EP1710512A2 - Procédé pour faire fonctionner une installation de chaufage comportant un mélangeur - Google Patents
Procédé pour faire fonctionner une installation de chaufage comportant un mélangeur Download PDFInfo
- Publication number
- EP1710512A2 EP1710512A2 EP06101245A EP06101245A EP1710512A2 EP 1710512 A2 EP1710512 A2 EP 1710512A2 EP 06101245 A EP06101245 A EP 06101245A EP 06101245 A EP06101245 A EP 06101245A EP 1710512 A2 EP1710512 A2 EP 1710512A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixer
- pump
- heat
- flow
- transfer medium
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 title claims description 29
- 238000009434 installation Methods 0.000 title 1
- 238000012546 transfer Methods 0.000 claims description 35
- 238000010992 reflux Methods 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 241000271903 Achimenes grandiflora Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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
- F24D19/1015—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
- F24D19/1033—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve motor operated
-
- 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
- F24D19/1021—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a by pass valve
Definitions
- the invention relates to a method for operating a heating system in which a heat transfer medium is pumped with at least one pump from a heat source via a flow to at least one heat consumer and a return back to the heat source and at least one mixer with the flow temperature by admixture of heat transfer medium is regulated from the return. Furthermore, the invention relates to an arrangement for carrying out the method.
- Heating systems with central heat generators and heat distribution by means of heat transfer medium to heat consumers are well known. As a rule, buildings are heated with such heating systems.
- the heat generators are ovens, heat pumps, solar systems or other facilities in which heat is provided.
- a heated by the heat source heat transfer medium can either circulate directly in the heating circuit or collected in a memory. It is also a renewed heat transfer via a heat exchanger or a four-way mixing valve possible, so that there is a separate heating circuit and a separate heat generator circuit.
- the heat transfer medium is usually water, optionally mixed with additives to prevent deposits and corrosion in the pipe network.
- the heated heat transfer medium is transported via a flow to the heat consumers.
- heat consumers such as radiators, heat exchangers for hot water or heating hoses in foot or wall heaters
- heat is dissipated to the rooms to be heated or the surfaces to be heated.
- the cooled Heat transfer medium flows back via a return to the heat source.
- Supply and return consisting of a line system with facilities for state detection and - change the heat transfer medium (pumps, control and measurement units, etc.).
- a natural circulation can be used as a result of the differences in weight between heated and cooled heat transfer medium.
- the natural circulation is only conditionally controllable, which is why a pump is used according to the prior art for the circulation of the heat transfer medium.
- the temperature of the heat transfer medium in the flow through the position of a mixer e.g. a three-way mixing valve or a four-way mixing valve, determined.
- a mixer e.g. a three-way mixing valve or a four-way mixing valve
- the pump and the mixer are designed for the maximum heat output of a heating system.
- the pump is usually differential pressure controlled and the mixer flow temperature controlled. With decreasing heat output with less open heat consumers thereby reduce the flow rates of the heat transfer medium through the pump and mixer. For larger heating systems, eg in centrally heated residential buildings, this means that the pump and mixer must be usable over a large operating range. For example, only heat exchanger for hot water treatment as a heat consumer can be present in summer operation, pump and mixer then work only with a fraction of the maximum flow rate of the heat transfer medium.
- a control for heating systems by means of a pump with variable delivery rate for the circulation of a carrier liquid is also in the DE 26 13 297 described.
- a smaller auxiliary mixer and a smaller auxiliary pump are arranged parallel to a main mixer and a main pump for heating systems which have a high maximum heating capacity with a large operating range.
- Additional mixer and additional pump are designed for the low flow rates of the heat transfer medium, in which the main pump and main mixer no longer satisfactory mixing process. But even with this solution, it can come in operating areas with further reduction of the flow rates to a swing of the flow temperature.
- the invention is therefore based on the object to provide a comparison with the prior art improved heating system with mixer.
- this object is achieved by a method according to claim 1 and an arrangement for carrying out the method according to claim 5.
- the advantage lies in avoiding the oscillation of the flow temperature in all operating conditions and is due to the arrangement of a reflux bypass, at least a mixer and the at least one pump bridges and over which each supply line of the at least one mixer, a portion of the heat transfer medium is supplied.
- the flow rates of the heat transfer medium through the open heat consumers and the return flow bypass.
- An advantageous embodiment of the invention provides that for the at least one mixer a design-dependent minimum flow rate is set, wherein when approaching this with a valve in the return flow bypass the flow is increased so far that the minimum flow rate in the at least one mixer does not fall below becomes.
