EP0874200A1 - Heating installation with mixing cylinder - Google Patents

Heating installation with mixing cylinder Download PDF

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Publication number
EP0874200A1
EP0874200A1 EP97106527A EP97106527A EP0874200A1 EP 0874200 A1 EP0874200 A1 EP 0874200A1 EP 97106527 A EP97106527 A EP 97106527A EP 97106527 A EP97106527 A EP 97106527A EP 0874200 A1 EP0874200 A1 EP 0874200A1
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EP
European Patent Office
Prior art keywords
temperature
volume flow
circuit
flow
generator circuit
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Granted
Application number
EP97106527A
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German (de)
French (fr)
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EP0874200B1 (en
Inventor
Peter Ries
Illi Bruno
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Siemens Building Technologies AG
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Electrowatt Technology Innovation AG
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Priority to DE59706553T priority Critical patent/DE59706553D1/en
Priority to EP97106527A priority patent/EP0874200B1/en
Priority to AT97106527T priority patent/ATE214141T1/en
Publication of EP0874200A1 publication Critical patent/EP0874200A1/en
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Publication of EP0874200B1 publication Critical patent/EP0874200B1/en
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    • 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
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1091—Mixing cylinders

Definitions

  • the invention relates to a heating system with a hydraulic switch in the preamble of Claim 1 mentioned type.
  • Heating systems include a producer circuit and a consumer circuit.
  • the producer group contains At least one heat generator, the consumer group at least one heat consumer.
  • the Independent sizes of the heating system are the temperatures in the flow and the return of the Consumer circuit, as well as the volume flow in the consumer circuit, while the temperatures in Flow and return of the producer circuit, as well as the volume flow in the producer circuit as that dependent sizes are to be considered.
  • Volume flow at the volume flow required by the heat consumers are the producer circuit and the consumer circuit is decoupled by a hydraulic switch. In practice, this has the following Effects: If the volume flow in the generator circuit is greater than the volume flow in Is consumer circuit, then a preliminary admixture takes place in the Generator circuit, causing the return temperature in the generator circuit to rise.
  • the return temperature be as low as possible. If the volume flow in the generator circuit is smaller than the volume flow in the consumer circuit, then a return mixture is added in the consumer circuit, whereby the flow temperature in the consumer circuit drops. For Coverage of the heat demand from the consumer must then either the volume flow in Consumer group are increased, whereby the return admixture in the consumer group still amplified, or the flow temperature of the generator circuit must be increased.
  • the invention has for its object in a heating system with a hydraulic switch the volume flow flowing in the generator circuit depending on the flow in the consumer circuit To control volume flow so that the return temperature in the generator circuit is as low as possible.
  • the generator circuit 1 shows a heating system with a generator circuit 1, a consumer circuit 2 and a hydraulic switch 3 for the hydraulic decoupling of the generator circuit 1 and the consumer circuit 2.
  • the generator circuit 1 comprises a flow line 4 and a return line 5, between which at least one heat generator 6 is arranged is.
  • a means 7 is used to control the volume flow V E flowing through the generator circuit 1.
  • the means 7 is a controllable pump or a throttle valve which is built into the return line 5 of the generator circuit 1.
  • the consumer circuit 2 also comprises a flow line 8 and a return line 9, between which a single or several heat consumers 10 are arranged.
  • the volume flow V E flowing through the load circuit 2 flows to the volume flow V V. If the volume flows V E and V V are different, then a volume flow V W also flows through the hydraulic switch 3.
  • the positive flow direction of the volume flows is marked with arrows in FIG. 1.
  • the size of the volume flow V V required by the heat consumers 10 is determined, depending on the design of the heating system, by mixing valves, thermostatic valves, pumps, taps, etc. arranged on the consumption side. According to the invention, the return temperature in the generator circuit 1 becomes minimal when the volume flow V W flowing through the hydraulic switch 3 almost disappears.
