GB2228563A - Heat exchange system - Google Patents

Heat exchange system Download PDF

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Publication number
GB2228563A
GB2228563A GB8904571A GB8904571A GB2228563A GB 2228563 A GB2228563 A GB 2228563A GB 8904571 A GB8904571 A GB 8904571A GB 8904571 A GB8904571 A GB 8904571A GB 2228563 A GB2228563 A GB 2228563A
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GB
United Kingdom
Prior art keywords
pipe
heat exchange
cause
flow
hot water
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.)
Withdrawn
Application number
GB8904571A
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GB8904571D0 (en
Inventor
Michael John Nunnerley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8904571A priority Critical patent/GB2228563A/en
Publication of GB8904571D0 publication Critical patent/GB8904571D0/en
Priority to EP90302039A priority patent/EP0385700A1/en
Publication of GB2228563A publication Critical patent/GB2228563A/en
Withdrawn legal-status Critical Current

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
    • 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
    • F28D7/024—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 only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F24D3/087—Tap water heat exchangers specially adapted therefore
    • 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
    • F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
    • F24H1/0045—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel with catalytic combustion
    • 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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/526—Pipes in pipe heat exchangers for sanitary 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
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element

Description

t PATENTS ACT 1977 WIL/13MCIA 5685 GB Title: "Heat exchange systems"
Description of Invention
This invention is concerned with improvements relating to heat exchange systems, in particular to systems in which heat is transferred from a first fluid supply to a second fluid supply through the intermediary of a heat exchange member.
Where it is desired to heat fluid, the first fluid supply may be the primary supply, which is heated from a remote source, and from which heat is transferred to the second fluid supply.
Alternatively where it is desired to provide a supply of cooled fluid, the second fluid supply may be the primary supply, which is cooled by means of rer-note refrigeration unit, and by which heat is withdrawn from the first fluid supply.
The invention will be described hereinafter in relation to a heat exchange system in which the first fluid supply is a supply of hot water, which is heated by external heating means (e.g. gas, electricity, solid fuel) and the second fluid supply is a supply of cold water at mains pressure, the temperature of which it is desired to raise. In addition the invention may be utilised when the first fluid supply is provided at a high temperature, such as in relation to a district heating system, or conceivably by natural means.
It will however be appreciated that the invention may be applied to systems in which the first and second fluid supplies are other than water, and where the f irst f luid supply is of a dif f erent f luid f ram the second. Whilst the invention is primarily applicable to liquids, it may have application to gaseous heat exchange systems or liquid/gaseous heat exchange systems.
In a conventional heat exchange system, the heat exchange member is cylindrical. Difficulty is encountered in that flow of one or both said fluid supplies produces a temperature differential which is effective to reduce the flow of heat through the heat exchange member, and thus reduce the efficiency of the heat exchange system. In particular, where on one side of the heat exchange member there is a supply of cold water, and on the other 1 1 f side a supply of hot water, the rate of flow of heat through the heat exchange member is proportional to the temperature differential.
However as the cold water warms, and the hot water cools, the temperature gradient is reduced.
According to this invention there is provided a heat exchange system comprising a first fluid supply, a second fluid supply, therebeing cl temperature differential between said supplies, and a heat exchange member of cylindrical cross-section between said supplies, wherein means is provided to cause at least one of said supplies to spin as it travels along the heat exchange member to increase the temperature gradient in a direction at right angles to the heat exchange member.
Conveniently the heat exchange member is afforded by a pipe or tube, and said means is afforded by one or more helical formations on said pipe.
The spin produced in said supply is effective to throw the heavier (more dense) colder fluid radially outwardly, which may be utilised to maximise heat transfer through the heat exchange member. Thus where the primary supply is subject to spinning, the spinning may be effective around the outside of the heat exchange member to throw the colder fluid of the first supply away from the heat ekchange member.
Alternatively or in addition, where the secondary supply is subject to spinning, the spinning may be effective around the inside of the heat exchange surface to throw the colder fluid towards the heat exchange member.
The invention is particularly useful in a system for heating cold water at mains pressure from hot water which is heated by external heating means whilst at mains pressure.
In this manner energy required to produce the requisite centrifugal forces in the supply or supplies subject to spinning may be derived in part at least by a reduction in the water pressure.
According to this invention there is also provided a heat exchange system comprising a pipe which provides a heat exchange member, means to cause relatively cold water to flow through the pipe, means to cause relatively hot water to flow around the outside of the pipe, and means to cause the cold water to spin, as it flows along the pipe, about the longitudinal axis of the pipe.
In this manner, the colder component of the cold water is thrown radially outwardly being of higher density, against the heat exchange member in substitution for a warmer component thereof which has already partaken of heat exchange from the hot water.
