EP1382919A1 - Procédé d'optimisation du point d'allumage d'un brûleur dans le domaine des basses temperatures de fonctionnement d'une chaudière - Google Patents

Procédé d'optimisation du point d'allumage d'un brûleur dans le domaine des basses temperatures de fonctionnement d'une chaudière Download PDF

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Publication number
EP1382919A1
EP1382919A1 EP02015836A EP02015836A EP1382919A1 EP 1382919 A1 EP1382919 A1 EP 1382919A1 EP 02015836 A EP02015836 A EP 02015836A EP 02015836 A EP02015836 A EP 02015836A EP 1382919 A1 EP1382919 A1 EP 1382919A1
Authority
EP
European Patent Office
Prior art keywords
burner
boiler temperature
switch
boiler
point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02015836A
Other languages
German (de)
English (en)
Inventor
Bruno Illi
Armin Reichlin
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.)
Siemens Schweiz AG
Original Assignee
Siemens Building Technologies AG
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 Siemens Building Technologies AG filed Critical Siemens Building Technologies AG
Priority to EP02015836A priority Critical patent/EP1382919A1/fr
Publication of EP1382919A1 publication Critical patent/EP1382919A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/48—Learning / Adaptive control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/10—Measuring temperature stack temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements

Definitions

  • the invention relates to a method according to the preamble of Claim 1.
  • boilers are not below one certain minimum boiler temperature may be operated, otherwise there is a risk of condensation in the boiler, which can destroy the Boiler could cause corrosion.
  • the minimum to be followed The boiler temperature can also depend on the fuel, among other things his. In general, it is desirable that the minimum The boiler temperature can be set as low as possible so that the Boilers are operated in the largest possible temperature range can.
  • the burner is below the minimum boiler temperature turned on to prevent the minimum boiler temperature continues to drop.
  • a solution is described for example in the publication DE 2919751 C2. Since the Burner generally after the burner start command by the Regulation does not start immediately, for example due to the opening of the Air damper, oil preheating, pre-ventilation, etc. and also due to the inertia of the Boiler, e.g. B. Time constant of the boiler temperature sensor, mass of the Boiler, water mass, etc., the boiler temperature can be below the minimum permissible boiler temperature fall.
  • the invention is based on the object in addition to optimizing the Burner runtime and the number of burner starts per unit of time, a process to optimize the switch-on point of a burner in the range of minimum boiler temperature that the above mentioned Avoids disadvantages of the prior art and in which the Boiler temperature in compliance with the required minimum Boiler temperature operated in the largest possible temperature range the minimum boiler temperature is as low as possible can be adjusted.
  • the solution according to the invention exists in that the burner switch-on point is in the range of the minimum Boiler temperature to that in a heating system Conditions, e.g. thermal load, burner type, boiler type, Time constant of the boiler temperature sensor, etc. is adjusted.
  • a heating system Conditions e.g. thermal load, burner type, boiler type, Time constant of the boiler temperature sensor, etc.
  • the number of burner starts may vary Unit of time in a heating system can be reduced, reducing energy is saved.
  • the simplest variant of the method according to the invention is for example, to determine how after turning on the burner the boiler temperature drops sharply before the boiler temperature again increases. This value is saved as an auxiliary variable and the next one The burner starts when the burner is corrected by this auxiliary variable Burner start-up boiler temperature switched on. Because of this very simple The burner switch-on point can be moved with the same thermal Load should be corrected according to the auxiliary size. You can do this for different loads different auxiliary quantities to correct the Burner switch-on point are used. These auxiliary variables are used depending on the respective load profile. The disadvantage of this solution, however, is the fact that load fluctuations can only be recorded afterwards. An improvement on this The solution is the consideration of the boiler temperature gradient as a measure for the thermal load for determining the burner switch-on point.
  • a plant-specific setting to provide, for example, with a Standard boiler temperature gradients, e.g. B. 10 Kelvin per 60 seconds, one typical burner start-up time, e.g. B. of 60 seconds.
  • a Standard boiler temperature gradients e.g. B. 10 Kelvin per 60 seconds
  • one typical burner start-up time e.g. B. of 60 seconds.
  • the boiler temperature at which the burner is calculated must be switched on so that the boiler temperature at the minimum The boiler temperature rises again.
  • the burner switch-forward advance time preferably learned from the control itself during a learning phase.
  • FIG. 1 shows the method according to the invention taking into account the thermal load, for example based on the boiler temperature gradient and
  • FIG. 2 shows a circuit diagram for the burner switch-on point different loads.
  • the control is provided with a start value for the burner switch-on advance time T BVZ .
  • T BVZ After the first burner start, it is recorded how large the deviation between the desired minimum boiler temperature T MIN and the actual minimum boiler temperature is. Depending on this deviation and the knowledge of the boiler temperature gradient at the time the burner is released, the burner switch-on advance can be corrected accordingly. For example, if the minimum boiler temperature was reached too early, it will decrease, if it was reached too late, it will increase.
  • the corrected burner switch-on advance time T BVZ ' is stored and is used for the next burner switch-on for determining the switch-on point.
  • NZ e.g. +/- 0.5 Kelvin around T MIN
  • the burner switch-on advance time T BVZ can be learned each time the burner is started.
  • the learning factor ie the correction of the burner switch-on advance time per burner start, can for example also be made ever smaller with increasing time.
  • the learning of the burner activation advance time can only take place in the initial phase and is frozen with increasing time, for example after a few days. In both cases, the size of the burner switch-on advance is expediently limited.
  • Burner switch-forward advance time can now be corrected accordingly become.
  • the correction can only be made initially by a partial amount in order to gradually reach the correct value. This The advantage of doing this is that it is less susceptible to interference.
  • the burner control system can use the adaptive method according to the invention to calculate the burner switch-on temperature at which the burner is to receive a start signal based on the experience gained in the past, for example on the basis of the learned burner switch-on advance time and the boiler temperature gradient.
  • the temperature for the burner switch-on point or the displacement of the switch-on point T ON is expediently limited, for example, to 20 Kelvin. It is also important to ensure that a minimum temperature difference to the safety temperature limiter (STB) must always be observed.
  • STB safety temperature limiter
  • the burner switch-on point TEIN is adapted to the plant conditions
  • the minimum boiler temperature equal to the minimum allowable Boiler temperature can be set and is still guaranteed that the minimum permissible boiler temperature is usually during the normal operation is not undercut even with different loads. Only if there is a large load increase shortly after switching on the Brenners could no longer respond to such a load change and a brief drop below the minimum boiler temperature would be in cannot be excluded in this case. Because such load jumps usually however, occur very rarely during normal operation these shortfalls are not a problem in practice.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
EP02015836A 2002-07-16 2002-07-16 Procédé d'optimisation du point d'allumage d'un brûleur dans le domaine des basses temperatures de fonctionnement d'une chaudière Withdrawn EP1382919A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02015836A EP1382919A1 (fr) 2002-07-16 2002-07-16 Procédé d'optimisation du point d'allumage d'un brûleur dans le domaine des basses temperatures de fonctionnement d'une chaudière

