EP2795133B1 - Arrangement with storage element and heat supply system - Google Patents
Arrangement with storage element and heat supply system Download PDFInfo
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- EP2795133B1 EP2795133B1 EP12822971.3A EP12822971A EP2795133B1 EP 2795133 B1 EP2795133 B1 EP 2795133B1 EP 12822971 A EP12822971 A EP 12822971A EP 2795133 B1 EP2795133 B1 EP 2795133B1
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- pump
- storage element
- arrangement
- heat
- supply system
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- 238000005338 heat storage Methods 0.000 description 13
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- 238000003079 width control Methods 0.000 description 4
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- 230000020169 heat generation Effects 0.000 description 1
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Classifications
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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
- 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
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
- F24D19/1024—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
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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
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
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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
- F24D3/105—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system pumps combined with multiple way valves
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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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
- F24D2220/0242—Multiple way valves
Definitions
- the invention relates to an arrangement with a storage element and a heat supply system.
- heat generators such as boilers
- either the consumer circuit, the heat storage or both can be put into operation.
- the proposed system can only be operated so useful that the hot water tank is charged directly from the solid fuel boiler at the appropriate valve position, wherein in such a switching variant of the load circuit and the circulation pump are turned off. The resulting pumpless circulation extends the charging intervals.
- an oversupply of heat quantities can also be achieved by virtue of the fact that such heat supply system has additional heat sources, such as thermal solar collectors, switched on. In particular, it comes to gross mismatches between supply of heat and their decrease. In addition, the time course between heat generation and heat consumption is not congruent.
- JP S58 28 933 A It is proposed to connect a heat generator associated memory device with 2 lines with this.
- a pump In the line, which is connected to the output of the heat generator, a pump is arranged. Consequently, this pump is always in a media area with elevated temperature, which can adversely affect their life.
- the pump is followed by a valve unit, with the aid of which the connections of the storage device can be connected to the heated medium if required.
- the storage device can be mutually charged with heated medium.
- the respective other line is connected via the same valve unit with the return line of the heat generator, so that the heated medium from the storage device is always supplied to the heat generator.
- JP S58 28933 A It is proposed that the circulating pump connected downstream of a heat source in the supply line by a downstream 4/2-Wegevenil operate so that a certain number of radiators once from the first radiator starting with heated medium and once after switching the 4/2-way valve from the last radiator ago is supplied with heated medium.
- This arrangement has the goal to be able to exchange the supply and return line of a heat supply system with each other and to ensure in this way a uniform heating of all radiators.
- An extended proposal makes it possible to automatically carry out the corresponding switching at specified time intervals.
- Another proposal provides, upon reaching an upper limit temperature in the radiators by a heat sensor to provide a control signal to the control unit, which then interrupts the supply of the radiator.
- the arrangement described above is used only for switching the supply and return line in a conventional heating circuit in order to achieve a uniform heating of all circulating radiator. For a reversal of the flow direction in a feed line of an additional heat storage, the described arrangement is not suitable.
- a lower inertia heat sink requires a rapid response by a secondary hot water tank to approximately compensate for supply or lack of heat compared to the heating circuit of a heat supply system. This can not be achieved with the pump arrangements known from the prior art.
- the invention takes account of such heat supply systems, which are equipped with heat generators, are obtained by the amounts of heat from renewable energies and in which a so-called heat sink assumes the task of providing amounts of heat for the heating circuit.
- the arrangement according to the invention is also applicable in conventional heat supply systems, provided that a secondary heat storage is additionally arranged in these.
- the arrangement should be designed in such a way that by means of valves or taps a mutual connection to the supply and discharge line parts is made possible and so the conveying direction of the pump can be changed within short intervals.
- this has the advantage that only adjusting pulses with little expenditure of energy are necessary for the placement of the valves or taps, while the pump can convey media even after switching in each case in optimized operation.
- the pump In order to be able to operate the pump in an energy-optimized manner, it is controlled with optimized performance. That is, the pump is always provided the amount of energy that is necessary to comply with the required parameters.
- a control of the amounts of energy of the circulation pump by controlling the pump drive motor via a pulse width control, which is controlled by analog signals and determined on the basis of the amount of energy for the operation of the circulation pump.
- Such activation of the circulation pump may be carried out in parallel with or integrated into a control for the heat supply system.
- a pulse width control by means of a so-called switching regulator or a so-called controllable pulse modulation unit in the form of an electronic module.
- an electronic component of the SG3524 family is again particularly preferred because it can be regulated via an analog control signal. This provides the prerequisite for directly connecting an analog temperature sensor to the control unit of the circulating pump.
- control can also be controlled via an analog output of a central control of the heat supply system.
- a multi-stage pump or a pump cascade can be used, the drive can be carried out as described above.
- the necessary within the pump assembly switching unit is executed in the preferred case with a 4/2 valve. This connects in a switching position, the suction side of the pump with the heat generator and the pressure side of the Pump with the storage element. In the second switching position, the suction side of the pump is connected to the storage element and the pressure side to the line to the heat generator.
- the 4/2 valve a so-called ball valve, which has at least the two required switching positions and can be controlled with auxiliary power.
- the pump assembly may be configured in a split design depending on the design of the heat supply system in a split design with intermediate line sections or as a pump assembly in a compact design or as a pump assembly.
- a heat supply system of the type known per se consists of a heat generator 1, a heat consumer 2 and the lines connecting them 3 for the warm area (flow) and 4 for the cold area (return).
- a heating circulation pump 5 can be integrated in the heat supply system.
- line sections 6 and 7 are guided to a storage element 8 .
- a pump assembly 9 is also arranged, which loads the storage element 8 depending on the need or discharges.
- the storage element 8 may be connected to the line 3 , so that heated medium from the storage element 8 can be fed directly into the supply circuit.
- the pump assembly according to the invention in the line sections 6 and 7 consists of a pump 11, a 4/2-way valve 12, a backflow preventer 13 and the connecting lines 14,15 and 16.
- Fig. 2 is the 4/2-way valve 12 in a first switching position, which can also be referred to as 0 ° position.
- the switching element 17 then directs the medium from the line section 7 via the line 14 to the pump 11, further via the line 15, the backflow preventer 13 and the line 16 in the line 6. In this way, a heat consumer 2 by discharging a in Fig. 2 Memory element, not shown, are supplied with heated medium.
- the 4/2-valve 12 is connected so that loading a in Fig. 3 not shown storage element is possible.
- a heat generator 1 is heated via line 6, the 4/2-valve 12, the pump 11, the line 15, the backflow preventer 13 and the line 16 heated medium in the conduit 7 .
- the discharged from the storage element medium is pumped via line 10 in the direction of a heat consumer 2 .