The hot water may be a tank of hot water through which the pipe extends: alternatively the hot water may flow through a second pipe extending around the first said pipe, the hot water occupying the annular space therebetween.
The hot water may be caused to f low through the pipe in the same direction at the flow of cold water, but preferably in the opposite direction.
If desired the flow of hot water may also be subjected to spin, as it flows along the pipe, about the longitudinal axis of the pipe.
In this manner the colder component of the hot water, which has already partaken of a heat exchange to the cold water, is thrown radially outwardly of the pipe from the heat exchange member in substitution for a warmer component.
According to this invention there is also provided a heat exchange system comprising two pipes or tubes one within the other; means to cause relatively cold water to flow through the inner of the two pipes; means to cause relatively hot water to flow through the outer of the two pipes; and means to cause the hot water to spin as it flows along the pipe about the longitudinal axis of the pipe.
In this manner the colder component of the hot water, which has given up heat to the cold water, is thrown radially outwardly of the outer pipe.
Conveniently the cold andlor the hot water is caused to spin by helical ribbing on the inner pipe, conveniently the helical ribbing being effective to cause spin to both f lows.
Preferably the coaxial pipe assembly is itself coiled. and is advantageously located within a hot water tank.
The heat may be input to the water in the tank e.g. by an emersion heater or the water in the tank may be maintained at a high temperature by heat derived from the flow of hot water through the outer pipe.
t Additionally the invention may also be utilised in a refrigeration circuit where the primary supply cooled from an external (refrigerated) source, and is utilised to remove heat from the secondary supply.
Thus according to this invention there is also provided a refrigeration circuit comprising first pipe or tube; second pipe or tube; the first pipe extending within the second pipe; means to cause a primary fluid to flow along the first pipe, and means to cause a secondary fluid to flow along the second pipe; the primary fluid being subjected to a refrigeration operation, and where it is desired to utilise the primary fluid to reduce the temperature of the secondary fluid, wherein means is provided to cause one or both of the primary secondary fluids to spin as they flow through their respective pipes, about the longitudinal axis.
The primary fluid is conveniently a refrigerant such as freon (RTM), and the secondary fluid may be a refrigerant, or may be water).
There will now be given a detailed description. to be read with reference to the accompanying drawings. of a heat exchange system which is a preferred embodiment of this invention, and which has been selected for the purposes of illustrating the invention by way of example.
In the accompanying drawings:
FIGURE 1 is a schematic view of the heat exchange system which is the preferred embodiment of the invention; FIGURE 2 is a schematic sectional view through part of a pipe assembly of the preferred embodiment; FIGURE 3 is an elevational view of a tank of the system; FIGURE 4 is an enlarged view of part of the pipe assembly of the system; and FIGURES 5 and 6 are views, similar to Figures 3 and 4. showing a modified construction.
The heat exchange system which is the preferred embodiment of this invention is a domestic hot water supply, in which it is desired to utilise a primary water supply A, which is heated to a high temperature by an external heating source, to heat a secondary water supply B constituted by water at mains pressure and temperature, for domestic use.
k The preferred embodiment comprises a pipe assembly comprising an elongate internal pipe 6 and an elongate external pipe 8 extending around the pipe 6. The primary water supply is ducted through the pipe 8, flowing through the annular space between the pipes 6 and 8, whilst the secondary water supply is ducted through the pipe 6, the pipe 6 thus providing a cylindrical heat exchange member between the primary and secondary supplies.
Provided on the pipe 6, extending both internally and externally of the heat exchange member, is a helical ribbing 10, said helical ribbing comprising an interior component 10a and an exterior component 10b.
Thus as cold water flows through the pipe 6, it is subjected by the helical component 10a to a helical spinning about the longitudinal axis of the pipe 6, whilst the primary water supply A is subjected to a similar helical spinning by the helical component 1 Ob.
In this manner as the primary water supply A flows along the pipe 8, portions thereof adjacent to the heat exchange member 6, and which by virtue of having partaken in a heat exchange operation, and in consequence being of reduced temperature, being in consequence of higher density are thrown radially outwardly of the pipe 8, to be replaced by relatively warmer water.
Similarly in relation to the flow of secondary water B through the pipe 6, water which has partaken of a heat exchange operation at the surface 6, and which consequently is at an increased temperature and at a lower density, moves radially inwardly to be replaced by relatively colder water.
In this manner the temperature differential across (at right angles to) the heat exchange member is maximised, and heat flow through the heat exchange member 6 is maintained at a high level.
In the system which is the preferred embodiment of this invention, the pipe assembly is located in a generally conventional hot water tank B, which is lagged and maintained filled with water. The primary water supply A is fed by a pump P and a primary heater H, whilst the secondary water supply is provided directly from the mains cold water supply, and is connected on the return side to the domestic hot water taps.
It has been found by the use of the present invention that very high levels of heat exchange may be attained, enabling mains cold water to be k, ji heated at a high rate to a desired temperature, and utilised in a conventional manner.
Figures 3 and 4 illustrate the tank and pipe assembly of the preferred embodiment in more detail, whilst Figures 5 and 6 illustrate an alternative construction, in which the pipe assembly is coiled within the tank T.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, or a class or group of substances or compositions, as appropriate, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
Z 1

