GB2459893A - Water heating system - Google Patents
Water heating system Download PDFInfo
- Publication number
- GB2459893A GB2459893A GB0808443A GB0808443A GB2459893A GB 2459893 A GB2459893 A GB 2459893A GB 0808443 A GB0808443 A GB 0808443A GB 0808443 A GB0808443 A GB 0808443A GB 2459893 A GB2459893 A GB 2459893A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat exchanger
- water
- flow
- heated water
- heating system
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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
- F24D17/0078—Recirculation systems
- F24D17/0084—Coaxial tubings
-
- 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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
-
- 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
-
- 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
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
- F24D3/1066—Distributors for heating liquids
-
- 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
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels
-
- 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
- F24D2200/04—Gas or oil fired boiler
-
- 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
- F24D2200/08—Electric heater
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
- F24D2220/0264—Hydraulic balancing valves
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/044—Flow sensors
Abstract
A water heating system, in which water from a relatively low pressure closed-loop heated water circuit flows through a heat exchanger 16, through which a relatively high pressure mains cold water feed 17 also flows. In use, the system may be used to supply both a demand for hot water from the high pressure circuit and/or a demand from heated water consumers, such as radiators 14 or showers. Preferably, the low pressure heated water always flows first through the heat exchanger before supplying any of the heated water consumers serviced by the system. The heat exchanger may comprise a plurality of heat exchangers operating in parallel, where at least one heat exchanger comprises a plate heat exchanger (see figures 4 and5). In another aspect of the invention, one or more flow restrictors (see figures 6 and 7) are incorporated into the heat exchanger infeed flow line.
Description
I -1-
WATER HEATING SYSTEM * * * *. . * *I* *
Field of the Invention :. 15
* ** The invention relates to water heating systems.
The invention is applicable in theory to fluid heating systems generally and the term **..* "water" in this specification is to be interpreted accordingly. In practical embodiments, however, the invention is especially readily applicable to hot water heating systems and will be described, by way of example only, with reference to one such system.
The State of The Art Water heating systems in which water from a relatively low pressure closed-loop heated water circuit flows through a heat exchanger to heat either or both of a relatively high pressure mains cold water inflow, and a heated water consumer such as a radiator or a shower, are known.
Such systems will be referred to in this specification as (a) system(s) of the kind in question.
In such a system, the water flowing round the closed-loop heated water circuit is usually pumped and the heat is provided by a boiler, the output of whose heating coil is fed to a water storage tank. The mains cold water circuit, by contrast, enters at the relatively high mains-fed pressure. Solenoid valves sense when hot water is needed by the mains circuit and divert the flow from the storage tank appropriately through a heat exchanger -through which the mains cold water circuit also passes to be indirectly heated. In the summer months, when demands from radiators for example, may be non-existent, the valves divert the heated water from the boiler-and -pump driven low pressure closed-loop circuit wholly through the heat exchanger when demand is sensed from the mains. In the winter, the boiler via its storage tank must supply both the radiator circuit and the mains hot water demands.
A known drawback of these systems of the kind in question is the need to maintain a relatively and wastefully large volume of water in the storage tank for large parts of the :: time. In the summer months, again, for example the need for hot mains-fed water at the taps which fill bath or basin may be the only demand on the system; and that demand may arise only in the early morning (when the inhabitants wash before going out) and again in the relatively late evening (when the washing-up needs to be done after dinner).
Yet the storage tank has to be heated, for both of these, throughout its whole volume to a high temperature. If the tank is a large one, as is often the case in houses with large families, the surplus will be wasted.
The problem to be overcome is therefore how to mitigate this inefficiency in systems of the kind in question whilst ensuring the continuity of relatively readily available hot water throughout the normal waking day to heated water consumers (such as radiators and showers) and mains hot water users (such as baths and basins).
Relevant Prior Proposal Patent specification number GB2353506 (Dedicated Pressure Systems Limited) discloses a system of the kind in question in which a flow sensing switch, provided in the mains pressure water circuit of a heat exchanger, detects a demand from the mains supply for hot water and operates to divert heated water from the relatively low pressure circuit to the heat exchanger to provide the demanded supply. When demand ceases, the flow from the low pressure circuit into the heat exchanger is automatically stopped.
