EP1148302A2 - Procédé de réglage de la temperature de la prélèvement de l'eau sanitaire - Google Patents

Procédé de réglage de la temperature de la prélèvement de l'eau sanitaire Download PDF

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Publication number
EP1148302A2
EP1148302A2 EP01890113A EP01890113A EP1148302A2 EP 1148302 A2 EP1148302 A2 EP 1148302A2 EP 01890113 A EP01890113 A EP 01890113A EP 01890113 A EP01890113 A EP 01890113A EP 1148302 A2 EP1148302 A2 EP 1148302A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
temperature
speed
controller
pid controller
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
Application number
EP01890113A
Other languages
German (de)
English (en)
Other versions
EP1148302B1 (fr
EP1148302A3 (fr
Inventor
Kurt Fichtenbauer
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.)
Technische Alternative Elektronische Steuerungsgerategesellschaft Mbh
Original Assignee
Technische Alternative Elektronische Steuerungsgerategesellschaft Mbh
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 Technische Alternative Elektronische Steuerungsgerategesellschaft Mbh filed Critical Technische Alternative Elektronische Steuerungsgerategesellschaft Mbh
Publication of EP1148302A2 publication Critical patent/EP1148302A2/fr
Publication of EP1148302A3 publication Critical patent/EP1148302A3/fr
Application granted granted Critical
Publication of EP1148302B1 publication Critical patent/EP1148302B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F24D19/1069—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water regulation in function of the temperature of the domestic hot 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
    • 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
    • F24H15/254—Room 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
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/258—Outdoor 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
    • F24H15/345—Control of fans, e.g. on-off control
    • F24H15/35—Control of the speed of fans

