EP4400775A1 - Zirkulationssystem für haushaltsheisswasser - Google Patents

Zirkulationssystem für haushaltsheisswasser Download PDF

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Publication number
EP4400775A1
EP4400775A1 EP24020009.7A EP24020009A EP4400775A1 EP 4400775 A1 EP4400775 A1 EP 4400775A1 EP 24020009 A EP24020009 A EP 24020009A EP 4400775 A1 EP4400775 A1 EP 4400775A1
Authority
EP
European Patent Office
Prior art keywords
hot water
domestic hot
heating
circulation
circulating 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.)
Withdrawn
Application number
EP24020009.7A
Other languages
English (en)
French (fr)
Inventor
Pavel Koudelka
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
Publication of EP4400775A1 publication Critical patent/EP4400775A1/de
Withdrawn legal-status Critical Current

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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
    • F24D3/00—Hot-water central heating systems
    • F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
    • 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
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • 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
    • 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
    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves

Definitions

  • the invention concerns circulating systems for heating domestic water, specifically to circulating systems for heating domestic water in blocks of flats and industrial buildings, which contain a tank with a means for the central heating of domestic water which is connected to at least one domestic water distribution circuit to at least one consumption point.
  • DHW domestic hot water
  • Timed cycling is used to reduce energy demand, but this reduces comfort and is not precise, because the temperature may be unstable even in the supply pipe and thus the sense of this is lost. Because water is transported to the entire pipeline when the circulation is engaged, losses and costs are increased, and the consumption of hot water from the system, which can partially replace the circulation, is also not taken into account.
  • the design solution is known where the DHW distribution is carried out so that the primary pipeline with DHW to the appliances is led from the central consumption boiler, which contains the DHW tank, primarily led to the lowest floor, which is connected by vertical pipes branches to individual discharge points.
  • the circulatory, secondary pipeline turns, which leads first parallel to the rising vertical and then with the horizontal primary pipe, drains a certain amount of cooled hot water back to the central heating boiler room.
  • This circulation is carried out by a pump located on the secondary pipe in the central heating boiler room.
  • the amount of water required for discharge is transported by the primary pipeline as well as the amount of water required for circulation.
  • the whole system consists of a primary pipeline used for supplying domestic hot water, which means coverage of hot water consumption, and further from the secondary, circulatory pipelines, serving permanently to return part of the water cooled for re - heating.
  • This pipe is inherently redundant and its function is only to ensure temperature in the primary pipe. Because it is burdened with losses, its temperature is a disadvantage for the entire system.
  • the hot water tank is connected to the public water supply network and is connected to the first return valve to the horizontal secondary pipe and through the second return valve to the third pipeline, connected with the primary pipe by means of the fourth pipe to the second pipeline by the second pipeline. at least one circulation pump.
  • the tank is also equipped with a safety valve and at the point designated for consumption of hot water, is connected to the primary pipe, equipped with a third return valve and possibly a flow meter, which follows the fourth pipeline connected via the fourth return valves to the discharge side of the circulation pump and the horizontal primary pipe.
  • a third return valve and possibly a flow meter which follows the fourth pipeline connected via the fourth return valves to the discharge side of the circulation pump and the horizontal primary pipe.
  • vertical consumption pipes equipped at levels with domestic hot water outflow points and possibly resistance inserts.
  • the goal of the invention is a design solution, which will be simple and thus cheap, while enabling significant energy savings.
  • a circulating system for heating of domestic hot water specifically by a circulating system for heating of domestic hot water, which contains a heating source, or a tank with a means for the central heating of domestic hot water, which is connected to at least one distribution circuit of domestic hot water containing a domestic hot water supply pipe connected to the tank, with at least one consumption point connected to the domestic hot water return line leading back to the tank, and at least one means for domestic hot water circulation, according to the invention, characterised by that, on the domestic hot water distribution circuit beyond the last consumption point.
  • a device is arranged for blocking the circulation of domestic hot water.
  • the advantage is that, due to a closing element being installed at the beginning of each branch of the return pipe, which closes the constant flow of liquid in the pipe, the temperature loss of the domestic hot water in the return pipe will be measured. Lowering the temperature will reduce heat losses in a significant part of the system. Water consumptions also help to maintain the temperature in the supply pipe, meaning the more hot water is consumed, the more is saved. The goal is to maintain the required temperature in the supply pipe, and the lowest possible temperature in the return pipe.
  • the first variant it is to advantage if a device for measuring the temperature of domestic hot water is arranged beyond the last consumption point.
  • the advantage is that by measuring the temperature it is possible to ensure the exact temperature in the supply pipe, without reducing comfort for the user.
  • the second variant it is to advantage if, on the domestic hot water distribution circuit between the last consumption point and the means for blocking the domestic hot water circulation, a device for measuring the temperature of the domestic hot water is arranged.
  • the advantage is that maximum temperature accuracy can be achieved in this way.
  • the means for measuring the temperature of domestic hot water is a switching thermostat connected to a means for blocking the circulation of domestic hot water.
  • the advantage is that the closing element is thus independent of the control element (computer, PLC, etc.), which is unnecessary in this arrangement, indeed the control will not be as accurate, because the temperature cannot be changed and you cannot use, for example, the function of heating against legionella bacteria.
  • the means for measuring the temperature of domestic hot water is connected to the control unit of the means for blocking the circulation of domestic hot water. According to the measured temperature, the closing element then blocks the water circulation.
  • the means for blocking the domestic hot water circulation is a shut-off valve.
  • This valve is a commonly used element and there is no need to provide any special equipment.
  • the means for the circulation of domestic hot water is an automatic pressure circulation pump. It is to advantage that the automatic pressure circulation pump can gradually reduce its output when the individual branches are gradually closed. There is then no need to additionally control the pump's output according to the number of closed branches, because this is done automatically according to the pressure in the pipeline, and ordinary manufactured pumps can be used.
  • the main advantage of the invention is that due to the blocking of the accelerated circulation of domestic hot water at the end of the supply pipe, where the temperature of the domestic hot water is at the level required for the last consumption point, a large saving of energy for heating of domestic hot water is achieved. Specifically, this is done by means for blocking the circulation of domestic hot water, which closes the return branch when the required temperature is reached just beyond the last consumption point. By closing and opening the device for blocking the domestic hot water circulation, a constant temperature is maintained at the end of the pipe. The result is that the temperature in the return pipe is reduced and losses are then minimised. Closing the circulation is especially advantageous for systems that have more than one return branch, because with a single return branch it could be problematic to block the water circulation by stopping the pump.
  • fig. 1 schematically shows the connection of the circulation system for heating of domestic hot water.
  • a circulating system for heating domestic hot water contains a tank 1 with a means 10 for the central heating of domestic hot water, which is connected to three distribution circuits 6 of domestic hot water.
  • the tank 1 is connected to three domestic hot water supply pipes 4 , where each of these domestic hot water supply pipes 4 contains three consumption points 3 , on which are connected three domestic hot water return lines 5 connected back to the tank 1 .
  • the circulating system may contain only one distribution circuit 6 of domestic hot water, or possibly even more than three distribution circuits 6 of domestic hot water.
  • a means 9 for blocking the domestic hot water circulation is arranged, which is a shut-off valve.
  • a means 8 for measuring the domestic hot water temperature is arranged, which is a switching thermostat connected to the means 9 for blocking the domestic hot water circulation.
  • the means 8 for measuring the temperature of domestic hot water can alternatively be connected to the control unit 7 of the means 9 for blocking domestic hot water circulation.
  • the means 8 for measuring the temperature of domestic hot water can be arranged directly at the last consumption point 3 .
  • the invention For the given house, at an energy price of CZK 8/kWh, the invention represents a saving of CZK 30,600/year.
  • the circulating system for heating domestic hot water can be used for heating domestic hot water in blocks of flats and industrial buildings with at least one distribution circuit of domestic hot water, which contains consumption points.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
EP24020009.7A 2023-01-11 2024-01-08 Zirkulationssystem für haushaltsheisswasser Withdrawn EP4400775A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2023-8A CZ20238A3 (cs) 2023-01-11 2023-01-11 Oběžná soustava pro ohřev užitkové vody