This goes some way into obviating the need for a large volume of water in a storage tank to be kept continually hot to supply intermittent needs of baths or basins in the building serviced by the system. But it still lacks thermal efficiency in absolute terms. In the current age in which we live, demands to maximise thermal efficiency are becoming intense. The system of patent specification GB2353506 goes only part of the way to satisfying these demands.
Summary of the Invention
A water heating system according to the invention differs from that shown in patent specification GB2353506 in that water from the relatively low pressure closed-loop heated water circuit always flows through the heat exchanger; and/or always flows first through the heat exchanger before supplying any of the heated water consumers such as radiators, S. showers etc. * In another, independent, broad aspect the invention comprises the incorporation into a system of the kind in question of one or more flow restrictors in the high pressure mains entry to the heat exchanger circuit at or adjacent the point where the infeed flow enters the heat exchanger matrix.
These independent aspects of the invention may be combined but are clearly so linked as to form part of the same inventive concept, namely, the provision of means to increase the thermal efficiency of a system of the kind in question by positive structural modification.
Where one or more flow restrictors is incorporated then the or each such restrictor may be inserted into the flow line in the form of a collar with essentially no function other than to restrict the flow through the bore of the collar by a single predetermined amount dictated by the collar bore size. Such an insert is therefore distinguished from, for example, known flow line valves which have an essential function of diverting flow and/or incrementally increasing or decreasing it and whose flow restricting effect is incidental to that primary function.
Preferably in any system embodying the invention, there is provided a plurality of heat exchangers, one or some at least of which are plate heat exchangers, operating in parallel.
In the instance just outlined, preferably both or all the heat exchangers are plate heat exchangers.
Each of these last-mentioned possibilities, whether used atone or together, again goes to increasing the thermaL efficiency of the system.
The invention includes within its scope a water heating system substantially as herein described with reference to and/or as illustrated in any appropriate combination of the io accompanying text and all but Figure 1 of the accompanying drawings.
Once such system will now be described with reference to those drawings and, whilst it is :::: by way of example only, it is at this current undisclosed stage the best way known to the Applicant of putting the invention into practice. :. 15 * S..
Brief Description of the Drawings
Figure 1 shows the general form of a known system of the kind in question.
S.....
Figure 2, again in diagrammatic form, shows a system embodying the invention.
Figure 3 shows the valving arrangements around a heat exchanger in such a system.
Figures 4 and 5 show parallel-operating plate heat exchanger arrangements in the system.
Figures 6 and 7 illustrate different forms of flow restrictors used in the system.
Description of the Preferred Embodiment
In the generally known water heating system illustrated diagrammatically in Figure 1, a gas-fed or oil-fed boiler 11 heats the tubular coil 12 incorporated within it and a pump 13 sends the water from within the coil 12 around a relatively low pressure closed-loop system to feed one or more heat consumers in the form of radiators 14 and, alternatively or additionally, as dictated by a three-way diverter valve 15, a heat exchanger 15 before the heated water is returned to the boiler 11.
When the sole or primary demand on this closed loop heated is from the central heating system incorporating the radiators 14, the valve 15 prohibits any supply to the heat exchanger 16. By contrast, when the relatively high pressure mains cold water infeed 17 demands a supply of hot water to the bath taps or basin taps in the building serviced by the system, the valve 15 cuts off supply to the radiators 14 and shunts the hot water from the boiler through the heat exchanger 16 before returning it to the boiler, and the mains water supply 17 is heated indirectly via the heat exchanger.
When the heated water consuming radiators 14 and the mains supply 17 simultaneously demand a supply of heated water, the valve 15 will divert heated water from the boiler to the one and to the other, selectively, as dictated by the action of temperature sensors in a :. 15 known manner. *
Because of the need to keep a relatively large volume of heated water readily available, a water storage tank 18 is incorporated into the low pressure closed-loop heated water circuit. As shown, the tank 18 is a conventional tank of the kind familiar from domestic practice. Equally conventionally, it will incorporate one or more electric thermostat-governed heaters to augment the heated water supply from the boiler 11 itself. The well known currently branded "Economy 7" tanks show just how large these water storage tanks 18 can be in practice.
