WO1991016588A1 - Dispositif de transfert thermique - Google Patents

Dispositif de transfert thermique Download PDF

Info

Publication number
WO1991016588A1
WO1991016588A1 PCT/EP1990/000620 EP9000620W WO9116588A1 WO 1991016588 A1 WO1991016588 A1 WO 1991016588A1 EP 9000620 W EP9000620 W EP 9000620W WO 9116588 A1 WO9116588 A1 WO 9116588A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
transfer fluid
heat transfer
circuit
fluid
Prior art date
Application number
PCT/EP1990/000620
Other languages
English (en)
Inventor
Jan Borg
Original Assignee
Jan Borg
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 Jan Borg filed Critical Jan Borg
Priority to PCT/EP1990/000620 priority Critical patent/WO1991016588A1/fr
Publication of WO1991016588A1 publication Critical patent/WO1991016588A1/fr

Links

Classifications

    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0226—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with an intermediate heat-transfer medium, e.g. thermosiphon radiators
    • 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
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers

Definitions

  • Th e present invention relates to a method and an apparatus tor imoroying the etficiency of a heating system which may comprise one or several heater apparatuses i ns i de which iscirculated a heat transfer fluid.
  • the prior art comprises radiators inside which iscirculated for instance water or vapor, in order to transfer heat to the radiator and further to the ambient air. whereby the water or vapor is circulated through some kind of heater in order to be heated after having given off heat to the radiator or several radiators.
  • the water or vapor acts to transport the heat between the heater and one or several radiators, and the heat given off by the water or vapor corresponds to the heat supplied by the heater.
  • the object of the present invention is to achieve a method and an apparatus which make it possible to improve the efficiency, in that the energy consumption is less than the heat given off by the apparatus.
  • the present invention makes use of a fluid which condenses
  • An advantageous embodiment ot the method comprises that the heat is supplied by means of a fluid which itself is heated about 10 % of the time which the apparatus is used.
  • the apparatus may for instance be a radiator containing a closed circuit for circulation of a fluid, for instance Arcton 22. being at a pressure of for instance 50 to 60 N/cm2.
  • the circuit may comprise one or several loops which are surrounded by ribs or baffles in order to increase the heat transfer area.
  • the loops are coupled to an internal heat exchanger, in which heat is supplied to the fluid.
  • the internal heat exchanger may for instance be a horisontal tube which isclosed at both ends and contains a conduit extending longitudinally through the tube.
  • a heating fluid for instance water having a temperature slightly above the evaporation temperature of Arcton 22 at the existing pressure, for instance 95 oC. flows through the conduit, and heat is transferred to the Arcton.
  • the loop or loops of the closed c i rcu i t is/are coupled to each and of the horizontal tube, at different heigths. and evaporated Arcton will enter the hiohest end of the loop or loops and rise inside the closed circuit.
  • the vapor will give off heat and at least partly condense, and the liquid will flow down to the horisontal tube. This process will continue as long as a certain amount of the heat is transferred from the conduit.
  • the heat given off by the vapor is transferred through the walls of the tube constituting the closed circuit, and the heat may for instance be transferred to the ambient air by convection.
  • the fluid, for instance Arcton 22, inside the closed circuit circulates without the use of pump.
  • a conduit through the horisontal pipe for supply of heat by means of a flowing fluid can be used another kind of heating means, for instance an electric heater.
  • the tube of the closed circuit may, in a perse know manner, be equipped with ribs or baffles externally.
  • the apparatus according to the invention can be utilized in a system for instance for house heating, in which several apparatuses may be coupled in series, whereby the conduit for the flow of of the heat supply fluid runs through all the apparatuses. and means such as a valve may be provided for switching the circulation on and off. Means may also be provided for varyino the temperature and pressure of the heat supply fluid.
  • Fig, 1 presents the vertical section of a radiator appropriate for use in the present invention.
  • Fig.2 presents schematically a house heating system in which the procedure of the invention is applied.
  • Fig. 1 the radiator or heater element in which the method of the present invention can be applied.
  • the radiator comprises a hori zontal heat exchanger in consisting of a tubular container 2 containing a fluid, such as Arcton or equivalent, both in gaseous and liquid form, which evaporates with the aid of a heating conduit 3 passing through the heat exchanger.
  • a fluid such as Arcton or equivalent
  • the element 4 is composed of a plurality of vertical pipes 5 connected on the top margin of the container 2.
  • the house heating system depicted in Fig.2 comprises additionally a heating boiler 8, a water pipeline 9 and a shut-off valve 10.
  • the surface temperature of the radiator had stabilized at 54 in continuous operation.
  • the radiator was then tipped over on its side, whereby the gaseous arcton could not ascend in the pipe 5 and remained instead in the heat exchanger 1 to be heated further.
  • the radiator was kept lying on its side for three minutes, during which time the surface temperature of the radiator at a given point decreased to 48 ,whereafter the radiator was pieced upright once more and the arcton could ascend.
  • the sureface temperature of the radiator rose to 60 in one minute and begin thereafter to go down very slowly, reaching the limit of 54 only after half an hour. In this way, the surface temperature of the radiator could be held most of the time over 54 which ismean temperature in a continuously operating radiator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

