WO1981003539A1 - Heat transference unit - Google Patents

Heat transference unit Download PDF

Info

Publication number
WO1981003539A1
WO1981003539A1 PCT/DK1980/000032 DK8000032W WO8103539A1 WO 1981003539 A1 WO1981003539 A1 WO 1981003539A1 DK 8000032 W DK8000032 W DK 8000032W WO 8103539 A1 WO8103539 A1 WO 8103539A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
vessel
waste
container
thermal
Prior art date
Application number
PCT/DK1980/000032
Other languages
French (fr)
Inventor
Vangsaae K Hou
Original Assignee
Vangsaae K Hou
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 Vangsaae K Hou filed Critical Vangsaae K Hou
Priority to DE803050437A priority Critical patent/DE3050437A1/en
Priority to PCT/DK1980/000032 priority patent/WO1981003539A1/en
Priority to JP56501004A priority patent/JPS57500706A/ja
Publication of WO1981003539A1 publication Critical patent/WO1981003539A1/en
Priority to SE8200328A priority patent/SE8200328L/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of heated water
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/022—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/20—Sewage water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • Apparatus for the recovery of the latent heat of a liquid such as waste-water refers to an apparatus of the type in the claim's introductory description.
  • the hot waste-water flows down into a thermal-vessel and is stored there until the next outflow of waste-water.
  • the thermal-vessel's wall is produced of a high-insulating material, e.g. plasticfoam.
  • a container such as a commonly available tapwater tank produced of a heat conductive material, e.g. iron, is submerged in the thermal-vessel.
  • the container-part holds the liquid which shall receive the heat energy.
  • the waste-water transmits its heat energy to, for example, tapwater in the container-part.
  • the waste-water is stored in the thermal-vessel so long as it is necessary to release its optimum heat energy.
  • the size of the thermal-vessel is adopted to the prevailant conditions, so for example, it can contain the amount of waste-water that flows out of a bath.
  • Waste-water has direct contact with the container-part, therefore resulting in a quick and effective heatflow from waste-water to tapwater. Waste-water and tapwater reach the same temperature relatively quickly.
  • the wall of the thermal-vessel is formed internally as a screw-shaped channel.
  • This screw-shaped channel or coil completely encircles the container-part.
  • thermal-vessel + Container-part to work as a Heat Transference Unit, when warm liquid flows down into the thermal-vessel.
  • the claim's characterization is achieved, in that the waste-water's energy is utilized as best as possible.
  • the coil fulfills four functions: 1) It can store large quantities of liquid. 2) It strengthens the vesselwall.
  • the thermal-vessel's simple developement and production material ensures that no heat emmission transmits to its surroundings.
  • the thermal-vessel can be developed very cheaply, and there are many choices of production material.
  • the thermal-vessel can be used as an ordinary container for liquid, a watertank, or for example, in connection with a periodic heat source - solar heat.
  • the thermal-vessel can be used as a common insulation holder.
  • the thermal-vessel can be developed on the site of use and, for example, be cast down into the ground, or placed outside the house.
  • the thermal-vessel can if it is. utilized as a part for changing heat, be supplied with a drain-cock in the bottom in respect to sludge-rinsing possibilities, but when the cost of the thermal-vessel is so little, it should be thought that the thermal-vessel can be replaced by a new one if there is need for that.
  • the container-part can be supplied with a coil-insert, where the inflow of, for example, tapwater is in the bottom through the centre of the coil-insert, and the outflow of tapwater at the top, after running through a screw-shaped channel or coil.
  • a coil-insert where the inflow of, for example, tapwater is in the bottom through the centre of the coil-insert, and the outflow of tapwater at the top, after running through a screw-shaped channel or coil.
  • the thermal-vessel would be completely insulated if provided with a thermal-lid.
  • Fig. 1. shows the elaborated form for the apparatus according to the invention. The drawing is in sectioned perspective.
  • Fig. 2. shows the container-part's coil-insert in perspective.
  • Fig. 3. shows the elaborated form for the apparatus according to the in vention. The drawing is in section.
  • Fig. 1. shows the elaborated form for the apparatus according to the invention.
  • the drawing is in sectioned perspective.
  • the warm waste-water flows down into the thermal-vessel K, through the livery pipe t, and runs through the coil S.
  • the waste-water is now stored in the coil S, which encircles the container B.
  • the container B is suplied inside with a coil-insert P.
  • the coil-insert P is formed with a screw-shaped channel or coil s.
  • the substance which shall recieve heat from the waste-water flows into the container through the coil-insert P's centre tb, whereafter it runs through the coil s and drains at the top through ab.
  • the next emtyring of waste-water takes place, it flows into the thermal-vessel K in the described way, therewith the earlier-emtied waste-water is discharged through the coil S and flows out at the bottom, then up through the discharge pipe a.
  • Fig. 2. shows the container-parts coil-insert P.
  • P can be constructed of, for example, plastic or plasticfoam.
  • Fig. 3. shows the elaborated form for the apparatus according to the invention.
  • the drawing is in section and shows a typical container with a coil-insert P.