- the heating system can then be operated up to the flow rate through the heat consumer, in which no oscillation of the flow occurs, with closed valve in the return flow bypass. Only when the flow rate approaches the lower limit of the optimized mixer operating range, the valve is opened so that there is always a set minimum flow rate. This optimizes the power consumption of the pump for the entire operating range.
- the valve is advantageously arranged in the region of the reflux bypass, which is not formed as branches to the mixer ports, so that the entire reflux amount of the heat transfer medium flows through the valve.
- the non-return valve may be, for example, check valves or check valves, which allow only one direction of flow and thereby have a low flow resistance in the flow direction.
- the flow rate over the speed of the at least one pump In order to detect the approach to the minimum flow rate in the at least one mixer, it is recommended that the flow rate over the speed of the at least one pump to measure, if it is a centrifugal pump with flow proportional speed.
- the heat transfer medium is then performed when approaching a minimum speed of the main pump only by means of additional pump on the smaller additional mixer or open the valve in the return flow bypass.
- additional elements for flow rate measurement can be omitted.
- the heated heat transfer medium is moved to heat consumers 8 starting from a heat source 1 via a feed 2 through a mixer 4 and a pump 5.
- the heat source 1 may be a heat generator (e.g., furnace, heat pump, solar element, thermal source, etc.), a reservoir, or a heat transfer device (heat exchanger, four-way mixing valve).
- the mixer 4 which is shown here as a three-way mixing valve with servomotor M, the heated heat transfer medium, a portion of the cooled heat transfer medium from the return 3 is added.
- a pump 5 is usually a centrifugal circulation pump used, the flow rate is proportional to the speed.
- the mixing ratio between the heated and cooled heat transfer medium is determined, resulting in the flow temperature T results, with the heat transfer medium reaches the heat consumers 8 and with a thermometer. 6 is detected.
- the mixer 4 is regulated so that the flow temperature T follows the setpoint temperature specification.
- the difference between the pressure in the flow 2 and in the return 4 is detected by a pressure gauge 7.
- the pump 5 operates with a differential pressure control with constant differential pressure specification. This results in the dependence of the flow rate through the pump 5 on the number of flowed through heat consumer 8, which are usually divided into parallel zones. The fewer zone valves are opened, the lower the flow rate through the pump must be set so that the pressure drop in the heat consumers 8 remains constant. From a design-related minimum flow rate of the mixer 4, it may then come to unwanted oscillation of the flow temperature T.
- the reflux bypass 10 branches off after the thermometer 6 and leads to a valve 11, with which the flow rate through the reflux bypass 10 is controlled. Behind the valve 11 is a branching and continuation to the two connection points with the inflow lines of the mixer 4.
- the valve 11 is for example a solenoid valve or a tap, which is controlled by a servomotor M.
- non-return valve 12 In all lines that open into the inlet lines of the mixer 4, non-return valve 12 are arranged to prevent erroneous circulation.
- FIG 3 the scheme of a heating system according to the invention with two mixers 4 and 14 and two pumps 5 and 13 is shown for large residential buildings.
- the line branch with the main pump 5 and the main mixer 4 a line branch with a smaller auxiliary pump 5 and an additional mixer 4 is connected in parallel.
- a backflow bypass 10 with a valve 11 is again arranged.
- the flow temperature T is detected, which serves as an actual variable for the temperature control of the mixer 4 and 14.
- the pressure drop in the heat consumers 8 corresponding differential pressure Ap between the pressure in the flow 2 and the pressure in the return 3 is detected again via a pressure gauge 7.
- the differential pressure ⁇ p is the actual variable for the differential pressure control of the pumps 5 and 13.
- both pumps 5 and 13 are in operation.
- the speed in the main pump 5 is lowered. This happens until the minimum flow rate for the main mixer 4 is reached.
- the heat transfer medium is only passed through the smaller additional mixer 14 by the main pump 5 is no longer and the auxiliary pump 13 is operated.
- the speed of the auxiliary pump 13 is further reduced until the minimum flow rate of the auxiliary mixer 14 is reached.
- the valve 11 is opened in the return flow bypass and generates an additional circulation through the auxiliary mixer 14 and the auxiliary pump 13.
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)
- Central Heating Systems (AREA)
- General Preparation And Processing Of Foods (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0049505A AT501299B8 (de) | 2005-03-23 | 2005-03-23 | Verfahren zum betreiben einer heizanlage mit mischer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1710512A2 true EP1710512A2 (fr) | 2006-10-11 |
EP1710512A3 EP1710512A3 (fr) | 2008-07-23 |
EP1710512B1 EP1710512B1 (fr) | 2010-03-31 |
Family
ID=36587240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06101245A Not-in-force EP1710512B1 (fr) | 2005-03-23 | 2006-02-03 | Procédé pour faire fonctionner une installation de chaufage comportant un mélangeur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1710512B1 (fr) |
AT (2) | AT501299B8 (fr) |
DE (1) | DE502006006545D1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006054893A1 (de) * | 2006-11-20 | 2008-05-21 | Wilo Ag | Kompaktheizungsanlage |
US20190024995A1 (en) * | 2017-07-18 | 2019-01-24 | Eisenmann Se | Supply circuit for a heat exchange medium for a consumer, industrial plant and method for operating them |
EP2629020B1 (fr) * | 2012-02-16 | 2021-05-26 | Daikin Europe N.V. | Système de chauffage et son procédé de fonctionnement |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013001532B4 (de) | 2013-01-29 | 2018-08-16 | Ritter Energie- Und Umwelttechnik Gmbh & Co. Kg | Solarrücklaufbeimischung zur Solartemperaturbegrenzung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0001615A1 (fr) | 1977-10-26 | 1979-05-02 | Braukmann Armaturen AG | Dispositif de régulation pour installation de chauffage central |
DE10122475A1 (de) | 2001-05-09 | 2002-11-14 | Froeling Gmbh & Co Kessel Appb | Verfahren zur besseren Zirkulation in Trinkwassererwärmungsanlagen |
DE20217305U1 (de) | 2002-11-09 | 2003-03-27 | Dms Wasser Waermetechnik Gmbh | Desinfektion des gesamten Zirkulations-Volumenstromes |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2358754A1 (de) * | 1973-11-26 | 1975-05-28 | Schumacher Josef | Verfahren und vorrichtung zur steuerung einer heizungsanlage |
IT1036636B (it) * | 1975-07-25 | 1979-10-30 | Ve Ma Elettropompe Spa | Perfezionamento nei mezzi per la regolazione della temperatura di ambienti particolarmente per impianti di riscaldamento a circo lazione forzata di fluido |
DE3727442A1 (de) * | 1987-08-17 | 1989-03-02 | Gerhard Urban | Verfahren zur erzeugung von warmwasser und vorrichtung zur durchfuehrung dieses verfahrens |
-
2005
- 2005-03-23 AT AT0049505A patent/AT501299B8/de not_active IP Right Cessation
-
2006
- 2006-02-03 AT AT06101245T patent/ATE462936T1/de active
- 2006-02-03 DE DE502006006545T patent/DE502006006545D1/de active Active
- 2006-02-03 EP EP06101245A patent/EP1710512B1/fr not_active Not-in-force
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0001615A1 (fr) | 1977-10-26 | 1979-05-02 | Braukmann Armaturen AG | Dispositif de régulation pour installation de chauffage central |
DE10122475A1 (de) | 2001-05-09 | 2002-11-14 | Froeling Gmbh & Co Kessel Appb | Verfahren zur besseren Zirkulation in Trinkwassererwärmungsanlagen |
DE20217305U1 (de) | 2002-11-09 | 2003-03-27 | Dms Wasser Waermetechnik Gmbh | Desinfektion des gesamten Zirkulations-Volumenstromes |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006054893A1 (de) * | 2006-11-20 | 2008-05-21 | Wilo Ag | Kompaktheizungsanlage |
EP2629020B1 (fr) * | 2012-02-16 | 2021-05-26 | Daikin Europe N.V. | Système de chauffage et son procédé de fonctionnement |
US20190024995A1 (en) * | 2017-07-18 | 2019-01-24 | Eisenmann Se | Supply circuit for a heat exchange medium for a consumer, industrial plant and method for operating them |
Also Published As
Publication number | Publication date |
---|---|
ATE462936T1 (de) | 2010-04-15 |
AT501299B8 (de) | 2007-02-15 |
AT501299A4 (de) | 2006-08-15 |
DE502006006545D1 (de) | 2010-05-12 |
EP1710512A3 (fr) | 2008-07-23 |
AT501299B1 (de) | 2006-08-15 |
EP1710512B1 (fr) | 2010-03-31 |
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