WO2018137726A1 - A combined system of service water heating and a heating medium for domestic heating - Google Patents

A combined system of service water heating and a heating medium for domestic heating Download PDF

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Publication number
WO2018137726A1
WO2018137726A1 PCT/CZ2018/000004 CZ2018000004W WO2018137726A1 WO 2018137726 A1 WO2018137726 A1 WO 2018137726A1 CZ 2018000004 W CZ2018000004 W CZ 2018000004W WO 2018137726 A1 WO2018137726 A1 WO 2018137726A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
service water
circuit
domestic
heat
Prior art date
Application number
PCT/CZ2018/000004
Other languages
French (fr)
Inventor
Marko WASCHER
Erik LIEBAU
Original Assignee
Almeva Ag
ALMEVA EAST EUROPE s.r.o.
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
Priority to ATGM9001/2018U priority Critical patent/AT16648U1/en
Application filed by Almeva Ag, ALMEVA EAST EUROPE s.r.o. filed Critical Almeva Ag
Priority to ROU201900024U priority patent/RO201900024U1/en
Priority to PL430685A priority patent/PL430685A1/en
Priority to ES201990012U priority patent/ES1236019Y/en
Priority to TR2019/10805U priority patent/TR201910805U5/en
Priority to RU2019125623U priority patent/RU198390U1/en
Priority to PL130450U priority patent/PL130450U1/en
Priority to FIU20194103 priority patent/FI12519U1/en
Priority to DE212018000133.2U priority patent/DE212018000133U1/en
Priority to UAU201908427U priority patent/UA140713U/en
Publication of WO2018137726A1 publication Critical patent/WO2018137726A1/en
Priority to BG4413U priority patent/BG3459U1/en
Priority to DKBA201900071U priority patent/DK201900071Y3/en

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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
    • 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
    • F24D19/1075—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses solar energy
    • 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
    • F24D12/00—Other central heating systems
    • F24D12/02—Other central heating systems having more than one heat source
    • 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
    • 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
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F24D3/082—Hot water storage tanks specially adapted therefor
    • 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
    • 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
    • F24D2200/32—Heat sources or energy sources involving multiple heat sources in combination or as alternative heat sources
    • 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
    • F24D2220/0235—Three-way-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
    • F24D2220/042—Temperature sensors
    • 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
    • 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
    • F24D2220/08—Storage tanks
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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]