- the backflow preventer 13 is arranged on the pressure side of the pump 11 and connected thereto via the line 15 . In this way, backflows are prevented in the line circuit, it does not matter whether the return flow would occur like a pulse or due to a back pressure created permanently.
- the pump 11 is preferably a power-controlled pump. Particularly preferred here is a pump control, which works with a pulse width control and the pump 11 can always provide the amount of energy that are required for the fulfillment of the task just.
- the control of the pump 11 can be realized via a separate control module or by a central control of the heat supply system. It is also possible to influence the flow of energy to the pump 11 by controlling interventions.
- the pump 11 is supplied with an analog signal, so that a control module or a central controller can generate a pulse-modulated oscillation therefrom.
- the pulse modulated oscillation is generated by an integrated switching regulator or a controlled pulse width modulator, wherein the modulator preferably recourse to circuits of group SG3524 or their derived model.
- the control of the module is preferably carried out with analog signals in a voltage range between 0 and 10 V.
- the switching regulator or modulator preferably operates at a frequency of 4 kHz.
- the 4/2-way valve 12 is replaced by other equivalent valve arrangements at the expense of certain disadvantages. For example, by an arrangement with two 3/2 valves, by an arrangement with four 2/2 valves or with an arrangement of several ball valves. It is ultimately important that a swap of the suction and the pressure side of the pump 11 with respect to the line sections 6 and 7 is effected.
- a 4/2 valve 12 in the embodiment is a ball valve because of the simple structure thereof and the reliable operation.
- the 4/2-valve 12 and the other circuits are each adjustable via control commands and power supply and require no manual operation.
- the non-return valve 13 can be designed in various ways. So it may for example be a device that works with a float or a device that is provided with a pivoting non-return valve. Another embodiment is that the closure body is spring loaded and the backflow preventer 13 is accordingly designed as a check valve.
- the inventively designed pump assembly is able to allow both in cooperation with a boiler as well as in cooperation with a heat sink effective control of the heating circuit.
- the known fluctuations in the energy supply of solar collectors integrated in heat supply systems can be compensated for by means of the pump assembly according to the invention and their control by the pump is switched in a conveying direction depending on the heat supply or heat removal, that it takes the heated circuit excess heated medium or the heating circuit the buffer storage excess heated medium supplies.
- the simultaneous pulse width modulated power supply of the pump ensures that it always works with the optimized volume flow and avoids an overshoot of the temperatures in the heating circuit.
- thermosensor which supplies an analogue measurement signal, at a location of the heating circuit which has been found to be optimal in order to realize in this way an operation of the heating circuit under optimum conditions.
- the pump arrangement described above thus has the advantage that it allows a simple operation of the pump in two flow directions and thereby the cost of components and the fluid mechanical design can be optimized. Furthermore, the energy input is minimized by the solution according to the invention such that the flow losses are kept low, valve controls are powered only when necessary and the pump contained in the arrangement receives only the amounts of energy that are just necessary for the performance of the task.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Central Heating Systems (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
Die Erfindung betrifft eine Anordnung mit einem Speicherelement und einer Wärmeversorgungsanlage.The invention relates to an arrangement with a storage element and a heat supply system.
Es ist bekannt, dass Wärmeerzeuger, wie Heizkessel, in ihrer Wärmeleistung höher dimensioniert werden müssen als der prognostizierte Gesamtbedarf an Wärme im entsprechenden Wärmeversorgungssystem. Dies deshalb, weil die Wärmeerzeuger in solchen Wärmeversorgungssystemen immer nach dem maximal notwendigen Wärmebedarf ausgelegt werden müssen.It is known that heat generators, such as boilers, have to be dimensioned higher in their heat output than the predicted total demand for heat in the corresponding heat supply system. This is because the heat generators in such heat supply systems always have to be designed according to the maximum necessary heat demand.
Wird ein Wärmeversorgungssystem, das nach dieser Auslegungsregel dimensioniert ist, mit einem Festbrennstoffkessel betrieben, ergeben sich daraus Schwierigkeiten bei der Wärmebilanzierung innerhalb einer solchen Anlage.If a heat supply system dimensioned according to this design rule is operated with a solid fuel boiler, this results in difficulties in heat balancing within such a plant.
Nach einem Vorschlag in
Abhängig von der Stellung der Dreiwegehähne können entweder der Verbraucherkreis, der Wärmespeicher oder beides in Betrieb genommen werden.Depending on the position of the three-way valves, either the consumer circuit, the heat storage or both can be put into operation.
Bei Betrieb des Verbraucherkreises gemeinsam mit dem Wärmespeicher ergibt sich ein Betriebsregime, das die notwendigen Flüssigkeitsmengen praktisch wahlfrei entweder dem Festbrennstoffkessel oder dem Wärmespeicher oder beiden entnimmt. Ein hydraulischer Ausgleich ist nicht vorgesehen. Mithin kann das vorgeschlagene System nur so sinnvoll betrieben werden, dass der Warmwasserspeicher bei entsprechender Ventilstellung vom Festbrennstoffkessel direkt aufgeladen wird, wobei bei einer solchen Schaltvariante der Verbraucherkreis und die Umwälzpumpe abgeschaltet sind. Der dabei entstehende pumpenlose Umlauf verlängert die Ladeintervalle.When operating the consumer circuit together with the heat storage results in an operating regime that takes the necessary quantities of liquid practically random either the solid fuel boiler or the heat storage or both. A hydraulic compensation is not provided. Thus, the proposed system can only be operated so useful that the hot water tank is charged directly from the solid fuel boiler at the appropriate valve position, wherein in such a switching variant of the load circuit and the circulation pump are turned off. The resulting pumpless circulation extends the charging intervals.
Der wesentlichste Nachteil dieses Wärmeversorgungssystems besteht deshalb darin, dass ein hydraulischer Ausgleich und eine Beauflagung des Wärmespeichers mit einem Druckstrom nicht möglich sind.The most significant disadvantage of this heat supply system is therefore that a hydraulic compensation and a Beauflagung the heat accumulator with a pressure flow are not possible.
Im Besonderen kann ein Überangebot an Wärmemengen auch dadurch zustande kommen, dass einem solchen Wärmeversorgungssystem weitere Wärmequellen, wie beispielsweise thermische Solarkollektoren, zugeschaltet sind. Insbesondere kommt es dabei zu groben Missverhältnissen zwischen Angebot an Wärmemengen und deren Abnahme. Hinzu kommt, dass der zeitliche Verlauf zwischen Wärmeerzeugung und Wärmeverbrauch nicht deckungsgleich ist.In particular, an oversupply of heat quantities can also be achieved by virtue of the fact that such heat supply system has additional heat sources, such as thermal solar collectors, switched on. In particular, it comes to gross mismatches between supply of heat and their decrease. In addition, the time course between heat generation and heat consumption is not congruent.
