EP1148302B1 - 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
EP1148302B1
EP1148302B1 EP01890113A EP01890113A EP1148302B1 EP 1148302 B1 EP1148302 B1 EP 1148302B1 EP 01890113 A EP01890113 A EP 01890113A EP 01890113 A EP01890113 A EP 01890113A EP 1148302 B1 EP1148302 B1 EP 1148302B1
Authority
EP
European Patent Office
Prior art keywords
temperature
heat exchanger
speed
regulating
pump
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.)
Expired - Lifetime
Application number
EP01890113A
Other languages
German (de)
English (en)
Other versions
EP1148302A2 (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
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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 controlling the discharge temperature of secondary side in a heat exchanger heated process water, which heat exchanger on the primary side in a via a heat source, in particular a buffer memory, leading, equipped with a controllable in their speed circulation pump heating circuit is integrated, after a PID Controller controls the pump drive as a function of the comparison of the measured secondary-side outlet temperature of the heat exchanger as an actual value with a predetermined setpoint.
  • a heat exchanger for domestic hot water production, it is known to heat the service water on the secondary side via a heat exchanger in the water heater principle, which heat exchanger through a primary circuit with circulation pump and heat source, for example, a filled with hot water heater buffer heat-treated, the energy input into the heat exchanger from the primary-side flow rate and thus depends on the speed of the circulating pump.
  • the hot water outlet temperature is measured at the heat exchanger as an actual value and compared via a PID controller (proportional-integral differential controller) with the desired setpoint and accordingly controls the circulation pump in their speed.
  • PID controller proportional-integral differential controller
  • the controllers have a certain dynamics and therefore the pump speed only in one Limited range may vary properly, especially at the lower speed range, a sensitive overreaction in the control would come about, so far the pump drive control is continuously not possible from zero to the rated speed. It is necessary to recognize a secondary-side flow, so a hot water extraction, including flow switch, differential pressure gauge, water meters u. Like. Serve, and turn off the circulation pump in the primary circuit, as long as there is no secondary flow and turn on only when such a flow occurs, so utility water is removed. If the circulation pump is switched on, then the control of the pump drive takes place in a speed range of approximately 30 to 100% of the rated speed in order to influence the energy input into the heat exchanger for producing domestic hot water.
  • the invention is therefore an object of the invention to provide a method of the type described, which allows a rational way a reliable and sensitive rules of the discharge temperature of hot water.
  • the invention solves this problem in that the PID controller is equipped with a regulator level for the speed zero and the pump drive over the entire speed range is controlled only in response to the actual setpoint comparison, in the case of speed zero and a detectable temperature gradient of the outlet temperature of I-part of the PID controller is reset to its basic position.
  • An electronic PID controller comprises three control parts, the proportional part for amplifying the difference between the actual and the setpoint, the integral part for compensating the deviation remaining by the proportional part and the differential part for influencing the reaction of the control output as a function of the slope of the gradient of the actual value.
  • the integral part compensates in the long term for the proportional part remaining control errors and the differential part leads to a rapid change of the actual value to an overreaction of the controller in order to accelerate the control effect.
  • the proportional part for amplifying the difference between the actual and the setpoint
  • the integral part for compensating the deviation remaining by the proportional part
  • the differential part for influencing the reaction of the control output as a function of the slope of the gradient of the actual value.
  • the detection of a secondary flow in the heat exchanger is dispensed with and the zero speed control stage introduced at the controller, so that due to the always measured secondary outlet temperature of the heat exchanger is a constant standby effort for domestic hot water delivery and also ensures a constant maintenance of the outlet temperature.
  • the outlet temperature on the heat exchanger on the secondary side rises above the setpoint, whereby the controller reduces the pump speed. Since, however, without dhw extraction an increase of the actual value remains, the pump drive is finally driven to zero speed and stopped the circulation pump.
  • the controller will increase the pump speed according to the actual setpoint comparison again until the predetermined temperature is reached, which again leads to a certain increase in the outlet temperature in succession the finite heat transfer rate and the inertia of the temperature measurement leads.
  • the exaggeration of the outlet temperature, ie the actual value, during the standby state recognizes a PID controller as a control deviation, which fully exploits the integral part, so that the integral part due to the non-possible reduction of the speed below the speed level zero, its negative value to the maximum lowers.
  • the controller output can also be switched off when the actual temperature exceeds a setpoint value which is higher than the setpoint value, with the temperature preferably being about 1-3 ° C. above the setpoint value.
  • the actual value rises only slowly because of the then lack of flow, whereby the pump speed only slowly approaches zero and it in the heating circuit to a pumping back hot storage medium in the buffer memory and thus to a mixing of the lower cold storage medium with the hot storage medium , So a deletion in the buffer memory would come. This is avoided by switching off the controller output and thus switching off the circulating pump, wherein falling below the temperature threshold by the actual value again leads to switching on the controller or the pump.
  • the control behavior can be improved as a result of the lower controller and pump dynamics.
  • the calcification risk can be due to lower temperatures in the heat exchanger.
  • a domestic hot water system 1 comprises a heating circuit 2 with a buffer memory 3 and a controllable in their speed circulation pump 4 and a service water circuit 5 with a service water inlet 6 and a service water outlet 7, a heat exchanger 8 is primary side in the heating circuit 2 and secondary side integrated in the hot water circuit 5 and if necessary, hot water heated in a water heater principle.
  • a PID controller 9 which controls the pump drive 10 as a function of the comparison of the secondary outlet temperature of the heat exchanger 8 as an actual value with a predetermined setpoint.
  • a temperature sensor 11 in the outlet region of the process water drain from the heat exchanger 8 reads the corresponding temperature values into the controller 9.
  • the pump drive 10 is controlled over the entire speed range of speed level zero to the rated speed without detection of a flow through the hot water circuit 5 from the controller 9, so that both a standby state in the heat exchanger 8 results as well as keep the discharge temperature of the service water within narrow limits constant wherein to eliminate the regulator inertia due to the saturation drift of the integral part of this integral part at zero speed and at a certain temperature gradient of the outlet temperature is returned to the normal position.
  • a thermal mixer 12 may be installed with the buffer 3 bridging bypass line 13 in the heating circuit 2, so that the primary-side inlet temperature of the heat exchanger 8 is limited to a certain maximum value.