Definitions

  • the invention concerns a combined service water heating system and heating medium for domestic heating, comprising at least two independent heating medium sources, such as a boiler unit (stationary boiler) and/or a solar panel system, or a heat pump and the like, by means of primary circuits connected in parallel to the combined system by means of heat exchangers, in particular plate-type, and at least two in parallel connected circuits collecting heat from the heating medium, on one hand for the domestic heating system and on the other hand, for the heating of the service water with the interface through its own heat exchanger.
  • independent heating medium sources such as a boiler unit (stationary boiler) and/or a solar panel system, or a heat pump and the like
  • heat exchangers in particular plate-type
  • Embodiments of heating systems or systems using thermal energy from a combustion boiler, both for heating the living quarters of a dwelling and for heating (sanitary) utility water for use, for example for showers, baths, etc., is known from the known state of the art.
  • Such heating systems comprise a primary heat exchanger mounted against the boiler, through which a heat exchange fluid, typically water, flows, which circulates through the radiators in the heated rooms due to the pressure of the respective circulation pump.
  • a heat exchange fluid typically water
  • a flow switching three-way valve is generally provided on the outlet pipe of the heating medium from the boiler to enable hot fluid of the secondary heat exchanger to be used as an alternative to the radiators.
  • This secondary heat exchanger enables heating of the service water for its distribution to dwelling sanitary accessories by removing heat directly from the heating medium of the heating system and thus utilizing the boiler's thermal energy.
  • the three-way flow switching valve in the known systems is not able to differentially distribute the hot heating medium flow between the radiator circuit and the secondary heat exchanger circuit.
  • the said valve is controlled by binary logic and it may have only two extreme positions, i.e. one for supplying the radiators in case hot service water is not required at the same time by the domestic users, and one for supplying the secondary heat exchanger if the service water is required.
  • the switch command for the valve is issued by the appropriate control means when the minimum flow sensor, attached to the sanitary water pipe detects a certain demand for heated service or sanitary water, for example 2.5 1/m.
  • This type of heating system allows one to use the boiler's thermal energy for dual purpose, both for domestic heating and domestic hot service water, but on the other hand it often causes significant energy losses. If there is a minimum demand for domestic water, heating of the radiators in the dwelling is usually stopped as well, so that all and excess heat is used to heat only a small amount of water. It is a general object of the present invention to overcome the aforementioned drawbacks of a known arrangement of heating flow control devices in combined heating units for sanitary or primary service water for living rooms and indirect heating of fresh water by creating a combined system that simplifies on-site installation while maximizing energy savings with the best possible technology and control. Summary of the invention
  • a combined system for heating fresh water and a heating medium for domestic heating comprising at least two independent sources of heating medium such as a boiler unit and/or solar panel system or heat pump and the like, by means of primary circuits connected in parallel to the combined system by means of a plate heat exchanger and parallel connected circuits collecting the heat from the heating medium, both for the heating domestic system and for the heating of the service water with an interface through the own heat exchanger, while the said parallel circuits, including their backflow sections, are interconnected via plate heat exchangers to concentrate in the combined system block and are mutually variously interchangeable, in particular depending on the different levels of achieved temperatures of at least two stratified layers of heating media in an external heat storage tank, connected in parallel by means of a differential connection of a three-way valve group with inputs/outputs to circuits, preferably through the input/output in the external tank for the domestic heating circuit and through the input/output in the external tank for heating of service water, primarily to the heating circuit of the service water from
  • the external tank contains inputs/outputs connected to a layer with a low level of heating medium temperature and connected to a domestic hot service water circuit or a domestic heating circuit through a three-way valve and a mixing three-way valve, minimizing the input heat energy and minimizing the heat losses.
  • the domestic service water heating circuit is provided with a flow switch for activating the priority flow of heating medium from the external tank and outlet through the mixing valves on the branch of the circuit, with the connection of its own plate heat exchanger with selection of connection to the upper layers of the heating media in the external tank.
  • a combined domestic water heating system and heating medium for domestic heating comprises at least two independent heating medium sources, such as a boiler unit 1 and/or a solar panel system, 12 or a heat pump and the like, by means of primary circuits 24, 25 connected in parallel to the combined system 21 by means of a plate heat exchanger 22, and circuits collecting heat from the heating medium connected in parallel, on one hand for the domestic heating system circuit 1 1 and on the other hand the circuit 23 for the heating of the service water with the interface through its own heat exchanger 8.
  • independent heating medium sources such as a boiler unit 1 and/or a solar panel system, 12 or a heat pump and the like
  • the said parallel circuits 23. 1 L 24, 25, including their backflow sections, are interconnected via plate heat exchangers 8, 22 to concentrate in the combined system block 21 and are mutually variously switchable, in particular depending on the different levels of achieved temperatures of at least two stratified layers of heating media in the external heat storage tank 20, connected in parallel by means of a differential connection of a three-way valve group 16, 17, 18, 19 with inputs/outputs to circuits 23, 11, 24, 25, preferably through the input/output 27 in the external tank 20 for the domestic heating circuit 11 and through the input/output 26 in the external tank 20 for heating of service water, primarily to the heating circuit 23 of the service water from the top layer of the heating medium by means of mixing three- way valves 17, 7 for differential switching either to a service water heating circuit 23 not exceeding 55° C, or to a domestic heating circuit 11 with a temperature even above 55° C.