Abstract

An apparatus for the recovery of latent heat from a liquid e.g., waste-water, for the heating of, for example, tapwater. It consists of a thermal-vessel (K) with a wall of a high-insulating material. The vessel's innerside is constructed with a screw-shaped channel (S) through which the warm refuse water runs, and is stored, until the next inflow of waste-water. The channel surrounds a container (B) which holds the substance to be heated.

Description

HEAT TRANSFERENCE UNIT.
Apparatus for the recovery of the latent heat of a liquid such as waste-water. The invention refers to an apparatus of the type in the claim's introductory description.
It is known from: U.S.A. patent no. 3.361.194, from the Swedish production paper no. 382.496, from the German production papers nos. 1.679-737 and 2. 304.537, from German publication papers nos. 2.438.622, 2.419.479 and 2.70 7.373 and from U.S.A. patent no. 3.521.703 ... apparatus which recover latent heat from waste-water.
In earlier-known apparatus for recovery of latent heat from waste-water, the supplying, and the recieving substances are stored, or flow in their own tank or pipe system. Temparature change and with it the degree of heat utilization is reduced because the heat has to pass through two pipe walls and at the same time, the equal surfaces of contact will be smaller.
Generally one can say that these apparatus are of complicated construction and expensive to produce. They are relatively poor at flushing water and all have to be supplied with an insulating casing to reduce heatloss to their surroundings.
The purpose of this exercise is therefore to construct an apparatus of the above-mentioned type, which is inexpensive, simple to construct, has a good flushing and renders the insulating casing superfluous. This leads to the formulation of the apparatus in the claim's characteristic method.
In the following, an explanation of the flushing and other advantages of the invention are given.
The hot waste-water flows down into a thermal-vessel and is stored there until the next outflow of waste-water. The thermal-vessel's wall is produced of a high-insulating material, e.g. plasticfoam. A container, such as a commonly available tapwater tank produced of a heat conductive material, e.g. iron, is submerged in the thermal-vessel.
The container-part holds the liquid which shall receive the heat energy.
The waste-water transmits its heat energy to, for example, tapwater in the container-part.
The waste-water is stored in the thermal-vessel so long as it is necessary to release its optimum heat energy.
The size of the thermal-vessel is adopted to the prevailant conditions, so for example, it can contain the amount of waste-water that flows out of a bath.
The waste-water has direct contact with the container-part, therefore resulting in a quick and effective heatflow from waste-water to tapwater. Waste-water and tapwater reach the same temperature relatively quickly.
Still water will always be hottest at its surface and coldest at the bottom. The waste-water in the thermal-vessel is still water and therefore it will be an advantage if the inflow of hot waste-water into the thermal-vessel is at the top, and the outflow at the bottom. The flushing of earlier-emptied refuse-water that HAS given up its heat energy is replaced by the waste-water that SHALL give heat.
In order to make the flushing effective, the wall of the thermal-vessel is formed internally as a screw-shaped channel. This screw-shaped channel or coil completely encircles the container-part. When the drainage of waste-water takes place, it will flow into the thermal-vessel at the top and force the earlier-drained waste-water out through the coil and out into the sewage drains. By this method a high degree of utilization of waste heat is achieved.
This simple elaboration of the thermal-vessel causes the thermal-vessel to insulate the container besides, making the system: Thermal-vessel + Container-part to work as a Heat Transference Unit, when warm liquid flows down into the thermal-vessel.
With reference to the earlier-known apparatus, the claim's characterization is achieved, in that the waste-water's energy is utilized as best as possible.
The coil fulfills four functions: 1) It can store large quantities of liquid. 2) It strengthens the vesselwall.
3) It enables a good flushing.
4) It achieves maximal "direct" contact between the heating substance and that substance to be heated.
The thermal-vessel's simple developement and production material ensures that no heat emmission transmits to its surroundings.
The thermal-vessel can be developed very cheaply, and there are many choices of production material. The thermal-vessel can be used as an ordinary container for liquid, a watertank, or for example, in connection with a periodic heat source - solar heat.
The thermal-vessel can be used as a common insulation holder. The thermal-vessel can be developed on the site of use and, for example, be cast down into the ground, or placed outside the house.
The thermal-vessel can if it is. utilized as a part for changing heat, be supplied with a drain-cock in the bottom in respect to sludge-rinsing possibilities, but when the cost of the thermal-vessel is so little, it should be thought that the thermal-vessel can be replaced by a new one if there is need for that.
The container-part can be supplied with a coil-insert, where the inflow of, for example, tapwater is in the bottom through the centre of the coil-insert, and the outflow of tapwater at the top, after running through a screw-shaped channel or coil.
Thereafter it results in a good flushing of tapwater, and the water at the top, the warmest, flows out first.
Other substances than water can run trough the container-part. In residential property only a part of the fresh-air supply is "pre-heated" by flowing through the container-part. The demands for this function do not put any big requirements on the container-part's production material because it shall not now resist sush a big pressure.
The thermal-vessel would be completely insulated if provided with a thermal-lid.
The invention is explained in the following in connection to the illustrations.
Fig. 1. shows the elaborated form for the apparatus according to the invention. The drawing is in sectioned perspective. Fig. 2. shows the container-part's coil-insert in perspective. Fig. 3. shows the elaborated form for the apparatus according to the in vention. The drawing is in section.
Fig. 1. shows the elaborated form for the apparatus according to the invention. The drawing is in sectioned perspective.
The warm waste-water flows down into the thermal-vessel K, through the livery pipe t, and runs through the coil S. The waste-water is now stored in the coil S, which encircles the container B. The container B is suplied inside with a coil-insert P. The coil-insert P is formed with a screw-shaped channel or coil s.
The substance which shall recieve heat from the waste-water flows into the container through the coil-insert P's centre tb, whereafter it runs through the coil s and drains at the top through ab. When the next emtyring of waste-water takes place, it flows into the thermal-vessel K in the described way, therewith the earlier-emtied waste-water is discharged through the coil S and flows out at the bottom, then up through the discharge pipe a.
Fig. 2. shows the container-parts coil-insert P.
If it is tapwater which shall be heated, it flows into the inlet tb in the centre of the coil-insert P, down through P and out in the screw-formed coil s through which it runs. P can be constructed of, for example, plastic or plasticfoam.
Fig. 3. shows the elaborated form for the apparatus according to the invention. The drawing is in section and shows a typical container with a coil-insert P. The inflow of waεte-water through t and discharge through