In
Eine ausschließliche Versorgung von Wärmeverbrauchern aus der Speichereinrichtung ist nicht möglich.An exclusive supply of heat consumers from the storage device is not possible.
Um dem abzuhelfen, sind in Wärmeversorgungssystemen Speicherelemente vorhanden, die bei einem temporären Überangebot an Wärmemengen die Möglichkeit bieten, diese Wärmemengen zwischenzuspeichern und sie später wieder abrufen zu können. Um dies zu ermöglichen, muss erwärmtes Medium bei einem Überangebot in Richtung zu dem Speicherelement gepumpt werden. Bei einem Fehlbedarf muss das gleiche Medium in umgekehrter Richtung von dem Speicherelement zurück in den Heizungskreis gepumpt werden.In order to remedy this, storage elements are present in heat supply systems that offer the possibility of a temporary oversupply of heat offer to buffer these amounts of heat and retrieve them later. In order to make this possible, heated medium must be pumped in the event of an oversupply in the direction of the storage element. In case of a lack of need the same medium must be pumped in the opposite direction from the storage element back into the heating circuit.
Wegen der bei hohen Medientemperaturen verminderten Lebensdauer von Umwälzpumpen werden diese seit einiger Zeit nur noch in dem Leitungsstrang eingefügt, der stets die niedrigere Temperatur hat. Das erfordert, dass zum Laden bzw. zum Entladen des Wärmespeichers zwei verschiedene Strömungsrichtungen notwendig sind.Because of the reduced at high media temperatures lifespan of circulation pumps for some time they are only inserted in the wiring harness, which always has the lower temperature. This requires that two different directions of flow are necessary for loading or unloading the heat storage.
Diese Aufgaben sind mit einer Umwälzpumpe, die gewöhnlich eine Kreiselpumpe ist und nur in eine Förderrichtung arbeiten kann, nicht zu erfüllen. Es sind deshalb bereits Wärmeversorgungssysteme ausgeführt worden, bei denen im Leitungskreis zwischen Wärmequelle und Wärmespeicher zwei Pumpen mit jeweils entgegengesetzter Förderrichtung parallel geschaltet sind. Diesen müssen allerdings Absperrventile zugeordnet sein, soll das Medium stets nur in eine bestimmte Richtung gefördert werden.These objects are not to be met with a circulating pump, which is usually a centrifugal pump and can only work in one conveying direction. It is therefore already been running heat supply systems in which two pumps are connected in parallel with each other in the line circuit between the heat source and heat storage with opposite flow direction. However, these must be assigned shut-off valves, the medium should always be promoted only in a particular direction.
Es ist auch bekannt, bei solchen parallel geschalteten Pumpenanordnungen in jedem Pumpenzweig ein elektrisch gesteuertes Zweiwege-Servoventil anzuordnen, um so einen Kurzschluss des Medienstroms über die jeweils im Stillstand befindliche Pumpe zu vermeiden.It is also known to arrange such an electrically controlled two-way servo valve in each parallel-connected pump assemblies in each pump branch, so as to avoid a short circuit of the media flow via the pump in each case at a standstill.
Solche Anordnungen sind aufwendig, zumal sie noch weiterer Steuereinrichtungen bedürfen, die einerseits die Leitungswege öffnen und schließen und andererseits die beiden Pumpen ansteuern.Such arrangements are expensive, especially since they require further control devices, on the one hand open and close the line paths and on the other hand, drive the two pumps.
Aus
Dieses System ist insofern nachteilig, dass im Fall der Zuordnung weiterer Wärmequellen wie auch bei der Anordnung mehrerer Leitungskreise zu Wärmeverbrauchern jeweils die gleiche Anordnung von Pumpen und Rückschlagventilen wieder vorgesehen werden muss. Mithin steigt der Aufwand bei komplexeren Systemen sehr stark an.This system is disadvantageous in that in the case of the assignment of further heat sources as well as in the arrangement of multiple circuits to heat consumers each have the same arrangement of pumps and check valves must be provided again. Thus, the complexity of complex systems increases very much.
In
Die oben beschriebene Anordnung dient ausschließlich dem Umschalten von Vor- und Rücklaufleitung in einem herkömmlichen Heizungskreislauf, um eine gleichmäßige Erwärmung aller im Kreislauf befindlichen Heizkörper zu erreichen. Für eine Umkehr der Strömungsrichtung in einer Speiseleitung eines zusätzlichen Wärmespeichers ist die beschriebene Anordnung nicht geeignet.The arrangement described above is used only for switching the supply and return line in a conventional heating circuit in order to achieve a uniform heating of all circulating radiator. For a reversal of the flow direction in a feed line of an additional heat storage, the described arrangement is not suitable.
Aus
Eine vergleichbare Anordnung ist aus einem Wärmeversorgungssystem Eco Zenith I 555 der Firma CTC AB, 34126 Ljungby, Schweden bekannt. Bei dieser Anlage werden zwischen beiden mit den Druckseiten verbundenen Pumpen noch zusätzlich Rückschlagventile angeordnet.A comparable arrangement is known from a heat supply system Eco Zenith I 555 CTC AB, 34126 Ljungby, Sweden. In this system, additional check valves are arranged between the two pumps connected to the pressure sides.
Trotz des vereinfachten Aufbaus hat diese Anordnung den Nachteil, dass die jeweils außer Betrieb befindliche Pumpe einen erheblichen Leitungswiderstand darstellt, der zur Erhöhung der Pumpenleistung zwingt. Ferner ist nicht auszuschließen, dass ein entsprechend großer Medienstrom beim Umströmen des Läufers der stillgesetzten Pumpe Korrosions- und Kavitationsschäden verursacht. Diese Nachteile verstärken sich noch, wenn zusätzlich zur Pumpe noch Rückschlagventile durchströmt werden müssen.Despite the simplified structure, this arrangement has the disadvantage that each out of service pump represents a significant line resistance, which forces to increase the pump power. Furthermore, it can not be ruled out that a correspondingly large flow of media when flowing around the rotor of the stopped pump causes corrosion and cavitation damage. These disadvantages are compounded when, in addition to the pump, non-return valves still have to be flowed through.
Neben den bei den einzelnen im Stand der Technik vorhandenen Lösungen angegebenen Nachteilen sind weitere Nachteile vorhanden. So bedürfen Systeme, die mit zwei voneinander unabhängigen Pumpen arbeiten, einer separaten Ansteuerung, wodurch der Steuerungsaufwand in solchen Wärmeversorgungssystemen zunimmt.In addition to the disadvantages indicated in the individual solutions available in the prior art, further disadvantages are present. For example, systems that use two independent pumps require separate control, which increases the amount of control required in such heat supply systems.
