EP1777466A2 - Method for setting the partial load operation of heating systems - Google Patents
Method for setting the partial load operation of heating systems Download PDFInfo
- Publication number
- EP1777466A2 EP1777466A2 EP06021683A EP06021683A EP1777466A2 EP 1777466 A2 EP1777466 A2 EP 1777466A2 EP 06021683 A EP06021683 A EP 06021683A EP 06021683 A EP06021683 A EP 06021683A EP 1777466 A2 EP1777466 A2 EP 1777466A2
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- EP
- European Patent Office
- Prior art keywords
- heating
- temperature
- load
- flow temperature
- part load
- 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
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001419 dependent effect Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 3
- 239000007789 gas Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
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
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
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- 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
- F24H15/305—Control of valves
- F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
-
- 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 partial load adjustment in heating systems.
- the power rating of a heater to be selected is determined essentially by the desired hot water comfort. So it is customary to provide a heating water capacity of 25 to 30 kW in a water heater with a storage volume of 200 1. If at the same time 150 m 2 of living space are to be heated, 10 kW of heating power are sufficient for this purpose. In order to take this circumstance into account, the maximum power for the heating mode can be set independently of the maximum power in service water mode for heaters. One then speaks of the set heating part load.
- the height of the setting to be selected generally results from a heat demand calculation, in which the parameters to be heated are primarily the area to be heated, the volume of the room, the desired room temperature, as well as the type and design of insulation. Another factor influencing the heating part load to be selected is the outside temperature at which the desired room temperature is ensured. As a rule, the heating systems are set to a minimum outside temperature of -12 to -15 ° C.
- the heater would then run permanently at the set maximum heating part load.
- heaters are operated with external controllers, so-called weather-controlled controllers. These controllers calculate a flow temperature setpoint for the heating circuit as a function of the outside temperature. Alternatively or additionally, room temperature controllers preset a flow temperature setpoint for the heating circuit as a function of the deviation of the temperature of a temperature sensor located in the living space from the setpoint temperature.
- Heating systems with fuel-operated burners are started according to the prior art with a predetermined partial load; this partial load is chosen so that the burner ignites as safely as possible. If a flame is detected, the burner is operated after a few seconds with the demand-driven heating part load until the flow temperature reaches its setpoint temperature.
- the object of the present invention is to adjust the heating part setting before the intervention of the flow temperature control as needed automatically to the current heat demand of the system after the ignition phase.
- heating part load is adjusted individually to the outside or room temperature before reaching the desired flow temperature.
- the temperature rise of the flow is detected and determined from this the necessary heating part load.
- the heating load is set in dependence on the last heating process, in particular the duration and the temperature rise.
- the heating system 1 shows a heating system 1, to which a heating circuit 8 is connected with a radiator 14 as a heat consumer.
- the heating system 1 has a burner 6, which is connected via a regulated blower 2 to an intake manifold 4.
- the intake 4 opens into the ambient air.
- the intake 4 also opens the gas line, which is acted upon by a gas fitting 3 coming from fuel gas.
- Around the burner 6 around is a heat exchanger 7, which is connected to the heating circuit 8.
- the heating system 1 has a control 11, which with the gas fitting 3, the controlled fan 2, the temperature sensor 9 and an external control device 12 to which an outside temperature sensor 13 is connected, connected.
- the outside temperature sensor 13 sends via the external control 12 to the internal control 11, a signal for starting the device.
- the controller 11 sets a predetermined speed for the Blower 2 and a defined flow rate through the gas valve 3 a.
- the fuel gas-air mixture is ignited downstream of the burner 6, the hot exhaust gases cooled in the heat exchanger 7, so that the heat is transferred to the heating circuit 8.
- the water located there is conveyed by the circulation pump 10.
- the heat is released in the radiator 14, preferably in a room to be heated.
- Figure 2 shows the heating curve a according to the prior art and the heating curve b according to the inventive method. According to the prior art, the burner is ignited with a predefined power at a time t 0 .
- the heating part load is increased until time t 2, the maximum heating part load is reached.
- the device is now operated with maximum heating part load, until the time t 3, the pre-actual temperature corresponds to the flow setpoint temperature. Now the heating part load is controlled in such a way that the flow temperature remains constant. This has the consequence that the heating part load decreases from the time t 3 .
- the heating process ends.