  • TV E denotes the temperature in the flow line 4 of the generator circuit 1
  • TV V denotes the temperature in the flow line 8 of the consumer circuit 2
  • TR V denotes the temperature in the return line 5 of the consumer circuit 2
  • TR E denotes the temperature in the return line 9 of the generator circuit 1.
  • the temperatures TV E , TR E , TV V and TV E are not independent of one another, but depend on the volume flow V W caused by the hydraulic Soft 3 flows. This dependency is used according to the invention in order to minimize the volume flow V W.
  • all four temperature measuring points TV E , TR E , TV V and TV E are equipped with a temperature sensor.
  • the temperatures TV E , TR E , TV V and TV E are recorded by a control and regulating device 11.
  • the control and regulating device 11 controls and / or regulates the means 7 for controlling the volume flow V E flowing in the generator circuit 1 in such a way that the volume flow V E is reduced, provided that TR E > TR V and that the volume flow V E is increased, if TV E > TV V.
  • At least the two temperature measuring points TV E and TV V are equipped with a temperature sensor.
  • the control and regulating device 11 controls and / or regulates the volume flow V E with the means 7 in such a way that the difference TV E - TV V is as small as possible, but larger than a positive value dT 1 .
  • At least the two temperature measuring points TR E and TR V are equipped with a temperature sensor.
  • the control and regulating device 11 controls and / or regulates the volume flow V E with the means 7 in such a way that the difference TR E - TR V is as small as possible, but larger than a value dT 2 .
  • the regulation on the value TR E - TR V 0 not sensible, since the volume flow V W through the switch 3 could then become arbitrarily large negative.
  • the advantage of the invention is that the temperature TR E on the generator side of the return line 5 is as low as possible.
  • the walls of the combustion chamber are as cool as possible and therefore the condensation of the exhaust gases produced during combustion is maximal and the heat loss due to escaping warm exhaust gases is minimized.
  • an advantage of the invention is that the flow temperature of the generating circuit 1 can be kept as low as possible, since no or only a little cool water is added to the flow. The efficiency of the heat generator 6 is thus increased thanks to the invention.
  • the temperature sensors were arranged in the supply and return lines 4, 8, 5 and 9. In practice, it often happens that the temperature sensor for measuring the temperature TV E of the flow line 4 of the generator circuit 1 is arranged directly in the heat generator 6.
  • the teaching according to the invention can also be used if one of the two temperature sensors for measuring TV E or TV V and / or one of the two temperature sensors for measuring TR E or TR V is suitably placed in the hydraulic switch 3.
  • the control and regulating device 11 is set up, the heating system in quasi-stationary operation or at to control or regulate slowly changing conditions in the manner described. While the start-up phase of the heating system or, for example, when changing from normal temperature to Lowering temperature, it can be advantageous not to use the control according to the invention, since it could then be counterproductive.
  • the increase in the volume flow V E in the first step for example by 10%, therefore causes warm water flows through the hydraulic switch 3 into the return line 5, since the volume flow V V through the heat consumers 10 remains unchanged.
  • the temperature TR E thus increases.
  • the volume flow V E is reduced again in discrete steps, for example in steps of 2%.
  • the warm volume flow V W is reduced again by the hydraulic switch 3, so that the temperature TR E decreases again.
  • the temperature TR E can only decrease as long as warm water is still flowing through the hydraulic switch 3 and is mixed with the cooler return water. If the temperature TR E no longer decreases, then the volume flow V E may no longer be reduced, since otherwise cold water would flow through the hydraulic switch 3 in the opposite direction.
  • This method has the advantage that only a single temperature sensor is required. It is particularly applicable when the volume flow V V required by the consumer is not subject to major fluctuations. The frequency with which the method is carried out is therefore preferably adapted to the needs of the users. In practice, this method is particularly interesting when the heating system has only a single heat generator 6.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Temperature (AREA)
  • Control Of Eletrric Generators (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Abstract