Claims (19)

CLAIMS:
1. A heat exchange system comprising a first fluid supply, a second fluid supply, therebeing a temperature differential between said supplies, and heat exchange member of cylindrical cross-section between said supplies, wherein means is provided to cause at least one of said supplies to spin as it travels along said heat exchange member.
2. A heat exchange system according to Claim 1 wherein the heat exchange member is afforded by a pipe or tube.
3. A heat exhange system according to Claim 2 wherein said supply is caused to spin one or more helical formations on the pipe.
4. A system according to any one of the preceding claims wherein the primary supply is subject to spinning.
5. A system according to any one of the preceding claims wherein the secondary supply is subject to spinning.
6. A system according to any one of the preceding claims wherein the primary supply is fluid heated by an external heating means, and the secondary fluid supply is cold water at main pressure.
7. A heat exchange system comprising a pipe which provided a heat exchange member, means to cause relatively cold water to flow through the pipe, means to cause relatively hot water to flow around the outside of the pipe, and means to cause the cold water to Spin as it flows along the pipe about the longitudinal axis of the pipe.
8. A system according to Claim 7 wherein the hot water is a tank of hot water through which the pipe extends.
it
9. A system according to Claim 7 wherein the hot water f lows through a second pipe extending around the first said pipe.
10. A system according to Claim 9 wherein flow of hot water through the second pipe is in the opposite direction to the flow of water through the first pipe.
A heat exchange system comprising two pipes or tubes one within the other, means to cause relatively cold water to flow through the inner of the two pipes, means to cause relatively hot water to flow the outer of the two pipes, and means to cause the hot water to spin as it flows along the pipe about the longitudinal axis of the pipe.
12. A system according to Claim 11 comprising means to cause the cold water to spin as it flows along the pipe about the longitudinal axis of the pipe.
13. A system according to one of Claims 10 and 11 wherein the hot and/or cold water is caused to spin by G helical ribbing on the inner pipe.
14. A system according to Claim 13 wherein the helical ribbing is effective to cause spin in both flows.
15. A system according to any one of Claims 10, 11, 12, 13 and 14 wherein the coaxial pipe asembly is itself coiled, and is located within a hot water tank.
16. A refrigeration circuit comprising a first pipe or tube, a second pipe or tube, the first pipe extending within the second pipe, means to cause a primary fluid to flow along the first pipe, and means to cause a secondary fluid to flow along the second pipe, the primary fluid being subjected to a refrigeration operation, wherein means is provided to cause or both the primary and secondary fluids to spin as they flow through their respective pipes about the longitudinal axis.
k 1
17. A refrigeration circuit according to Claim 16 wherein the primary fluid is a refrigerant.
18. A heat exchange system constructed and arrangeed substantially as hereinbef ore described with reference to the accompanying drawing.
19. Any novel feature or novel combination of features as hereinbefor described and/or as shown in the accompanying drawings.
Published 1990 atThe Patent Office.State House. 6671 High HoIbnrn. London WC1R4TP.FVmher copies maybe obtainedfrom The Patent =ice. Sales Branch, St Mary Cray. Orpington. Kent BR5 3RD. Printed by Multiplex techniques ltd. St Mary Cray, Kent. Con. 1'87
GB8904571A 1989-02-28 1989-02-28 Heat exchange system Withdrawn GB2228563A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8904571A GB2228563A (en) 1989-02-28 1989-02-28 Heat exchange system
EP90302039A EP0385700A1 (en) 1989-02-28 1990-02-27 Heat exchange unit, heat exchange system, method of improving heat exchange efficiency, and refrigeration circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8904571A GB2228563A (en) 1989-02-28 1989-02-28 Heat exchange system

Publications (2)

Publication Number Publication Date
GB8904571D0 GB8904571D0 (en) 1989-04-12
GB2228563A true GB2228563A (en) 1990-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB8904571A Withdrawn GB2228563A (en) 1989-02-28 1989-02-28 Heat exchange system