  • the external tank 20 contains inputs/outputs 28, 29 connected to a layer with a low level of heating medium temperature and connected through a three- way valve 18, 19 and a mixing three-way valve 5 to a domestic hot service water circuit 23 or a domestic heating circuit H minimizing the input heat energy and minimizing the heat losses.
  • the service water heating circuit 23 contains a flow switch 9 for activating the priority flow of heating medium from the external tank 20 and outlet 26 through the mixing valves 5, 7 to its own plate heat exchanger 8 with request for consumption of the service water.
  • the mixing valve 5 with electronically controlled and superfast reacting setting drive brings by means of pump 6 in circuit 23 for service water heating the preheated heating medium via the input/output 26 from the external tank 20, while the heating medium is kept under 50° C in the direction of the heat exchanger 8 to prevent calcification of the stainless-steel plates in this heat exchanger 8, when calcium deposition occurs below 55" C.
  • the temperature of the service water is measured by a fast-reacting sensor 9, and it is set to the required output temperature, using electronically controlled mixing controller, for example with a three-way valve 7, after the plate exchanger 8. This also prevents temperature fluctuations of service water in the circuit 23.
  • the indicated heating of the service water commences when the sensor 9 or other sensor with built-in flow sensor registers a demand for consumption of the service water.
  • the eternal part of service water circuit 23 after the heat plate exchanger 8 is optionally equipped with a feedback loop with a circulation pump 10 and measuring sensor S3 of temperature X not exceeding 55°C, while in this part of circuit 23 a hydraulic coupling occurs with a minimum amount of service water that effectively prevents multiplication of legionella in the service water, while the respective inlets are preassembled in the system.
  • the service water circulation pump 10 can be supplied on request. Then the hydraulic coupling, as shown in the diagram, will occur. The respective inlets are preassembled.
  • Sensor S3 measures the circulation temperature of the backwater in this feedback loop and switches off the circulation pump 10 of the service water there after the heated service water starts circulating again in the main circuit 23 using the method described above to save energy.
  • the same electronically controlled mixing circuit is used as in the preparation of service water.
  • the direction of flow of the heating medium is switched via a three-way valve 7, wherein measuring of the inflowing heating media temperature and its control is performed using sensor SI .
  • the heating medium is taken off via input/output 27 to retain the high temperatures above this input/output 27 of the external tank 20 for heating of the service water from the input/output 26.
  • the volume flow of the circulation pump 6 may be adjusted using a speed controller to prevent creation of noise in the system of this mixing circuit, or in circuit 1 1 for domestic heating and to save electric power at the same time.
  • the heat transfer from the antifreeze medium leading from collectors 12 to the heating medium leading to the external tank 20 is performed via the plate heat exchanger 22 because of its much larger heat exchanging surface than a usual pipe heat exchanger built in the tank, that is used in connection with the normal solar panels. Perfect stratification of heat in tank 20 is performed through valve 16 in the direction of input/output 26 or 27. because in the collector 12 very different temperatures occur.
  • the volume flow of the circulation pumps 13 . and 14 is controlled by controller L5 to ensure optimum and uniform heat collection from collector 12. Measurement and evaluation of amount of heat is done by regulator 15 using the volume flow sensor.
  • Controlled demand for required heat amount by a non-domestic heat source such as from a boiler unit 1 burning for instance oil, gas or a heat pump is realized by a non-illustrated regulator such as a space thermostat.
  • Heat sources not controlled by the system may be connected to the external tank 20 through inputs/Outputs 26, 29.
  • auxiliary heat exchanger For gas baths, wall-suspended heaters and divided heat pumps it is recommended to assign an auxiliary heat exchanger to these unregulated heat sources, while, to prevent short or transversal flow through such heat exchanger, an auxiliary vaive 4 is usually required.
  • the heated heating medium enters through the switching valve 17 into the layer of the external tank 20 calculated by the controller, through inputs/outputs 26 or 27.
  • the temperature of the heated heating medium from these sources is checked by a non-illustrated sensor and is removed, for example, by a circulation pump controlled by the volume flow.
  • the tree-way valve 16 switcnes at the temperature measured by sensor S4, while the collector 12 produces the energy to the external tank 20 by means of inputs/outputs 26, 27 at the external tank 20,
  • the three-way valve 17 switches during production of hot service water by means of FriWa and/or during filling of the external tank 20 blurup" with the boiler unit 1 in the direction of input/output 26, - the three-way valve 17 switches in the external tank 20 to the position of input/output 27, if the domestic heat distribution system (FBH, radiators etc.) and/or boiler unit 1 must maintain the required input temperature at sensor Sd ,
  • the three-way valve 18 switches during filling the external tank 20 by the boiler unit 1 in the direction to the input/output 27 ,,up", to prevent unnecessary washing" of the external tank 20,
  • the three-way valve 18 switches to the position of input/output 28 in the external tank 20 if the domestic heat distribution system (FBH, radiators etc.) and/or boiler unit (I) must maintain the required input temperature at sensor S i in the external tank 20 at me level of input/output 17 to prevent unnecessary structuricharging" of tne external tank 20, the three-wax valve IS switches to the position at the level of input/output 29 of the external tank 20, if the temperature of the backflow heating medium of ail mixing circuits in the system 21 is measured to be cooler than on the boiler unit 1 , and does not produce any heat at the level of input/output 28 of the external tank 20.
  • the domestic heat distribution system BH, radiators etc.
  • boiler unit (I) must maintain the required input temperature at sensor S i in the external tank 20 at me level of input/output 17 to prevent unnecessary structuricharging" of tne external tank 20
  • the three-wax valve IS switches to the position at the level of input/output 29 of the external tank