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)
  • Control For Baths (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Control Of Combustion (AREA)

Claims (3)

  1. Procédé de réglage de la température de prélèvement d'eau sanitaire, chauffée, côté secondaire, dans un échangeur de chaleur (8), ledit échangeur de chaleur (8) étant incorporé côté primaire dans un circuit de chauffage passant par une source de chaleur (3), en particulier un accumulateur tampon, avec une pompe de circulation (4) dont la vitesse de rotation peut être commandée, procédé selon lequel un régulateur PID (9) commande l'entraînement de pompe (10) en fonction de la comparaison de la température de sortie côté secondaire mesurée de l'échangeur (8), en tant que valeur réelle, à une valeur de consigne prédéterminée, caractérisée en ce que le régulateur PID (9) est équipé d'un étage de régulateur pour la vitesse de rotation zéro, et l'entraînement de pompe (10) est commandé sur l'ensemble de la plage des vitesses de rotation, uniquement en fonction d'une comparaison valeur réelle- valeur de consigne, sachant que, dans le cas d'un degré de vitesse de consigne zéro et d'un gradient de température identifié de la température de sortie, la partie 1 (intégrale) du régulateur PID (9) subit un rappel à sa position de base.
  2. Procédé selon la revendication 1, caractérisé en ce que la sortie de régulateur est mise hors service, dans le cas où la valeur réelle dépasse un seuil de température augmenté par rapport à la vitesse de consigne.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la température d'entrée, côté primaire, de l'échangeur de chaleur (3) est limitée à une valeur maximale, susceptible d'être prédéterminée, au moyen d'un mélangeur thermique (12), incorporé dans le circuit de chauffage.
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 EP1148302A2 (fr) 2001-10-24
EP1148302A3 EP1148302A3 (fr) 2003-01-02
EP1148302B1 true 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)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10032714A1 (de) * 2000-07-07 2002-01-24 Solvis Solarsysteme Gmbh Anordnung und Verfahren zur Bereitstellung von warmem Brauchwasser
DE10144595B4 (de) * 2001-09-11 2004-03-04 Danfoss A/S Zentralheizungsanlage
EP2077423A1 (fr) * 2008-01-02 2009-07-08 Esbe Ab Régulation de la température d'écoulement d'un liquide dans un circuit de chauffage
FR2963087B1 (fr) * 2010-07-26 2014-12-12 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

Also Published As

Publication number Publication date
AT411632B (de) 2004-03-25
EP1148302A2 (fr) 2001-10-24
EP1148302A3 (fr) 2003-01-02
DE50110100D1 (de) 2006-07-27
ATA6932000A (de) 2003-08-15

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