EP2908059B1 - Procédé de diagnostic d'une installation de chauffage doté d'au moins un échangeur thermique - Google Patents
Procédé de diagnostic d'une installation de chauffage doté d'au moins un échangeur thermique Download PDFInfo
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- EP2908059B1 EP2908059B1 EP15151896.6A EP15151896A EP2908059B1 EP 2908059 B1 EP2908059 B1 EP 2908059B1 EP 15151896 A EP15151896 A EP 15151896A EP 2908059 B1 EP2908059 B1 EP 2908059B1
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- heat exchanger
- determined
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- threshold
- fluid
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- 238000000034 method Methods 0.000 title claims description 38
- 238000010438 heat treatment Methods 0.000 title claims description 33
- 238000003745 diagnosis Methods 0.000 title claims description 15
- 238000009434 installation Methods 0.000 title claims 3
- 239000012530 fluid Substances 0.000 claims description 31
- 238000012546 transfer Methods 0.000 claims description 31
- 239000008236 heating water Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000004393 prognosis Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
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- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- COCAUCFPFHUGAA-MGNBDDOMSA-N n-[3-[(1s,7s)-5-amino-4-thia-6-azabicyclo[5.1.0]oct-5-en-7-yl]-4-fluorophenyl]-5-chloropyridine-2-carboxamide Chemical compound C=1C=C(F)C([C@@]23N=C(SCC[C@@H]2C3)N)=CC=1NC(=O)C1=CC=C(Cl)C=N1 COCAUCFPFHUGAA-MGNBDDOMSA-N 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- 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
- 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
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
-
- 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
- F24H15/104—Inspection; Diagnosis; Trial operation
-
- 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
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/215—Temperature of the water before heating
-
- 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
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- 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
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/269—Time, e.g. hour or date
-
- 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
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/281—Input from user
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/48—Water heaters for central heating incorporating heaters for domestic water
- F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
-
- 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
- F24H15/395—Information to users, e.g. alarms
Definitions
- the invention relates to a method for the diagnosis of a heating system with at least one heatable heat exchanger, which is flowed through by a fluid to be heated.
- the invention also relates to a heating system in which the method for diagnosis runs.
- Heat exchangers are used wherever a cold medium, such as water, is to be heated by heat transfer. With increasing use and aging of the heat exchanger decreases its heat transfer performance, for example due to pollution. Therefore, a heat exchanger must be cleaned at regular intervals.
- the EP 0 617 239 A2 discloses a method and a heating system having the features of the preamble of independent claims 1 and 10.
- the EP 0 155 826 A2 and the US 2005/0133211 A1 disclose the use of a calculated heat transfer coefficient of a heat exchanger to diagnose the fouling condition of the heat exchanger.
- a fluid is defined as a flowable substance which can absorb, store and release heat, such as a gas or a liquid.
- solid substances are also conceivable which can store and release heat.
- the term fluid is used here, it is meant in general heat transfer media that can be used in a heating system.
- a heat exchanger is understood to mean a device for transferring heat to a fluid.
- the term heat exchanger is also used synonymously.
- the time for heating the fluid by a certain or determinable temperature is also abbreviated as the warm-up time.
- one or more parameters are determined and / or stored, such as the time for heating the fluid by a certain or determinable temperature, that is, the warm-up time, and / or a heat transfer coefficient of the heat exchanger and / or a temperature difference between a flow and return temperature of the heat exchanger, which has the advantage that this information can be used for diagnostic and / or prognostic purposes, for example, with respect to the state of the heat exchanger. It is advantageous if a message, in particular about a reduced functionality of the heat exchanger, in particular due to contamination, issued and / or stored as soon as the number of cases in which the parameter or reaches a certain or determinable threshold, a certain or determinable value exceeds. Such a hysteresis has the further advantage that a message is not issued immediately at the first occurrence of such a case, but that the accumulation of occurring cases can be regarded as a reliable indication.
