EP2280230B1 - Procédé de surveillance de l'état de salissure d'un échangeur thermique sur un appareil de chauffage - Google Patents
Procédé de surveillance de l'état de salissure d'un échangeur thermique sur un appareil de chauffage Download PDFInfo
- Publication number
- EP2280230B1 EP2280230B1 EP10006935.0A EP10006935A EP2280230B1 EP 2280230 B1 EP2280230 B1 EP 2280230B1 EP 10006935 A EP10006935 A EP 10006935A EP 2280230 B1 EP2280230 B1 EP 2280230B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hot water
- monitoring
- heat exchanger
- contamination
- state
- 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.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 20
- 238000011109 contamination Methods 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 9
- 235000006506 Brasenia schreberi Nutrition 0.000 description 4
- 241001156002 Anthonomus pomorum Species 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002308 calcification Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- 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
- F24D19/0092—Devices for preventing or removing corrosion, slime or scale
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/144—Measuring or calculating energy consumption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/36—Control of heat-generating means in heaters of burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
Definitions
- the invention relates to a method for monitoring the soiling state of a heat exchanger according to the preamble of claim 1.
- a method for monitoring the soiling state of a heat exchanger is out DD 292963 A5 known.
- a soiling state is detected when the hot water temperature at a heat exchanger is less than a predetermined hot water target temperature.
- a method for monitoring the state of soiling of a heat exchanger for hot water to a heater is after the DE 43 09 313 A1 known.
- a series of temperature sensors provided on the heating system and a pump speed sensor are used to detect a fouling condition (for example, calcification) of the heat exchanger.
- a fouling condition for example, calcification
- the invention has for its object to improve a method of the type mentioned, in particular to the effect that no original operating data must be detected.
- the monitoring takes place during and after a predetermined minimum duration of hot water preparation and that a contamination state is detected when the power of the heater fluctuates beyond a predetermined amount and at the same time the hot water actual temperature at the heat exchanger smaller than a predetermined hot water Target temperature is.
- FIG. 1 an embodiment of a heater 2 is shown, in which the inventive method for monitoring the contamination state of a heat exchanger 1 for hot water preparation is feasible.
- the heater 2 shown is a wall-mounted heater in which the heat exchanger to be monitored 1 is designed as a plate heat exchanger.
- the heater 2 has a provided with a gas connection 9 burner 3, which is associated with a further heat exchanger 6 in a known manner.
- This heat exchanger 6 is connected with the interposition of the plate heat exchanger on the one hand with the return line 7 and on the other hand with the flow 8 of a heating circuit not shown.
- the plate heat exchanger has a cold water inlet connection 5 and a hot water outlet connection 4.
- Essential for the method according to the invention is now that the monitoring takes place during and after a predetermined minimum period of hot water and that a pollution condition detected and in a suitable manner the operator of the heating system is signaled when the power of the heater 2 fluctuates beyond a predetermined amount and at the same time the hot water actual temperature at the heat exchanger 1 is less than a predetermined hot water set temperature.
- FIGS. 2 and 3 which show an operation with non-polluted heat exchanger 1
- a predetermined hot water target temperature of about 43 ° C is reliably achieved
- the power of the heater 2 and the burner 3 is quite uniform average about 18 kW.
- the hot water actual temperature does not run firstly evenly and secondly, it does not reach the average set hot water temperature of about 43 ° C, which is around 37 ° C here.
- the heater 2 and the burner 3 is running in the so-called cyclic operation, ie, the scheme tries to reach the predetermined hot water set temperature, the burner 3 but must be turned off again and again by a corresponding control, as its maximum power is achieved.
- the monitoring of the soiling state can optionally be carried out in operation (ie permanently), from time to time, at regular intervals or at intervals of less than 2 days (if there is any hot water preparation at all during this time) becomes.
- a contamination state is detected when the power fluctuates during monitoring more than 30% of the maximum power of the heater 2 (depending on the device design or the modulation range).
- a contamination state is detected if, during monitoring, the power of the heater 2 increases so much that a monitoring sensor such as a temperature monitor switches off the burner 3 of the heater 2.
