SE2051338A1 - Hot water circulation system and method for operating the same - Google Patents

Hot water circulation system and method for operating the same

Info

Publication number
SE2051338A1
SE2051338A1 SE2051338A SE2051338A SE2051338A1 SE 2051338 A1 SE2051338 A1 SE 2051338A1 SE 2051338 A SE2051338 A SE 2051338A SE 2051338 A SE2051338 A SE 2051338A SE 2051338 A1 SE2051338 A1 SE 2051338A1
Authority
SE
Sweden
Prior art keywords
water
circulation
conduit
heat exchanger
heat
Prior art date
Application number
SE2051338A
Other languages
Swedish (sv)
Other versions
SE544546C2 (en
Inventor
Willy Ossiansson
Original Assignee
Energybooster Ab
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 Energybooster Ab filed Critical Energybooster Ab
Priority to SE2051338A priority Critical patent/SE544546C2/en
Priority to PCT/SE2021/051147 priority patent/WO2022103323A1/en
Priority to EP21892441.3A priority patent/EP4244539A4/en
Publication of SE2051338A1 publication Critical patent/SE2051338A1/en
Publication of SE544546C2 publication Critical patent/SE544546C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • 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
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
    • 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
    • F24D17/0026—Domestic hot-water supply systems with conventional heating means
    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0089—Additional heating means, e.g. electric heated buffer tanks or electric continuous flow heaters, located close to the consumer, e.g. directly before the water taps in bathrooms, in domestic hot water lines
    • 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
    • F24D17/02—Domestic hot-water supply systems using heat 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
    • 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
    • F24D3/18—Hot-water central heating systems using heat pumps
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/156—Reducing the quantity of energy consumed; Increasing efficiency
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • 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
    • F24H15/325—Control of valves of by-pass valves
    • 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
    • E03B7/045—Domestic or like local pipe systems diverting initially cold water in warm 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
    • 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
    • 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
    • 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
    • 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
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Control For Baths (AREA)

Abstract

Hot water circulation system (200) for a building, said system comprisinga hot tap water circulation circuit (210);a circulation pump (211);water taps (220-224);a cold water inlet (240) to said circulation circuit;a heat exchanger (230), arranged to heat the water using an externally provided heat medium;a first conduit (213), leading a first share of water from said pump to said taps via said heat exchanger;a temperature sensor (251), arranged downstream of said heat exchanger; and a control device (250), arranged to control a flow of said heat medium.The invention is characterised in that the circulation circuit comprises a second conduit (214), leading a second share of water from said pump to said taps in parallel to said first conduit,in that the first share is at least smaller than said second share as long as no cold water is provided to the circulation circuit, andin that the circulation system further comprises a heat pump (260), heating the water.The invention also relates to a method.

Claims (15)