The system has a generator circuit (1) and a load circuit (2) with a common inlet line (4,8) and a common return line (5,9) connected via a hydraulic switch (3) and at least one arrangement (7) for controlling the volumetric flow (VE) in the generator circuit. One or more temperature sensors are used to enable the direction and magnitude of the volumetric flow through the hydraulic switch to be determined in all cases. The volumetric flow in the generator circuit is regulated to minimize the flow (VW) through the switch.

Description

Die Erfindung betrifft eine Heizungsanlage mit einer hydraulischen Weiche der im Oberbegriff des Anspruchs 1 genannten Art.The invention relates to a heating system with a hydraulic switch in the preamble of Claim 1 mentioned type.

Heizungsanlagen umfassen einen Erzeugerkreis und einen Verbraucherkreis. Der Erzeugerkreis enthält Wenigstens einen Wärmeerzeuger, der Verbraucherkreis wenigstens einen Wärmeverbraucher. Die unabhängigen Grössen der Heizungsanlage sind die Temperaturen im Vorlauf und im Rücklauf des Verbraucherkreises, sowie der Volumenstrom im Verbraucherkreis, während die Temperaturen im Vorlauf und im Rücklauf des Erzeugerkreises, sowie der Volumenstrom im Erzeugerkreis als die abhängigen Grössen zu betrachten sind. Zur Anpassung des von den Wärmeerzeugern erzeugten Volumenstromes an den von den Wärmeverbrauchern benötigten Volumenstrom sind der Erzeugerkreis und der Verbraucherkreis durch eine hydraulische Weiche entkoppelt. In der Praxis hat dies folgende Auswirkungen: Wenn der Volumenstrom im Erzeugerkreis grösser als der Volumenstrom im Verbraucherkreis ist, dann erfolgt wegen der hydraulischen Weiche eine Vorlaufbeimischung im Erzeugerkreis, wodurch die Rücklauftemperatur im Erzeugerkreis ansteigt. Bei modernen Brennwertkesseln ist es jedoch erwünscht, dass die Rücklauftemperatur möglichst tief ist. Wenn der Volumenstrom im Erzeugerkreis kleiner als der Volumenstrom im Verbraucherkreis ist, dann erfolgt eine Rücklaufbeimischung im Verbraucherkreis, wodurch die Vorlauftemperatur im Verbraucherkreis sinkt. Zur Deckung des verbraucherseitigen Wärmebedarfs muss dann entweder der Volumenstom im Verbraucherkreis erhöht werden, wodurch sich die Rücklaufbeimischung im Verbraucherkreis noch verstärkt, oder es muss die Vorlauftemperatur des Erzeugerkreises erhöht werden.Heating systems include a producer circuit and a consumer circuit. The producer group contains At least one heat generator, the consumer group at least one heat consumer. The Independent sizes of the heating system are the temperatures in the flow and the return of the Consumer circuit, as well as the volume flow in the consumer circuit, while the temperatures in Flow and return of the producer circuit, as well as the volume flow in the producer circuit as that dependent sizes are to be considered. To adapt the generated by the heat generators Volume flow at the volume flow required by the heat consumers are the producer circuit and the consumer circuit is decoupled by a hydraulic switch. In practice, this has the following Effects: If the volume flow in the generator circuit is greater than the volume flow in Is consumer circuit, then a preliminary admixture takes place in the Generator circuit, causing the return temperature in the generator circuit to rise. With modern condensing boilers however, it is desirable that the return temperature be as low as possible. If the volume flow in the generator circuit is smaller than the volume flow in the consumer circuit, then a return mixture is added in the consumer circuit, whereby the flow temperature in the consumer circuit drops. For Coverage of the heat demand from the consumer must then either the volume flow in Consumer group are increased, whereby the return admixture in the consumer group still amplified, or the flow temperature of the generator circuit must be increased.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Heizungsanlage mit einer hydraulischen Weiche den im Erzeugerkreis fliessenden Volumenstrom in Abhängigkeit des im Verbraucherkreis fliessenden Volumenstromes derart zu steuern, dass die Rücklauttemperatur im Erzeugerkreis möglichst tief ist.The invention has for its object in a heating system with a hydraulic switch the volume flow flowing in the generator circuit depending on the flow in the consumer circuit To control volume flow so that the return temperature in the generator circuit is as low as possible.

Die Erfindung ist im Anspruch 1 gekennzeichnet. Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen. Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung näher erläutert.The invention is characterized in claim 1. Further developments of the invention result from the dependent claims. Exemplary embodiments of the invention are described below with reference to Drawing explained in more detail.

Es zeigen:

Fig. 1
eine Heizungsanlage, bei der der Erzeugerkreis und der Verbraucherkreis durch eine hydraulische Weiche entkoppelt sind, und
Fig. 2, 3
weitere Heizungsanlagen.
Show it:
Fig. 1
a heating system in which the generator circuit and the consumer circuit are decoupled by a hydraulic switch, and
2, 3
other heating systems.

Die Fig. 1 zeigt eine Heizungsanlage mit einem Erzeugerkreis 1, einem Verbraucherkreis 2 und einer hydraulischen Weiche 3 zur hydraulischen Entkopplung des Erzeugerkreises 1 und des Verbraucherkreises 2. Der Erzeugerkreis 1 umfasst eine Vorlaufleitung 4 und eine Rücklaufleitung 5, zwischen denen wenigstens ein Wärmeerzeuger 6 angeordnet ist. Zur Steuerung des durch den Erzeugerkreis 1 fliessenden Volumenstromes VE dient ein Mittel 7. In der Fig. 1 ist das Mittel 7 eine steuerbare Pumpe oder ein Drosselventil, die bzw. das in die Rücklaufleitung 5 des Erzeugerkreises 1 eingebaut ist. Der Verbraucherkreis 2 umfasst ebenfalls eine Vorlaufleitung 8 und eine Rücklaufleitung 9, zwischen denen ein einziger oder mehrere Wärmeverbraucher 10 angeordnet sind.1 shows a heating system with a generator circuit 1, a consumer circuit 2 and a hydraulic switch 3 for the hydraulic decoupling of the generator circuit 1 and the consumer circuit 2. The generator circuit 1 comprises a flow line 4 and a return line 5, between which at least one heat generator 6 is arranged is. A means 7 is used to control the volume flow V E flowing through the generator circuit 1. In FIG. 1, the means 7 is a controllable pump or a throttle valve which is built into the return line 5 of the generator circuit 1. The consumer circuit 2 also comprises a flow line 8 and a return line 9, between which a single or several heat consumers 10 are arranged.

