WO1979000068A1 - Echangeur de chaleur, notamment pour refroidir l'eau lors de l'obtention d'eau douce par distillation de l'eau de mer - Google Patents

Echangeur de chaleur, notamment pour refroidir l'eau lors de l'obtention d'eau douce par distillation de l'eau de mer Download PDF

Info

Publication number
WO1979000068A1
WO1979000068A1 PCT/SE1978/000021 SE7800021W WO7900068A1 WO 1979000068 A1 WO1979000068 A1 WO 1979000068A1 SE 7800021 W SE7800021 W SE 7800021W WO 7900068 A1 WO7900068 A1 WO 7900068A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
flow
flow elements
heat exchanger
elements
Prior art date
Application number
PCT/SE1978/000021
Other languages
English (en)
Inventor
O Elmqvist
Original Assignee
O Elmqvist
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 O Elmqvist filed Critical O Elmqvist
Priority to DE19782856960 priority Critical patent/DE2856960A1/de
Priority to BR7808671A priority patent/BR7808671A/pt
Publication of WO1979000068A1 publication Critical patent/WO1979000068A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/043—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other

Definitions

  • Heat exchanger especially for cooling water at fresh water recovery by distillation of sea water .
  • This invention relates to a heat exchanger, which is intended especial- ly for use at the cooling of water in connection with the recovery of fresh water by distillation of sea water .
  • SE-PS 387 927 which a. o. shows an evaporation chamber comprising a plurality of flow elements, which substantially are of plane parallel and vertical rela- tionship. According to the process disclosed in said patent specifica ⁇ tion, cooled fresh water is to be fed into the evaporation chamber .
  • One object of the present invention is to bring about a heat exchanger with flow elements adapted for use at the cooling of fresh water prior to its feed into the evaporation chamber.
  • a further object of the invention is to render it pos sible to recover desalted sea water at such a price that such recovery really is econo ⁇ mic for being applied to normal agricultural irrigation in areas having no fresh water resources of their own.
  • the invention is based on the idea of being able with very low overpres sures to utilize the immense low temperature resources, which are available in sea water and easily can be transferred by pumping to places of demand.
  • the small temperature gradients here involved and to be utilized require large surfaces . This requirement is not met by conventional heat ex ⁇ changer s .
  • Conventional heat exchangers are made of metallic material in order to utilize the good heat transfer coefficient of these materials. Due to the aforesaid requirement of large surfaces at fresh water production, these heat exchanger s are unreasonably expensive .
  • Another restric ⁇ ting factor is the requirement of corrosion resistance of the material used in the heat exchanger s in view of the sea water effect.
  • Fig. 1 is a front view of a flow element comprised in a heat exchang according to the invention
  • Fig. 2 is a lateral view of the flow element
  • Fig. 3 is a front view of a clamping element comprised in the flow element
  • Fig. 4 is ' a lateral view of said clamping element
  • Fig. 5 shows an inlet (or outlet) in the flow element with laid-in clamping element
  • Fig. 6 is a lateral view of the heat exchanger
  • Fig. 7 is a view from above of the heat exchanger .
  • the flow element according to Figs . 1 -2 consists of two thin foils 10 and 20, which in longitudinal direction of the flow element are so jointed by intermittent welding in several places in transver se direct ion, that the flow element is formed with a plurality of longitudinal gaps for water transport.
  • three such gaps are indicated to the left and one to the right by the reference numerals 1 1 , 12 , 13, 14.
  • the term intermittent welding is to be understood so that the joints welded are discontinuous .
  • a welding joint is designated by 15, and a distance between two j oints is designated by 16. It is pos sible in principle to weld continuous joints, but with discontinuous joints a certain turbulence of the water flow is obtained.
  • the flow element is connected at its upper end to two inlets 17, and at its lower end to tw outlets 18. Between said inlets 17 a clamping element 21 -22 is pro ⁇ vided, in such a manner, that the ends of the clamping element are secured in the inlets 17, and the foils 10, 20 are so laid about the clamping element, that the clamping element is located between the foils .
  • the clamping element appears more clearly from Figs . 3 -4. It has the configuration of a T with an arc- shaped roof 21 and a straight remaining portion 22. The way how the clamping element is secured in an inlet 17 and, respectively, outlet 18 is more clearly apparent from Fig.
  • the flow element is connected in the same manner to the two outlets 18 , and the foils 10, 20 are laid about a clamping ele ⁇ ment identical with said element 21 -22.
  • the width and length of the flow element may be about 4 m and, respectively, 10 m, the distance between a weld joint and the neare st adjacent joint may be 3 to 4 cm, and the diameter of a flow gap at a system filled with water may be 2 to 3 cm.
  • FIG. 6 A great number of flow elements of the kind des cribed above are com ⁇ prised in the heat exchanger according to Figs . 6-7.
  • a container or basin 60 two main conduits 61 are provided, with four feed conduits 62, 63 , 64, 65 connected thereto.
  • feed conduits 62, 63 , 64, 65 connected thereto.
  • flow elements are connected, of which only a few are shown in the drawing, viz. the elements 66, 67, 68.
  • the lower ends of the flow elements are connected to r eturn conduits 72, 73 , 74, 75 , which in their turn are connected to main conduits 71 , one of which appear s from Fig. 6.
  • the heat exchanger further comprises inlets 76, 77 , 78 located below the flow elements, and outlets 86, 87, 88 located above the flow elements .
  • the main conduits 61 are intended for relatively warm water fro an evaporation chamber
  • the main conduits 71 are intended for cooled water to the evaporat ion chamber
  • the inlets 76- 78 are intended for relatively cold sea water
  • the outlets 86-88 ar e in-, tended for the dis char ge of heated sea water .
  • the relatively warm fresh water (temper ⁇ ature on the inlet side, for example, x + 12 C) flowing downward will meet relatively cold sea water (temperature on the inlet side x C) flowing upward.
  • the downwa d and, r e spectively, upward flows are facilitated thereby that the fre sh water is cooled and, respectively, the sea water is heated.
  • the sea wate r temperature on the outlet side may be about x + 10 C, while the temperature of the cooled fresh water may be about x + 3 C .
  • the pr es sures on both side s of the thin (0, 3 mm) plastic foils in the f low elements are almost equal and pure ⁇ ly static.
  • the fre sh distillate water is given a low static over - pres sur e just sufficient to hold the channels of the elements stretched out against the ambient outer pres sure .
  • the container or basin indicated in Fig. 6-7 may be designed station ⁇ ary in earth as a basin sunk into a shore strip, or as a floating steel or concrete container or as a container of plastic cloth anchored in the sea.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