Sofern Kombinationen mit zwei Umwälzpumpen zusätzlich mit angesteuerten Ventilen ausgestattet sind, steigt der Steuerungsaufwand noch weiter an.If combinations with two circulating pumps are additionally equipped with actuated valves, the control effort increases even further.
Außerdem fehlt bei den einzelnen Komponenten der im Stand der Technik vorhandenen Anlagen die Synchronisation. Angesteuerte Ventile oder Pumpen erzeugen Schläge in den Leitungskreisen. Bei mehreren Lösungen fehlt der hydraulische Ausgleich.In addition, in the individual components of existing in the prior art systems lack synchronization. Controlled valves or pumps generate blows in the circuits. With several solutions the hydraulic compensation is missing.
In Anlagen, die als besonderen Schwerpunkt auf die Gewinnung erneuerbarer Energien mit Hilfe von solarthermischen Wärmequellen setzen, können die aus dem Stand der Technik bekannten Anlagen nicht den Anforderungen an einen maximalen Energiegewinn aus diesen Quellen entsprechen. Dazu ist es notwendig, bei der Bilanzierung der Wärmemengen innerhalb eines Wärmeversorgungssystems einen sekundären Wärmespeicher derart zu integrieren, dass dieser nach Bedarf und ohne Trägheit Wärmemengen in den Verbraucherkreis liefern oder aus dem Erzeugerkreis entnehmen kann. Die im Stand der Technik ebenfalls bekannten und als Wärmesenke in Heizungskreise integrierten Kombispeicher mit einem großen Wärmemengenpuffer können den Anforderungen nicht gerecht werden. Sie sind in ihrem Verhalten zu träge. Andererseits erfordert eine Wärmesenke mit geringerer Trägheit eine schnelle Reaktion durch einen sekundären Warmwasserspeicher, um Angebot oder Mangel an Wärmemengen gegenüber dem Heizungskreis eines Wärmeversorgungssystem annähernd auszugleichen. Das ist mit den aus dem Stand der Technik bekannten Pumpenanordnungen nicht zu erreichen.In plants which place a special emphasis on the production of renewable energies by means of solar thermal heat sources, the systems known from the prior art can not meet the requirements for a maximum Energy gain from these sources correspond. For this purpose, it is necessary to integrate in the balancing of the amounts of heat within a heat supply system, a secondary heat storage such that it can supply as needed and without inertia amounts of heat in the consumer circuit or remove from the generator circuit. The also known in the art and integrated as a heat sink in heating circuits combi memory with a large heat quantity buffer can not meet the requirements. They are too lazy in their behavior. On the other hand, a lower inertia heat sink requires a rapid response by a secondary hot water tank to approximately compensate for supply or lack of heat compared to the heating circuit of a heat supply system. This can not be achieved with the pump arrangements known from the prior art.
Es ist deshalb Aufgabe der Erfindung, eine Anordnung vorzuschlagen, die bei geringem Kosten-, installations- und Steuerungsaufwand die Aufgaben des Ladens und Entladens wenigstens eines Wärmespeichers in Wärmeversorgungssystemen übernehmen kann, die energie- und kostenoptimiert arbeitet, Druckstöße vermeidet, einen hydraulischen Ausgleich ermöglicht und hinsichtlich ihrer Integration in bestehende Anlagen in vielfacher Hinsicht angepasst werden kann.It is therefore an object of the invention to propose an arrangement that can take over the tasks of loading and unloading at least one heat storage in heat supply systems with low cost, installation and control, which works energy and cost optimized, pressure surges avoids, allows hydraulic compensation and be adapted in many ways with regard to their integration into existing plants.
Diese oben stehende Aufgabe wird gelöst mit einer Anordnung mit den Merkmalen des kennzeichnenden Teils des Patentanspruches 1 in Verbindung mit den Merkmalen des Oberbegriffes dieses Patentanspruches. Neben- und nachgeordnete Patentansprüche beschreiben Ausführungsformen der erfindungsgemäßen Anordnung.This object above is achieved with an arrangement having the features of the characterizing part of
In der nachstehenden Beschreibung, den Ausführungsbeispielen und den Patentansprüchen werden die nachstehend aufgeführten Begriffe mit folgendem Bedeutungsinhalt verwendet:
- Wärmeversorgungsaniage - ist eine Anordnung, die wenigstens aus einem Wärmeerzeuger, einem Wärmeverbraucher und einem über eine Pumpe ladbaren bzw. entladbaren Wärmespeicher verfügt.
- Pumpenanordnung - ist eine Zusammenstellung von wenigstens einer Pumpe beliebiger Bauart, Leitungsabschnitten und Ventilen zur Lösung der Aufgabe, mit einer Pumpeneinheit das Speicherelement zu laden bzw. zu entladen.
- Speicherelement - ist ein Volumenspeicher beliebiger Größe und Bauart, der mit einem Wärmemengen transportierenden Medium aufgeladen und wieder entladen werden kann.
- Rückflussverhinderer - ist ein Bauteil oder eine Baueinheit, die geeignet sind, den Medienstrom der Pumpe weitgehend unbehindert passieren zu lassen, bei dauerhaftem oder impulshaftem Gegenstrom in der Pumpenleitung den Leitungsstrang jedoch zu verschließen.
- Steuerbar - bedeutet, dass aufgrund willkürlicher Entscheidungen und Eingriffe in das Wärmeversorgungssystem die Inbetriebnahme der Pumpenanordnung sowie deren Stillsetzen bewirkt werden kann.
- Regelbar - bedeutet, dass das Inbetriebnehmen bzw. Stillsetzen der Pumpe von in der Anlage erfassten Messwerten, erarbeiteten Regelgrößen oder aufgrund von Behandlungsroutinen einer übergeordneten Regelanlage abhängig ist. Solcher Art Regelanlagen können in die Pumpenanordnung integriert oder als zentrale Regelanlage des Wärmeversorgungssystems ausgeführt sein.
- Wärmeversorgungsaniage - is an arrangement that has at least a heat generator, a heat consumer and a pump loadable or dischargeable heat storage.
- Pump assembly - is a collection of at least one pump of any type, line sections and valves to solve the task of loading or unloading the storage element with a pump unit.
- Storage element - is a volume storage of any size and design, which can be charged and discharged with a medium carrying heat quantities.
- Backflow preventer - is a component or a structural unit, which are suitable to allow the medium flow of the pump to pass largely unhindered, however, to close the wiring harness in the event of a permanent or impulsive countercurrent in the pump line.
- Controllable - means that due to arbitrary decisions and interventions in the heat supply system commissioning of the pump assembly and its shutdown can be effected.
- Controllable - means that commissioning or shutdown of the pump depends on measured values acquired in the system, calculated control variables or due to the handling routines of a higher-level control system. Such type of control systems can be integrated into the pump arrangement or designed as a central control system of the heat supply system.