- a power of a pump in a first Operarounik can be used as an indicator. If, for example, a higher power of the pump is required in the course of time, with a constant or even decreasing temperature difference, this indicates a reduced functionality.
- the flow temperature in particular via a first sensor in the flow of the first GeneralMap Vietnamese Republic of China
- the return temperature in particular via a second sensor in the return of the first Generalost Vietnamese Republic of China
- At least one threshold value for the parameter or parameters is specified and / or calculated, if they have not yet been determined. Also, at least one value each is given as an upper bound for the number of cases in which the parameter (s) reach the associated threshold, if it has not yet been determined.
- the parameter (s), the respectively associated threshold value and / or the respectively associated value for the number of cases in which the respective threshold value is reached are recorded and / or output and / or can be read out.
- a counter is initiated as soon as the threshold is reached for the first time, and the counter is incremented as the parameter (s) reach the respective threshold once more.
- the counter is also initiated or incremented if the threshold is undershot or exceeded.
- the counter can be recorded and / or output and / or read out.
- the threshold value for the heat transfer coefficient can be calculated, which has the advantage that an accurate, theoretical value can be used as the reference value.
- the invention also relates to a heating system with the features of claim 10.
- FIG. 1 shows a heating system 10 with a heat generator 12, which is provided with a heat exchanger 14.
- a fluid such as heating water
- a second Operawit Vietnamese Republic 16 is used to heat cold hot water by means of a heat exchanger 20, for example in the continuous flow principle.
- the first Generalising réelle 16 has a pump 22 and a three-way valve 24 and a three-way valve 25 to ensure the circulation of the fluid.
- At least one heat consumer 25 is supplied with warm heating water.
- a sensor 26 in particular a temperature sensor, for measuring the flow temperature.
- a sensor 28 for measuring the return temperature.
- a sensor 30 measures the temperature of the cold water Entry through the heat exchanger 20
- a sensor 32 measures the temperature of the heated cold water after leaving.
- the heat generator 12 may be a variety of heaters that operate on fossil or renewable resources.
- the heat generator 12 with the aid of a blower 34 via a line 36, a gas-air mixture is supplied.
- this line 36 is still a valve 38.
- Exhaust products are passed through an exhaust pipe 40 to the outside.
- a flame generated by the gas burner 33 the fluid which circulates through the heat exchanger 14 is heated.
- the heating system 10 further includes a display 42 and a control and / or regulating unit 44, wherein it is located outside of the heat generator 12.
- the display 42 is attached to the heat generator 12.
- the heat generator 12, the control and / or regulating unit 44 and the display 42 are connected to each other and can communicate with each other.
- the heat generator 12 is still connected via the control and / or regulating unit 44 with the heat consumer 25 and with other control or regulating elements, such as with the pump 22, the valves 23, 24, the blower 34, the valve 38 and /. or with a room thermostat to ensure an even more optimized and flawless operation.
- Conceivable in this case is a wired or a wireless connection, as well as a mixture of these types of connections.
- control and / or regulating unit 44 may also be located within the heat generator 12.
- Other embodiments are also conceivable. The same applies to the display 42.
- the time for heating the fluid through the heat exchanger 14, 20, called warm-up time briefly, its heat transfer coefficient and the temperature difference between flow and return temperature of the heat exchanger 14, 20 are system inherent parameters and are used according to the invention as indicators of reduced efficiency of the heat exchanger 14, 20, especially due to pollution, used.
- the heat transfer coefficient decreases with increasing resistance of the heat exchanger 14, 20, which is the case, for example, precisely when the surface of the heat exchanger 14, 20 is increasingly polluted.
- the performance of the heat exchanger 14, 20, which leads to a higher warm-up time on the other hand, if one specifies a fixed duration, to a lower temperature difference after this time has expired.
- the determination of the warm-up time is dependent on the burner start.