- the burner according to the invention is also ignited at the time t 0 . Also at time t 1 , the ignition phase is completed and transferred to the demand-based heating part load. For this purpose, from the time t 1 to the time t 2, the heating part load is lowered until from the time t 2, the heat demand-dependent heating part load is reached. Now, the heating system is operated at a constant power until the time t 5, the flow temperature is reached. From the time t 5 , the heating system is controlled so that the heating flow temperature remains constant. At time t 6 , the heating system is switched off. During this heating process, the output power is ⁇ t 0 t 6 P b t ⁇ dt ,
- FIG. 3 shows the relationship between the outside temperature T a and the heating flow temperature T V. It can be seen that at very low outside temperatures, a high heating flow temperature is required. With increasing outside temperature, the heating flow temperature can be lowered.
- FIG. 4 accordingly shows the relationship between the heating part load P and the outside temperature T a .
- the heating part load can be reduced.
- the heater is operated after the ignition phase before reaching the set flow temperature with a heating part load, which is dependent on the measured value of the outside temperature sensor 13.
- the outside temperature sensor 13 is on the external control 12 to the controller 11 a reading.
- the control calculates the necessary power to operate the burner and accordingly sets the gas flow rate of the gas valve 3 and the speed of the controlled fan 2 a.
- Figure 5 shows a variant of the method according to the invention, in which the flow temperature T V is received. From the course of the flow temperature T V , the gradient T v determined. This is compared with a setpoint. If the gradient of the temperature rise of the flow temperature is smaller than the predetermined value, the heating part load is increased. If the gradient is greater, ie the water heats up faster than it should, the heating part load is reduced.
- FIG. 6 shows a further variant of the method according to the invention and illustrates the change in the heating part load as a function of the duration of the last heating process (t 6 -t 0 ).
- the lines c, d, e and f illustrate characteristics for predetermined temperature differences in the last heating process.
- line c illustrates a heating process in which the flow temperature has been raised by 5 K
- line f illustrates a heating process in which the flow temperature differs by 30 K from the minimum value to the setpoint during the heating process.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Control Of Combustion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Air-Conditioning For Vehicles (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Central Heating Systems (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Teillasteinstellung bei Heizungsanlagen.The invention relates to a method for partial load adjustment in heating systems.
Aufgrund vom immer besser gedämmten Wänden, Fenstern, Dächern usw. sinkt der Heizwärmebedarf seit Jahren. Gleichzeitig steigt tendenziell das Komfortbedürfnis bei der Bereitung von warmem Brauchwasser. Dementsprechend wird die zu wählende Leistungsgröße eines Heizgerätes im Wesentlichen durch den gewünschten Warmwasserkomfort bestimmt. So ist es üblich, bei einem Brauchwasserspeicher mit einem Speichervolumen von 200 1 eine Heizleistung von 25 bis 30 kW bereitzustellen. Sind gleichzeitig 150 m2 Wohnfläche zu beheizen, so reichen hierfür 10 kW Heizleistung aus. Um diesem Umstand Rechnung zu tragen, lässt sich bei Heizgeräten die Maximalleistung für den Heizbetrieb unabhängig von der Maximalleistung im Brauchwasserbetrieb einstellen. Man spricht dann von der eingestellten Heizungsteillast.Due to the increasingly insulated walls, windows, roofs, etc., the heating demand has been falling for years. At the same time, the need for comfort in the production of hot tap water tends to increase. Accordingly, the power rating of a heater to be selected is determined essentially by the desired hot water comfort. So it is customary to provide a heating water capacity of 25 to 30 kW in a water heater with a storage volume of 200 1. If at the same time 150 m 2 of living space are to be heated, 10 kW of heating power are sufficient for this purpose. In order to take this circumstance into account, the maximum power for the heating mode can be set independently of the maximum power in service water mode for heaters. One then speaks of the set heating part load.
Die Höhe der zu wählenden Einstellung ergibt sich in der Regel aus einer Wärmebedarfsrechnung, bei der als Parameter vorwiegend die zu beheizende Fläche, das Raumvolumen, die gewünschte Raumtemperatur, sowie die Art und Ausführung von Dämmungen eingehen. Eine weitere Einflussgröße auf die zu wählende Heizungsteillast ist die Außentemperatur, bei der die gewünschte Raumtemperatur sichergestellt ist. In der Regel legt man die Heizsysteme auf eine minimale Außentemperatur von -12 bis -15°C aus.The height of the setting to be selected generally results from a heat demand calculation, in which the parameters to be heated are primarily the area to be heated, the volume of the room, the desired room temperature, as well as the type and design of insulation. Another factor influencing the heating part load to be selected is the outside temperature at which the desired room temperature is ensured. As a rule, the heating systems are set to a minimum outside temperature of -12 to -15 ° C.