1. 1. Hot water circulation system (200), arranged to circulate hot tap water in at leastone building, said system comprising a hot tap water circulation circuit (210); a circulation pump (211), arranged to circulate water in said circulation circuit (210); a plurality of water taps (220;221;222;223;224) arranged for tapping water from saidcirculation circuit (210); a cold water inlet (240), arranged to supply cold water to said circulation circuit (210); a heat exchanger (230), arranged to heat water being circulated in said circulation circuit(210) using an externally provided heat medium flowing past said heat exchanger (230); a first conduit (213) of said circulation circuit (210), arranged to lead a first share of saidwater from said circulation pump (211) to said plurality of water taps(220;221;222;223;224) via said heat exchanger (230), whereby the water flowing throughsaid first conduit (213) thermally interacts with said heat exchanger (230); a temperature sensor (251), arranged to measure a temperature of water flowing throughsaid first conduit (213), downstream of said heat exchanger (230); and a control device (250), arranged to control a flow of said externally provided heat mediumthrough said heat exchanger (230),c h a r a c t e r i s e d i n that the circulation circuit (210) comprises a secondconduit (214), arranged to lead a second share of said water from said circulation pump(211) to said plurality of water taps (220;221;222;223;224) in parallel to said first conduit(213) without the water thermally interacting with said heat exchanger (230), in that the first share is at least smaller than said second share as long as no cold water isprovided to the circulation circuit (210) via said cold water inlet (240), and in that the circulation system (200) further comprises a heat pump (260), arranged to heat the water circulated in said circulation circuit (210).
2. Hot water circulation system (200) according to claim 1, wherein said heat medium is provided from a district heating system.
3. Application text 2020-11-16 2000S4SE3. Hot water circulation system (200) according to claim 1 or 2, wherein said cold water inlet (240) is arranged to supply said cold water to said first conduit (213).
4. Hot water circulation system (200) according to any one of the preceding claims,wherein the circulation circuit (210) is pressurized by said cold water inlet (240), which is connected without interruption to said circulation circuit (210).
5. Hot water circulation system (200) according to any one of the preceding claims, wherein said first conduit (213) comprises a flow reducing valve (212).
6. Hot water circulation system (200) according to any one of the preceding claims,wherein the control device (250) is arranged to control said flow ofthe externally providedheat medium through said heat exchanger (230) by controlling a flow valve (252) based on said temperature read by said temperature sensor (251).
7. Hot water circulation system (200) according to any one of the preceding claims,wherein the control device (250) is arranged to control said flow ofthe externally providedheat medium through said heat exchanger (230) so that said flow is decreased or stoppedwhen the temperature read by said temperature sensor (251) is equal to or above a temperature setpoint.
8. Hot water circulation system (200) according to any one of the preceding claims,wherein the circulation pump (211) is arranged along a main conduit (215) of the circula-tion circuit (210), said main conduit (215) being part neither of said first conduit (213) nor said second conduit (214).
9. Hot water circulation system (200) according to any one of the preceding claims,wherein the heat pump (260) is arranged along a main conduit (215) of the circulationcircuit (210), said main conduit (215) being part neither of said first conduit (213) nor said second conduit (214).
10. Application text 2020-11-16 2000S4SE10. Hot water circulation system (200) according to any one of the preceding claims,wherein the heat pump (260) is a gas-to-liquid heat pump, arranged to heat said water using thermal energy from air surrounding the heat pump (260).
11. Hot water circulation system (200) according to any one of the preceding claims,wherein the heat pump (260) is arranged in a closed space (270), and in that said heat exchanger (230) is also arranged in said closed space (270).
12. Hot water circulation system (200) according to claim 11, wherein the closed space(270) also comprises electric equipment (271) used to operated said building and emitting heat.
13. Method for operating a hot water circulation system (200), said circulation system(200) being arranged to circulate hot tap water in at least one building and comprising a hot tap water circulation circuit (210); a circulation pump (211), arranged to circulate water in said circulation circuit (210); a plurality of water taps (220;221;222;223;224) arranged for tapping water from saidcirculation circuit (210); a cold water inlet (240), arranged to supply cold water to said circulation circuit (210); a heat exchanger (230), arranged to heat water being circulated in said circulation circuit(210) using an externally provided heat medium flowing past said heat exchanger (230); a first conduit (213) of said circulation circuit (210), arranged to lead a first share of saidwater from said circulation pump (211) to said plurality of water taps(220;221;222;223;224) via said heat exchanger (230), whereby the water flowing throughsaid first conduit (213) thermally interacts with said heat exchanger (230); a temperature sensor (251), arranged to measure a temperature of water flowing throughsaid first conduit (213), downstream of said heat exchanger (230); and a control device (250), arranged to control a flow of said externally provided heat mediumthrough said heat exchanger (230), c h a r a c t e r i s e d in that the method comprisesin a first state of the circulation system (200), in which all of said water taps(220;221;222;223;224) are closed, circulating a second share of said water in a second Application text 2020-11-16 2000S4SE conduit (214), from said circulation pump (211) to said plurality of water taps(220;221;222;223;224) in parallel to said first conduit (213) without the water thermallyinteracting with said heat exchanger (230), said first share being at least smaller than saidsecond share, and heating the water circulated in said circulation circuit (210) using a heatpump (260) comprised in said circulation system (200); and in a second state of the circulation system (200), in which at least one of said water taps(220;221;222;223;224) is open, replenishing the circulation circuit (210) using cold water from said cold water inlet (240).
14. Method according to claim 13, wherein, in said first state, the control device (250)reads a measured temperature from the temperature sensor (251) and determines thatthe read temperature is equal to or above a temperature setpoint, and as a result de-creases or stops a flow of said externally provided heat medium past said heat exchanger (230).
15. Method according to claim 13 or 14, wherein, in said second state, the controldevice (250) reads a measured temperature from the temperature sensor (251) anddetermines that the read temperature, due to the addition of said cold water, is below atemperature setpoint, and as a result increases a flow of said externally provided heat medium past said heat exchanger (230). Application text 2020-11-16 2000S4SE
SE2051338A 2020-11-16 2020-11-16 Hot water circulation system and method for operating the same SE544546C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE2051338A SE544546C2 (en) 2020-11-16 2020-11-16 Hot water circulation system and method for operating the same
PCT/SE2021/051147 WO2022103323A1 (en) 2020-11-16 2021-11-16 Hot water circulation system and method for operating the same
EP21892441.3A EP4244539A4 (en) 2020-11-16 2021-11-16 Hot water circulation system and method for operating the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2051338A SE544546C2 (en) 2020-11-16 2020-11-16 Hot water circulation system and method for operating the same