Durch den Erzeugerkreis 1 fliesst der Volumenstrom VE, durch den Verbraucherkreis 2 fliesst der Volumenstrom VV. Sind die Volumenströme VE und VV verschieden, dann fliesst auch durch die hydraulische Weiche 3 ein Volumenstrom VW. Der Volumenstrom VW beträgt VW = VE - VV . Die positive Flussrichtung der Volumenströme ist in der Fig. 1 mit Pfeilen markiert. Die Grösse des von den Wärmeverbrauchern 10 benötigten Volumenstromes VV wird je nach Ausführung der Heizanlage durch verbrauchsseitig angeordnete Mischventile, Thermostatventile, Pumpen, Hähne, usw. bestimmt. Gemäss der Erfindung wird die Rücklauftemperatur im Erzeugerkreis 1 minimal, wenn der durch die hydraulische Weiche 3 fliessende Volumenstrom VW annähernd verschwindet.By the generating circuit 1, the volume flow V E flowing through the load circuit 2 flows to the volume flow V V. If the volume flows V E and V V are different, then a volume flow V W also flows through the hydraulic switch 3. The volume flow is V W V W = V E - V V . The positive flow direction of the volume flows is marked with arrows in FIG. 1. The size of the volume flow V V required by the heat consumers 10 is determined, depending on the design of the heating system, by mixing valves, thermostatic valves, pumps, taps, etc. arranged on the consumption side. According to the invention, the return temperature in the generator circuit 1 becomes minimal when the volume flow V W flowing through the hydraulic switch 3 almost disappears.

Es werden nun vier Temperaturmessprunkte TVE, TRE, TVV und TVE definiert: TVE bezeichnet die Temperatur in der Vorlaufleitung 4 des Erzeugerkreises 1, TVV bezeichnet die Temperatur in der Vorlaufleitung 8 des Verbraucherkreises 2, TRV bezeichnet die Temperatur in der Rücklaufleitung 5 des Verbraucherkreises 2 und TRE bezeichnet die Temperatur in der Rücklaufleitung 9 des Erzeugerkreises 1. Die Temperaturen TVE, TRE, TVV und TVE sind nicht unabhängig voneinander, sondern hängen ab vom Volumenstrom VW, der durch die hydraulische Weiche 3 fliesst. Diese Abhängigkeit wird erfindungsgemäss ausgenutzt, um den Volumenstrom VW zu minimieren.Four temperature measuring points TV E , TR E , TV V and TV E are now defined: TV E denotes the temperature in the flow line 4 of the generator circuit 1, TV V denotes the temperature in the flow line 8 of the consumer circuit 2, TR V denotes the temperature in the return line 5 of the consumer circuit 2 and TR E denotes the temperature in the return line 9 of the generator circuit 1. The temperatures TV E , TR E , TV V and TV E are not independent of one another, but depend on the volume flow V W caused by the hydraulic Soft 3 flows. This dependency is used according to the invention in order to minimize the volume flow V W.

Falls der Volumenstrom VW positiv ist, dann erfolgt eine Vorlaufbeimischung im Erzeugerkreis 1, d.h. dem von den Wärmeverbrauchern 10 in der Rücklaufleitung 9 zurückfliessenden Wasser wird vergleichsweise wärmeres Wasser aus der Vorlaufleitung 4 des Erzeugerkreises 1 beigemischt. Die Temperatur TRE in der Rücklaufleitung 5 des Erzeugerkreises 1 ist daher höher als die Temperatur TRV in der Rücklaufleitung 9 des Verbraucherkreises 2. Es gilt somit TRE > TRV und TVE = TVV . Falls der Volumenstrom VW negativ ist, erfolgt eine Rücklaufbeimischung im Verbraucherkreis 2. Dann wird der Vorlaufleitung 8 des Verbraucherkreises 2 vergleichsweise kühleres Wasser aus der Rücklaufleitung 9 des Verbraucherkreises 2 beigemischt. Es gilt somit TVE > TVV und TRE = TRV . Bei annähernd verschwindendem Volumenstrom VW durch die hydraulische Weiche 3 ergibt sich TVE = TVV und TRE = TRV : Der Erzeugerkreis 1 ist optimal an die vom Verbraucherkreis 2 diktierten Bedingungen TVV, TRV und VV angepasst. Im Erzeugerkreis 1 ist daher weder die Temperatur TRE noch die Temperatur TVE höher als nötig.If the volume flow V W is positive, then a flow is added in the generator circuit 1, ie the water flowing back from the heat consumers 10 in the return line 9 is mixed with comparatively warmer water from the flow line 4 of the generator circuit 1. The temperature TR E in the return line 5 of the generator circuit 1 is therefore higher than the temperature TR V in the return line 9 of the consumer circuit 2. Hence TR E > TR V and TV E = TV V . If the volume flow V W is negative, a return flow admixture takes place in the consumer circuit 2. Then, relatively cooler water from the return line 9 of the consumer circuit 2 is added to the flow line 8 of the consumer circuit 2. So TV E > TV V and TR E = TR V . When the volume flow V W through the hydraulic switch 3 almost disappears, the result is TV E = TV V and TR E = TR V : The generator circuit 1 is optimally adapted to the conditions TV V , TR V and V V dictated by the consumer circuit 2. In the generator circuit 1, therefore, neither the temperature TR E nor the temperature TV E is higher than necessary.

