DE10052097A1 - Central drinking water warming system has a circulation pump drawing water from the top of the heating tank - Google Patents

Central drinking water warming system has a circulation pump drawing water from the top of the heating tank

Info

Publication number
DE10052097A1
DE10052097A1 DE2000152097 DE10052097A DE10052097A1 DE 10052097 A1 DE10052097 A1 DE 10052097A1 DE 2000152097 DE2000152097 DE 2000152097 DE 10052097 A DE10052097 A DE 10052097A DE 10052097 A1 DE10052097 A1 DE 10052097A1
Authority
DE
Germany
Prior art keywords
drinking water
circulation
circulation line
line
circulation pump
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Withdrawn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
DE2000152097
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2000152097 priority Critical patent/DE10052097A1/en
Publication of DE10052097A1 publication Critical patent/DE10052097A1/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Withdrawn legal-status Critical Current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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F24D17/0084—Coaxial tubings
    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems

Abstract

The pump (2) draws water from the heating tank (4) passing it through (1) and inside or outside the return pipe (3) to taps (5) for recirculation and maintenance of the required temperature.

Description

Stand der TechnikState of the art

Größere Trinkwassererwärmungssysteme werden heute und in der Vergangenheit mit einer Zirkulationsleitung ausgerüstet, die normalerweise parallel zur Warmwasserleitungen geführt wird. Seit 1983 sind auch Systeme bekannt und in der ehemaligen DDR patentiert. bei denen die Zirkulationsleitung innerhalb der Warmwasserleitung geführt wird.Larger drinking water heating systems are now and in the past equipped with a circulation pipe, which is normally run parallel to the hot water pipes. Systems have also been known since 1983 and patented in the former GDR. where the circulation pipe is routed within the hot water pipe.

Einheitlich für alle bekannten Systeme wird die, zur Erreichung der erforderlichen Betriebstemperatur benötigte Zirkulationswassermenge durch eine Zirkulationspumpe entgegen der Fließrichtung in der Warmwasserleitung zurück zum Trinkwassererwärmer gefördert.Uniformity for all known systems is achieved in order to achieve the required Operating temperature required circulation water quantity by a circulation pump the flow direction in the hot water pipe back to the drinking water heater.

Zur Vermeidung von Fehlströmungen bei Anschluß der Zirkulationsleitungen an den kalten Bereich des Trinkwassererwärmers, werden Zirkulationspumpen druckseitig üblicherweise mit Rückschlagventilen ausgerüstet. Diese Anordnung hat den Nachteil, daß der Zirkulationsbetrieb bei jeder größeren Zapfung im Verteilnetz gestoppt wird.To avoid false currents when connecting the circulation lines to the cold ones In the area of the drinking water heater, circulation pumps are usually included on the pressure side Check valves equipped. This arrangement has the disadvantage that the circulation operation is stopped at every major tap in the distribution network.

Problemstellungproblem

Die "Analytische Untersuchung von Warmwasserverteilungssystemen mit Strangweise innen­ liegenden Zirkulationsleitungen" von Professor Dpl. Ing. Klaus Rudat in Berlin, veröffentlicht in Heizung Lüftun/Klima Haustechnik HLH Band 51 Nr. 11 beschreibt für ein neues System der "Pipe in Pipe-Zirkulation" neben allen Vorteilen, auch den Nachteil dieses Systems darin, daß der Strömungsquerschnitt der Warmwasserleitung durch das innenliegende Zirkulationsrohr verringert wird. Professor Dpl's "Analytical investigation of hot water distribution systems with internal circulation pipes." Ing. Klaus Rudat in Berlin, published in heating ventilation / air conditioning HLH volume 51 No. 11 describes for a new system of "pipe in pipe circulation" besides all advantages, also the disadvantage of this system in that the flow cross-section of the hot water pipe through the internal circulation pipe is reduced.