In the system of Figure 2, by contrast, the heated water outflow from the boiler goes first through the heat exchanger, through which the high pressure mains cold water circuit also flows, before supplying any of the heated water consumers such as the radiators 14. Again an automatically activated temperature-sensing-driven diverter valve is used but which ever way the valve operates, it cannot shunt the heated water flow past the heat exchanger. The flow must at all times go first through the heat exchanger before proceeding, either via a direct return to the boiler, or to the radiators or showers served by the system.
In the figure 2 system there is therefore no need for a large water storage tank of the kind shown as tank 18 in Figure 1.
Plate heat exchangers are known for systems of the kind in question and the Figure 2 system. whilst illustrating diagrammatically only one such heat exchanger, in fact uses several of them plumbed to operate in parallel. Figure 3 shows the valving arrangements and its text makes the Figure self-expLanatory. Figures 4 and 5 show how a bank of several plate heat exchangers is arranged and, whilst each of these plate heat exchangers has a designed flow rate of water to be heated at a given heating input temperature, by reducing the flow rate through the heat exchanger, a greater temperature rise is achieved.
A plate heat exchanger designed to pass, for example, 15 litres per minute at an input * S S temperature of 80°C will give a 35°C temperature rise. Reducing the flow rate to, say, 6 litres per minute will achieve a temperature rise of 50°C. With an ordinary unrestricted designed flow rate through the heat exchanger, an 80°C heated water input will suffer a 20°C drop across the heat exchanger as it exits. By reducing the flow rate as above the temperature drop will reduce and the infeed temperature to the heat exchanger can be : .. reduced to, say, 70°C.
*SS***
S
Figures 6 and 7 show various forms that the flow restrictors might take. Again the text in these figures makes the construction self-explanatory. Each of them is designed to be fitted immediately adjacent the point of entry of the water flow to the heat exchanger. All of them have only one essential function, namely, to restrict the infeed flow rate and no other primary function. Each is designed to be retro-fitted to the existing pipework of a conventional system which is to be modified to operate in accordance with the invention, although ideally a system embodying the invention would have its plate heat exchanger fittings made specifically to suit the ready adoption of one or more of these flow restrictors.
Key for Figures 1 to 6 Figure 1 11 = A Gas or Oil Fed Boiler.
12 = A Tubular Coil.
13 = A Pump.
14 Radiators.
A Three-Way Diverter Valve.
16 = A Heat Exchanger.
17 =A Cold Water Feed.
Figure 2 * S 11 =AGasorOilFed Boiler.
* ,S e S * 12 = A Tubular Coil.
:. 15 13=APump. *
14 = Radiators.
= A Three-Way Diverter Valve.
16 = A Heat Exchanger.
17 =A Cold Water Feed.
18=Alank.
19 = See Figure 3.
Figure 3 = 3 Way Diverter Valve.
21 = Flow To Heating Circuit.
22 = Return To Boiler.
23 = Primary Flow/Return.
24 = Cold Supply To Heat Exchanger.
= Plate Heat Exchanger of Appropriate Size.
26 = Temperature Control Knob.
27 = 4 Way Thermostatic Valve: 4 Way Thermostatic mixing valve:-cold supply passes through valve into heat exchanger -hot water out passes through valve to taps/bath etc. If water gone to taps goes above preset temperature cold water is mixed with tap supply to maintain preset temperature -excess hot water is passed back to heat exchanger.
28 = DHW Out.
29 = Flow Switch.
30 = Flow Restrictor/Isolation Valve.
31 = Cold Main.
32 = Primary Heating Flow.
63 = Hot Water Supply Out.
Figure 4 33 = Flow To Heating System.
34 = Diverter Valve. * .
= Return to Heat Source.
36 Plate Heat Exchanger.
. 15 37 Hot Water Supply Out.
38 = Flow From Source.
39 Flow Switch.
= Cold Water Supply In. *S** * S
Figure 5 41 R/H Side Elevation.
42 = Hot Water to Taps.
43 = Heat Source Flow.