Bei einem ersten Ausführungsbeispiel der Erfindung sind alle vier Temperaturmesspunkte TVE, TRE, TVV und TVE mit einem Temperaturfühler bestückt. Die Temperaturen TVE, TRE, TVV und TVE werden von einem Steuer- und Regelgerät 11 erfasst. Das Steuer- und Regelgerät 11 steuert und/oder regelt das Mittel 7 zur Steuerung des im Erzeugerkreis 1 fliessenden Volumenstromes VE derart, dass der Volumenstrom VE verkleinert wird, sofern TRE > TRV ist und dass der Volumenstrom VE erhöht wird, sofern TVE > TVV ist. In a first embodiment of the invention, all four temperature measuring points TV E , TR E , TV V and TV E are equipped with a temperature sensor. The temperatures TV E , TR E , TV V and TV E are recorded by a control and regulating device 11. The control and regulating device 11 controls and / or regulates the means 7 for controlling the volume flow V E flowing in the generator circuit 1 in such a way that the volume flow V E is reduced, provided that TR E > TR V and that the volume flow V E is increased, if TV E > TV V.

Bei einem zweiten Ausführungsbeispiel der Erfindung sind wenigstens die beiden Temperaturmesspunkte TVE und TVV mit einem Temperaturfühler bestückt. Das Steuer- und Regelgerät 11 steuert und/oder regelt mit dem Mittel 7 den Volumenstrom VE nun derart, dass die Differenz TVE - TVV möglichst gering, aber grösser als ein positiver Wert dT1 ist. Die Regelung aufden Wert TVE - TVV = 0 ist nicht sinnvoll, da dann der Volumenstrom VW durch die Weiche 3 beliebig gross positiv werden könnte.In a second exemplary embodiment of the invention, at least the two temperature measuring points TV E and TV V are equipped with a temperature sensor. The control and regulating device 11 controls and / or regulates the volume flow V E with the means 7 in such a way that the difference TV E - TV V is as small as possible, but larger than a positive value dT 1 . The regulation on the value TV E - TV V = 0 is not sensible, since the volume flow V W through the switch 3 could then be of any size positive.

Bei einem dritten Ausführungsbeispiel der Erfindung sind wenigstens die beiden Temperaturmesspunkte TRE und TRV mit einem Temperaturfühler bestückt. Das Steuer- und Regelgerät 11 steuert und/oder regelt mit dem Mittel 7 den Volumenstrom VE nun derart, dass die Differenz TRE - TRV möglichst gering, aber grösser als ein Wert dT2 ist. Hier ist die Regelung auf den Wert TRE - TRV = 0 nicht sinnvoll, da dann der Volumenstrom VW durch die Weiche 3 beliebig gross negativ werden könnte.In a third exemplary embodiment of the invention, at least the two temperature measuring points TR E and TR V are equipped with a temperature sensor. The control and regulating device 11 controls and / or regulates the volume flow V E with the means 7 in such a way that the difference TR E - TR V is as small as possible, but larger than a value dT 2 . Here is the regulation on the value TR E - TR V = 0 not sensible, since the volume flow V W through the switch 3 could then become arbitrarily large negative.

Der Vorteil der Erfindung liegt einerseits darin, dass die Temperatur TRE auf der erzeugerseitigen Seite der Rücklaufleitung 5 so tief wie möglich ist. Dies hat zur Folge, dass bei einem modernen, als Brennwertkessel ausgebildeten Wärmeerzeuger 6 die Wände der Brennkammer so kühl wie möglich sind und daher die Kondensation der bei der Verbrennung entstehenden Abgase maximal und der Wärmeverlust durch entweichende warme Abgase minimal wird. Andererseits liegt ein Vorteil der Erfindung darin, dass die Vorlauftemperatur des Erzeugerkreises 1 so gering wie möglich gehalten werden kann, da dem Vorlauf kein oder nur wenig kühles Wasser beigemischt wird. Der Wirkungsgrad des Wärmeerzeugers 6 wird somit dank der Erfindung erhöht.The advantage of the invention is that the temperature TR E on the generator side of the return line 5 is as low as possible. The consequence of this is that, in a modern heat generator 6 designed as a condensing boiler, the walls of the combustion chamber are as cool as possible and therefore the condensation of the exhaust gases produced during combustion is maximal and the heat loss due to escaping warm exhaust gases is minimized. On the other hand, an advantage of the invention is that the flow temperature of the generating circuit 1 can be kept as low as possible, since no or only a little cool water is added to the flow. The efficiency of the heat generator 6 is thus increased thanks to the invention.

Bei den bisherigen Beispielen waren die Temperaturfühler in den Vor- und Rücklaufleitungen 4, 8, 5 und 9 angeordnet. In der Praxis kommt es häufig vor, dass der Temperaturfühler zur Messung der Temperatur TVE der Vorlaufleitung 4 des Erzeugerkreises 1 direkt im Wärmeerzeuger 6 angeordnet ist. Die erfindungsgemässe Lehre lässt sich auch dann anwenden, wenn einer der beiden Temperaturfühler zur Messung von TVE oder TVV und/oder einer der beiden Temperaturfühler zur Messung von TRE oder TRV in geeigneter Weise in der hydraulischen Weiche 3 plaziert ist.In the previous examples, the temperature sensors were arranged in the supply and return lines 4, 8, 5 and 9. In practice, it often happens that the temperature sensor for measuring the temperature TV E of the flow line 4 of the generator circuit 1 is arranged directly in the heat generator 6. The teaching according to the invention can also be used if one of the two temperature sensors for measuring TV E or TV V and / or one of the two temperature sensors for measuring TR E or TR V is suitably placed in the hydraulic switch 3.