Claims

CLAIM FOR PATENT.
An apparatus for the recovery of latent heat from a liquid e.g. , waste-water, for the heating of, for example, water in a tapwater container (B), the container of which being surrounded by an isulating mantle (K), of a high-insulating material. It is c h a r a c t e r i z e d by the container being formed as a vessel with a detachable lid, where the vessel (K)'s inside wall is formed with a screw-shaped channel or coil (S), which is arranged for the flow of waste-water from the top, and for the storage of this until the next inflow of waste-water. In the same way, the container (B), the wall of which, in the known manner, consisting of a heat-conducting material, e.g., iron, is tightly surrounded by the vessel (K) and provided inside with a screw-formed channel or coil insert (s) for the inflow of, e.g. , water from a waterworks, at the bottom centre of the coil insert (P).
PCT/DK1980/000032 1980-05-27 1980-05-27 Heat transference unit WO1981003539A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE803050437A DE3050437A1 (en) 1980-05-27 1980-05-27 Heat transference unit
PCT/DK1980/000032 WO1981003539A1 (en) 1980-05-27 1980-05-27 Heat transference unit
JP56501004A JPS57500706A (en) 1980-05-27 1980-05-27
SE8200328A SE8200328L (en) 1980-05-27 1982-01-21 VERMEATERVINNINGSBEHALLARE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
WODK80/00032 1980-05-27
PCT/DK1980/000032 WO1981003539A1 (en) 1980-05-27 1980-05-27 Heat transference unit

Publications (1)

Publication Number Publication Date
WO1981003539A1 true WO1981003539A1 (en) 1981-12-10

Family

ID=8152858

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1980/000032 WO1981003539A1 (en) 1980-05-27 1980-05-27 Heat transference unit

Country Status (4)