Definitions

  • the invention relates to a method for regulating the removal temperature of domestic water heated on the secondary side in a heat exchanger, which heat exchanger on the primary side in a via a heat source, in particular a buffer memory, leading, with a speed controllable Circulation pump equipped heating circuit is integrated, after the one PID controller the pump drive depending on the comparison of the measured secondary outlet temperature of the heat exchanger as actual value with a controls the specified setpoint.
  • the pump drive control has been continuous from zero to Nominal speed not possible. It is necessary to have a secondary flow, to recognize hot water withdrawal, for which purpose flow switch, differential pressure meter, Water clocks and The like. Serve, and the circulation pump in the primary circuit switch off as long as there is no secondary flow and only switch on when such a flow occurs, i.e. process water is removed. If the circulation pump is switched on, then the regulation takes place the pump drive in a speed range of approx. 30 to 100% of the nominal speed, to the energy input into the heat exchanger for the production of domestic hot water to influence.
  • the invention is therefore based on the object of a method of the beginning Specify the type described, which is a reliable function in a rational manner and sensitive regulation of the tap temperature of service water.
  • the invention solves this problem in that the PID controller with a Controller stage equipped for zero speed and the pump drive via the entire speed range is only controlled as a function of the actual setpoint comparison being, in the case of the speed level zero and a recognizable temperature gradient the outlet temperature of the I part of the PID controller in its Home position is reset.
  • An electronic PID controller comprises three control sections, the proportional section to reinforce the difference between the actual and setpoint, the integral part for Compensate for the control deviation remaining through the proportional part and the Differential part for influencing the reaction of the controller output depending the steepness of the gradient of the actual value.
  • In practice is a regulation up to the speed level zero e.g. B. 5% of the nominal speed understood.
  • the detection of a secondary flow in the heat exchanger and the speed level for the controller Zero introduced so that due to the secondary outlet temperature always measured of the heat exchanger a constant readiness for Domestic hot water delivery exists and also for keeping the Outlet temperature is taken care of. After completion of hot water withdrawal the outlet temperature at the heat exchanger is on the secondary side The setpoint increases, which causes the controller to reduce the pump speed. Here but an increase in the actual value remains without drawing off hot water, the pump drive is finally controlled to zero speed and the circulation pump is stopped.
  • the controller turns the pump speed according to the actual setpoint comparison increase again until the specified temperature is reached, which again leads to a certain increase in the outlet temperature in a row the finite heat transfer rate and the inertia of the temperature measurement leads.
  • the excess of the outlet temperature i.e. the actual value
  • a PID controller recognizes as a control deviation, which makes full use of the integral part, so that the integral part does not because of the possible reduction in speed below zero speed, its negative Lowered the value to the maximum.
  • the outlet temperature quickly drops below the setpoint, but since the integral part has a deep negative value, despite the high differential part of the actual value only very slowly adjusted to the setpoint become. To avoid this, therefore, when a corresponding occurs Gradient of the outlet temperature of the integral part is returned to its basic position, whereby the regulator returns to normal the time required is eliminated. A quick adjustment is therefore when hot water is withdrawn guaranteed.
  • the controller output can also be exceeded when exceeded a temperature threshold that is higher than the setpoint due to the actual value be turned off, preferably the temperature about 1-3 ° C above Setpoint.
  • a temperature threshold that is higher than the setpoint due to the actual value be turned off, preferably the temperature about 1-3 ° C above Setpoint.
  • the actual value increases because of the then the lack of flow slowly, which also increases the pump speed is slowly approaching zero and there is a pump back in the heating circuit hot storage medium in the buffer memory and thus for mixing the lower cold storage medium with the hot storage medium, so a stripping in the buffer tank would come. This is done by switching off the Controller output and thus switching off the circulation pump avoided, if the temperature falls below the temperature threshold again to Switching on the controller or the pump leads.
  • the control behavior can be reduced due to the lower controller and pump dynamics can be improved. You can also reduce the risk of calcification due to the lower temperatures in the heat exchanger.
  • a domestic hot water system 1 comprises a heating circuit 2 with a Buffer memory 3 and a circulation pump 4 controllable in their speed and a process water circuit 5 with a process water inlet 6 and a process water outlet 7, with a heat exchanger 8 on the primary side in the heating circuit 2 and is integrated on the secondary side in the hot water circuit 5 and if necessary Domestic hot water is heated using the instantaneous water heater principle.
  • a PID controller 9 which drives the pump 10 depending on the comparison of the outlet temperature on the secondary side of the heat exchanger 8 is controlled as an actual value with a predetermined target value.
  • a temperature sensor 11 in the outlet area of the process water outlet the heat exchanger 8 reads the corresponding temperature values in the controller 9 a.
  • the pump drive 10 is over the entire speed range of Speed level zero to the nominal speed without detection of a flow controlled by the hot water circuit 5 from the controller 9, so that both a standby state in the heat exchanger 8 also results in the removal temperature the process water can be kept constant within narrow limits Elimination of controller inertia due to the saturation drift of the integral part this integral part at zero speed and at a certain temperature gradient the outlet temperature is reset to the basic position.
  • a thermal mixer 12 can be placed in the heating circuit 2 with a bypass line 13 bridging the buffer store 3 be so that the primary side inlet temperature of the heat exchanger 8 a certain maximum value is limited.

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)
  • Control Of Temperature (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Control Of Combustion (AREA)
  • Control For Baths (AREA)
EP01890113A 2000-04-19 2001-04-12 Procédé de réglage de la temperature de la prélèvement de l'eau sanitaire Expired - Lifetime EP1148302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0069300A AT411632B (de) 2000-04-19 2000-04-19 Verfahren zum regeln der entnahmetemperatur von brauchwasser
AT6932000 2000-04-19

Publications (3)

Publication Number Publication Date
EP1148302A2 true EP1148302A2 (fr) 2001-10-24
EP1148302A3 EP1148302A3 (fr) 2003-01-02
EP1148302B1 EP1148302B1 (fr) 2006-06-14

Family

ID=3679204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890113A Expired - Lifetime EP1148302B1 (fr) 2000-04-19 2001-04-12 Procédé de réglage de la temperature de la prélèvement de l'eau sanitaire

Country Status (3)