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

A combined system (21) of service water heating and heating medium for domestic heating comprises at least two independent heating medium sources, such as a boiler unit (1) and/or a solar panel system (12) or a heat pump and the like, by means of primary circuits (24, 25) connected in parallel to the combined system (21) by means of a plate heat exchanger (22), and in parallel connected circuits collecting heat from the heating medium, on one hand for the domestic heating system circuit ( 1 1) and on the other hand, the circuit (23) for heating of service water with the interface through its own heat exchanger (8), while the said parallel circuits (23, I I, 24, 25 ), including their backflow sections, are interconnected via plate heat exchangers (8, 22) to concentrate in the combined system block (21 ) and are mutually variously switchable, in particular depending on the different levels of achieved temperatures of at least two stratified layers of heating media in an external heat storage tank (20), connected in parallel by means of a differential connection of a three- way valve group (16, 17, 18, 19) with inputs/outputs to circuits (23, 1 1, 24, 25), preferably through the input/output (27) in the external tank (20) for the domestic heating circuit (1 1 ) and through the input/output (26) in the external tank (20) for heating of service water, primarily to the heating circuit (23) of the service water from the top layer of the heating medium by means of mixing three-way valves (17, 7) for differential switching either to a service water Heating circuit (23) not exceeding 55^ C, or to a domestic heating circuit (1 1) with a temperature even above 55° C.

