DE4118799A1 - Flow control for hot water heating system - reduces pump speed when faster temperature rise indicates flow valve is reduced or closed - Google Patents
Flow control for hot water heating system - reduces pump speed when faster temperature rise indicates flow valve is reduced or closedInfo
- Publication number
- DE4118799A1 DE4118799A1 DE4118799A DE4118799A DE4118799A1 DE 4118799 A1 DE4118799 A1 DE 4118799A1 DE 4118799 A DE4118799 A DE 4118799A DE 4118799 A DE4118799 A DE 4118799A DE 4118799 A1 DE4118799 A1 DE 4118799A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- heating
- gradient
- reduced
- pump speed
- 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- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims description 6
- 239000008236 heating water Substances 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- 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
Description
Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentan spruches 1.The invention relates to a method according to the preamble of the patent saying 1.
Bei gedrosselten Heizkörperventilen besteht wegen der dann zu hohen Druck differenz zwischen der Ein- und Abströmseite die Gefahr von unangenehmen Strömungsgeräuschen. Um dieses Problem zu beseitigen, ist es üblich, in einer Verbindungsleitung vom Heizungsvor- zum Heizungsrücklauf ein druckabhängiges Überströmventil anzuordnen. Bei erhöhtem Druck im Heizungsvorlauf öffnet dieses Ventil. Die Druckdifferenz am Heizkörperventil wird verringert, und damit werden die Strömungsgeräusche verhindert.With throttled radiator valves there is then too high pressure difference between the inflow and outflow side the risk of unpleasant Flow noise. To eliminate this problem, it is common in one Connection line from the heating flow to the heating return a pressure-dependent Arrange overflow valve. Opens at increased pressure in the heating flow this valve. The pressure difference at the radiator valve is reduced, and this prevents the flow noise.
Durch das Überströmventil gelangt bei gedrosselten Heizkörperventilen heißes Vorlaufwasser in den kühleren Rücklauf. Ein solches Überströmen kann noch dadurch verstärkt werden, daß die Ventile zu niedrig eingestellt sind oder daß Heizkreispumpen mit zu größerer Förderhöhe eingesetzt werden. Es wird dann sehr häufig Vorlaufwasser dem Rücklauf beigemischt. Die Folge ist ein rasches Ansteigen der Kesselwasservorlauftemperatur mit entsprechend kurzen Brenner laufzeiten. Kurze Brennerlaufzeiten führen dann wieder zu häufigen Brenner starts mit hohen Umweltbelastungen und Energieverlusten.When the radiator valves are throttled, hot water gets through the overflow valve Flow water in the cooler return. Such an overflow can still are reinforced by the fact that the valves are set too low or that Heating circuit pumps with a higher delivery head are used. Then it will very often flow water mixed with the return. The result is a quick one Rise of the boiler water supply temperature with a correspondingly short burner terms. Short burner runtimes then lead to frequent burners starts with high environmental pollution and energy losses.
Der Erfindung lag die Aufgabe zugrunde, Strömungsgeräusche bei gedrosselten Heizkörperventilen unter Vermeidung der Probleme des Überströmens zu verhindern. Es sollen möglichst lange Brennerlaufzeiten zur Verringerung der Umweltbelastung und der Energieverluste erreicht werden. The invention had the object of throttling flow noises Radiator valves avoiding the problems of overflow prevent. The burner runtimes should be as long as possible to reduce the Environmental pollution and energy losses can be achieved.
Die Lösung erfolgt gemaß der Erfindung durch die im Kennzeichen des Patent anspruches genannte Maßnahme.The solution is according to the invention by the in the characterizing part of the patent claim called measure.
Es wird auf ein Überströmventil verzichtet und statt dessen mit einer an sich bekannten Pumpensteuerung zur Veränderung der Fördermenge gearbeitet. Und zwar soll die Fördermenge der Stellung des Heizkörperventiles angepaßt werden, um Strömungsgeräusche zu vermeiden. Dabei löst aber nicht das Heizkörperventil selbst den Steuervorgang aus. Das erfolgt vielmehr durch den Kesselwassertem peraturgradienten. Dieser Gradient liegt bei voll geöffneten Ventilen flacher, da relativ viel Rücklaufwasser in den Kessel einströmt. Der Anstieg der Vorlauf temperatur erfolgt langsamer. Der Brenner läuft bei hoher Fördermenge lange. Bei gedrosselten Ventilen liegt der Gradient steiler, da weniger Rücklaufwasser in den Kessel einströmt. Jetzt wird die Fördermenge reduziert. Dadurch erfolgt eine Reduzierung des Förderdruckes und eine Verringerung der Strömungsgeräu sche an den gedrosselten Ventilen.There is no overflow valve and instead one with it known pump control to change the flow rate worked. And the delivery rate should be adjusted to the position of the radiator valve, to avoid flow noises. However, the radiator valve does not work the control process itself. Rather, this is done by the boiler water temperature temperature gradient. This gradient is flatter because the valves are fully open relatively much return water flows into the boiler. The increase in the lead temperature is slower. The burner runs for a long time with a high flow rate. With throttled valves, the gradient is steeper because there is less return water flows into the boiler. The delivery rate is now reduced. This is done a reduction in the delivery pressure and a reduction in the flow noise on the throttled valves.