Sind zwei oder mehr parallel angeordnete Wärmeerzeuger 6 vorhanden, dann kann ein einziges Mittel 7 zur Steuerung des Volumenstromes VE oder es können zwei oder mehr Mittel 7 zur Steuerung des Volumenstromes VE vorhanden sein, wie in den Fig. 2 und 3 gezeigt ist.If there are two or more heat generators 6 arranged in parallel, then there can be a single means 7 for controlling the volume flow V E or there can be two or more means 7 for controlling the volume flow V E , as shown in FIGS. 2 and 3.

Das Steuer- und Regelgerät 11 ist eingerichtet, die Heizungsanlage im quasistationären Betrieb oder bei langsam veränderlichen Verhältnissen in der beschriebenen Weise zu steuern oder zu regeln. Während der Anfahrphase der Heizungsanlage oder beispielsweise beim Übergang von Normaltemperatur auf Absenktemperatur kann es vorteilhaft sein, die erfindungsgemässe Regelung nicht einzusetzen, da sie dann eventuell kontraproduktiv wirken könnte.The control and regulating device 11 is set up, the heating system in quasi-stationary operation or at to control or regulate slowly changing conditions in the manner described. While the start-up phase of the heating system or, for example, when changing from normal temperature to Lowering temperature, it can be advantageous not to use the control according to the invention, since it could then be counterproductive.

Bei einem weiteren Ausführungsbeispiel der Erfindung ist nur ein einziger Temperaturfühler zur Messung der Temperatur TRE eingesetzt. Zur Bestimmung der Steuer- und/oder Regelwerte für das Mittel 7 zur Steuerung des erzeugerseitigen Volumenstromes VE ist vorgesehen, in regelmässigen oder unregelmässigen Abständen ein Verfahren mit den folgenden Schritten durchzuführen:

  • 1. Erhöhung des Volumenstromes VE.
  • 2. Erniedrigung des Volumenstromes VE in diskreten Schritten, bis die Temperatur TRE nicht mehr weiter abnimmt.
    • In a further embodiment of the invention, only a single temperature sensor is used to measure the temperature TR E. In order to determine the control and / or regulating values for the means 7 for controlling the volume flow V E on the generator side, a method with the following steps is provided at regular or irregular intervals:
  • 1. Increase the volume flow V E.
  • 2. Decrease in the volume flow V E in discrete steps until the temperature TR E no longer decreases.

    • Das Verfahren beruht auf der folgenden Idee: Im angestrebten stationären Zustand fliesst weder warmes Vorlaufwasser noch kaltes Rücklautwasser durch die hydraulische Weiche 3 hindurch: VW = 0. Die Erhöhung des Volumenstromes VE im ersten Schritt um beispielsweise 10% bewirkt daher, dass warmes Wasser durch die hydraulische Weiche 3 hindurch in die Rücklaufleitung 5 fliesst, daja der Volumenstrom VV durch die Wärmeverbraucher 10 unverändert bleibt. Somit erhöht sich die Temperatur TRE. Im zweiten Verfahrensschritt wird der Volumenstrom VE in diskreten Schritten, beispielsweise in Schritten von 2%, wieder reduziert. Gleichzeitig reduziert sich der warme Volumenstrom VW durch die hydraulische Weiche 3 wieder, so dass die Temperatur TRE wieder abnimmt. Die Temperatur TRE kann aber nur solange abnehmen, wie noch warmes Wasser durch die hydraulische Weiche 3 hindurch fliesst und dem kühleren Rücklaufwasser beigemischt wird. Nimmt die Temperatur TRE nicht mehr weiter ab, dann darf auch der Volumenstrom VE nicht mehr weiter reduziert werden, da sonst kaltes Wasser in umgekehrter Richtung durch die hydraulische Weiche 3 hindurch fliessen wurde.The process is based on the following idea: In the desired steady state, neither warm flow water nor cold return water flows through the hydraulic switch 3: V W = 0. The increase in the volume flow V E in the first step, for example by 10%, therefore causes warm water flows through the hydraulic switch 3 into the return line 5, since the volume flow V V through the heat consumers 10 remains unchanged. The temperature TR E thus increases. In the second process step, the volume flow V E is reduced again in discrete steps, for example in steps of 2%. At the same time, the warm volume flow V W is reduced again by the hydraulic switch 3, so that the temperature TR E decreases again. However, the temperature TR E can only decrease as long as warm water is still flowing through the hydraulic switch 3 and is mixed with the cooler return water. If the temperature TR E no longer decreases, then the volume flow V E may no longer be reduced, since otherwise cold water would flow through the hydraulic switch 3 in the opposite direction.