Description

A combined system of service water heating and a heating medium for domestic heating
Field of the invention
The invention concerns a combined service water heating system and heating medium for domestic heating, comprising at least two independent heating medium sources, such as a boiler unit (stationary boiler) and/or a solar panel system, or a heat pump and the like, by means of primary circuits connected in parallel to the combined system by means of heat exchangers, in particular plate-type, and at least two in parallel connected circuits collecting heat from the heating medium, on one hand for the domestic heating system and on the other hand, for the heating of the service water with the interface through its own heat exchanger.
State of the art
Embodiments of heating systems or systems using thermal energy from a combustion boiler, both for heating the living quarters of a dwelling and for heating (sanitary) utility water for use, for example for showers, baths, etc., is known from the known state of the art.
Such heating systems comprise a primary heat exchanger mounted against the boiler, through which a heat exchange fluid, typically water, flows, which circulates through the radiators in the heated rooms due to the pressure of the respective circulation pump.
A flow switching three-way valve is generally provided on the outlet pipe of the heating medium from the boiler to enable hot fluid of the secondary heat exchanger to be used as an alternative to the radiators. This secondary heat exchanger enables heating of the service water for its distribution to dwelling sanitary accessories by removing heat directly from the heating medium of the heating system and thus utilizing the boiler's thermal energy.
However, the three-way flow switching valve in the known systems is not able to differentially distribute the hot heating medium flow between the radiator circuit and the secondary heat exchanger circuit. The said valve is controlled by binary logic and it may have only two extreme positions, i.e. one for supplying the radiators in case hot service water is not required at the same time by the domestic users, and one for supplying the secondary heat exchanger if the service water is required. The switch command for the valve is issued by the appropriate control means when the minimum flow sensor, attached to the sanitary water pipe detects a certain demand for heated service or sanitary water, for example 2.5 1/m.
This type of heating system allows one to use the boiler's thermal energy for dual purpose, both for domestic heating and domestic hot service water, but on the other hand it often causes significant energy losses. If there is a minimum demand for domestic water, heating of the radiators in the dwelling is usually stopped as well, so that all and excess heat is used to heat only a small amount of water. it is a general object of the present invention to overcome the aforementioned drawbacks of a known arrangement of heating flow control devices in combined heating units for sanitary or primary service water for living rooms and indirect heating of fresh water by creating a combined system that simplifies on-site installation while maximizing energy savings with the best possible technology and control. Summary of the invention
According to the invention, the objectives and effects are achieved by a combined system for heating fresh water and a heating medium for domestic heating comprising at least two independent sources of heating medium such as a boiler unit and/or solar panel system or heat pump and the like, by means of primary circuits connected in parallel to the combined system by means of a plate heat exchanger and parallel connected circuits collecting the heat from the heating medium, both for the heating domestic system and for the heating of the service water with an interface through the own heat exchanger, while the said parallel circuits, including their backflow sections, are interconnected via plate heat exchangers to concentrate in the combined system block and are mutually variously interchangeable, in particular depending on the different levels of achieved temperatures of at least two stratified layers of heating media in an external heat storage tank, connected in parallel by means of a differential connection of a three-way valve group with inputs/outputs to circuits, preferably through the input/output in the external tank for the domestic heating circuit and through the input/output in the external tank for heating of service water, primarily to the heating circuit of the service water from the top layer of the heating medium by means of mixing three-way valves for differential switching either to a service water heating circuit not exceeding 55° C or to a domestic heating circuit with a temperature even above 55° C.
According to the invention it appears that the external tank contains inputs/outputs connected to a layer with a low level of heating medium temperature and connected to a domestic hot service water circuit or a domestic heating circuit through a three-way valve and a mixing three-way valve, minimizing the input heat energy and minimizing the heat losses. Preferably, when requesting fast heating of service water, the domestic service water heating circuit is provided with a flow switch for activating the priority flow of heating medium from the external tank and outlet through the mixing valves on the branch of the circuit, with the connection of its own plate heat exchanger with selection of connection to the upper layers of the heating media in the external tank.
Overview of figures on drawings
Further advantages and features of the present invention are further apparent from the drawing where the only illustration is a schematic block arrangement of a combined heating system for domestic water and a heating medium for domestic heating.
Example of invention embodiments
A combined domestic water heating system and heating medium for domestic heating comprises at least two independent heating medium sources, such as a boiler unit 1 and/or a solar panel system, 12 or a heat pump and the like, by means of primary circuits 24, 25 connected in parallel to the combined system 21 by means of a plate heat exchanger 22, and circuits collecting heat from the heating medium connected in parallel, on one hand for the domestic heating system circuit 1 1 and on the other hand the circuit 23 for the heating of the service water with the interface through its own heat exchanger 8.
The said parallel circuits 23. 1 L 24, 25, including their backflow sections, are interconnected via plate heat exchangers 8, 22 to concentrate in the combined system block 21 and are mutually variously switchable, in particular depending on the different levels of achieved temperatures of at least two stratified layers of heating media in the external heat storage tank 20, connected in parallel by means of a differential connection of a three-way valve group 16, 17, 18, 19 with inputs/outputs to circuits 23, 11, 24, 25, preferably through the input/output 27 in the external tank 20 for the domestic heating circuit 11 and through the input/output 26 in the external tank 20 for heating of service water, primarily to the heating circuit 23 of the service water from the top layer of the heating medium by means of mixing three- way valves 17, 7 for differential switching either to a service water heating circuit 23 not exceeding 55° C, or to a domestic heating circuit 11 with a temperature even above 55° C.