Nach der Erfindung wird davon ausgegangen, dass eine weitere Optimierung des Einsatzes von Wärmeenergie in Wärmeversorgungsanlagen dadurch möglich ist, dass ein in einem solchen System zusätzlich angeordnetes Speicherelement trägheitsarm mit nur einer Pumpe geladen bzw. entladen wird. Die bisher verwendeten Anordnungen mit zwei Pumpen werden dadurch entbehrlich.According to the invention, it is assumed that a further optimization of the use of thermal energy in heat supply systems is possible in that a memory element additionally arranged in such a system is charged or discharged with little inertia with only one pump. The previously used arrangements with two pumps are thus unnecessary.
Dabei berücksichtigt die Erfindung vor allem solche Wärmeversorgungssysteme, die mit Wärmeerzeugern ausgestattet sind, durch die Wärmemengen aus emeuerbaren Energien gewonnen werden und in denen eine sogenannte Wärmesenke die Aufgabe der Bereitstellung von Wärmemengen für den Heizungskreis übernimmt. Gleichwohl ist die erfindungsgemäße Anordnung auch in herkömmlichen Wärmeversorgungssystemen anwendbar, sofern in diesen ein sekundärer Wärmespeicher zusätzlich angeordnet ist.In particular, the invention takes account of such heat supply systems, which are equipped with heat generators, are obtained by the amounts of heat from renewable energies and in which a so-called heat sink assumes the task of providing amounts of heat for the heating circuit. Nevertheless, the arrangement according to the invention is also applicable in conventional heat supply systems, provided that a secondary heat storage is additionally arranged in these.
Zusätzliche Widerstände durch eine zweite Pumpe, die durchströmt werden muss, entfallen ebenso, wie die Installations- und Wartungskosten für eine zweite Pumpe. Des Weiteren werden mögliche Schäden bei den jeweils außer Betrieb gesetzten Pumpen durch Kavitation, Korrosion und Alterung vermieden.Additional resistances through a second pump, which must be flowed through, as well as the installation and maintenance costs for a second pump. In addition, possible damage to the respective shutdown pumps due to cavitation, corrosion and aging is avoided.
Nach der Erfindung soll die Anordnung dergestalt ausgeführt sein, dass mithilfe von Ventilen oder Hähnen ein wechselseitiger Anschluss an die zu- bzw. abführenden Leitungsteile ermöglicht wird und so die Förderrichtung der Pumpe innerhalb kurzer Intervalle gewechselt werden kann. Nach der Erfindung hat dies den Vorteil, dass für das Stellen der Ventile oder Hähne nur Stellimpulse mit wenig Energieaufwand notwendig sind, während die Pumpe selbst nach dem Umschalten jeweils im optimierten Betrieb Medien fördern kann.According to the invention, the arrangement should be designed in such a way that by means of valves or taps a mutual connection to the supply and discharge line parts is made possible and so the conveying direction of the pump can be changed within short intervals. According to the invention, this has the advantage that only adjusting pulses with little expenditure of energy are necessary for the placement of the valves or taps, while the pump can convey media even after switching in each case in optimized operation.
Um die Pumpe energieoptimiert betreiben zu können, wird diese leistungsoptimiert angesteuert. Das heißt, es wird der Pumpe stets die Energiemenge bereitgestellt, die zur Einhaltung der geforderten Parameter notwendig ist.In order to be able to operate the pump in an energy-optimized manner, it is controlled with optimized performance. That is, the pump is always provided the amount of energy that is necessary to comply with the required parameters.
Besonders bevorzugt wird eine Steuerung der Energiemengen der Umwälzpumpe durch eine Steuerung des Pumpenantriebsmotors über eine Pulsweitensteuerung, die durch analoge Signale angesteuert ist und auf deren Grundlage die Energiemengen für den Betrieb der Umwälzpumpe ermittelt.Particularly preferred is a control of the amounts of energy of the circulation pump by controlling the pump drive motor via a pulse width control, which is controlled by analog signals and determined on the basis of the amount of energy for the operation of the circulation pump.
Besonders vorteilhaft ist dabei die Gewinnung der Analogsignale durch die Anordnung eines Temperaturgebers an einer Stelle im Verbraucherkreis des Wärmeversorgungssystems, die für die Ermittlung einer Solltemperatur bevorzugt in Frage kommt. Auf diese Weise kann das Laden beziehungsweise Entladen eines angeschlossenen Wärmespeichers nahezu ohne Trägheit gesteuert und damit die Einhaltung wärmetechnischer Vorgaben auf einfache Weise sichergestellt werden.Particularly advantageous is the recovery of the analog signals by the arrangement of a temperature sensor at a point in the consumer circuit of the heat supply system, which is preferred for determining a target temperature in question. In this way, the charging or discharging of a connected heat storage can be controlled almost without inertia and thus compliance with thermal requirements can be ensured in a simple manner.
Eine solche Ansteuerung der Umwälzpumpe kann parallel zu einer Steuerung für das Wärmeversorgungssystem oder integriert in dieselbe ausgeführt werden.Such activation of the circulation pump may be carried out in parallel with or integrated into a control for the heat supply system.
Bevorzugt wird dabei eine Steuerung der Energiemengen über eine so genannte Pulsweitensteuerung, da diese mit preiswerten Bauelementen bzw. Steuer- oder Regeleinheiten ausgeführt werden kann.In this case, it is preferable to control the amount of energy via a so-called pulse width control, since this can be carried out with inexpensive components or control or regulating units.
Besonders bevorzugt wird eine Pulsweitensteuerung mit Hilfe eines sogenannten Schaltreglers oder einer sogenannten steuerbaren Pulsmodulationseinheit in der Form einer elektronischen Baueinheit.Particularly preferred is a pulse width control by means of a so-called switching regulator or a so-called controllable pulse modulation unit in the form of an electronic module.
Hierbei wird wiederum die Verwendung eines elektronischen Bausteins der Familie SG3524 besonders bevorzugt, weil dieser über ein analoges Steuersignal regelbar ist. Damit ist die Voraussetzung gegeben, einen analog arbeitenden Temperatursensor auf die Steuereinheit der Umwälzpumpe direkt aufzuschalten.In this case, the use of an electronic component of the SG3524 family is again particularly preferred because it can be regulated via an analog control signal. This provides the prerequisite for directly connecting an analog temperature sensor to the control unit of the circulating pump.
Selbstverständlich kann eine solche Steuerung auch über einen Analogausgang einer zentralen Steuerung des Wärmeversorgungssystems angesteuert werden.Of course, such a control can also be controlled via an analog output of a central control of the heat supply system.
