DE19713462A1 - Circuit arrangement for heating utility water - Google Patents

Circuit arrangement for heating utility water

Info

Publication number
DE19713462A1
DE19713462A1 DE19713462A DE19713462A DE19713462A1 DE 19713462 A1 DE19713462 A1 DE 19713462A1 DE 19713462 A DE19713462 A DE 19713462A DE 19713462 A DE19713462 A DE 19713462A DE 19713462 A1 DE19713462 A1 DE 19713462A1
Authority
DE
Germany
Prior art keywords
heating
hot water
water heating
heat pump
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19713462A
Other languages
German (de)
Inventor
Harald Koenig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOENIG WAERMEPUMPEN GmbH
Original Assignee
KOENIG WAERMEPUMPEN GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KOENIG WAERMEPUMPEN GmbH filed Critical KOENIG WAERMEPUMPEN GmbH
Priority to DE19713462A priority Critical patent/DE19713462A1/en
Publication of DE19713462A1 publication Critical patent/DE19713462A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

Where the power performance of the heat pump is greater than required, the energy content which exceeds the extraction capacity of the utility water heat exchanger, is controlled so that this excess energy is fed into a buffer store, preferably into a radiator buffer store. Heating the water takes place in a store with integrated heat exchanger according to the storage loading principle whose power transfer can be less than the heating power produced by the heat pump. Heating the water takes place on the through-flow principle through a heat exchanger integrated in the store and whose power transfer is less than the heating power produced by the heat pump.

Description

Es ist bekannt, daß Brauchwasser mittels Wärmepumpen erwärmt werden kann. Bei Heizungswärmepumpen (1) kann dies durch einen im Kältekreis der Wärmepumpe angeordneten Wärmeaustauscher (zusätzlicher Kondensator) oder durch einen sekundär angeordneten Wärmeaustauscher (2), der auf der Primärseite von Heizungswasser und auf der Sekundärseite von Brauchwasser durchströmt wird, erfolgen. Dabei ist es unerheblich, ob der Sekundärwärmeaustauscher (2) im Brauchwasserspeicher (3) (Fig. 1) oder extern angeordnet ist (Fig. 2).It is known that domestic water can be heated by means of heat pumps. In the case of heating heat pumps ( 1 ), this can be done by a heat exchanger (additional condenser) arranged in the cooling circuit of the heat pump or by a secondary heat exchanger ( 2 ) through which heating water flows on the primary side and domestic water on the secondary side. It is irrelevant whether the secondary heat exchanger ( 2 ) is arranged in the domestic hot water tank ( 3 ) ( Fig. 1) or externally ( Fig. 2).

Wenn die von der Wärmepumpe bereitgestellte Energie sehr groß ist, wie dies z. B. im Sommer der Fall ist, muß diese gesamte Energie auch an das Brauchwasser abgeführt werden, da sonst die Verdichter einen hohen Überdruck erzeugen, weshalb diese dann abschalten, ohne die beabsichtigte Wassererwärmung ausreichend sichergestellt zu haben. Diesem Problem wird durch größere Leitungsquerschnitte, große Pumpenleistungen oder anderen technischen Lösungen begegnet, die einen ausreichenden Volumenstrom gewährleisten. Dies ist aufwendig und teuer. Eine bessere Lösung wird durch die im Schutzanspruch 1 aufgeführten Merkmale erreicht.If the energy provided by the heat pump is very large, e.g. B. is the case in summer, this entire energy must also be dissipated to the process water, otherwise the compressors generate a high excess pressure, which is why they then switch off without having sufficiently ensured the intended water heating. This problem is countered by larger pipe cross-sections, large pump capacities or other technical solutions that ensure a sufficient volume flow. This is complex and expensive. A better solution is achieved by the features listed in protection claim 1 .

Die erzielten Vorteile bestehen insbesondere darin, daß die Wärmepumpe (1) bei Erreichen der Grenzwerte (Temperatur/Druck) nicht abschalten muß, solange der Pufferspeicher (5) noch nicht vollständig aufgeheizt ist. Da nicht immer die volle Leistung zur Brauchwassererwärmung übertragen werden muß, sind kleinere Volumenströme ausreichend, was geringere Material- und Energiekosten ermöglicht.The advantages achieved are, in particular, that the heat pump ( 1 ) does not have to switch off when the limit values (temperature / pressure) are reached, as long as the buffer store ( 5 ) is not yet fully heated. Since the full power for domestic water heating does not always have to be transferred, smaller volume flows are sufficient, which enables lower material and energy costs.

Ein weiterer Vorteil besteht darin, daß durch die Nutzung des Pufferspeichers (5) eine größere Energiereserve zur Brauchwassererwärmung vorrätig ist.Another advantage is that a larger energy reserve for heating domestic water is available through the use of the buffer store ( 5 ).