Neuheitnovelty

Zur Behebung aller bekannten Nachteile von Trinkwasser-Zirkulationssystemen wird erfindungsgemäß vorgeschlagen, die Zirkulationsleitung (1) am oberen Teil von Trinkwassererwärmern (4) anzuschließen und die Strömungsrichtung in den Zirkulationsleitungen (1) umzukehren.In order to eliminate all known disadvantages of drinking water circulation systems, the invention proposes connecting the circulation line ( 1 ) to the upper part of drinking water heaters ( 4 ) and reversing the direction of flow in the circulation lines ( 1 ).

Die Zirkulationspumpe (2) wird zu diesem Zweck an gleicher Stelle wie bisher umgekehrt eingebautFor this purpose, the circulation pump ( 2 ) is installed in the same place as before in reverse

Das bisher übliche Rückschlagventil vor der Pumpe in der Zirkulationsleitung (1) entfällt.The previously common check valve upstream of the pump in the circulation line ( 1 ) is no longer required.

Der Querschnitt der Wasserleitung, einschließlich der innenliegenden oder außenliegenmden Zirkulationsleitung (1), wird bei Spitzenzapfungen jetzt ohne Einschränkung nutzbar.The cross-section of the water pipe, including the internal or external circulation pipe ( 1 ), can now be used without restriction for tip taps.

Neben der Energieeinsparung (Wärmeverluste) in Folge der hierbei mögliche Reduzierung des Rohrdurchmessers und der Energieeinsparung (Pumpenstrom), die durch kontinuierlichen Betrieb der Zirkulationspumpe (2) in Zapfrichtung, ohne den Widerstand des Rückschlagventils entsteht, werden natürlich auch erhebliche Kosteneinsparungen bei der Erstellung des Trinkwassererwärmungssystems möglich.In addition to the energy saving (heat loss) as a result of the possible reduction in the pipe diameter and the energy saving (pump current) that results from the continuous operation of the circulation pump ( 2 ) in the tap direction, without the resistance of the check valve, there are of course also considerable cost savings in the creation of the drinking water heating system possible.

Bei Verwendung geeigneter thermischer oder manueller Stellglieder (6) zur Einregulierung der Volumenströme in einzelnen Zirkulationssträngen, wird die Einhaltung der Anforderungen des DVGW-Arbeitsblattes W551 möglich, nach dem an keiner Stelle des Verteilsystems weniger als 55°C Trinkwassertemperatur auftreten sollen.If suitable thermal or manual actuators ( 6 ) are used to regulate the volume flows in individual circulation lines, it is possible to comply with the requirements of DVGW worksheet W551, according to which no drinking water temperature of 55 ° C should occur at any point in the distribution system.

Schließlich kommt es auch zu einer Verbesserung der hygienischen Bedingungen im Verteilnetz als Folge der verkleinerten Rohrdurchmesser (Biofilm auf Oberflächen.)Finally, there is also an improvement in the hygienic conditions in the distribution network as a result of the reduced pipe diameter (biofilm on surfaces.)

Claims (6)