In Fällen, bei denen innerhalb der Wärmeversorgungssysteme längere Leitungswege zum Speicherelement auftreten oder durch das Speicherelement erhöhte Speisedrücke gefordert sind, kann eine mehrstufige Pumpe oder eine Pumpenkaskade verwendet werden, wobei die Ansteuerung wie oben beschrieben erfolgen kann.In cases where occur within the heat supply systems longer conduction paths to the storage element or by the storage element increased feed pressures are required, a multi-stage pump or a pump cascade can be used, the drive can be carried out as described above.
Die innerhalb der Pumpenanordnung notwendige Umschalteinheit wird im bevorzugten Fall mit einem 4/2-Ventil ausgeführt. Dieses verbindet in einer Schaltstellung die Saugseite der Pumpe mit dem Wärmeerzeuger und die Druckseite der Pumpe mit dem Speicherelement. In der zweiten Schaltstellung wird die Saugseite der Pumpe mit dem Speicherelement und die Druckseite mit der Leitung zum Wärmeerzeuger verbunden.The necessary within the pump assembly switching unit is executed in the preferred case with a 4/2 valve. This connects in a switching position, the suction side of the pump with the heat generator and the pressure side of the Pump with the storage element. In the second switching position, the suction side of the pump is connected to the storage element and the pressure side to the line to the heat generator.
Besonders bevorzugt wird für das 4/2-Ventil ein so genannter Kugelhahn, der wenigstens die zwei erforderlichen Schaltstellungen hat und mit Hilfsenergie ansteuerbar ist.Particularly preferred is for the 4/2 valve, a so-called ball valve, which has at least the two required switching positions and can be controlled with auxiliary power.
Anstelle eines 4/2-Ventils können zwei 3/2-Ventile, vier 2/2-Ventile oder auch Anordnungen mit Kugelhähnen eingesetzt werden.Instead of a 4/2 valve, two 3/2 valves, four 2/2 valves or ball valve arrangements can be used.
Zum Schutz des Wärmeversorgungssystems und der Pumpe wird dieser ein Rückflußverhinderer vor- oder nachgeschaltet. Bevorzugt wird hierbei die Anordnung nach dem druckseitigen Anschluss der Pumpe.To protect the heat supply system and the pump this is a backflow preventer upstream or downstream. In this case, preference is given to the arrangement according to the pressure-side connection of the pump.
Die Pumpenanordnung kann in Abhängigkeit von der Ausführung des Wärmeversorgungssystems in aufgelöster Bauweise mit zwischengeschalteten Leitungsabschnitten oder als Pumpenanordnung in Kompaktbauweise oder als Pumpenanordnung in Blockbauweise ausgeführt sein.The pump assembly may be configured in a split design depending on the design of the heat supply system in a split design with intermediate line sections or as a pump assembly in a compact design or as a pump assembly.
Die Erfindung wird nachstehend anhand einiger Ausführungsbeispiele und Zeichnungen näher erläutert. Dabei zeigen:
- Fig. 1 -
- eine schematische Darstellung eines Wärmeversorgungssystems mit einem an diesem angeordneten Speicherelement.
- Fig. 2 -
- eine schematische Darstellung der erfindungsgemäßen Pumpenanordnung unter Verwendung eines 4/2-Ventils in einer Schaltstellung, bei der eine Pumpe Medienstrom in Richtung einer Wärmequelle fördert.
- Fig. 3 -
- die in
Fig. 2 gezeigte schematische Darstellung mit einer Schaltstellung des Wegeventils, bei der die Pumpe einen Medienstrom in Richtung zu einem angeschlossenen Speicherelement fördert.
- Fig. 1 -
- a schematic representation of a heat supply system with a memory element arranged on this.
- Fig. 2 -
- a schematic representation of the pump assembly according to the invention using a 4/2-valve in a switching position, in which a pump promotes media flow in the direction of a heat source.
- Fig. 3 -
- in the
Fig. 2 shown schematic representation with a switching position of the directional control valve, in which the pump promotes a flow of media in the direction of a connected storage element.
Ein Wärmeversorgungssystem der an sich bekannten Bauart besteht aus einem Wärmeerzeuger 1, einem Wärmeverbraucher 2 und den diese verbindenden Leitungen 3 für den warmen Bereich (Vorlauf) und 4 für den kalten Bereich (Rücklauf).A heat supply system of the type known per se consists of a
Zusätzlich kann in das Wärmeversorgungssystem eine Heizungsumwälzpumpe 5 integriert sein.In addition, a heating circulation pump 5 can be integrated in the heat supply system.
Von der Leitung 4 sind Leitungsabschnitte 6 und 7 zu einem Speicherelement 8 geführt. Zwischen den Leitungsabschnitten 6 und 7 ist zudem eine Pumpenanordnung 9 angeordnet, die das Speicherelement 8 abhängig vom Bedarf lädt oder entlädt.From the
Über eine Verbindungsleitung 10 kann das Speicherelement 8 mit der Leitung 3 verbunden sein, sodass vom Speicherelement 8 erwärmtes Medium direkt in den Versorgungskreislauf eingespeist werden kann.Via a connecting
Die erfindungsgemäße Pumpenanordnung in den Leitungsabschnitten 6 und 7 besteht aus einer Pumpe 11, einem 4/2-Ventil 12, einem Rückflussverhinderer 13 und den Verbindungsleitungen 14,15 und 16. The pump assembly according to the invention in the
In
In der in
Der Rückflussverhinderer 13 ist an der Druckseite der Pumpe 11 angeordnet und mit dieser über die Leitung 15 verbunden. Auf diese Weise werden Rückströmungen im Leitungskreis verhindert, wobei es nicht darauf ankommt, ob die Rückströmung impulsartig oder aufgrund eines entstandenen Gegendruckes dauerhaft entstehen würde.The
Für die Erfindung kommt es nicht darauf an, auf welche Weise und mit welchen Anschlussarten die Pumpenanordnung mit dem Wärmeversorgungssystem verbunden ist. Dies betrifft insbesondere die Einspeisungspunkte, an die der Leitungsabschnitte 6 und die Leitung 10 angeschlossen sind. Ebenso wenig ist für die Erfindung bedeutsam, ob die Leitung 10 im System vorhanden ist.For the invention, it does not matter in which way and with which connection types the pump arrangement is connected to the heat supply system. This applies in particular to the feed points to which the
Die Pumpe 11 ist bevorzugt eine leistungsgesteuerte Pumpe. Besonders bevorzugt ist hierbei eine Pumpensteuerung, die mit einer Pulsweitensteuerung arbeitet und der Pumpe 11 stets die Energiemengen bereitstellen kann, die für die Erfüllung der Aufgabe gerade erforderlich sind.The
Die Ansteuerung der Pumpe 11 kann über ein eigenes Steuerungsmodul oder durch eine zentrale Steuerung des Wärmeversorgungssystems realisiert sein. Es ist ebenso möglich, durch steuernde Eingriffe auf den Energiefluss zur Pumpe 11 einzuwirken.The control of the
Die Pumpe 11 wird mit einem analogen Signal beaufschlagt, sodass ein Steuerungsmodul oder eine zentrale Steuerung daraus eine pulsmodulierte Schwingung erzeugen kann.The
Die pulsmodulierte Schwingung wird durch einen integrierten Schaltregler oder einen gesteuerten Pulsweitenmodulator erzeugt, wobei beim Modulator vorzugsweise auf Schaltkreise der Gruppe SG3524 oder deren abgeleitete Modell zurückgegriffen wird.The pulse modulated oscillation is generated by an integrated switching regulator or a controlled pulse width modulator, wherein the modulator preferably recourse to circuits of group SG3524 or their derived model.