Echangeur de chaleur destine specialement a refroidir l'eau lors de l'obtention de l'eau douce par distillation de l'eau de mer, comprenant plusieurs elements a fluide essentiellement plans et paralleles. Chaque element a fluide comprend deux feuilles (10, 20) qui sont fixees ensemble dans le sens longitudinal des elements a fluide en plusieurs endroits de maniere telle que chaque element a fluide presente un certain nombre de couloirs longitudinaux (11, 12, 13, 14) delimites par des joints discontinus (15) pour l'ecoulement de l'eau. Les extremites superieures des elements a fluide sont fixees mecaniquement a une entree (17) d'eau douce chaude provenant d'une chambre d'evaporation et les extremites inferieures des elements sont reliees a une sortie (18) d'eau refroidie menant vers la chambre d'evaporation. Les elements a fluide sont disposes dans une cuve (6) pourvue, a sa partie inferieure, d'entrees (76 a 78) d'eau de mer froide et, a sa partie superieure, de sorties (86 a 88) d'eau de mer chaude. L'echangeur de chaleur permet d'obtenir de grandes surfaces d'echange de chaleur en utilisant peu de matiere, ce qui rend economique la fabrication de l'echangeur de chaleur. Les feuilles (10, 20) sont, de preference, en plastique et sont donc legeres et ne presentent pas de problemes de corrosion.
PCT/SE1978/000021 1977-07-27 1978-07-17 Echangeur de chaleur, notamment pour refroidir l'eau lors de l'obtention d'eau douce par distillation de l'eau de mer WO1979000068A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19782856960 DE2856960A1 (de) 1977-07-27 1978-07-17 Heat exchanger especially for cooling water at fresh water recovery by distillation of sea water
BR7808671A BR7808671A (pt) 1977-07-27 1978-07-17 Trocador de calor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7708597 1977-07-27
SE7708597A SE408637B (sv) 1977-07-27 1977-07-27 Vermevexlare, avsedd speciellt for kylning av vatten i samband med utvinning av sotvatten genom destillation av havsvatten

Publications (1)

Publication Number Publication Date
WO1979000068A1 true WO1979000068A1 (fr) 1979-02-22

Family

ID=20331913

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1978/000021 WO1979000068A1 (fr) 1977-07-27 1978-07-17 Echangeur de chaleur, notamment pour refroidir l'eau lors de l'obtention d'eau douce par distillation de l'eau de mer

Country Status (6)

