to be fulfilled according to the invention in the case of a cylindrical construction if the container diameter is approximately equal to the diagonal dimension of the heat exchanger (or the heat exchanger group) or is slightly larger (to about a factor of 1.5 or better 1.2).
  • the placement of the heat exchanger package, which is rectangular in horizontal section, in the cylindrical jacket means that there is sufficient space for maintenance work on the main sides of the heat exchanger.
  • the container does not require an upper closure, which at the same time should have sufficient strength to accommodate the weight of the heat exchanger. Instead, brackets for the heat exchanger are provided on the inside of the container walls which are raised above the height of the heat exchanger.
  • the cover only has to take weather aspects into account. Continuous thermal insulation of the walls is easier to achieve than when the container and heat exchanger are designed in separate units.
  • the silo-shaped container 2 rises on the foundation 1 with a height of, for example, 10 m and a diameter of its cylindrical side walls of, for example, approximately 4 m.
  • Its side walls 3 are made of a suitable material, for example stainless steel with a thermal barrier coating.
  • Its hood 4 is used only for weather and heat protection and therefore does not have any special static requirements.
  • the lower part of the container is intended for the storage of ice-water mixture up to the maximum fill height at 6 m indicated at 5, which is secured by a sensor (not shown) and possibly an overflow.
  • Suitable nozzle connections 6, 7 serve for the supply and removal of water. As indicated at 7 ⁇ , they can be protected from the removal of chunky ice by a perforated sheet weir. Since there is a height difference between the deeply arranged supply nozzle 6 (return) and the discharge nozzle 7 (flow) arranged near the surface of the ice-water supply, there is a vertical flow through the ice-water supply from bottom to top.
  • the heat exchanger 8 is provided, which is supported by the wall 3 via suitable brackets 9. It has a square shape, so that between its side surfaces and the wall 3 access spaces 10 are formed for maintenance purposes, which are accessible via a ladder 11, a stage 12 and a door opening 13, wherein a grating 14 can be provided to form a standing area.
  • the cylindrical silo construction combines a high intake volume with a small space requirement and little construction effort; because the load-bearing capacity of the cylindrical walls in relation to the heat exchanger weight is greater than that of other container shapes, especially if the container diameter is hardly larger than the diagonal dimension of the heat exchanger and the ratio of the maximum ice storage height 5 to the diameter is greater than 1 and in particular greater than 1 , 3 is.
  • the ratio of the total height to the diameter is expediently greater than 2. This is in contrast to Previously common large capacity ice storage arrangements when efforts were made to keep at least one horizontal dimension large and the vertical dimension small.
  • a mixing device provided in the ice storage part of the container, which is preferably formed by a device for the finely divided blowing of air near the bottom of the container.
  • a device for the finely divided blowing of air near the bottom of the container is indicated at 15, namely a pipe or several pipes with wall bores from which air emerges and bubbles upwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Claims (4)

  1. Installation de production d'eau froide comportant un récipient (2) pour recevoir un mélange de glace et d'eau, un échangeur de chaleur (8) disposé au-dessus de ce récipient et destiné à produire périodiquement de la glace, et des raccords de tuyaux (6, 7) respectivement pour l'arrivée et la sortie d'eau, l'échangeur de chaleur (8) étant porté par le récipient (2) et disposé dans la partie supérieure du récipient (2), et les raccords de tuyaux (6, 7) pour l'arrivée et la sortie d'eau étant verticalement distants sur le récipient (2), installation dans laquelle la partie de stockage de glace et d'eau du récipient (2) est haute d'au moins 4 m et présente un rapport de sa hauteur à son diamètre supérieur à 1, de préférence supérieur à 1,3, et dans laquelle le branchement aller est prévu dans la région supérieure et le branchement de retour dans la région inférieure de la partie de stockage de glace et d'eau.
  2. Installation de production d'eau froide selon la revendication 1, caractérisée en ce que le diamètre du récipient est approximativement égal ou légèrement supérieur à la dimension diagonale de l'échangeur de chaleur.
  3. Installation de production d'eau froide selon la revendication 1 ou 2, caractérisée en ce que le récipient (2) contient un dispositif mélangeur (15) sous la forme d'un dispositif d'insufflation d'air.
  4. Installation de production d'eau froide selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le récipient (2) est cylindrique.
EP19920102614 1991-02-21 1992-02-17 Système de production d'eau froide Expired - Lifetime EP0500020B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9102050 1991-02-21
DE9102050U 1991-02-21
DE9110982U DE9110982U1 (de) 1991-02-21 1991-09-04 Kaltwassererzeugungsanlage
DE9110982U 1991-09-04

Publications (2)

Publication Number Publication Date
EP0500020A1 EP0500020A1 (fr) 1992-08-26
EP0500020B1 true EP0500020B1 (fr) 1994-02-02

Family

ID=25957879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920102614 Expired - Lifetime EP0500020B1 (fr) 1991-02-21 1992-02-17 Système de production d'eau froide

Country Status (4)

Country Link
EP (1) EP0500020B1 (fr)
DE (3) DE9110982U1 (fr)
DK (1) DK0500020T3 (fr)
ES (1) ES2049553T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706982B1 (fr) * 1993-06-21 1995-08-04 Thermique Generale Vinicole
DE102010026648B4 (de) 2010-07-09 2015-12-31 Gea Grasso Gmbh Kälteanlage zur Kühlung eines Containers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE625499C (de) * 1932-11-28 1936-02-10 Daubron Ets Verfahren zur Kaeltespeicherung
DE668100C (de) * 1937-04-07 1938-11-25 Julius Pintsch Kom Ges Einrichtung zur Spericherung von kleinstueckigem Eis
US2212275A (en) * 1938-03-14 1940-08-20 Mojonnier Bros Co Apparatus for treating fluids
GB668001A (en) * 1949-04-27 1952-03-12 Sabroe & Co As Thomas Ths Method and apparatus for refrigeration by a circulating cooling medium
DE1501225A1 (de) * 1966-07-13 1969-10-30 Alfa Laval Bergedorfer Eisen Verfahren zur Kaeltespeicherung und Kuehlung von Fluessigkeiten
CH628417A5 (de) * 1978-01-06 1982-02-26 Laszlo Simon Anlage zum speichern von kontinuierlich erzeugter kaelte und zum stossweisen abgeben mindestens eines teils der gespeicherten kaelte.
NL7905277A (nl) * 1979-07-05 1981-01-07 Doomernik Bv Accumulator om warmte of koude op te slaan.
DK311883A (da) * 1983-07-06 1985-01-07 Vagn Hovgaard Villadsen Fremgangsmaade og anlaeg til opbygning af et islager til senere kuldeafgivelse til en ekstern koelekreds
LU86565A1 (fr) * 1986-08-29 1988-03-02 Hiross Int Co Dispositif de refroidissement de machines ou de milieux par circulation d'un fluide refrigere
US4829782A (en) * 1988-08-29 1989-05-16 Paul Mueller Company Ice harvesting/water chiller machine

Also Published As

Publication number Publication date
DK0500020T3 (da) 1994-05-30
DE9218174U1 (de) 1993-08-19
EP0500020A1 (fr) 1992-08-26
DE59200058D1 (de) 1994-03-17
DE9110982U1 (de) 1991-10-24
ES2049553T3 (es) 1994-04-16

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