Country Status (2)

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EP (1) EP0385700A1 (en)
GB (1) GB2228563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29516927U1 (en) * 1995-10-26 1996-02-01 Sgl Technik Gmbh Pipe for heat exchangers with vortex-generating current disturbance elements

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EP0580622A4 (en) * 1991-03-22 1994-08-24 Environmental Prod Amalgam Pty Apparatus for servicing refrigeration systems
DE4141136C2 (en) * 1991-12-13 1996-04-25 Wieland Werke Ag Heat exchange system for heating heating and process water
DE4142488A1 (en) * 1991-12-20 1993-07-01 Ruhrgas Ag HEATING SYSTEM FOR COMBINED HEAT GENERATION AND A HEATING SYSTEM AND A STORAGE TANK FOR DOMESTIC WATER
KR950002487B1 (en) * 1992-05-12 1995-03-20 주식회사금성사 Heat exchanger for gas boiler
DE59607069D1 (en) * 1995-08-22 2001-07-19 Bosch Gmbh Robert Expansion tank in a heating system
NL1004410C2 (en) * 1996-11-01 1998-05-14 Cooperatieve Inkoopvereniging Heater and method for operating it.
US6152086A (en) * 1997-11-03 2000-11-28 Cooperatieve Inkoopvereniging Heating apparatus and method for operation thereof
US6408637B1 (en) 1999-11-01 2002-06-25 Century Mfg. Co. Apparatus and method for recovering and recycling refrigerant
FR2852086B1 (en) * 2003-03-04 2006-02-24 DEVICE FOR THE ACCUMULATION AND DISTRIBUTION OF CALORIFIC ENERGY
NL2003644C2 (en) * 2009-10-15 2011-04-18 Hei Tech Bv HEAT EXCHANGER.
IT1396923B1 (en) * 2009-11-12 2012-12-20 Unical Ag Spa HEAT EXCHANGER WITH INCREASED THERMAL EFFICIENCY.
CN101793473B (en) * 2010-03-10 2015-02-18 北京蓝景圣诺尔能源科技有限公司 Heat-accumulating heat supply unit and heat-accumulating structure thereof
CN103307733B (en) * 2012-03-15 2016-03-23 珠海格力电器股份有限公司 There is the water heater of heat exchanger
CN103307732B (en) * 2012-03-15 2016-03-16 珠海格力电器股份有限公司 There is the water heater of heat exchanger
GB2510794A (en) * 2012-07-25 2014-08-20 Bohdan Majchrowski Heat recovery systems
JP6875794B2 (en) * 2016-05-11 2021-05-26 矢崎エナジーシステム株式会社 Hot water supply system
CN107764122B (en) * 2017-11-20 2023-09-22 济南热力集团有限公司 Large-temperature-difference cold water combined type cascade utilization system based on waste heat utilization
CN117073084A (en) * 2023-08-21 2023-11-17 珠海格莱克科技有限公司 Humidity control apparatus and method for stabilizing water temperature of humidity control apparatus

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GB1338495A (en) * 1971-11-05 1973-11-21 Luft U Kaeltetechnik Veb K Tubular heat exchangers
GB1422793A (en) * 1972-04-15 1976-01-28 Howard F S Heat exchanger element
GB2111667A (en) * 1981-11-21 1983-07-06 Armstrong Eng Ltd Heat exchanger
EP0108525A1 (en) * 1982-11-03 1984-05-16 Thermodynetics, Inc. Heat exchanger
GB2201504A (en) * 1986-12-20 1988-09-01 Wieland Werke Ag Fuel cooler

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FR2148923A5 (en) * 1971-08-10 1973-03-23 Saunier Duval

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1338495A (en) * 1971-11-05 1973-11-21 Luft U Kaeltetechnik Veb K Tubular heat exchangers
GB1422793A (en) * 1972-04-15 1976-01-28 Howard F S Heat exchanger element
GB2111667A (en) * 1981-11-21 1983-07-06 Armstrong Eng Ltd Heat exchanger
EP0108525A1 (en) * 1982-11-03 1984-05-16 Thermodynetics, Inc. Heat exchanger
GB2201504A (en) * 1986-12-20 1988-09-01 Wieland Werke Ag Fuel cooler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29516927U1 (en) * 1995-10-26 1996-02-01 Sgl Technik Gmbh Pipe for heat exchangers with vortex-generating current disturbance elements

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Publication number Publication date
GB8904571D0 (en) 1989-04-12
EP0385700A1 (en) 1990-09-05

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