Country Link
EP (1) EP0007340A1 (fr)
JP (1) JPS5467256A (fr)
DK (1) DK332578A (fr)
GB (1) GB2021248B (fr)
SE (1) SE408637B (fr)
WO (1) WO1979000068A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013112A1 (fr) * 1995-10-03 1997-04-10 Hadwaco Ltd. Oy Echangeur de chaleur et son procede de fabrication
FR2771802A1 (fr) * 1997-12-02 1999-06-04 Dietrich & Cie De Echangeur de chaleur metallique emaille et sensiblement plat
WO2000079204A1 (fr) * 1999-06-21 2000-12-28 Keeran Corporation N.V. Bati portant des echangeurs de chaleur et hotte a vapeur accouplee a ce bati

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001794A1 (fr) * 1981-11-20 1983-05-26 Learonal Inc Colloide de cuivre et procede d'activation de surfaces isolantes pour effectuer ulterieurement une metallisation electrolytique
SE509928C2 (sv) 1997-09-23 1999-03-22 Hvr Water Purification Ab Apparat för utvinning av rent vatten ur råvatten

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438432A (en) * 1967-06-26 1969-04-15 North American Rockwell Plastic heat exchanger with anti-buoyancy means
DE1517530A1 (de) * 1966-06-13 1970-01-22 Guery Dipl Ing A Verfahren zur Gewinnung von Salz und Suesswasser aus Meerwasser und sonstigen natuerlich vorkommenden salzhaltigen Waessern
GB1285155A (en) * 1971-03-22 1972-08-09 Albert Edward Merryfull Improved plate heat exchanger
DE2113389A1 (de) * 1971-03-19 1972-09-21 Joachim Gottschall Druckkoerper
GB1333316A (en) * 1970-12-16 1973-10-10 Kymin Oy Kymmene Ab Process for manufacture of radiators
SE387927B (sv) * 1973-05-28 1976-09-20 O Elmqvist Anordning for utvinning av sotvatten genom destillation av havsvatten
FR2308892A1 (fr) * 1975-04-26 1976-11-19 Unilever Nv Element de transfert de chaleur, destine notamment a un collecteur d'energie solaire
US4010733A (en) * 1975-06-03 1977-03-08 The United States Of America As Represented By The United States Energy Research And Development Administration Structurally integrated steel solar collector

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1517530A1 (de) * 1966-06-13 1970-01-22 Guery Dipl Ing A Verfahren zur Gewinnung von Salz und Suesswasser aus Meerwasser und sonstigen natuerlich vorkommenden salzhaltigen Waessern
US3438432A (en) * 1967-06-26 1969-04-15 North American Rockwell Plastic heat exchanger with anti-buoyancy means
GB1333316A (en) * 1970-12-16 1973-10-10 Kymin Oy Kymmene Ab Process for manufacture of radiators
DE2113389A1 (de) * 1971-03-19 1972-09-21 Joachim Gottschall Druckkoerper
GB1285155A (en) * 1971-03-22 1972-08-09 Albert Edward Merryfull Improved plate heat exchanger
SE387927B (sv) * 1973-05-28 1976-09-20 O Elmqvist Anordning for utvinning av sotvatten genom destillation av havsvatten
FR2308892A1 (fr) * 1975-04-26 1976-11-19 Unilever Nv Element de transfert de chaleur, destine notamment a un collecteur d'energie solaire
US4010733A (en) * 1975-06-03 1977-03-08 The United States Of America As Represented By The United States Energy Research And Development Administration Structurally integrated steel solar collector

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013112A1 (fr) * 1995-10-03 1997-04-10 Hadwaco Ltd. Oy Echangeur de chaleur et son procede de fabrication
AU700090B2 (en) * 1995-10-03 1998-12-24 Hadwaco Ltd Oy Heat exchanger and a method for producing the same
US5927383A (en) * 1995-10-03 1999-07-27 Hadwaco Ltd Oy Heat exchanger and a method for producing the same
FR2771802A1 (fr) * 1997-12-02 1999-06-04 Dietrich & Cie De Echangeur de chaleur metallique emaille et sensiblement plat
WO1999028691A1 (fr) * 1997-12-02 1999-06-10 De Dietrich & Cie Echangeur de chaleur metallique emaille et sensiblement plat
US6460614B1 (en) 1997-12-02 2002-10-08 De Dietrich Process Systems Substantially flat enamelled metal heat exchanger
WO2000079204A1 (fr) * 1999-06-21 2000-12-28 Keeran Corporation N.V. Bati portant des echangeurs de chaleur et hotte a vapeur accouplee a ce bati

Also Published As

Publication number Publication date
JPS5467256A (en) 1979-05-30
SE7708597L (sv) 1979-01-28
GB2021248A (en) 1979-11-28
SE408637B (sv) 1979-06-25
GB2021248B (en) 1982-06-03
DK332578A (da) 1979-01-28
EP0007340A1 (fr) 1980-02-06

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