    Dieses Verfahren bietet den Vorteil, dass nur ein einziger Temperaturfühler erforderlich ist. Es ist vor allem dann anwendbar, wenn der verbraucherseitig benötigte Volumenstrom VV nicht allzu grossen Schwankungen unterliegt. Die Häufigkeit, mit der das Verfahren durchgeführt wird, ist deshalb bevorzugt an die Bedürfnisse der Benutzer angepasst. In der Praxis ist dieses Verfahren insbesondere dann interessant, wenn die Heizungsanlage nur einen einzigen Wärmeerzeuger 6 aufweist.This method has the advantage that only a single temperature sensor is required. It is particularly applicable when the volume flow V V required by the consumer is not subject to major fluctuations. The frequency with which the method is carried out is therefore preferably adapted to the needs of the users. In practice, this method is particularly interesting when the heating system has only a single heat generator 6.

    Claims (6)

    Heizungsanlage mit einem Erzeugerkreis (1) und einem Verbraucherkreis (2) mit einer gemeinsamen Vorlaufleitung (4, 8) und einer gemeinsamen Rücklaufleitung (5, 9), die durch eine hydraulische Weiche (3) verbunden sind, und mit wenigstens einem Mittel (7) zur Steuerung des im Erzeugerkreis (1) fliessenden Volumenstromes VE, dadurch gekennzeichnet, dass ein oder mehrere Temperaturfühler vorhanden sind, aus dessen bzw. deren Signalen sich Richtung und Grösse eines allenfalls durch die hydraulische Weiche (3) fliessenden Volumenstromes VW ableiten lässt, und dass das oder die Mittel (7) den im Erzeugerkreis (1) fliessenden Volumenstrom VE derart regeln, dass der durch die hydraulische Weiche (3) fliessende Volumenstrom VW möglichst gering ist.Heating system with a generator circuit (1) and a consumer circuit (2) with a common flow line (4, 8) and a common return line (5, 9), which are connected by a hydraulic switch (3), and with at least one means (7 ) for controlling the volume flow V E flowing in the generator circuit (1), characterized in that one or more temperature sensors are present, from the signals of which the direction and size of a volume flow V W possibly flowing through the hydraulic switch (3) can be derived , and that the means (7) regulate the volume flow V E flowing in the generator circuit (1) in such a way that the volume flow V W flowing through the hydraulic switch (3) is as low as possible. Heizungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass als Sensoren ein Temperaturfühler zur Messung der Temperatur TVE in der Vorlaufleitung (4) des Erzeugerkreises (1) sowie ein Temperaturfühler zur Messung der Temperatur TVV in der Vorlaufleitung (8) des Verbraucherkreises (2) vorhanden sind und dass das oder die Mittel (7) den Volumenstrom VE derart regeln, dass die Differenz TVE - TVV möglichst gering, aber grösser als ein positiver Wert dT1 ist.Heating system according to claim 1, characterized in that as sensors a temperature sensor for measuring the temperature TV E in the flow line (4) of the generator circuit (1) and a temperature sensor for measuring the temperature TV V in the flow line (8) of the consumer circuit (2) are present and that the means (7) regulate the volume flow V E in such a way that the difference TV E - TV V is as small as possible but greater than a positive value dT 1 . Heizungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass als Sensoren ein Temperaturfühler zur Messung der Temperatur TRE in der Rücklaufleitung (5) des Erzeugerkreises (4) sowie ein Temperaturfühler zur Messung der Temperatur TRV in der Rücklaufleitung (5) des Verbraucherkreises (2) vorhanden sind und dass das oder die Mittel (7) den Volumenstrom VE derart regeln, dass die Differenz TRE - TRV möglichst gering, aber grösser als ein positiver Wert dT2 ist.Heating system according to claim 1, characterized in that as sensors a temperature sensor for measuring the temperature TR E in the return line (5) of the generator circuit (4) and a temperature sensor for measuring the temperature TR V in the return line (5) of the consumer circuit (2) are present and that the means (7) regulate the volume flow V E in such a way that the difference TR E - TR V is as small as possible, but larger than a positive value dT 2 . Heizungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass als Sensoren ein Temperaturfühler zur Messung der Temperatur TVE in der Vorlaufleitung (4) des Erzeugerkreises (1), ein Temperaturfühler zur Messung der Temperatur TVV in der Vorlaufleitung (8) des Verbraucherkreises (2), ein Temperaturfühler zur Messung der Temperatur TRE in der Rücklaufleitung (5) des Erzeugerkreises (1) sowie ein Temperaturfühler zur Messung der Temperatur TRV in der Rücklaufleitung (9) des Verbraucherkreises (2) vorhanden sind und dass das oder die Mittel (7) den Volumenstrom VE verkleinern, sofern TRE > TRV ist und den Volumenstrom VE erhöhen, sofern TVE > TVV ist.Heating system according to claim 1, characterized in that as sensors a temperature sensor for measuring the temperature TV E in the flow line (4) of the generator circuit (1), a temperature sensor for measuring the temperature TV V in the flow line (8) of the consumer circuit (2) , a temperature sensor for measuring the temperature TR E in the return line (5) of the generator circuit (1) and a temperature sensor for measuring the temperature TR V in the return line (9) of the consumer circuit (2) are present and that the means (7 ) decrease the volume flow V E if TR E > TR V and increase the volume flow V E if TV E > TV V. Heizungsanlage nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass wenigstens einer der Temperaturfühler zur Messung der Temperaturen TRE, TRV, TVE oder TVV in der hydraulischen Weiche (3) plaziert ist.Heating system according to one of claims 2 to 4, characterized in that at least one of the temperature sensors for measuring the temperatures TR E , TR V , TV E or TV V is placed in the hydraulic switch (3). Heizungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass als Sensor ein Temperaturfühler zur Messung der Temperatur TRE in der Rücklaufleitung (5) des Erzeugerkreises (1) eingesetzt ist und dass wiederholt ein Verfahren zur Bestimmung der Steuer- und/oder Regelwerte für das Mittel oder die (7) zur Steuerung des erzeugerseitigen Volumenstromes VE vorgesehen ist, das die folgenden Schritte aufweist: 1. Erhöhung des Volumenstromes VE. 2. Erniedrigung des Volumenstromes VE in diskreten Schritten, bis die Temperatur TRE nicht mehr weiter abnimmt. Heating system according to claim 1, characterized in that a temperature sensor for measuring the temperature TR E in the return line (5) of the generator circuit (1) is used as a sensor and that a method for determining the control and / or regulating values for the agent or (7) is provided to control the volume flow V E on the generator side, which has the following steps: 1. Increase the volume flow V E. 2. Decrease in the volume flow V E in discrete steps until the temperature TR E no longer decreases.
    EP97106527A 1997-04-21 1997-04-21 Heating installation with mixing cylinder Expired - Lifetime EP0874200B1 (en)