Country Link
JP (1) JPS57500706A (en)
DE (1) DE3050437A1 (en)
SE (1) SE8200328L (en)
WO (1) WO1981003539A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530326A1 (en) * 1982-07-16 1984-01-20 Bonnet Ets Calory retrieving unit and dishwasher fitted with such a unit.
US5799726A (en) * 1996-01-23 1998-09-01 Frank; Jimmy I. Refrigerated mixing chamber and method for making same
GB2402204A (en) * 2003-05-21 2004-12-01 Villers Pierre De A heat exchanger for waste water
US7293603B2 (en) 2004-11-06 2007-11-13 Cox Richard D Plastic oil cooler
WO2010139334A2 (en) * 2009-05-30 2010-12-09 Arkitektfirmaet Bo Christensen Aps Heat exchanger for recuperation of residual heat from waste water
WO2011138010A3 (en) * 2010-05-07 2012-01-19 Uhrig Kanaltechnik Gmbh Heat exchange device, use and heat exchange arrangement
US8162040B2 (en) * 2006-03-10 2012-04-24 Spinworks, LLC Heat exchanging insert and method for fabricating same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015028396A (en) * 2013-07-30 2015-02-12 シャープ株式会社 Heat exchanger and heat exchange system
JP2015081716A (en) * 2013-10-22 2015-04-27 シャープ株式会社 Heat exchanger and heat exchange system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE874920C (en) * 1951-07-26 1953-04-27 Esslingen Maschf A heat exchanger consisting of a tube with ribs on the outside and inside
CH320888A (en) * 1953-01-10 1957-04-15 Waagner Biro Ag Heat exchange device in connection with a centrifugal separator
DE1909402A1 (en) * 1969-02-25 1970-08-27 Hans Viessmann Containers, in particular for the preparation of hot water in heating systems
DE1910824A1 (en) * 1969-03-04 1970-09-10 Heinrich Rosen Cooling ducts for double-walled vessels - of agitator
DE1679737A1 (en) * 1965-11-11 1971-05-13 Hovalwerk Ag Ospelt Domestic water heater
FR2097271A5 (en) * 1970-07-01 1972-03-03 Scheyen Marcel
DE2419479A1 (en) * 1974-04-23 1975-11-13 Doerr Geb Luther Marie Luise Heat exchanger set centrally in its own centrifugal filter - for recovery of heat from dirty waste water
DE2747846A1 (en) * 1976-10-28 1978-05-03 Gen Electric RIBBED MULTI-PASS PIPE HEAT EXCHANGER
EP0004506A2 (en) * 1978-03-21 1979-10-03 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Device for heating a liquid to a given temperature
SE414536B (en) * 1979-05-07 1980-08-04 Nils Alfred Persson Heat exchanger for contaminated water

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE874920C (en) * 1951-07-26 1953-04-27 Esslingen Maschf A heat exchanger consisting of a tube with ribs on the outside and inside
CH320888A (en) * 1953-01-10 1957-04-15 Waagner Biro Ag Heat exchange device in connection with a centrifugal separator
DE1679737A1 (en) * 1965-11-11 1971-05-13 Hovalwerk Ag Ospelt Domestic water heater
DE1909402A1 (en) * 1969-02-25 1970-08-27 Hans Viessmann Containers, in particular for the preparation of hot water in heating systems
DE1910824A1 (en) * 1969-03-04 1970-09-10 Heinrich Rosen Cooling ducts for double-walled vessels - of agitator
FR2097271A5 (en) * 1970-07-01 1972-03-03 Scheyen Marcel
DE2419479A1 (en) * 1974-04-23 1975-11-13 Doerr Geb Luther Marie Luise Heat exchanger set centrally in its own centrifugal filter - for recovery of heat from dirty waste water
DE2747846A1 (en) * 1976-10-28 1978-05-03 Gen Electric RIBBED MULTI-PASS PIPE HEAT EXCHANGER
EP0004506A2 (en) * 1978-03-21 1979-10-03 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Device for heating a liquid to a given temperature
SE414536B (en) * 1979-05-07 1980-08-04 Nils Alfred Persson Heat exchanger for contaminated water

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530326A1 (en) * 1982-07-16 1984-01-20 Bonnet Ets Calory retrieving unit and dishwasher fitted with such a unit.
US5799726A (en) * 1996-01-23 1998-09-01 Frank; Jimmy I. Refrigerated mixing chamber and method for making same
GB2402204A (en) * 2003-05-21 2004-12-01 Villers Pierre De A heat exchanger for waste water
US7293603B2 (en) 2004-11-06 2007-11-13 Cox Richard D Plastic oil cooler
US8162040B2 (en) * 2006-03-10 2012-04-24 Spinworks, LLC Heat exchanging insert and method for fabricating same
WO2010139334A2 (en) * 2009-05-30 2010-12-09 Arkitektfirmaet Bo Christensen Aps Heat exchanger for recuperation of residual heat from waste water
WO2010139334A3 (en) * 2009-05-30 2011-02-24 Arkitektfirmaet Bo Christensen Aps Heat exchanger for recuperation of residual heat from waste water
WO2011138010A3 (en) * 2010-05-07 2012-01-19 Uhrig Kanaltechnik Gmbh Heat exchange device, use and heat exchange arrangement

Also Published As

Publication number Publication date
DE3050437A1 (en) 1982-07-15
SE8200328L (en) 1982-01-21
JPS57500706A (en) 1982-04-22

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