- a contamination state is detected when the average hot water actual temperature during monitoring exceeds 3 ° C, the predetermined hot water target temperature at the heat exchanger 1 (depending on the device type), the actual hot water temperature at a hot water outlet connection 4 of the heat exchanger 1 is monitored.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Claims (7)
- Procédé pour surveiller l'état d'encrassement d'un échangeur de chaleur (1) pour la préparation d'eau chaude sur un dispositif de chauffage (2), dans lequel la surveillance a lieu pendant et à partir d'une durée minimale prédéterminée de la préparation d'eau chaude, et,
caractérisé en ce que
un état d'encrassement est reconnu lorsque la puissance du dispositif de chauffage (2) dépasse une mesure prédéfinie et que dans le même temps, la température réelle de l'eau chaude sur l'échangeur de chaleur (1) est inférieure à une température de consigne de l'eau chaude. - Procédé selon la revendication 1,
caractérisé en ce que
la surveillance de l'état d'encrassement est effectuée au choix de façon continue, de temps en temps, à intervalles réguliers ou en l'espace de moins de deux jours. - Procédé selon la revendication 1 ou 2,
caractérisé en ce que
la surveillance a lieu à partir d'une durée minimale de préparation d'eau chaude de plus de deux minutes. - Procédé selon l'une des revendications 1 à 3,
caractérisé en ce que
un état d'encrassement est reconnu lorsque la puissance varie de plus de 30% de la puissance maximale du dispositif de chauffage (2) pendant la surveillance. - Procédé selon l'une des revendications 1 à 4,
caractérisé en ce que
un état d'encrassement est reconnu lorsque la puissance du dispositif de chauffage (2) augmente à tel point pendant la surveillance, qu'un capteur de surveillance tel qu'un contrôleur de température éteint un brûleur (3) du dispositif de chauffage (2). - Procédé selon l'une des revendications 1 à 5,
caractérisé e n c e q u e
un état d'encrassement est reconnu lorsque la température réelle moyenne de l'eau chaude est inférieure de plus de 3°C à la température de consigne de l'eau chaude sur l'échangeur de chaleur (1) pendant la surveillance. - Procédé selon l'une des revendications 1 à 6,
caractérisé en ce que
le température réelle de l'eau chaude est surveillée sur un raccord de sortie d'eau chaude (4) de l'échangeur de chaleur (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009034556A DE102009034556A1 (de) | 2009-07-23 | 2009-07-23 | Verfahren zur Überwachung des Verschmutzungszustandes eines Wärmetauschers zur Warmwasserbereitung an einem Heizgerät |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2280230A2 EP2280230A2 (fr) | 2011-02-02 |
EP2280230A3 EP2280230A3 (fr) | 2012-03-21 |
EP2280230B1 true EP2280230B1 (fr) | 2013-06-05 |
Family
ID=42668482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10006935.0A Active EP2280230B1 (fr) | 2009-07-23 | 2010-07-06 | Procédé de surveillance de l'état de salissure d'un échangeur thermique sur un appareil de chauffage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2280230B1 (fr) |
DE (1) | DE102009034556A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013114385A1 (de) * | 2013-12-18 | 2015-06-18 | Endress + Hauser Wetzer Gmbh + Co. Kg | Heizelement für die Feuerung an Heiz- oder Dampfkesseln |
DE102014202478A1 (de) * | 2014-02-12 | 2015-08-13 | Robert Bosch Gmbh | Verfahren zur Diagnose einer Heizungsanlage mit mindestens einem Wärmetauscher |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT389584B (de) * | 1988-04-15 | 1989-12-27 | Vaillant Gmbh | Heizungsanlage |
DD292963A5 (de) * | 1990-03-16 | 1991-08-14 | Veb Technische Gebaeudeausruestung,De | Verfahren zur bestimmung des verschmutzungsgrades von waermeuebertragern |
DE4309313A1 (de) * | 1993-03-23 | 1994-09-29 | Armin Niederer | Verfahren zur Überwachung des Verschmutzungs- und/oder Verkalkungszustandes von Wärmetauschern in Heiz- oder Kühlanlagen |
DE19504325C2 (de) * | 1995-02-10 | 1997-07-17 | Tepcon Eng Gmbh | Verfahren und Vorrichtung zur kostenorientierten Überwachung und/oder Anzeige des Betriebszustandes eines reinigbaren Wärmetauschers |
DE19735558A1 (de) * | 1997-08-16 | 1999-02-25 | Bosch Gmbh Robert | Vorrichtung und Verfahren zur Brauchwassererwärmung |
DE102005006757A1 (de) * | 2005-02-15 | 2006-08-17 | Robert Bosch Gmbh | Kombiniertes Heizgerät zur Raumheizung und Warmwasserbereitung sowie Verfahren zum Betreiben desselben |
-
2009
- 2009-07-23 DE DE102009034556A patent/DE102009034556A1/de not_active Withdrawn
-
2010
- 2010-07-06 EP EP10006935.0A patent/EP2280230B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
EP2280230A2 (fr) | 2011-02-02 |
EP2280230A3 (fr) | 2012-03-21 |
DE102009034556A1 (de) | 2011-02-03 |
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