Bei dieser Temperatur würde das Heizgeräte dann permanent auf der eingestellten maximalen Heizungsteillast laufen.At this temperature, the heater would then run permanently at the set maximum heating part load.
Da diese Temperaturen - wenn überhaupt - nur an wenigen Tagen im Jahr erreicht werden, laufen die Heizgeräte an den allermeisten Tagen im Jahr mit einer zu hohen Leistung, was zur Folge hat, dass die Geräte sehr häufig zwischenzeitlich ausschalten, was man auch als Takten bezeichnet. Der Vorgang vom Start des Brenners bis zum Ausschalten wird auch als Schaltspiel bezeichnet.Since these temperatures - if at all - are only reached on a few days a year, the heaters run most days of the year with too high a performance, which means that the devices very often switch off in the meantime, which is also called clocking , The process from starting the burner to switching off is also referred to as a switching cycle.
Häufig werden Heizgeräte mit externen Reglern, so genannten witterungsgeführten Reglern betrieben. Diese Regler errechnen in Abhängigkeit der Außentemperatur einen Vorlauftemperatursollwert für den Heizkreis. Alternativ oder ergänzend geben Raumtemperaturregler in Abhängigkeit von der Abweichung der Temperatur eines im Wohnraum befindlichen Temperaturfühlers von der Solltemperatur einen Vorlauftemperatursollwert für den Heizkreis vor.Frequently, heaters are operated with external controllers, so-called weather-controlled controllers. These controllers calculate a flow temperature setpoint for the heating circuit as a function of the outside temperature. Alternatively or additionally, room temperature controllers preset a flow temperature setpoint for the heating circuit as a function of the deviation of the temperature of a temperature sensor located in the living space from the setpoint temperature.
Alle Systeme haben gemeinsam, dass nach dem Starten des Brenners auch bei modulierenden Systemen nach dem Zünden des Brenners die Anlage mit der höchsten eingestellten Heizungsteillast auch dann betrieben wird, wenn der aktuelle Wärmebedarf der Anlage dies nicht erfordert.All systems have in common that after starting the burner even with modulating systems after the ignition of the burner, the system with the highest set heating part load is operated even if the current heat demand of the system does not require.
Heizungsanlagen mit brennstoffbetriebenen Brennern werden gemäß dem Stand der Technik mit einer vorgegebenen Teillast gestartet; diese Teillast ist derart gewählt, dass der Brenner möglichst sicher zündet. Wird eine Flamme erkannt, so wird der Brenner nach wenigen Sekunden mit der bedarfsgerechten Heizungsteillast betrieben bis die Vorlauftemperatur ihre Solltemperatur erreicht.Heating systems with fuel-operated burners are started according to the prior art with a predetermined partial load; this partial load is chosen so that the burner ignites as safely as possible. If a flame is detected, the burner is operated after a few seconds with the demand-driven heating part load until the flow temperature reaches its setpoint temperature.
Generell ist man beim Betrieb von Heizungsanlagen daran interessiert, die Heizungsanlagen möglichst lange mit kleiner Last anstelle taktend mit hoher Last zu betreiben, da die Schadstoffemissionen beim Start hoch sind und der thermische Wirkungsgrad bei kleiner Last höher als bei Volllast ist.In general, it is in the operation of heating systems keen to operate the heating systems as long as possible with small load instead of clocking with high load, since the pollutant emissions at startup are high and the thermal efficiency at low load is higher than at full load.
Wird die Anlage generell mit kleiner Last bis zur Erreichung der Sollvorlauftemperatur betrieben, so kann es bei hohem Wärmebedarf vorkommen, dass die Solltemperatur nicht erreicht wird. Wird die Anlage zu Beginn mit großer Last betrieben, so besteht die Gefahr, dass die Anlage schnell wieder abschaltet und in den taktenden Betrieb übergeht.If the system is generally operated with low load until the setpoint flow temperature is reached, it may happen that the setpoint temperature is not reached when there is a high heat requirement. If the system is initially operated at high load, there is a risk that the system will switch off quickly and switch over to cyclic operation.
Aufgabe der vorliegenden Erfindung ist es, bereits nach der Zündphase die Heizungsteillasteinstellung vor dem Eingriff der Vorlauftemperaturregelung bedarfsgerecht selbsttätig an den aktuellen Wärmebedarf der Anlage anzupassen.The object of the present invention is to adjust the heating part setting before the intervention of the flow temperature control as needed automatically to the current heat demand of the system after the ignition phase.