Publications (1)

Publication Number Publication Date
EP4400775A1 true EP4400775A1 (de) 2024-07-17

Family

ID=89535895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24020009.7A Withdrawn EP4400775A1 (de) 2023-01-11 2024-01-08 Zirkulationssystem für haushaltsheisswasser

Country Status (2)

Country Link
EP (1) EP4400775A1 (de)
CZ (1) CZ20238A3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS205823B1 (cs) 1979-03-19 1981-05-29 Josef Krminsky Ústřední rozvod teplé užitkové vody
EP0249070A2 (de) * 1986-06-07 1987-12-16 DEUTSCHE VORTEX GmbH Vorrichtung zur Regelung der Zirkulation in einem temperaturbeaufschlagten, Entnahmestellen aufweisenden Medienkreislauf
WO2005071322A1 (en) * 2004-01-24 2005-08-04 Arie Kroon System and method for heating tap water
KR20130126299A (ko) * 2012-05-11 2013-11-20 주식회사 경동원 사용자의 온수 사용 패턴에 따른 온수기의 온수 예열 제어방법
WO2022197272A1 (en) * 2021-03-16 2022-09-22 Keskin Ali Hot water saving system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330963A1 (fr) * 1975-11-04 1977-06-03 Saunier Duval Dispositif de recyclage d'eau chaude sanitaire associable a un generateur individuel
JP2008241130A (ja) * 2007-03-27 2008-10-09 Rui-Zong Huang 熱水供給システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS205823B1 (cs) 1979-03-19 1981-05-29 Josef Krminsky Ústřední rozvod teplé užitkové vody
EP0249070A2 (de) * 1986-06-07 1987-12-16 DEUTSCHE VORTEX GmbH Vorrichtung zur Regelung der Zirkulation in einem temperaturbeaufschlagten, Entnahmestellen aufweisenden Medienkreislauf
WO2005071322A1 (en) * 2004-01-24 2005-08-04 Arie Kroon System and method for heating tap water
KR20130126299A (ko) * 2012-05-11 2013-11-20 주식회사 경동원 사용자의 온수 사용 패턴에 따른 온수기의 온수 예열 제어방법
WO2022197272A1 (en) * 2021-03-16 2022-09-22 Keskin Ali Hot water saving system

Also Published As

Publication number Publication date
CZ309979B6 (cs) 2024-03-27
CZ20238A3 (cs) 2024-03-27

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