Country Link
EP (1) EP1148302B1 (fr)
AT (1) AT411632B (fr)
DE (1) DE50110100D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003023288A1 (fr) * 2001-09-11 2003-03-20 Danfoss A/S Installation de chauffage central
EP1170554A3 (fr) * 2000-07-07 2003-05-07 Solvis GmbH & Co. KG Ensemble et procédé pour préparer de l'eau chaude sanitaire
EP2077423A1 (fr) * 2008-01-02 2009-07-08 Esbe Ab Régulation de la température d'écoulement d'un liquide dans un circuit de chauffage
FR2963087A1 (fr) * 2010-07-26 2012-01-27 Vitherm Appareil de production d'eau chaude sanitaire et procede de fonctionnement d'un tel appareil
DE102019215121A1 (de) * 2019-10-01 2021-04-01 Robert Bosch Gmbh Verfahren zu einer Temperaturregulierung eines Ausgabefluids

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD114701A1 (fr) * 1974-08-14 1975-08-12
FR2354519A1 (fr) * 1976-06-10 1978-01-06 Rapido Dinsing Werk Gmbh Reglage d'une installation de chauffage
GB1603825A (en) * 1977-05-17 1981-12-02 Jones K R Three term (pid) controllers
GB2068596A (en) * 1980-01-24 1981-08-12 Plessey Co Ltd Parameter controller
JPS59203850A (ja) * 1983-05-04 1984-11-19 Diesel Kiki Co Ltd エンジンの回転速度制御装置
JPS60193010A (ja) * 1984-03-14 1985-10-01 Yoshiki Kogyo Kk Ｐｉｄ制御装置
US4734628A (en) * 1986-12-01 1988-03-29 Carrier Corporation Electrically commutated, variable speed compressor control system
CH673697A5 (fr) * 1987-09-22 1990-03-30 Sulzer Ag
AT397426B (de) * 1989-09-08 1994-04-25 Vaillant Gmbh Verfahren und vorrichtung zum bevorraten einer kleinen menge trinkwasser auf ausreichend hohem temperaturniveau
US5036676A (en) * 1990-09-21 1991-08-06 Carrier Corporation Method of compressor current control for variable speed heat pumps
DE4123678C2 (de) * 1991-07-17 1994-01-20 Webasto Ag Fahrzeugtechnik Verfahren zur Regelung einer Heizung für Kraftfahrzeuge
DE4309313A1 (de) * 1993-03-23 1994-09-29 Armin Niederer Verfahren zur Überwachung des Verschmutzungs- und/oder Verkalkungszustandes von Wärmetauschern in Heiz- oder Kühlanlagen
EP0621450A3 (fr) * 1993-04-23 1995-03-22 Georg Lachenmeier Procédé et appareil pour chauffer de l'eau sanitaire.
GB2293438A (en) * 1994-09-20 1996-03-27 Gledhill Water Storage The control of water heating apparatus to prevent scalding
DE19725951A1 (de) * 1997-06-19 1999-01-21 Bosch Gmbh Robert Verfahren zur Brauchwasserbereitstellung in einem kombinierten System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1170554A3 (fr) * 2000-07-07 2003-05-07 Solvis GmbH & Co. KG Ensemble et procédé pour préparer de l'eau chaude sanitaire
WO2003023288A1 (fr) * 2001-09-11 2003-03-20 Danfoss A/S Installation de chauffage central
EP2077423A1 (fr) * 2008-01-02 2009-07-08 Esbe Ab Régulation de la température d'écoulement d'un liquide dans un circuit de chauffage
FR2963087A1 (fr) * 2010-07-26 2012-01-27 Vitherm Appareil de production d'eau chaude sanitaire et procede de fonctionnement d'un tel appareil
DE102019215121A1 (de) * 2019-10-01 2021-04-01 Robert Bosch Gmbh Verfahren zu einer Temperaturregulierung eines Ausgabefluids

Also Published As

Publication number Publication date
AT411632B (de) 2004-03-25
EP1148302B1 (fr) 2006-06-14
ATA6932000A (de) 2003-08-15
DE50110100D1 (de) 2006-07-27
EP1148302A3 (fr) 2003-01-02

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