Erfindungsgemäß wird dies gemäß Anspruch 1 dadurch gelöst, dass bereits vor Erreichen der Vorlaufsolltemperatur die Heizungsteillast individuell an die Außen- oder Raumtemperatur angepasst wird.According to the invention this is achieved according to
Alternativ hierzu wird gemäß dem unabhängigen Anspruch 2 der Temperaturanstieg des Vorlaufs erfasst und hieraus die notwendige Heizungsteillast bestimmt.Alternatively, according to the
Gemäß Anspruch 4 wird die Heizlast in Abhängigkeit des letzten Heizvorganges, insbesondere der Dauer und des Temperaturanstiegs, eingestellt.According to claim 4, the heating load is set in dependence on the last heating process, in particular the duration and the temperature rise.
Die Erfindung wird nun anhand der Figuren erläutert.
- Fig. 1 zeigt ein Heizgerät zur Durchführung des erfindungsgemäßen Verfahrens,
- Fig. 2 je einen Kurvenverlauf gemäß dem Stand der Technik und dem erfindungsgemäßen Verfahren,
- Fig. 3 den Zusammenhang zwischen Außentemperatur und Vorlauftemperatur der Heizung,
- Fig. 4 den Zusammenhang zwischen Außentemperatur und Heizungsteillast,
- Fig. 5 die Anpassung der Heizungsteillast gemäß einem erfindungsgemäßen Verfahren sowie
- Fig. 6 die Veränderung der Heizungsteillast gemäß einem abgeänderten Verfahren.
- 1 shows a heating device for carrying out the method according to the invention,
- 2 each a curve according to the prior art and the method according to the invention,
- 3 shows the relationship between the outside temperature and flow temperature of the heater,
- 4 shows the relationship between the outside temperature and the heating part load,
- Fig. 5 shows the adjustment of the heating part load according to a method of the invention and
- Fig. 6 shows the change in the heating part load according to a modified method.
Figur 1 zeigt eine Heizungsanlage 1, an welcher ein Heizungskreislauf 8 mit einem Radiator 14 als Wärmeabnehmer angeschlossen ist. Die Heizungsanlage 1 verfügt über einen Brenner 6, welcher über ein geregeltes Gebläse 2 an einen Ansaugstutzen 4 angeschlossen ist. Der Ansaugstutzen 4 mündet in die Umgebungsluft. In den Ansaugstutzen 4 mündet ebenfalls die Gasleitung, welche von einer Gasarmatur 3 herkommend mit Brenngas beaufschlagt ist. Um den Brenner 6 herum befindet sich ein Wärmeaustauscher 7, welcher mit dem Heizungskreislauf 8 verbunden ist. Im Rücklauf des Heizungskreislaufs 8 befindet sich eine Umwälzpumpe 10, im Vorlauf ein Vorlauftemperatursensor 9. Die Heizungsanlage 1 verfügt über eine Regelung 11, welche mit der Gasarmatur 3, dem geregelten Gebläse 2, dem Temperatursensor 9 sowie einem externen Regelungsgerät 12, an welches ein Außentemperaturfühler 13 angeschlossen ist, verbunden.1 shows a
Beim Betrieb des Heizungsgerätes 1 sendet der Außentemperaturfühler 13 über die externe Regelung 12 an die interne Regelung 11 ein Signal zum Starten des Gerätes. In Abhängigkeit des Wärmebedarfs stellt die Regelung 11 eine vorbestimmte Drehzahl für das Gebläse 2 sowie einen definierten Durchsatz durch die Gasarmatur 3 ein. Das Brenngas-Luftgemisch wird stromab des Brenners 6 gezündet, die heißen Abgase in dem Wärmeübertrager 7 abgekühlt, so dass die Wärme auf den Heizungskreislauf 8 übertragen wird. Das sich dort befindliche Wasser wird durch die Umwälzpumpe 10 gefördert. Die Wärme wird in dem Radiator 14, vorzugsweise in einem zu beheizenden Raum, abgegeben. Figur 2 zeigt die Heizungskurve a gemäß dem Stand der Technik sowie die Heizungskurve b nach dem erfindungsgemäßen Verfahren. Nach dem Stand der Technik wird zu einem Zeitpunkt t0 der Brenner mit einer vordefinierten Leistung gezündet. Es wird abgewartet bis sich die Flamme zu einem Zeitpunkt t1 stabilisiert hat. Zum Zeitpunkt t1 wird die Heizungsteillast erhöht bis zum Zeitpunkt t2 die maximale Heizungsteillast erreicht ist. Das Gerät wird nun mit maximaler Heizungsteillast betrieben, bis zum Zeitpunkt t3 die Vorauf-Ist-Temperatur der Vorlauf-Soll-Tempertur entspricht. Nun wird die Heizungsteillast derart geregelt, dass die Vorlauftemperatur konstant bleibt. Dies hat zur Folge, dass die Heizungsteillast ab dem Zeitpunkt t3 abnimmt. Zum Zeitpunkt t4 endet der Heizvorgang.During operation of the