44 = L/H Side Elevation.
45 = Flow to Diverter Valve.
46 Cold water inlet pipes reduced in size to restrict flow to plate heat exchangers (increased heat transfer).
47 = Cold Water Flow.
Figure 6 48 = 0 Ring.
49 = Feed Pipe.
= Retaining Nut.
51 = Restrictor Insert Soldered In Place.
52 Plate Heat Exchanger Connection.
53 Soldered.
= Distance to allow for inserting into P/H/E, 0' Ring, grip washer and nut.
54 = Brass Adaptor.
55 = Note: Ideal solution is to have connections on plate heat exchanger made to suit my pipe diameters.
64 = Grip Washer.
= Distance to allow for inserting into PIH/E, 0' Ring, grip washer and nut.
66 = Flow Restriction Methods.
Figure 7 56 = Heat Stream. * * * ** S
57 = Feed Pipe Copper. S * S...
58 = Washer.
:. 15 59 = Captive Nut. S S..
= Plate Heat Exchanger.
61 = Feed Pipe Soldered to Insert.
62 = Brass Insert.
S.....
Claims (5)
- Claims 1. A water heating system of the kind in question, characterised by the feature that water from the relatively low pressure closed-loop heated water circuit always flows through the heat exchanger through which the relativeLy high pressure cold water circuit also flows.
- 2. A water heating system of the kind in question, characterised by the feature that one or more flow restrictors is incorporated into the heat exchanger infeed flow io line.*::::
- 3. A system accordingto claim 1, claim 2 or claims 1 and 2 when combined, characterised in that water from the relatively low pressure closed-loop heated water circuit always flows first through the heat exchanger before supplying any of . 15 the heated water consumers serviced by the system. * *.*
- 4. A system according to any preceding claim, characterised by the feature that the heat exchanger comprises a plurality of heat exchangers, one or some at least of which comprise a plate heat exchanger, with the heat exchangers operating in parallel.
- 5. A water heating system substantially as described herein with reference to and as illustrated in any appropriate combination of the accompanying text and all but Figure 1 of the accompanying drawings.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0808443A GB2459893B (en) | 2008-05-09 | 2008-05-09 | Water heating system |
PCT/GB2009/050497 WO2009136211A2 (en) | 2008-05-09 | 2009-05-11 | Water heating system |
EP09742407A EP2304324A2 (en) | 2008-05-09 | 2009-05-11 | Water heating system |
CA2727532A CA2727532A1 (en) | 2008-05-09 | 2009-05-11 | Water heating system |
US13/002,493 US20110174463A1 (en) | 2008-05-09 | 2009-05-11 | Water Heating System |
AU2009245459A AU2009245459A1 (en) | 2008-05-09 | 2009-05-11 | Water heating system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0808443A GB2459893B (en) | 2008-05-09 | 2008-05-09 | Water heating system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0808443D0 GB0808443D0 (en) | 2008-06-18 |
GB2459893A true GB2459893A (en) | 2009-11-11 |
GB2459893B GB2459893B (en) | 2011-02-16 |
Family
ID=39571069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0808443A Expired - Fee Related GB2459893B (en) | 2008-05-09 | 2008-05-09 | Water heating system |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110174463A1 (en) |
EP (1) | EP2304324A2 (en) |
AU (1) | AU2009245459A1 (en) |
CA (1) | CA2727532A1 (en) |
GB (1) | GB2459893B (en) |
WO (1) | WO2009136211A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110940096A (en) * | 2019-11-01 | 2020-03-31 | 华帝股份有限公司 | Strong air blower air volume adjusting method and system capable of achieving stable combustion under low air pressure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2613097B2 (en) * | 2012-01-09 | 2020-11-18 | Grundfos Holding A/S | Heating device |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2324999A1 (en) * | 1975-09-19 | 1977-04-15 | Ledos Yves | Combined domestic hot water and central heating boiler - has central heating water coil within domestic water cylinder heated by electricity or gas |