Die Ansteuerung des Bausteins erfolgt vorzugsweise mit analogen Signalen in einem Spannungsbereich zwischen 0 und 10 V. Der Schaltregler beziehungsweise Modulator arbeitet vorzugsweise mit einer Frequenz von 4 kHz.The control of the module is preferably carried out with analog signals in a voltage range between 0 and 10 V. The switching regulator or modulator preferably operates at a frequency of 4 kHz.
Das 4/2-Ventil 12 ist durch andere gleichwirkende Ventilanordnungen unter Inkaufnahme gewisser Nachteile ersetzbar. So beispielsweise durch eine Anordnung mit zwei 3/2-Ventilen, durch eine Anordnung mit vier 2/2-Ventilen oder auch mit einer Anordnung aus mehreren Kugelhähnen. Dabei kommt es letztlich darauf an, dass ein Vertauschen der Saug- und der Druckseite der Pumpe 11 gegenüber den Leitungsabschnitten 6 und 7 bewirkt wird.The 4/2-
Besonders bevorzugt wird jedoch ein 4/2-Ventil 12 in der Ausführungsform als Kugelhahn wegen des einfachen Aufbaus desselben und der zuverlässigen Betriebsweise.However, particularly preferred is a 4/2
Auch das 4/2-Ventil 12 bzw. die anderen Schaltungsanordnungen sind über Steuerbefehle und Energiezufuhr jeweils stellbar und bedürfen keiner manuellen Bedienung.Also, the 4/2-
Der Rückflussverhinderer 13 kann auf verschiedene Weise ausgeführt sein. So kann es beispielsweise eine Einrichtung sein, die mit einem Schwebekörper arbeitet oder eine Einrichtung, die mit einer schwenkbaren Rückschlagklappe versehen ist. Eine weitere Ausführungsform besteht darin, dass der Verschlusskörper federbelastet und der Rückflussverhinderer 13 demgemäß als Rückschlagventil ausgeführt ist.The
Die erfindungsgemäß ausgeführte Pumpenanordnung ist in der Lage, sowohl im Zusammenwirken mit einem Heizkessel als auch im Zusammenwirken mit einer Wärmesenke eine wirksame Steuerung des Heizkreises zu ermöglichen.The inventively designed pump assembly is able to allow both in cooperation with a boiler as well as in cooperation with a heat sink effective control of the heating circuit.
Insbesondere die bekannten Schwankungen der Energiebereitstellung der in Wärmeversorgungssystemen integrierten Solarkollektoren kann mit Hilfe der erfindungsgemäßen Pumpenanordnung und deren Steuerung ausgeglichen werden, indem je nach Wärmezufuhr oder Wärmeentzug die Pumpe so in eine Förderrichtung geschaltet wird, dass sie dem Heizungskreis überschüssiges erwärmtes Medium entnimmt oder dem Heizungskreis aus dem Pufferspeicher überschüssiges erwärmtes Medium zuführt.In particular, the known fluctuations in the energy supply of solar collectors integrated in heat supply systems can be compensated for by means of the pump assembly according to the invention and their control by the pump is switched in a conveying direction depending on the heat supply or heat removal, that it takes the heated circuit excess heated medium or the heating circuit the buffer storage excess heated medium supplies.
Die gleichzeitig wirkende pulsweitenmodulierte Energieversorgung der Pumpe bewirkt, dass diese stets mit dem optimierten Volumenstrom arbeitet und ein Ãœberschwingen der Temperaturen im Heizungskreis vermieden wird.The simultaneous pulse width modulated power supply of the pump ensures that it always works with the optimized volume flow and avoids an overshoot of the temperatures in the heating circuit.
Es ist möglich, einen Temperatursensor, der ein analoges Messsignal liefert, an einer Stelle des Heizungskreises anzuordnen, die als optimal festgestellt wurde, um auf diese Weise einen Betrieb des Heizungskreises unter optimalen Bedingungen zu realisieren.It is possible to arrange a temperature sensor, which supplies an analogue measurement signal, at a location of the heating circuit which has been found to be optimal in order to realize in this way an operation of the heating circuit under optimum conditions.
Die oben beschriebene Pumpenanordnung hat also den Vorteil, dass sie auf einfache Weise einen Betrieb der Pumpe in zwei Strömungsrichtungen ermöglicht und dabei der Aufwand an Bauteilen sowie die strömungsmechanische Auslegung optimiert werden kann. Des weiteren wird der Energieeinsatz durch die erfindungsgemäße Lösung dergestalt minimiert, dass die Strömungsverluste gering gehalten werden, Ventilsteuerungen nur wenn notwendig mit Energie versorgt werden und die in der Anordnung enthaltene Pumpe nur die Energiemengen erhält, die für die Erfüllung der Aufgabe gerade notwendig sind.The pump arrangement described above thus has the advantage that it allows a simple operation of the pump in two flow directions and thereby the cost of components and the fluid mechanical design can be optimized. Furthermore, the energy input is minimized by the solution according to the invention such that the flow losses are kept low, valve controls are powered only when necessary and the pump contained in the arrangement receives only the amounts of energy that are just necessary for the performance of the task.