    Priority Applications (3)

    Application Number Priority Date Filing Date Title
    DE59706553T DE59706553D1 (en) 1997-04-21 1997-04-21 Heating system with a low loss header
    EP97106527A EP0874200B1 (en) 1997-04-21 1997-04-21 Heating installation with mixing cylinder
    AT97106527T ATE214141T1 (en) 1997-04-21 1997-04-21 HEATING SYSTEM WITH A HYDRAULIC SWITCH

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP97106527A EP0874200B1 (en) 1997-04-21 1997-04-21 Heating installation with mixing cylinder

    Publications (2)

    Publication Number Publication Date
    EP0874200A1 true EP0874200A1 (en) 1998-10-28
    EP0874200B1 EP0874200B1 (en) 2002-03-06

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    EP97106527A Expired - Lifetime EP0874200B1 (en) 1997-04-21 1997-04-21 Heating installation with mixing cylinder

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    EP (1) EP0874200B1 (en)
    AT (1) ATE214141T1 (en)
    DE (1) DE59706553D1 (en)

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1154205A2 (en) * 2000-05-11 2001-11-14 Eugen Gerster Heat transport system with heat production installation having flow rate control
    EP2187136A2 (en) 2008-11-17 2010-05-19 Olaf Brüning Method for operating a system for transporting thermal energy through a liquid medium
    EP4249811A1 (en) * 2022-03-21 2023-09-27 Enerpipe GmbH Heat transfer station for a cold thermal network

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2634873A1 (en) * 1988-08-01 1990-02-02 Cerco Semip Device and method for regulating heat exchanges
    EP0427655A1 (en) * 1989-11-08 1991-05-15 Société SATEL SA Central heating installation
    DE9415749U1 (en) * 1994-09-29 1995-03-16 Sican Gmbh Device for controlling heating and boiler circuits in a heating system

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2634873A1 (en) * 1988-08-01 1990-02-02 Cerco Semip Device and method for regulating heat exchanges
    EP0427655A1 (en) * 1989-11-08 1991-05-15 Société SATEL SA Central heating installation
    DE9415749U1 (en) * 1994-09-29 1995-03-16 Sican Gmbh Device for controlling heating and boiler circuits in a heating system

    Cited By (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1154205A2 (en) * 2000-05-11 2001-11-14 Eugen Gerster Heat transport system with heat production installation having flow rate control
    EP1154205A3 (en) * 2000-05-11 2003-01-02 Eugen Gerster Heat transport system with heat production installation having flow rate control
    EP2187136A2 (en) 2008-11-17 2010-05-19 Olaf Brüning Method for operating a system for transporting thermal energy through a liquid medium
    DE102008057730A1 (en) 2008-11-17 2010-05-20 Brüning, Olaf Method for operating a system for transporting thermal energy over a liquid medium
    EP2187136A3 (en) * 2008-11-17 2014-09-10 Olaf Brüning Method for operating a system for transporting thermal energy through a liquid medium
    EP4249811A1 (en) * 2022-03-21 2023-09-27 Enerpipe GmbH Heat transfer station for a cold thermal network

    Also Published As

    Publication number Publication date
    DE59706553D1 (en) 2002-04-11
    ATE214141T1 (en) 2002-03-15
    EP0874200B1 (en) 2002-03-06

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