Ein Ausführungsbeispiel ist in der Zeichnung (Fig. 1) dargestellt und wird im folgenden näher beschrieben.An embodiment is shown in the drawing ( Fig. 1) and will be described in more detail below.

Die Brauchwassererwärmung im Brauchwasserbehälter (3) erfolgt während der Heizperiode als Vorrangschaltung, in dem die Stellglieder (4) so angesteuert werden, daß normalerweise der Weg A/AB offen und der Weg B/AB geschlossen ist. Das warme Heizungswasser/Vorlauf wird durch die Umwälzpumpe M2 (7) über die Stellglieder (4) umgewälzt und gibt dabei Wärme über den Wärmeaustauscher (2) an das Brauchwasser ab. Sobald vorgegebene Grenzwerte erreicht werden, wird ein Teil des Heizungswassers durch die Umwälzpumpe M1 (6) in den Heizungspuffer (5) gebracht und kann so für die Heizung (8) genutzt werden. Die Wärmepumpe (1) läuft solange, bis Brauchwasserbehälter (3) und Pufferspeicher (5) die vorgegebene Temperatur erreicht haben. Somit wird während der Heizperiode immer ausreichend warmes Brauchwasser zur Verfügung gestellt.The hot water heating in the hot water tank ( 3 ) takes place during the heating period as a priority circuit, in which the actuators ( 4 ) are controlled so that path A / AB is normally open and path B / AB is closed. The warm heating water / flow is circulated by the circulation pump M2 ( 7 ) via the actuators ( 4 ) and gives off heat to the domestic water via the heat exchanger ( 2 ). As soon as predetermined limit values are reached, part of the heating water is brought into the heating buffer ( 5 ) by the circulation pump M1 ( 6 ) and can thus be used for the heating ( 8 ). The heat pump ( 1 ) runs until the hot water tank ( 3 ) and buffer tank ( 5 ) have reached the specified temperature. This means that sufficient hot water is always available during the heating season.

Außerhalb der Heizperiode erfolgt die Aufheizung des Brauchwasserbehälters und des Pufferspeichers genau so wie eben beschrieben, ohne daß aber Wärmeenergie an den Heizkreis (8) abgeführt wird. Durch Umschalten der Stellglieder (4) in der Weise, daß Weg B/AB offen und Weg A/AB geschlossen ist, kann nun die Energie aus dem Pufferspeicher (5) entnommen und über den Wärmeaustauscher (2) dem Brauchwasser zugeführt werden. Dies geschieht durch die Umwälzpumpe M2 (7), die das kältere Wasser in den Pufferspeicher (5) von unten einspeist und das wärmere Wasser oben herausdrückt.Outside the heating period, the hot water tank and the buffer tank are heated up exactly as just described, but without any heat energy being dissipated to the heating circuit ( 8 ). By switching the actuators ( 4 ) in such a way that path B / AB is open and path A / AB is closed, the energy can now be removed from the buffer store ( 5 ) and fed to the domestic water via the heat exchanger ( 2 ). This is done by the circulation pump M2 ( 7 ), which feeds the colder water into the buffer tank ( 5 ) from below and pushes out the warmer water at the top.

Claims (6)