1. Verfahren zur verbesserten Wirtschaftlichkeit von Trinkwassererwärmungssystemen mit Zirkulationsleitung dadurch gekennzeichnet, daß sowohl die Warmwasserleitung (3) als auch die außenliegende oder innenliegende Zirkulationsleitung (1) bei Spitzenzapfungen parallel zur Versorgung genutzt werden und dafür auch dimmensioniert werden.1. A method for improved economy of drinking water heating systems with a circulation line, characterized in that both the hot water line ( 3 ) and the external or internal circulation line ( 1 ) are used in parallel with supply at peak taps and are also dimensioned for this. 2. Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß die Zirkulationsleitung (1) und die Warmwasserleitung (3) oben am Trinkwassererwärmer (4) angeschlossen wird.2. The method according to claim 1, characterized in that the circulation line ( 1 ) and the hot water line ( 3 ) at the top of the drinking water heater ( 4 ) is connected. 3. Verfahren nach Anspruch 1 und 2 dadurch gekennzeichnet, daß das übliche Rückschlagventil in der Zirkulationsleitung (1) entfällt.3. The method according to claim 1 and 2, characterized in that the usual check valve in the circulation line ( 1 ) is omitted. 4. Verfahren nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß die Zirkulationspumpe (2) in der Zirkulationsleitung (1) vom Trinkwassererwärmer (4) weg hin zu den Zapfstellen (5) fördert.4. The method according to claim 1 to 3 characterized in that the circulation pump ( 2 ) in the circulation line ( 1 ) from the drinking water heater ( 4 ) away to the tap ( 5 ). 5. Verfahren nach Anspruch 1 bis 4 dadurch gekennzeichnet, daß zur Einstellung der erforderlichen Mindesttemperatur bei innenliegender Zirkulation, zur Verhinderung von Legionellenwachstum im Verteilnetz an geeigneter Stelle (6) ein thermisches oder manuell verstellbares Stellglied innerhalb der Rohrleitung (3) vorgesehen ist.5. The method according to claim 1 to 4, characterized in that a thermal or manually adjustable actuator within the pipeline ( 3 ) is provided to set the required minimum temperature with internal circulation, to prevent Legionella growth in the distribution network at a suitable point ( 6 ). 6. Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß nach dem Trinkwassererwärmer (4) in die Zirkulationsleitung (1) ein Mischventil zur Steuerung der gewünschten Austrittstemperatur in das Verteilnetz vorgesehen ist das die oft überhöhte Speichertemperatur im obren Behälterinhalt von zum Beispiel 67°C auf zum Beispiel 60°C herabsetzt.6. The method according to claim 1, characterized in that after the drinking water heater ( 4 ) in the circulation line ( 1 ) a mixing valve for controlling the desired outlet temperature in the distribution network is provided that the often excessive storage temperature in the upper container content of, for example, 67 ° C to Example reduced 60 ° C.
DE2000152097 2000-10-20 2000-10-20 Central drinking water warming system has a circulation pump drawing water from the top of the heating tank Withdrawn DE10052097A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2000152097 DE10052097A1 (en) 2000-10-20 2000-10-20 Central drinking water warming system has a circulation pump drawing water from the top of the heating tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000152097 DE10052097A1 (en) 2000-10-20 2000-10-20 Central drinking water warming system has a circulation pump drawing water from the top of the heating tank

Publications (1)

Publication Number Publication Date
DE10052097A1 true DE10052097A1 (en) 2002-05-02

Family

ID=7660486

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000152097 Withdrawn DE10052097A1 (en) 2000-10-20 2000-10-20 Central drinking water warming system has a circulation pump drawing water from the top of the heating tank

Country Status (1)

Country Link
DE (1) DE10052097A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004070279A2 (en) * 2003-02-10 2004-08-19 Douglas Roger Stirn A re-circulating hot water system adapted for supply and space heating applications
WO2006109080A2 (en) * 2005-04-14 2006-10-19 Lee Mckeith Central heating system
GB2457918A (en) * 2008-02-29 2009-09-02 R J Res & Dev Ltd Plumbing circuit with recirculation loop

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004070279A2 (en) * 2003-02-10 2004-08-19 Douglas Roger Stirn A re-circulating hot water system adapted for supply and space heating applications
WO2004070279A3 (en) * 2003-02-10 2004-11-04 Douglas Roger Stirn A re-circulating hot water system adapted for supply and space heating applications
WO2006109080A2 (en) * 2005-04-14 2006-10-19 Lee Mckeith Central heating system
WO2006109080A3 (en) * 2005-04-14 2007-05-03 Lee Mckeith Central heating system
GB2457918A (en) * 2008-02-29 2009-09-02 R J Res & Dev Ltd Plumbing circuit with recirculation loop

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