FR2444896A1 (en) * | 1978-12-22 | 1980-07-18 | Pinauldt Jacques | Valve for thermo-siphon solar heating system - has venturi in cold water line to create suction and close valve when removing hot water |
GB2181218A (en) * | 1985-10-01 | 1987-04-15 | Peter Loi | Central heating apparatus |
GB2250334A (en) * | 1990-11-21 | 1992-06-03 | Imi Range Ltd | Waterheating apparatus |
DE4438986A1 (en) * | 1994-10-31 | 1996-05-02 | Josef Dirscherl | Domestic hot water installation |
DE19731343A1 (en) * | 1997-07-22 | 1999-01-28 | Hermann Moser | Water storage system containing hot water tank |
GB2364766A (en) * | 2000-06-06 | 2002-02-06 | Nicholas Julian Jan F Macphail | Domestic hot water recirculation arrangement for a combination boiler system |
DE102004044200A1 (en) * | 2003-09-09 | 2005-04-07 | Danfoss Redan A/S | Pressure compensation device for district heating systems consists of cylinder, connected to water feed pipe, and containing a spring-loaded piston |
GB2415242A (en) * | 2004-06-03 | 2005-12-21 | Bosch Gmbh Robert | Heating appliance for room heating and for heating water for domestic use |
GB2431461A (en) * | 2005-10-21 | 2007-04-25 | Fabdec Ltd | Water heating installation |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065054A (en) * | 1976-06-03 | 1977-12-27 | Joh. Vaillant Kg | Circulating water heater |
AT394771B (en) * | 1989-11-07 | 1992-06-25 | Vaillant Gmbh | METHOD AND DEVICE FOR CARRYING OUT THE METHOD FOR IMMEDIATELY TAPING WARM HOT WATER |
FR2722560B1 (en) * | 1994-07-18 | 1996-09-06 | Famchon Michel | GAS BOILER WITH SANITARY PREHEATING EXCHANGER |
DE19632605A1 (en) * | 1996-08-13 | 1998-02-19 | Wilo Gmbh | Hydraulic assembly for a combined heating water and sanitary water system |
US6202935B1 (en) * | 1998-04-15 | 2001-03-20 | Aos Holding Company | Combined potable water heater and hydronic heating system |
DE19844856C1 (en) * | 1998-09-30 | 2000-05-18 | Honeywell Bv | Hot water heater |
DE19910829B4 (en) * | 1999-03-11 | 2004-09-16 | Helmut Bälz GmbH | Multi-circuit heat exchanger |
CA2395903A1 (en) * | 2001-07-27 | 2003-01-27 | James M. Rixen | Heating system for potable water and relatively small areas |
WO2003090001A1 (en) * | 2002-04-22 | 2003-10-30 | North-West Research & Development, Inc. | Heating system |
ITMI20040314A1 (en) * | 2004-02-24 | 2004-05-24 | Gv Stamperie S P A | DEVICE FOR THE MANAGEMENT OF FLOWS IN COMBINED HEATING AND DOMESTIC ENVIRONMENT GROUPS AND BOILER GROUP FOR COMBINED HEATING OF DOMESTIC WATER AND DOMESTIC ENVIRONMENTS |
US8480004B2 (en) * | 2004-11-12 | 2013-07-09 | Zenex Technologies Limited | System for delivering warmed fluids |
DE102005005733B8 (en) * | 2005-02-07 | 2006-06-29 | Peter Gabanyi | Control system for underfloor heating |
JP4700690B2 (en) * | 2005-06-30 | 2011-06-15 | 東芝キヤリア株式会社 | Heat pump type water heater |
CA2720740C (en) * | 2008-04-10 | 2014-10-28 | Dana Canada Corporation | Calibrated bypass structure for heat exchanger |
-
2008
- 2008-05-09 GB GB0808443A patent/GB2459893B/en not_active Expired - Fee Related
-
2009
- 2009-05-11 WO PCT/GB2009/050497 patent/WO2009136211A2/en active Application Filing
- 2009-05-11 AU AU2009245459A patent/AU2009245459A1/en not_active Abandoned
- 2009-05-11 CA CA2727532A patent/CA2727532A1/en not_active Abandoned
- 2009-05-11 EP EP09742407A patent/EP2304324A2/en not_active Withdrawn
- 2009-05-11 US US13/002,493 patent/US20110174463A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2324999A1 (en) * | 1975-09-19 | 1977-04-15 | Ledos Yves | Combined domestic hot water and central heating boiler - has central heating water coil within domestic water cylinder heated by electricity or gas |