1. Schaltungsanordnung zur Brauchwassererwärmung mittels Heizungs-Wärmepumpe, deren Heizleistung größer sein kann, als die jeweils zur Brauchwassererwärmung oder Gebaudeheizung abgeführte Leistung, dadurch gekennzeichnet, daß bei größerem Leistungsangebot der Wärmepumpe der die Abnahmekapazität des Brauchwasserwärmeaustauschers überschreitende Energieinhalt so gesteuert wird, daß diese Überschußenergie in einen Pufferspeicher, vorzugsweise in einen Heizungspufferspeicher, eingespeist wird.1. Circuit arrangement for domestic water heating by means of a heating heat pump, the heating output of which may be greater than the power dissipated for domestic water heating or building heating, characterized in that, in the case of a larger range of services of the heat pump, the energy content exceeding the capacity of the domestic water heat exchanger is controlled so that this excess energy is controlled in a buffer memory, preferably in a heating buffer memory, is fed. 2. Brauchwassererwärmung nach Schutzanspruch 1, dadurch gekennzeichnet, daß die Brauchwassererwärmung in einem Speicher mit integriertem Wärmeaustauscher nach dem Speicherladeprinzip stattfindet, dessen Leistungsübertragung geringer sein kann, als die von der Wärmepumpe erzeugte Heizleistung (Fig. 1).2. hot water heating according to protection claim 1, characterized in that the hot water heating takes place in a memory with an integrated heat exchanger according to the storage charging principle, the power transmission may be less than the heat output generated by the heat pump ( Fig. 1). 3. Brauchwassererwärmung nach Schutzanspruch 1, dadurch gekennzeichnet, daß die Brauchwassererwärmung in einem Speicher mit extern angeordnetem Wärmeaustauscher nach dem Speicherladeprinzip erfolgt, dessen Leistungsübertragung geringer sein kann, als die von der Wärmepumpe erzeugte Heizleistung (Fig. 2).3. hot water heating according to protection claim 1, characterized in that the hot water heating takes place in a memory with an externally arranged heat exchanger according to the accumulator charging principle, the power transmission can be less than the heating power generated by the heat pump ( Fig. 2). 4. Brauchwassererwärmung nach Schutzanspruch 1, dadurch gekennzeichnet, daß die Brauchwassererwärmung nach dem Durchlaufprinzip durch einen in einem Speicher integrierten Wärmeaustauscher erfolgt, dessen Leistungsübertragung geringer sein kann, als die von der Wärmepumpe erzeugte Heizleistung (Fig. 3).4. hot water heating according to protection claim 1, characterized in that the hot water heating is carried out according to the continuous principle by a heat exchanger integrated in a memory, the power transmission may be less than the heating power generated by the heat pump ( Fig. 3). 5. Brauchwassererwärmung nach Schutzanspruch 1, dadurch gekennzeichnet, daß die Stellglieder Mischer-, Magnet- oder Motorventile sowie Pumpen Schieber oder Klappen sein können, die einzeln in die Leitungen eingebaut werden können (Fig. 4).5. hot water heating according to protection claim 1, characterized in that the actuators mixer, solenoid or motor valves and pumps can be slides or flaps which can be installed individually in the lines ( Fig. 4). 6. Brauchwassererwärmung nach Schutzanspruch 1, dadurch gekennzeichnet, daß bei größerem Leistungsbedarf für die Brauchwassererwärmung und kleinerem Leistungsbedarf für die Heizung, die Überschußenergie in den Brauchwasserbehälter abgeführt wird (Fig. 5 und 6).6. hot water heating according to protection claim 1, characterized in that the excess energy is dissipated into the hot water tank for larger power requirements for hot water heating and smaller power requirements for heating ( Fig. 5 and 6).
DE19713462A 1997-03-20 1997-03-20 Circuit arrangement for heating utility water Withdrawn DE19713462A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19713462A DE19713462A1 (en) 1997-03-20 1997-03-20 Circuit arrangement for heating utility water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19713462A DE19713462A1 (en) 1997-03-20 1997-03-20 Circuit arrangement for heating utility water

Publications (1)

Publication Number Publication Date
DE19713462A1 true DE19713462A1 (en) 1998-09-24

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ID=7825142

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19713462A Withdrawn DE19713462A1 (en) 1997-03-20 1997-03-20 Circuit arrangement for heating utility water

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DE (1) DE19713462A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10205740A1 (en) * 2002-02-12 2003-08-21 Erich Ott Method for heating a room with a heat pump, has two circulation pumps one of which feeds the boiler at a lower rate than the room circulation pump
DE102008016191A1 (en) * 2008-03-27 2009-10-01 Schulze, Rolf, Dipl.-Ing. Device for heating and storage of drinking water, comprises a hot water feed line, a hot water discharge, a hot water storage, a pump for hot water storage, a mixing point for hot water, and a feed pipe for drinking cold water
DE102008021804A1 (en) * 2008-04-03 2009-10-08 WISAG Gebäude- und Industrieservice Nord-West GmbH heater
DE102010056370A1 (en) * 2010-05-02 2012-06-06 KLK Klima Lüftung Kälte GmbH Device for increasing efficiency of heat pump system for use during industrial water treatment, has condenser connected with valve such that industrial water is flowed, and heat carrier circuit that is closed between condenser and tanks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10205740A1 (en) * 2002-02-12 2003-08-21 Erich Ott Method for heating a room with a heat pump, has two circulation pumps one of which feeds the boiler at a lower rate than the room circulation pump
DE102008016191A1 (en) * 2008-03-27 2009-10-01 Schulze, Rolf, Dipl.-Ing. Device for heating and storage of drinking water, comprises a hot water feed line, a hot water discharge, a hot water storage, a pump for hot water storage, a mixing point for hot water, and a feed pipe for drinking cold water
DE102008021804A1 (en) * 2008-04-03 2009-10-08 WISAG Gebäude- und Industrieservice Nord-West GmbH heater
DE102010056370A1 (en) * 2010-05-02 2012-06-06 KLK Klima Lüftung Kälte GmbH Device for increasing efficiency of heat pump system for use during industrial water treatment, has condenser connected with valve such that industrial water is flowed, and heat carrier circuit that is closed between condenser and tanks

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