Vorteilhaft ist eine Pumpensteuerung durch ein Takten mit veränderlichem Puls- Pausen-Verhältnis. Auf diese Weise kann eine genaue Anpassung an die vorlie genden Verhältnisse erzielt werden. Dabei sollte das Puls-Pausen-Verhältnis so eingestellt sein, daß der Nachlauf des Pumpenmotores am Ende einer jeden Pause noch vorhanden ist. Ein solcher intermittierender Betrieb führt zu einer diffe renzierten, jedoch stetigen Fördermenge. Eine Mindestfördermenge sollte auch bei steilst möglichem Gradienten garantiert sein.Pump control by means of clocking with variable pulse is advantageous. Break ratio. In this way, an exact adaptation to the existing conditions can be achieved. The pulse-pause ratio should be like this be set so that the overrun of the pump motor at the end of each break is still there. Such an intermittent operation leads to a diffe limited, but steady flow rate. A minimum flow rate should also be be guaranteed with the steepest possible gradient.
Ein zu frühes Reduzieren der Fördermenge beim Starten der Kesselheizung aus kaltem Zustand kann dadurch vermieden werden, daß man mit der Ermittlung des Temperaturgradienten erst etwas unter der Kesselwassersolltemperatur, z. B. 10 K unterhalb dieses Wertes, beginnt.Reducing the flow rate too early when starting the boiler heating cold condition can be avoided by using the determination the temperature gradient only slightly below the boiler water temperature, e.g. B. 10 K below this value.
Die beigefügte Zeichnung stellt ein Ausführungsbeispiel der erfindungsgemäßen Steuerung dar. Es zeigt:The accompanying drawing represents an embodiment of the invention Control. It shows:
Fig. 1 Das Schema einer Heizungsanlage, Fig. 1 The scheme of a heating system,
Fig. 2 Ein Temperatur-Zeit-Diagramm und Fig. 2 is a temperature-time diagram and
Fig. 3 Die Fig. 2 zugeordnete Pumpenschaltung. Fig. 3 The Fig. 2 assigned pump circuit.
Die Heizungsanlage besteht aus dem Heizkessel 1, der zugeordneten Regelein heit 2, der Heizkreispumpe 3 sowie dem bzw. den erforderlichen Heizkörpern 4 mit Heizkörperventilen 5.The heating system consists of the boiler 1 , the associated Regelein unit 2 , the heating circuit pump 3 and the required radiator (s) 4 with radiator valves 5 .
Bei der Aufheizung aus kaltem Zustand empfiehlt es sich, bis zum Überschreiten des Taupunktes a die Heizkreispumpe ausgeschaltet zu lassen. Der kritische Temperaturbereich mit einer möglichen Kondensatbildung wird schnell über schritten. Ab dem Wert b, der beispielsweise 10 K unter der Kesselwassersoll temperatur s liegt, wird vom Regler der Temepraturgradient, d. h. der weitere Anstieg der Temperatur je Zeiteinheit, erfaßt. Liegt dieser flach gemäß den Kurven A, dann bedeutet dieses, daß die Ventile voll geöffnet sind und viel Wärme entnommen wird. Die Heizkreispumpe läuft mit voller Leistung. Liegt der Temperaturgradient jedoch steiler gemäß den Kurven B, dann wird nur wenig Wärme entnommen, weil die Ventile gedrosselt sind. Die Heizkreispumpe läuft mit verminderter Leistung, wodurch die Strömungsgeräusche an den Ventilen vermindert bzw. angeschlossen werden.When heating from a cold state, it is advisable to exceed it dew point a to leave the heating circuit pump switched off. The critical one Temperature range with a possible formation of condensate is quickly over steps. From the value b, which is 10 K below the boiler water, for example temperature s, the temperature gradient is controlled by the controller. H. the other Rise in temperature per unit of time. If this lies flat according to the Curves A, then this means that the valves are fully open and a lot Heat is removed. The heating circuit pump runs at full capacity. Lies however, the temperature gradient is steeper according to curves B, then only little heat removed because the valves are throttled. The heating circuit pump runs with reduced power, which causes the flow noise to the Valves are reduced or connected.