On décrit un procédé permettant d'améliorer l'efficacité d'un système de chauffage, comprenant un ou plusieurs éléments de chauffage (7) dans lesquels un fluide de transfert thermique circule à l'intérieur d'un espace fermé (2, 5, 6), la pression dudit fluide augmentant exponentiellement avec l'accroissement de la température. Le but de l'invention est d'améliorer l'efficacité du système de chauffage en variant la température et la pression du fluide de transfert de chaleur contenu dans l'élément de chauffage (7) par la mise en route et l'arrêt alternants du chauffage du fluide de transfert de chaleur.
PCT/EP1990/000620 1990-04-17 1990-04-17 Dispositif de transfert thermique WO1991016588A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP1990/000620 WO1991016588A1 (fr) 1990-04-17 1990-04-17 Dispositif de transfert thermique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1990/000620 WO1991016588A1 (fr) 1990-04-17 1990-04-17 Dispositif de transfert thermique

Publications (1)

Publication Number Publication Date
WO1991016588A1 true WO1991016588A1 (fr) 1991-10-31

Family

ID=8165480

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/000620 WO1991016588A1 (fr) 1990-04-17 1990-04-17 Dispositif de transfert thermique

Country Status (1)

Country Link
WO (1) WO1991016588A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357850A1 (fr) * 1976-07-06 1978-02-03 Zanussi A Spa Industrie Radiateur pour installations de chauffage ou l'equivalent
FR2391426A1 (fr) * 1977-05-16 1978-12-15 Bulten Kanthal Ab Radiateur de chaleur avec fluide en circulation cycliquement vaporisable et condensable
DE3331268A1 (de) * 1983-08-10 1985-03-14 Matsushita Electric Works, Ltd., Kadoma, Osaka Rohrheizkoerper
AU587005B2 (en) * 1985-01-23 1989-08-03 Hopeton George Gray Solar heating system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357850A1 (fr) * 1976-07-06 1978-02-03 Zanussi A Spa Industrie Radiateur pour installations de chauffage ou l'equivalent
FR2391426A1 (fr) * 1977-05-16 1978-12-15 Bulten Kanthal Ab Radiateur de chaleur avec fluide en circulation cycliquement vaporisable et condensable
DE3331268A1 (de) * 1983-08-10 1985-03-14 Matsushita Electric Works, Ltd., Kadoma, Osaka Rohrheizkoerper
AU587005B2 (en) * 1985-01-23 1989-08-03 Hopeton George Gray Solar heating system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
M. Backstrom, E. Emblik: "Kaltetechnik", 27 October 1965, Verlag G. BRAUN, (Karlsruhe, DE), see paragraph 6.53; figure 6.53a *

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