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02015836A EP1382919A1 (fr) 2002-07-16 2002-07-16 Procédé d'optimisation du point d'allumage d'un brûleur dans le domaine des basses temperatures de fonctionnement d'une chaudière

Publications (1)

Publication Number Publication Date
EP1382919A1 true EP1382919A1 (fr) 2004-01-21

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ID=29762626

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EP02015836A Withdrawn EP1382919A1 (fr) 2002-07-16 2002-07-16 Procédé d'optimisation du point d'allumage d'un brûleur dans le domaine des basses temperatures de fonctionnement d'une chaudière

Country Status (1)

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EP (1) EP1382919A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919751A1 (de) 1979-05-16 1980-11-20 Dietrich H Weisse Betriebsschaltung fuer mit heizkessel kombinierte waermepumpen
DE3446167A1 (de) 1984-11-22 1986-05-22 LGZ Landis & Gyr Zug AG, Zug Regelgeraet fuer eine heizungsanlage
EP0563752A1 (fr) * 1992-04-03 1993-10-06 Buderus Heiztechnik GmbH Procédé pour l'optimisation des durées de fonctionnement d'un brûleur et du nombre d'allumages d'un brûleur par unité de temps dans une installation de chauffage
DE19503630A1 (de) * 1994-01-26 1995-10-12 Vaillant Joh Gmbh & Co Verfahren zum kondensatfreien Betreiben eines Umlaufwasserheizers
EP0740111A1 (fr) * 1995-04-28 1996-10-30 Robert Bosch Gmbh Dispositif de chauffage et méthode pour contrÔler ce dispositif et appareil de chauffage
DE19735511A1 (de) * 1997-08-16 1999-03-04 Buderus Heiztechnik Gmbh Regelverfahren für Niedertemperaturheizkessel
DE29921359U1 (de) * 1999-12-03 2000-04-13 MOI Elektronik AG, 66780 Rehlingen-Siersburg Vorrichtung zur Steuerung einer brennerbetriebenen Heizungsanlage
DE19941700C1 (de) * 1999-09-02 2000-11-30 Bosch Gmbh Robert Vorrichtung zum Betreiben einer Heizungsanlage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919751A1 (de) 1979-05-16 1980-11-20 Dietrich H Weisse Betriebsschaltung fuer mit heizkessel kombinierte waermepumpen
DE3446167A1 (de) 1984-11-22 1986-05-22 LGZ Landis & Gyr Zug AG, Zug Regelgeraet fuer eine heizungsanlage
EP0563752A1 (fr) * 1992-04-03 1993-10-06 Buderus Heiztechnik GmbH Procédé pour l'optimisation des durées de fonctionnement d'un brûleur et du nombre d'allumages d'un brûleur par unité de temps dans une installation de chauffage
EP0563752B1 (fr) 1992-04-03 1996-07-24 Buderus Heiztechnik GmbH Procédé pour l'optimisation des durées de fonctionnement d'un brûleur et du nombre d'allumages d'un brûleur par unité de temps dans une installation de chauffage
DE19503630A1 (de) * 1994-01-26 1995-10-12 Vaillant Joh Gmbh & Co Verfahren zum kondensatfreien Betreiben eines Umlaufwasserheizers
EP0740111A1 (fr) * 1995-04-28 1996-10-30 Robert Bosch Gmbh Dispositif de chauffage et méthode pour contrÔler ce dispositif et appareil de chauffage
DE19735511A1 (de) * 1997-08-16 1999-03-04 Buderus Heiztechnik Gmbh Regelverfahren für Niedertemperaturheizkessel
DE19941700C1 (de) * 1999-09-02 2000-11-30 Bosch Gmbh Robert Vorrichtung zum Betreiben einer Heizungsanlage
DE29921359U1 (de) * 1999-12-03 2000-04-13 MOI Elektronik AG, 66780 Rehlingen-Siersburg Vorrichtung zur Steuerung einer brennerbetriebenen Heizungsanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
G. KALLINA: "Erfahrungen mit einem Optimierungsrechner für Heizungsanlagen in einem grossen Wohngebäude", AUTOMATISIERUNGSTECHNISCHE PRAXIS, vol. 1, 1987, München, pages 6 - 16, XP002224987 *

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