Je nach Steilheit der Gradienten können beliebig viele Leistungsabstufungen vorgenommen werden, wobei jedoch eine Mindestfördermenge der Heizkreispumpe einzuhalten ist. Man könnte mit einer drehzahlgeregelten Heizkreispumpe arbei ten. Sehr einfach ist jedoch eine Regelung über das dargestellte Ein-Aus-Schal ten. Die Einstellung der Fördermenge erfolgt dann über die Veränderung des Puls-Pausen-Verhältnisses.Depending on the gradient of the gradient, any number of performance levels can be used be made, however, a minimum flow of the heating circuit pump is to be observed. You could work with a speed-controlled heating circuit pump However, regulation via the illustrated on / off switch is very simple The delivery rate is then adjusted by changing the Pulse-pause ratio.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4118799A DE4118799A1 (en) | 1991-06-07 | 1991-06-07 | Flow control for hot water heating system - reduces pump speed when faster temperature rise indicates flow valve is reduced or closed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4118799A DE4118799A1 (en) | 1991-06-07 | 1991-06-07 | Flow control for hot water heating system - reduces pump speed when faster temperature rise indicates flow valve is reduced or closed |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4118799A1 true DE4118799A1 (en) | 1992-12-10 |
Family
ID=6433447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4118799A Withdrawn DE4118799A1 (en) | 1991-06-07 | 1991-06-07 | Flow control for hot water heating system - reduces pump speed when faster temperature rise indicates flow valve is reduced or closed |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4118799A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211204A1 (en) * | 1992-04-03 | 1993-10-14 | Buderus Heiztechnik Gmbh | Process for optimizing the burner running times and the number of burner starts per unit of time in a heating system |
DE4433541A1 (en) * | 1994-08-29 | 1996-03-07 | Landis & Gyr Business Support | Central heating circuit control system |
EP0736826A2 (en) * | 1995-04-08 | 1996-10-09 | WILO GmbH | Temperature responsive power control for an electric pump unit |
EP0753707A1 (en) * | 1995-07-10 | 1997-01-15 | Dejatech B.V. | Heating apparatus having a water circulation controlled on the basis of the heat requirement measured in a heating circuit |
DE19912588A1 (en) * | 1999-03-20 | 2000-09-21 | Ksb Ag | Fluid transport system |
WO2000057256A1 (en) * | 1999-03-20 | 2000-09-28 | Ksb Aktiengesellschaft | Energy-saving method for adjusting a heating system |
DE10217272A1 (en) * | 2002-04-18 | 2003-11-06 | Ecm Energy Contracting Man Lip | A method for controlling the heating performance of a room heating system has measurements of the input and output temperatures of the boiler and a volume flow controller. |
-
1991
- 1991-06-07 DE DE4118799A patent/DE4118799A1/en not_active Withdrawn
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211204A1 (en) * | 1992-04-03 | 1993-10-14 | Buderus Heiztechnik Gmbh | Process for optimizing the burner running times and the number of burner starts per unit of time in a heating system |
DE4433541A1 (en) * | 1994-08-29 | 1996-03-07 | Landis & Gyr Business Support | Central heating circuit control system |
EP0736826A2 (en) * | 1995-04-08 | 1996-10-09 | WILO GmbH | Temperature responsive power control for an electric pump unit |
DE19513394A1 (en) * | 1995-04-08 | 1996-10-10 | Wilo Gmbh | Temperature-controlled power control for electrically operated pump units |
EP0736826B1 (en) * | 1995-04-08 | 1999-11-24 | WILO GmbH | Temperature responsive power control for an electric pump unit |
DE19513394B4 (en) * | 1995-04-08 | 2006-06-14 | Wilo Ag | Temperature-controlled power control for electrically operated pump units |
EP0753707A1 (en) * | 1995-07-10 | 1997-01-15 | Dejatech B.V. | Heating apparatus having a water circulation controlled on the basis of the heat requirement measured in a heating circuit |
DE19912588A1 (en) * | 1999-03-20 | 2000-09-21 | Ksb Ag | Fluid transport system |
WO2000057256A1 (en) * | 1999-03-20 | 2000-09-28 | Ksb Aktiengesellschaft | Energy-saving method for adjusting a heating system |
DE10217272A1 (en) * | 2002-04-18 | 2003-11-06 | Ecm Energy Contracting Man Lip | A method for controlling the heating performance of a room heating system has measurements of the input and output temperatures of the boiler and a volume flow controller. |
DE10217272B4 (en) * | 2002-04-18 | 2006-02-23 | Helmut Dipl.-Ing. Lippok | Method for controlling thermal output |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |