EP0654138B1 - Appareil de chauffage de liquides - Google Patents

Appareil de chauffage de liquides Download PDF

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Publication number
EP0654138B1
EP0654138B1 EP93918026A EP93918026A EP0654138B1 EP 0654138 B1 EP0654138 B1 EP 0654138B1 EP 93918026 A EP93918026 A EP 93918026A EP 93918026 A EP93918026 A EP 93918026A EP 0654138 B1 EP0654138 B1 EP 0654138B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
heating element
liquid
heating
gap
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
EP93918026A
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German (de)
English (en)
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EP0654138A1 (fr
Inventor
John Graham Hart
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0654138A1 publication Critical patent/EP0654138A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply

Definitions

  • the apparatus and method of the invention provides an improved method of heating liquids prone to fouling.

Abstract

Procédé de chauffage d'un liquide mettant en application une tige (12) à l'intérieur d'un élément de chauffage (14) possédant au moins une surface et où on fait descendre le liquide le long de la tige sous forme d'une pellicule mince (22), de manière que le liquide ne vienne pas en contact avec la surface de chauffage (14). Ledit procédé est réalisé au moyen d'un appareil comprenant un élément de chauffage (14) à l'intérieur duquel est placée une tige (12) exempte de contact avec ledit élément, une source de liquide (18) et des moyens (20) permettant au liquide provenant de la source de s'écouler au-dessus de la tige (12) sous forme d'une pellicule mince (22). La tige (12) est normalement maintenue dans un sens vertical et la source de liquide (28) peut se trouver au sommet de la tige. Le liquide s'écoule sous forme de pellicule (22) en descendant le long de la surface de la tige (12). Celle-ci est entourée par la surface chaude de l'élément de chauffage (14) et la chaleur se diffuse principalement par rayonnement à travers l'espace (16) situé entre la surface chaude de l'élément de chauffage (14) vers le liquide descendant le long de la tige (12). De ce fait, il n'existe aucun contact direct entre le liquide à chauffer et toute surface chauffée de l'élément de chauffage (14). La tige (12) elle-même ne sera pas normalement chauffée et elle peut être fabriquée à partir de matériaux présentant des caractéristiques de résistance à la corrosion, ainsi que des propriétés de dégagement mais possédant une conductivité thermique si faible qu'ils ne seraient pas utilisables pour la fabrication d'échangeurs de chaleur. Elle n'est pas nécessairement fabriquée en métal et peut, par exemple, être constituée par des matériaux tels que de la céramique ou du verre, pourvus éventuellement de revêtements détachables, par exemple en PTFE.

Claims (12)

  1. Procédé pour chauffer un liquide qui comprend la fourniture d'un mandrin non chauffé (12) à l'intérieur d'un élément chauffant (14) ayant au moins une surface chauffante de telle sorte qu'il y ait un intervalle (16) entre le mandrin (12) et l'élément chauffant (14), caractérisé en ce que le liquide (22) descend la surface du mandrin sous la forme d'une pellicule mince et de telle sorte qu'il ne vienne au contact d'aucune surface chauffée de l'élément chauffant (14) mais qu'il soit chauffé par la chaleur qui traverse l'intervalle (16) depuis la surface chauffante de l'élément chauffant jusqu'au liquide (22).
  2. Appareil qui comprend un élément chauffant (14) ayant au moins une surface chauffante à l'intérieur de laquelle est situé un mandrin non chauffé (12) de manière à définir un intervalle (16) entre le mandrin (12) et l'élément chauffant (14) et une source de liquide (18), caractérisé en ce qu'il est prévu des moyens (20) pour permettre au liquide (22) provenant de la source de s'écouler sur la surface du mandrin (12) sous la forme d'une pellicule mince et de telle sorte qu'il ne vienne au contact d'aucune surface chauffée de l'élément chauffant (14) mais qu'il soit chauffé par la chaleur traversant l'intervalle (16) depuis la surface chauffante de l'élément chauffant (14) jusqu'au liquide (22).
  3. Appareil selon la revendication 2, caractérisé en outre en ce que le mandrin (12) est maintenu dans une orientation verticale et en ce que la source de liquide (18) est en haut de celui-ci.
  4. Appareil selon la revendication 3, caractérisé en outre en ce que la surface chaude de l'élément chauffant (14) entoure le mandrin (12) et en ce que la chaleur passe principalement par la chaleur rayonnante à travers l'intervalle (16) entre la surface chaude de l'élément chauffant (14) vers le liquide (22) descendant le long du mandrin (12).
  5. Appareil selon la revendication 3, caractérisé en outre en ce que la surface chaude de l'élément chauffant (14) entoure le mandrin (12) et en ce que la chaleur passe principalement par convection du gaz ou de la vapeur dans l'intervalle (16) entre la surface chaude de l'élément chauffant (14) vers le liquide (22) qui descend le long du mandrin (12).
  6. Appareil selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le mandrin (12) est fait dans un matériau ayant de bonnes propriétés anti-corrosion et de libération mais ayant une faible conductivité thermique.
  7. Appareil selon la revendication 6, caractérisé en outre en ce que le mandrin (12) est fait en céramique ou en verre.
  8. Appareil selon la revendication 7, caractérisé en outre en ce que le mandrin (12) est recouvert d'un revêtement de libération.
  9. Appareil selon l'une quelconque des revendications 2 à 8, caractérisé en outre en ce que le mandrin (12) peut être facilement retiré pour nettoyage.
  10. Appareil selon l'une quelconque des revendications 2 à 9, caractérisé en outre en ce que l'élément chauffant (14) est un élément cylindrique entourant le mandrin (12) sans le toucher.
  11. Appareil selon la revendication 10, caractérisé en outre en ce que l'élément chauffant (14) est chauffé par de l'huile chaude, de la vapeur à haute pression, ou un élément chauffant électrique.
  12. Appareil selon l'une quelconque des revendications 2 à 10, caractérisé en outre en ce que l'intervalle compris entre l'élément chauffant et le mandrin (12) mesure de 2 à 20 mm.
EP93918026A 1992-08-13 1993-08-13 Appareil de chauffage de liquides Expired - Lifetime EP0654138B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB929217176A GB9217176D0 (en) 1992-08-13 1992-08-13 Heating apparatus
GB9217176 1992-08-13
PCT/GB1993/001728 WO1994004876A1 (fr) 1992-08-13 1993-08-13 Appareil de chauffage de liquides

Publications (2)

Publication Number Publication Date
EP0654138A1 EP0654138A1 (fr) 1995-05-24
EP0654138B1 true EP0654138B1 (fr) 1996-12-04

Family

ID=10720274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93918026A Expired - Lifetime EP0654138B1 (fr) 1992-08-13 1993-08-13 Appareil de chauffage de liquides

Country Status (8)

Country Link
EP (1) EP0654138B1 (fr)
JP (1) JPH08500895A (fr)
AU (1) AU4726293A (fr)
CA (1) CA2142291A1 (fr)
DE (1) DE69306395T2 (fr)
ES (1) ES2094559T3 (fr)
GB (1) GB9217176D0 (fr)
WO (1) WO1994004876A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607607B2 (en) 2000-04-28 2003-08-19 Bj Services Company Coiled tubing wellbore cleanout

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB384090A (en) * 1931-01-26 1932-12-01 Eloy Cignolo Apparatus for heating gases by electricity
CH604798A5 (fr) * 1976-06-18 1978-09-15 Bertrams Ag Hch

Also Published As

Publication number Publication date
EP0654138A1 (fr) 1995-05-24
AU4726293A (en) 1994-03-15
DE69306395T2 (de) 1997-07-10
DE69306395D1 (de) 1997-01-16
CA2142291A1 (fr) 1994-03-03
GB9217176D0 (en) 1992-09-23
ES2094559T3 (es) 1997-01-16
JPH08500895A (ja) 1996-01-30
WO1994004876A1 (fr) 1994-03-03

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