- 11
- Wärmeerzeugerheat generator
- 22
- Wärmeverbraucherheat consumer
- 33
- Leitungmanagement
- 44
- Leitungmanagement
- 55
- Heizungsumwälzpumpeheat circulating pump
- 66
- Leitungsabschnittline section
- 77
- Leitungsabschnittline section
- 88th
- Speicherelementstorage element
- 99
- Pumpenanordnungpump assembly
- 1010
- Verbindungsleitungconnecting line
- 1111
- Pumpepump
- 1212
- 4/2-Ventil4/2-valve
- 1313
- RückflussverhindererBackflow preventer
- 1414
- Leitungmanagement
- 1515
- Leitungmanagement
- 1616
- Leitungmanagement
- 1717
- Schaltelementswitching element
Claims (10)
- An arrangement with a storage element (8) and a heat supply system, wherein a heat generator (1) is connected to a heat consumer (2) in a first line circuit and a circulation of a heating medium can be achieved between the latter with a heating circulation pump (5)
and, with a second line circuit, a storage element (8) and a pump arrangement (9) can be connected to the first line circuit, that a media flow from the storage element to the heat consumer can be achieved as required with the aid of the pump arrangement and the storage element (8) disposed in the second line circuit can thus be discharged,
characterised in that,
with the aid of the pump arrangement (9), a media flow can be achieved as required from the heat generator (1) to the storage element (8) and the storage element disposed in the second line circuit can thus be charged,
the pump arrangement (9) is an arrangement comprising a pump (11), a switch-over unit and a backflow preventer (13) and the latter interact with one another in such a way that,- in a first position of the switch-over unit, the pump (11) is connected - at the suction side - to the storage element (8) and at the pressure side to the first line circuit, wherein medium with a low temperature is fed to the latter from the storage element (8),- in a second position of the switch-over unit, the pump (11) is connected - at the pressure side - to the storage element (8) and at the suction side to the first line circuit, wherein medium with a low temperature is extracted from the latter and delivered by the pump (11) into the storage element (8). - The arrangement for operating a storage element (8) in a heat supply system according to claim 1,
characterised in that
the pump (11) is controlled or regulated in terms of its output by means pulse width modulation (PWM) as a function of the magnitude of analog input signals. - The arrangement for operating a storage element (8) in a heat supply system according to claim 2,
characterised in that
the control or regulation of the pump (11) takes place by supplying the latter with at least one analog signal. - The arrangement for operating a storage element (8) in a heat supply system according to any one of claims 1 to 3,
characterised in that
the pump (11) is constituted multi-stage or as a pump cascade with at least one further pump. - The arrangement for operating a storage element in a heat supply system according to any one of claims 1 to 4,
characterised in that
the switch-over unit is an arrangement which, without changing the rotational direction or delivery direction of the pump (11), enables switching-over of line connections in the second line circuit and at least two delivery directions of the media flow for charging and discharging the storage element. - The arrangement for operating a storage element (8) in a heat supply system according to claim 5,
characterised in that
the switch-over unit is constituted with a 4/2-valve (12) or a 4/2-stopcock. - The arrangement for operating a storage element (8) in a heat supply system according to claim 6,
characterised in that
the switch-over unit is constituted with two 3/2-valves, two 3/2-stopcocks or with four 2/2-valves or four 2/2-stopcocks. - The arrangement for operating a storage element (8) in a heat supply system according to any one of claims 6 or 7,
characterised in that
the valves or stopcocks can be actuated with auxiliary energy. - The arrangement for operating a storage element (8) in a heat supply system according to any one of claims 1 to 8,
characterised in that
the backflow preventer (13) is located upstream or downstream of the pump (11) or of the pump cascade. - The arrangement for operating a storage element (8) in a heat supply system according to claim 9,
characterised in that
the backflow preventer (13) is constituted with a flow-controlled float and/or a flow-controlled flap and/or with a flow-controlled and spring-loaded element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SI201230526A SI2795133T1 (en) | 2011-12-22 | 2012-12-21 | Arrangement with storage element and heat supply system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102011056866A DE102011056866A1 (en) | 2011-12-22 | 2011-12-22 | Pump arrangement for operating a storage element in a heat supply system |
PCT/EP2012/005337 WO2013091891A2 (en) | 2011-12-22 | 2012-12-21 | Pump arrangement for operation of a storage element in a heat supply system |
Publications (2)
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EP2795133A2 EP2795133A2 (en) | 2014-10-29 |
EP2795133B1 true EP2795133B1 (en) | 2016-04-06 |
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EP12822971.3A Active EP2795133B1 (en) | 2011-12-22 | 2012-12-21 | Arrangement with storage element and heat supply system |
Country Status (9)
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EP (1) | EP2795133B1 (en) |
DE (1) | DE102011056866A1 (en) |
DK (1) | DK2795133T3 (en) |
EA (1) | EA027321B1 (en) |
ES (1) | ES2579152T3 (en) |
HU (1) | HUE027816T2 (en) |
PL (1) | PL2795133T3 (en) |
SI (1) | SI2795133T1 (en) |
WO (1) | WO2013091891A2 (en) |
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RU2748956C1 (en) * | 2020-01-20 | 2021-06-02 | Вадим Сергеевич Рыжов | Method for heat power control in heating system with solid fuel boiler |
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Publication number | Priority date | Publication date | Assignee | Title |
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CH342354A (en) * | 1955-01-27 | 1959-11-15 | Hilding Brosenius Karl | Central heating system |
JPS5828933A (en) * | 1981-08-13 | 1983-02-21 | Matsushita Electric Ind Co Ltd | Radiation type space heater |
DE9205301U1 (en) * | 1992-04-16 | 1992-07-16 | Kaufhold, Franz, 3500 Kassel | Heating circuit system with a solid fuel boiler... |
DE4409883C2 (en) | 1994-03-18 | 1997-08-14 | Flies Fernando Dipl Ing | Process for operating a heating system as required |
DE19706067A1 (en) * | 1997-02-17 | 1998-08-20 | Paul Schmidhuber | Heating system control method for biomass burner e.g. for wood burning system |
DE102006042905B3 (en) | 2006-09-13 | 2008-02-07 | Franz Josef Eller | Accumulator arrangement for storing thermal energy bounded in water, has pipe line, pumps and switching valves controlled together in opposite conveying directions to supply storage medium from accumulator areas to other areas |
JP2010144938A (en) * | 2008-12-16 | 2010-07-01 | Mitsubishi Electric Corp | Heat pump water heater and method for operating the same |
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2011
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2012
- 2012-12-21 DK DK12822971.3T patent/DK2795133T3/en active
- 2012-12-21 WO PCT/EP2012/005337 patent/WO2013091891A2/en active Application Filing
- 2012-12-21 SI SI201230526A patent/SI2795133T1/en unknown
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- 2012-12-21 EP EP12822971.3A patent/EP2795133B1/en active Active
- 2012-12-21 EA EA201400732A patent/EA027321B1/en not_active IP Right Cessation
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WO2013091891A4 (en) | 2014-01-03 |
HUE027816T2 (en) | 2016-11-28 |
WO2013091891A2 (en) | 2013-06-27 |
EA201400732A1 (en) | 2014-12-30 |
DK2795133T3 (en) | 2016-07-18 |
PL2795133T3 (en) | 2016-09-30 |
EP2795133A2 (en) | 2014-10-29 |
DE102011056866A1 (en) | 2013-07-25 |
SI2795133T1 (en) | 2016-05-31 |
ES2579152T3 (en) | 2016-08-05 |
WO2013091891A3 (en) | 2013-10-10 |
EA027321B1 (en) | 2017-07-31 |
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