The external tank 20 contains inputs/outputs 28, 29 connected to a layer with a low level of heating medium temperature and connected through a three- way valve 18, 19 and a mixing three-way valve 5 to a domestic hot service water circuit 23 or a domestic heating circuit H minimizing the input heat energy and minimizing the heat losses.
The service water heating circuit 23 contains a flow switch 9 for activating the priority flow of heating medium from the external tank 20 and outlet 26 through the mixing valves 5, 7 to its own plate heat exchanger 8 with request for consumption of the service water.
The function of the combined system 21 is different in different stages as follows, whilst it is assumed that a brief sketch of these functions will be clear for the experts in the ait.
Preparation of the service water (FriWa)
The mixing valve 5 with electronically controlled and superfast reacting setting drive brings by means of pump 6 in circuit 23 for service water heating the preheated heating medium via the input/output 26 from the external tank 20, while the heating medium is kept under 50° C in the direction of the heat exchanger 8 to prevent calcification of the stainless-steel plates in this heat exchanger 8, when calcium deposition occurs below 55" C.
The temperature of the service water is measured by a fast-reacting sensor 9, and it is set to the required output temperature, using electronically controlled mixing controller, for example with a three-way valve 7, after the plate exchanger 8. This also prevents temperature fluctuations of service water in the circuit 23. The indicated heating of the service water commences when the sensor 9 or other sensor with built-in flow sensor registers a demand for consumption of the service water. The eternal part of service water circuit 23 after the heat plate exchanger 8 is optionally equipped with a feedback loop with a circulation pump 10 and measuring sensor S3 of temperature X not exceeding 55°C, while in this part of circuit 23 a hydraulic coupling occurs with a minimum amount of service water that effectively prevents multiplication of legionella in the service water, while the respective inlets are preassembled in the system.
The service water circulation pump 10 can be supplied on request. Then the hydraulic coupling, as shown in the diagram, will occur. The respective inlets are preassembled.
Sensor S3 measures the circulation temperature of the backwater in this feedback loop and switches off the circulation pump 10 of the service water there after the heated service water starts circulating again in the main circuit 23 using the method described above to save energy.
Mixing of the heating medium for the domestic heating system
To create the calculated required temperature of the inlet of the heating medium for the radiators/floor heating or the like according to the ambient temperature (or room temperature), the same electronically controlled mixing circuit is used as in the preparation of service water.
The direction of flow of the heating medium is switched via a three-way valve 7, wherein measuring of the inflowing heating media temperature and its control is performed using sensor SI .
The heating medium is taken off via input/output 27 to retain the high temperatures above this input/output 27 of the external tank 20 for heating of the service water from the input/output 26.
The volume flow of the circulation pump 6 may be adjusted using a speed controller to prevent creation of noise in the system of this mixing circuit, or in circuit 1 1 for domestic heating and to save electric power at the same time.
Solar device
The heat transfer from the antifreeze medium leading from collectors 12 to the heating medium leading to the external tank 20 is performed via the plate heat exchanger 22 because of its much larger heat exchanging surface than a usual pipe heat exchanger built in the tank, that is used in connection with the normal solar panels. Perfect stratification of heat in tank 20 is performed through valve 16 in the direction of input/output 26 or 27. because in the collector 12 very different temperatures occur.
The volume flow of the circulation pumps 13. and 14 is controlled by controller L5 to ensure optimum and uniform heat collection from collector 12. Measurement and evaluation of amount of heat is done by regulator 15 using the volume flow sensor.
Heat generator
Controlled demand for required heat amount by a non-domestic heat source such as from a boiler unit 1 burning for instance oil, gas or a heat pump is realized by a non-illustrated regulator such as a space thermostat.
Other automatic heat sources capable of generating discontinuous energy may be directly connected to the external tank 20 with stratification through inputs/outputs 26, 28 and are controlled from the controller via a floating contact.
Heat sources not controlled by the system may be connected to the external tank 20 through inputs/Outputs 26, 29.
For gas baths, wall-suspended heaters and divided heat pumps it is recommended to assign an auxiliary heat exchanger to these unregulated heat sources, while, to prevent short or transversal flow through such heat exchanger, an auxiliary vaive 4 is usually required.
The heated heating medium enters through the switching valve 17 into the layer of the external tank 20 calculated by the controller, through inputs/outputs 26 or 27. The temperature of the heated heating medium from these sources is checked by a non-illustrated sensor and is removed, for example, by a circulation pump controlled by the volume flow.
Stratification in the external tank
- the tree-way valve 16 switcnes at the temperature measured by sensor S4, while the collector 12 produces the energy to the external tank 20 by means of inputs/outputs 26, 27 at the external tank 20,
- the three-way valve 17 switches during production of hot service water by means of FriWa and/or during filling of the external tank 20„up" with the boiler unit 1 in the direction of input/output 26, - the three-way valve 17 switches in the external tank 20 to the position of input/output 27, if the domestic heat distribution system (FBH, radiators etc.) and/or boiler unit 1 must maintain the required input temperature at sensor Sd ,
- the three-way valve 18 switches during filling the external tank 20 by the boiler unit 1 in the direction to the input/output 27 ,,up", to prevent unnecessary„charging" of the external tank 20,
- the three-way valve 18 switches to the position of input/output 28 in the external tank 20 if the domestic heat distribution system (FBH, radiators etc.) and/or boiler unit (I) must maintain the required input temperature at sensor S i in the external tank 20 at me level of input/output 17 to prevent unnecessary„charging" of tne external tank 20, the three-wax valve IS switches to the position at the level of input/output 29 of the external tank 20, if the temperature of the backflow heating medium of ail mixing circuits in the system 21 is measured to be cooler than on the boiler unit 1 , and does not produce any heat at the level of input/output 28 of the external tank 20.