Während des Heizvorgangs wird eine Wärme
Nach dem erfindungsgemäßen Verfahren wird ebenfalls zum Zeitpunkt t0 der Brenner gezündet. Ebenfalls zum Zeitpunkt t1 wird die Zündphase abgeschlossen und in die bedarfsgerechte Heizungsteillast übergegangen. Hierzu wird von dem Zeitpunkt t1 bis zum Zeitpunkt t2 die Heizungsteillast abgesenkt, bis ab dem Zeitpunkt t2 die wärmebedarfsabhängige Heizungsteillast erreicht wird. Nun wird die Heizungsanlage mit konstanter Leistung betrieben, bis zu einem Zeitpunkt t5 die Vorlaufsolltemperatur erreicht ist. Ab dem Zeitpunkt t5 wird die Heizungsanlage derart geregelt, dass die Heizungsvorlauftemperatur konstant bleibt. Zum Zeitpunkt t6 wird die Heizungsanlage abgeschaltet. Während dieses Heizungsvorgangs beträgt die abgegebene Leistung
Die abgegebene Heizleistung ist gemäß dem Stand der Technik gleich dem erfindungsgemäßen Verfahren
Figur 3 zeigt das Verhältnis zwischen Außentemperatur Ta und der Heizungsvorlauftemperatur TV. Es ist zu erkennen, dass bei sehr niedrigen Außentemperaturen eine hohe Heizungsvorlauftemperatur benötigt wird. Mit steigender Außentemperatur kann die Heizungsvorlauftemperatur abgesenkt werden.FIG. 3 shows the relationship between the outside temperature T a and the heating flow temperature T V. It can be seen that at very low outside temperatures, a high heating flow temperature is required. With increasing outside temperature, the heating flow temperature can be lowered.
Figur 4 zeigt dementsprechend das Verhältnis zwischen Heizungsteillast P zur Außentemperatur Ta. Auch hier wird deutlich, dass mit steigender Außentemperatur die Heizungsteillast reduziert werden kann.FIG. 4 accordingly shows the relationship between the heating part load P and the outside temperature T a . Here, too, it becomes clear that with increasing outside temperature the heating part load can be reduced.
Gemäß einer Variante des erfindungsgemäßen Verfahrens wird nach der Zündphase vor Erreichen der Vorlaufsolltemperatur die Heizung mit einer Heizungsteillast betrieben, welche vom Messwert des Außentemperaturfühlers 13 abhängig ist. Der Außentemperaturfühler 13 gibt über die externe Regelung 12 an die Regelung 11 einen Messwert weiter. Gemäß der Figuren 3 und 4 errechnet die Regelung die notwendige Leistung zum Betrieb des Brenners und stellt demgemäß den Gasdurchsatz der Gasarmatur 3 als auch die Drehzahl des geregelten Gebläses 2 ein.According to a variant of the method according to the invention, the heater is operated after the ignition phase before reaching the set flow temperature with a heating part load, which is dependent on the measured value of the
Figur 5 zeigt eine Variante des erfindungsgemäßen Verfahrens, bei welchem die Vorlauftemperatur TV aufgenommen wird. Aus dem Verlauf der Vorlauftemperatur TV wird der Gradient
Figur 6 zeigt eine weitere Variante des erfindungsgemäßen Verfahrens und verdeutlicht die Veränderung der Heizungsteillast in Abhängigkeit der Dauer des letzten Heizvorganges (t6 - t0). Die Linien c, d, e und f verdeutlichen Kennlinien für vorgegebene Temperaturdifferenzen bei letzten Heizvorgang. So verdeutlicht die Linie c einen Heizvorgang, bei dem die Vorlauftemperatur um 5 K angehoben wurde, Linie f verdeutlicht einen Heizvorgang, bei dem die Vorlauftemperatur um 30 K während des Heizvorganges vom Minimalwert zum Sollwert differiert.FIG. 6 shows a further variant of the method according to the invention and illustrates the change in the heating part load as a function of the duration of the last heating process (t 6 -t 0 ). The lines c, d, e and f illustrate characteristics for predetermined temperature differences in the last heating process. Thus line c illustrates a heating process in which the flow temperature has been raised by 5 K, line f illustrates a heating process in which the flow temperature differs by 30 K from the minimum value to the setpoint during the heating process.