Publications (2)

Publication Number Publication Date
SE2051338A1 true SE2051338A1 (en) 2022-05-17
SE544546C2 SE544546C2 (en) 2022-07-12

Family

ID=81602603

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2051338A SE544546C2 (en) 2020-11-16 2020-11-16 Hot water circulation system and method for operating the same

Country Status (3)

Country Link
EP (1) EP4244539A4 (en)
SE (1) SE544546C2 (en)
WO (1) WO2022103323A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115435511A (en) * 2022-08-11 2022-12-06 浏阳市化工厂有限公司 Electrolysis waste heat intensification utilizes equipment

Citations (11)

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JPH04260731A (en) * 1991-02-14 1992-09-16 Kajima Corp Instant water heater of double-heating source type
JPH04260749A (en) * 1991-02-15 1992-09-16 Paloma Ind Ltd Instantaneous hot water supply device
JPH09243174A (en) * 1996-03-13 1997-09-16 Mitsubishi Electric Corp Storage type hot-water feed system
JP2004125228A (en) * 2002-09-30 2004-04-22 Sekisui Chem Co Ltd Water heater
DE102005036882A1 (en) * 2005-08-02 2007-02-22 Reinhold Herrmann Hot water preparation system, has controller connected with temperature sensor in hot water circuit and with control valve, and designed, such that valve is controlled within shortest time depending on values at temperature sensor
US20090180768A1 (en) * 2008-01-11 2009-07-16 Lyndal Moore Method and system for recirculating hot water
JP2010210179A (en) * 2009-03-11 2010-09-24 Rinnai Corp Hot water supply system
JP2013015263A (en) * 2011-07-04 2013-01-24 Tokyo Gas Co Ltd Hot water supply system
WO2016029067A1 (en) * 2014-08-20 2016-02-25 Intellihot Green Technologies, Inc. Combined hot water and air heating and conditioning system including heat pump
CN210373667U (en) * 2019-06-22 2020-04-21 上海岭北冷暖设备工程有限公司 Ground heating and hot water circulating system combining air energy with natural gas wall-mounted boiler
US20200271356A1 (en) * 2019-02-26 2020-08-27 Noritz Corporation Water heating apparatus with immediate hot water supply function and water heating system

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FR2936042A1 (en) * 2008-09-17 2010-03-19 Heliopac Energy loss controlling and Legionella bacteria proliferation avoiding method for e.g. boarding school, involves reducing water temperature in short-circuited hot water distribution loop circuit below threshold temperature
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DE202014103193U1 (en) * 2014-07-11 2015-07-15 Better Place GmbH Circulation line for cold water
JP2017182939A (en) * 2016-03-29 2017-10-05 三浦工業株式会社 Fuel cell system
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Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04260731A (en) * 1991-02-14 1992-09-16 Kajima Corp Instant water heater of double-heating source type
JPH04260749A (en) * 1991-02-15 1992-09-16 Paloma Ind Ltd Instantaneous hot water supply device
JPH09243174A (en) * 1996-03-13 1997-09-16 Mitsubishi Electric Corp Storage type hot-water feed system
JP2004125228A (en) * 2002-09-30 2004-04-22 Sekisui Chem Co Ltd Water heater
DE102005036882A1 (en) * 2005-08-02 2007-02-22 Reinhold Herrmann Hot water preparation system, has controller connected with temperature sensor in hot water circuit and with control valve, and designed, such that valve is controlled within shortest time depending on values at temperature sensor
US20090180768A1 (en) * 2008-01-11 2009-07-16 Lyndal Moore Method and system for recirculating hot water
JP2010210179A (en) * 2009-03-11 2010-09-24 Rinnai Corp Hot water supply system
JP2013015263A (en) * 2011-07-04 2013-01-24 Tokyo Gas Co Ltd Hot water supply system
WO2016029067A1 (en) * 2014-08-20 2016-02-25 Intellihot Green Technologies, Inc. Combined hot water and air heating and conditioning system including heat pump
US20200271356A1 (en) * 2019-02-26 2020-08-27 Noritz Corporation Water heating apparatus with immediate hot water supply function and water heating system
CN210373667U (en) * 2019-06-22 2020-04-21 上海岭北冷暖设备工程有限公司 Ground heating and hot water circulating system combining air energy with natural gas wall-mounted boiler

Also Published As

Publication number Publication date
EP4244539A4 (en) 2024-05-01
WO2022103323A1 (en) 2022-05-19
SE544546C2 (en) 2022-07-12
EP4244539A1 (en) 2023-09-20

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