Claims

C L A I M S
1. A combined system (21) of service water heating and heating medium for domestic heating comprises at least two independent heating medium sources, such as a boiler unit (1 ) and/or a solar panel system (12) or a heat pump and the like, by means of primary circuits (24, 25) connected in parallel to the combined system (21) by means of a plate heat exchanger (22), and in parallel connected circuits collecting heat from the heating medium, on one hand for the domestic heating system circuit ( 1 1 ) and on the other hand, the circuit (23) for the heating of service water with the interface through its own heat exchanger (8), characterized in thai the said parallel circuits (23, 1 1, 24, 25), including their backfiow sections, are interconnected via plate heat exchangers (8, 22) to concentrate in the combined system block (21) and are mutually variously switchabie, in particular depending on the different levels of achieved temperatures of at least two stratified layers of heating media in an external heat storage tank (20), connected in parallel by means of a differential connection of a three-way valve group (16, 17, 18, 19) with inputs/ outputs to circuits (23, 1 1 , 24, 25), preferably through the input/output (27) in the external tank (20) for the domestic heating circuit (1 1) and through the input/output (26) in the external tank (20) for heating of service water, primarily to the heating circuit (23) of the service water from the top layer of the heating medium by means of mixing three-way valves ( 17, 7) for differential switching either to a service water heating circuit (23) not exceeding 55° C, or to a domestic heating circuit ( 1 1) with a temperature even above 55° C.
2. A combined system (21 ) according to clahn 1, characterized in that the external tank (20) contains inputs/outputs (28, 29) with connection to layers with low temperature level of the heating medium, and are connected via three-way valve (18, 19) and mixing three-way valve (5) to circuit (23) for heating of service water or to circuit ( 1 1) for domestic heating with minimizing of input heat energies and minimizing of heat losses.
3. A combined system (21) according to claim 1. characterized in that the circuit (23) for heating of service water contains flow switch (9) for activation of preferential flow of the heating media from the external tank (20) and output (26) through the mixing valves (5, 7) into the own plate heat exchanger (8) in case of demand for consumption of service water.
PCT/CZ2018/000004 2017-01-27 2018-01-22 A combined system of service water heating and a heating medium for domestic heating WO2018137726A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
RU2019125623U RU198390U1 (en) 2017-01-27 2018-01-22 COMBINED DEVICE FOR HEATING TECHNICAL WATER AND HEAT CARRIER FOR HEATING RESIDENTIAL PREMISES
ROU201900024U RO201900024U1 (en) 2017-01-27 2018-01-22 A combined system for service water heating and a heating medium for domestic heating
PL430685A PL430685A1 (en) 2017-01-27 2018-01-22 A combined system of service water heating and a heating medium for domestic heating
ES201990012U ES1236019Y (en) 2017-01-27 2018-01-22 A combined service water heating system and heating medium for domestic heating
TR2019/10805U TR201910805U5 (en) 2017-01-27 2018-01-22 A COMBINED SYSTEM OF A HEATING ENVIRONMENT AND DOMESTIC WATER HEATING FOR HOME HEATING
ATGM9001/2018U AT16648U1 (en) 2017-01-27 2018-01-22 Combined system consisting of domestic water heating and a heating medium for home heating
PL130450U PL130450U1 (en) 2017-01-27 2018-01-22 Integrated domestic water heating system and heating medium system for central heating of the house
UAU201908427U UA140713U (en) 2017-01-27 2018-01-22 A combined system of service water heating and a heating medium for domestic heating
DE212018000133.2U DE212018000133U1 (en) 2017-01-27 2018-01-22 Combined system of domestic water heating and a heating medium for domestic heating
FIU20194103 FI12519U1 (en) 2017-01-27 2018-01-22 A combined system of service water heating and a heating medium for domestic heating
BG4413U BG3459U1 (en) 2017-01-27 2019-07-26 Combined system for heating water and fluids for domestic heating
DKBA201900071U DK201900071Y3 (en) 2017-01-27 2019-09-18 Combined system for heating supply water and a heating medium for house heating

Applications Claiming Priority (2)

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CZPUV2017-33353 2017-01-27
CZ2017-33353U CZ31064U1 (en) 2017-01-27 2017-01-27 A combined system of service water heating and a heating medium for domestic heating