Beispiel: Wurde beim letzten Heizvorgang die Vorlauftemperatur um 20 K in 20 min angehoben, so ist dies gemäß Kennlinie e ein Indiz dafür, dass die Heizungsteillast nicht verändert werden sollte. Wurde für die Temperaturanhebung des Vorlaufs bei 20 K eine Zeit von 30 min benötigt, so muss gemäß der Kennlinie e beim nächsten Heizvorgang die Heizungsteillast um 10% angehoben werden. Wurden hingegen nur 10 min benötigt, so wird beim nächsten Heizvorgang die Heizungsteillast um 10% reduziert.Example: If the flow temperature was raised by 20 K in 20 minutes during the last heating process, this is an indication according to the characteristic curve e that the heating part load should not be changed. If a time of 30 min was required for the temperature rise of the flow at 20 K, then the heating part load must be raised by 10% according to the characteristic curve e during the next heating process. If, however, only 10 minutes were required, the heating part load will be reduced by 10% during the next heating process.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT06021683T ATE435402T1 (en) | 2005-10-24 | 2006-10-17 | METHOD FOR PARTIAL LOAD ADJUSTMENT IN HEATING SYSTEMS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0172905A AT502405B1 (en) | 2005-10-24 | 2005-10-24 | METHOD FOR PARTIAL LOOM SETTING ON HEATING SYSTEMS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1777466A2 true EP1777466A2 (en) | 2007-04-25 |
EP1777466A3 EP1777466A3 (en) | 2008-07-02 |
EP1777466B1 EP1777466B1 (en) | 2009-07-01 |
Family
ID=37691775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06021683A Active EP1777466B1 (en) | 2005-10-24 | 2006-10-17 | Method for setting the partial load operation of heating systems |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1777466B1 (en) |
AT (2) | AT502405B1 (en) |
DE (2) | DE502006004114D1 (en) |
DK (1) | DK1777466T3 (en) |
ES (1) | ES2328390T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113137764A (en) * | 2021-03-26 | 2021-07-20 | 浙江中广电器股份有限公司 | Dynamic energy-saving control method and controller for heat pump water heater and water heater |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1248044A2 (en) | 2001-03-26 | 2002-10-09 | Vaillant GmbH | Method for starting a heater |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATA118095A (en) * | 1994-07-16 | 2005-01-15 | Vaillant Gmbh | METHOD FOR CONTROLLING A HEATING SYSTEM |
-
2005
- 2005-10-24 AT AT0172905A patent/AT502405B1/en not_active IP Right Cessation
-
2006
- 2006-10-17 DE DE502006004114T patent/DE502006004114D1/en active Active
- 2006-10-17 ES ES06021683T patent/ES2328390T3/en active Active
- 2006-10-17 EP EP06021683A patent/EP1777466B1/en active Active
- 2006-10-17 AT AT06021683T patent/ATE435402T1/en active
- 2006-10-17 DE DE102006048937A patent/DE102006048937A1/en not_active Withdrawn
- 2006-10-17 DK DK06021683T patent/DK1777466T3/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1248044A2 (en) | 2001-03-26 | 2002-10-09 | Vaillant GmbH | Method for starting a heater |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113137764A (en) * | 2021-03-26 | 2021-07-20 | 浙江中广电器股份有限公司 | Dynamic energy-saving control method and controller for heat pump water heater and water heater |
Also Published As
Publication number | Publication date |
---|---|
DE502006004114D1 (en) | 2009-08-13 |
DK1777466T3 (en) | 2009-10-05 |
AT502405A4 (en) | 2007-03-15 |
EP1777466A3 (en) | 2008-07-02 |
DE102006048937A1 (en) | 2007-04-26 |
EP1777466B1 (en) | 2009-07-01 |
AT502405B1 (en) | 2007-03-15 |
ATE435402T1 (en) | 2009-07-15 |
ES2328390T3 (en) | 2009-11-12 |
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