FR2444896A1 (en) * | 1978-12-22 | 1980-07-18 | Pinauldt Jacques | Valve for thermo-siphon solar heating system - has venturi in cold water line to create suction and close valve when removing hot water |
GB2181218A (en) * | 1985-10-01 | 1987-04-15 | Peter Loi | Central heating apparatus |
GB2250334A (en) * | 1990-11-21 | 1992-06-03 | Imi Range Ltd | Waterheating apparatus |
DE4438986A1 (en) * | 1994-10-31 | 1996-05-02 | Josef Dirscherl | Domestic hot water installation |
DE19731343A1 (en) * | 1997-07-22 | 1999-01-28 | Hermann Moser | Water storage system containing hot water tank |
GB2364766A (en) * | 2000-06-06 | 2002-02-06 | Nicholas Julian Jan F Macphail | Domestic hot water recirculation arrangement for a combination boiler system |
DE102004044200A1 (en) * | 2003-09-09 | 2005-04-07 | Danfoss Redan A/S | Pressure compensation device for district heating systems consists of cylinder, connected to water feed pipe, and containing a spring-loaded piston |
GB2415242A (en) * | 2004-06-03 | 2005-12-21 | Bosch Gmbh Robert | Heating appliance for room heating and for heating water for domestic use |
GB2431461A (en) * | 2005-10-21 | 2007-04-25 | Fabdec Ltd | Water heating installation |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110940096A (en) * | 2019-11-01 | 2020-03-31 | 华帝股份有限公司 | Strong air blower air volume adjusting method and system capable of achieving stable combustion under low air pressure |
Also Published As
Publication number | Publication date |
---|---|
WO2009136211A2 (en) | 2009-11-12 |
AU2009245459A1 (en) | 2009-11-12 |
GB0808443D0 (en) | 2008-06-18 |
CA2727532A1 (en) | 2009-11-12 |
US20110174463A1 (en) | 2011-07-21 |
EP2304324A2 (en) | 2011-04-06 |
GB2459893B (en) | 2011-02-16 |
WO2009136211A3 (en) | 2012-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7773868B2 (en) | Method and system for recirculating hot water | |
US9151021B2 (en) | Modular water-saving device | |
JP5103567B2 (en) | Heat pump type water heater | |
CN101523118B (en) | Device for dispensing water with variable temperatures | |
CN201218562Y (en) | Water saving device of hot water supply pipeline | |
RU2713247C1 (en) | Repeated heating of domestic and drinking water | |
JP2007017083A (en) | Circulating storage hot water supply system | |
CN207515028U (en) | A kind of central water heating device integrated for warm domestic hot-water | |
GB2580659A (en) | Heated fluid control system | |
AU2007214261A1 (en) | Hot water system | |
GB2459893A (en) | Water heating system | |
US20110272132A1 (en) | Arrangement and method for heating drinking water for one consumption point or tapping point | |
CN207260251U (en) | A kind of hot and cold water tap water saving fixtures | |
AU2007100748A4 (en) | OZCIRC - A Methodology to Save Water & Energy | |
JP4383238B2 (en) | Water heater | |
GB2504082A (en) | Temporary hot water system | |
Davila et al. | Domestic Hot Water Temperature Maintenance Technology Review | |
JP2011202882A (en) | Heat pump hot water supply system | |
JP2005164153A (en) | Hot water supply device | |
WO2020083409A1 (en) | Combined system for heating household water and medium for house heating and/or for cooling of heating medium for house cooling | |
GB2365953A (en) | Supplementary heat exchanger arrangement for providing domestic hot water | |
GB2364766A (en) | Domestic hot water recirculation arrangement for a combination boiler system | |
WO2023242612A1 (en) | Mechanism for providing hot water at the beginning of usage | |
EP2333432A1 (en) | Water and energy economiser | |
JP4873380B2 (en) | Instant hot water system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20101209 AND 20101215 |
|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20130509 |