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DE (1) DE212018000133U1 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020083409A1 (en) * 2018-10-25 2020-04-30 Almeva Ag Combined system for heating household water and medium for house heating and/or for cooling of heating medium for house cooling
CN111536571A (en) * 2020-04-23 2020-08-14 山东建筑大学 Heat storage and supply system and leakage detection method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017126550A1 (en) * 2017-11-13 2019-05-16 Vaillant Gmbh Heat transfer station
CN111207434B (en) * 2020-01-17 2021-11-16 四川省建筑设计研究院有限公司 Solar energy coupling air source heat pump complementary heating system and control method
DE102020127443A1 (en) 2020-10-19 2022-04-21 Solvis GmbH Air conditioning system for a building

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1039236A2 (en) * 1999-03-23 2000-09-27 Gruppo Imar S.p.A. Storage boiler of the combined type
EP1719959A2 (en) * 1998-04-20 2006-11-08 Sundsvall Energi AB Heat transferring device
DE102005046080A1 (en) * 2005-09-26 2007-04-05 Vertrieb und Großhandel von Heizungs-, Sanitär- und Elektroerzeugnissen Heat generating unit for use with heating devices and hot water supply, comprises two condensing furnaces
DE202007009391U1 (en) * 2007-06-29 2007-09-13 Parabel Gmbh energy Source
WO2009130294A2 (en) * 2008-04-24 2009-10-29 Vkr Holding A/S A device for obtaining heat
WO2010099793A2 (en) * 2009-03-03 2010-09-10 Hans-Georg Baunach Heating system or cooling system and method for operating heating systems or cooling systems
DE202015107108U1 (en) * 2014-12-29 2016-03-10 Palazzetti Lelio S.P.A. Apparatus for producing domestic hot water and for conditioning one or more rooms of a building

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU149505U1 (en) * 2014-05-16 2015-01-10 Сергей Андреевич Андреев AUTONOMOUS HEATING SYSTEM

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1719959A2 (en) * 1998-04-20 2006-11-08 Sundsvall Energi AB Heat transferring device
EP1039236A2 (en) * 1999-03-23 2000-09-27 Gruppo Imar S.p.A. Storage boiler of the combined type
DE102005046080A1 (en) * 2005-09-26 2007-04-05 Vertrieb und Großhandel von Heizungs-, Sanitär- und Elektroerzeugnissen Heat generating unit for use with heating devices and hot water supply, comprises two condensing furnaces
DE202007009391U1 (en) * 2007-06-29 2007-09-13 Parabel Gmbh energy Source
WO2009130294A2 (en) * 2008-04-24 2009-10-29 Vkr Holding A/S A device for obtaining heat
WO2010099793A2 (en) * 2009-03-03 2010-09-10 Hans-Georg Baunach Heating system or cooling system and method for operating heating systems or cooling systems
DE202015107108U1 (en) * 2014-12-29 2016-03-10 Palazzetti Lelio S.P.A. Apparatus for producing domestic hot water and for conditioning one or more rooms of a building

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020083409A1 (en) * 2018-10-25 2020-04-30 Almeva Ag Combined system for heating household water and medium for house heating and/or for cooling of heating medium for house cooling
AT17574U1 (en) * 2018-10-25 2022-07-15 Almeva Ag Combined system for heating domestic water and medium for building heating and/or for cooling heating medium for building cooling
CN111536571A (en) * 2020-04-23 2020-08-14 山东建筑大学 Heat storage and supply system and leakage detection method

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RU198390U1 (en) 2020-07-02
BG3459U1 (en) 2020-01-31
ES1236019Y (en) 2020-01-09
DK201900071U1 (en) 2019-09-23
HU5294U (en) 2021-06-28
TR201910805U5 (en) 2019-08-21
ES1236019U (en) 2019-10-14
UA140713U (en) 2020-03-10
PL130450U1 (en) 2022-10-10
EE01530U1 (en) 2021-04-15
DK201900071Y3 (en) 2019-11-26
PT2018137726Y (en) 2021-03-24
DE212018000133U1 (en) 2019-09-27
SK500612019U1 (en) 2020-01-07
CZ31064U1 (en) 2017-10-03
RO201900024U1 (en) 2020-05-29
FI12519U1 (en) 2019-11-15
SK8779Y1 (en) 2020-06-02
AT16648U1 (en) 2020-04-15

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