- the time measurement starts at burner start and ends as soon as a setpoint temperature for the fluid, for example for the service water or heating water, has been reached.
- the core of the method is the output of a message when a heating of the fluid by a certain or determinable temperature longer than a predetermined or predeterminable time needed or if the heating by the heat exchanger 14, 20 of a certain or determinable mass flow of the fluid below a predetermined or predeterminable Temperature difference remains. Both cases can occur.
- the message is saved for later purposes, such as for a prognosis or diagnosis, so that it is retrievable at any time.
- the method is applicable in principle to any heat exchanger. In the following, it will be explained with reference to the heat exchanger 14.
- the user enters the parameter (s) to be diagnosed. He can make a diagnosis based on the warm-up time, the heat transfer coefficient or select the temperature difference between flow and return temperatures. It is also possible to select several modes at the same time, which are then executed in parallel or serially. In the following, the case is considered that all modes are selected and executed in parallel.
- step 52 the flow temperature via the sensor 26 and the return temperature via the sensor 28 are measured. Further, a target value for a temperature of the fluid, such as a target value for the temperature of the heating water and the service water, set.
- the values necessary for the method are specified or calculated, if they are not yet present.
- the values can be specified for the same systems. For example, they can be set as defaults that are used automatically or chosen by the user. They can also be entered by the user. For new or maintained systems, the values can be reset or recalculated.
- a threshold 56 is set or calculated in step 53. Further, a value or a maximum number 58 may be determined, which represents an upper bound for the number of cases in which the warm-up time reaches or exceeds the threshold 56. If the maximum number 58 is 20, for example, a message is issued when the 21st case of an increased warm-up time occurs. Threshold 56 is present in the system as a default or can be changed or specified by the user.
- a threshold value 60 k threshold is set or calculated in step 54.
- ideal heat transfer conditions of the heat exchanger 14 are assumed.
- ⁇ T threshold is a fixed, predetermined temperature difference between an ideal, for example, unpolluted, heat exchanger, which is heated by the hot air generated by the gas burner 33, and the heating water to which the heat is dissipated, A the free heat transfer surface , ⁇ the masses - or volume flow and c the heat capacity of the fluid. The temperature and the mass flow can be measured via corresponding sensors.
- ⁇ T threshold the fixed averaged logarithmic temperature difference associated with the ⁇ T threshold which is determined from the fixed preset temperatures of the inlet and outlet of the ideal heat exchanger.
- the hot exhaust gas of the gas burner 33 flows, which cools and transfers its heat energy to the heating water.
- step 54 is also the specification of a maximum number 62 for the heat transfer coefficient, from which a message about the reduced functionality of the heat exchanger 14 is to be output.
- the maximum number 62 gives an upper limit to the number of cases where the heat transfer coefficient falls below the threshold value 60.
- a threshold value 64 and a maximum number 66 for the temperature difference is set or calculated in step 55, analogous to the steps 53 and 54.
- the maximum number 66 is an upper bound for the Number of cases in which the temperature difference falls below the threshold 64. If the flow and return temperatures have not yet been measured, for example because step 52 has been skipped, then this is done in step 55.
- a threshold value 65 for the power of the pump 22 is additionally set in step 55. Alternatively it can be calculated. The maximum number 66 is then an upper bound for the number of Cases in which the temperature difference reaches or falls below threshold 64 and the power of pump 22 reaches or exceeds threshold 67.
- a warm-up time counter 70, a heat transfer coefficient counter 72, and a temperature difference counter 74 are initiated. For example, they are set to 0.
- a time measurement for determining the warm-up time of the fluid through the heat exchanger 14 starts in step 76. If the heating water reaches the predetermined setpoint temperature, the time measurement is ended. The elapsed time is saved as the warm-up time.
- step 77 the heat transfer coefficient is calculated.
- k c ⁇ m ⁇ ⁇ ⁇ ⁇ T A ⁇ ⁇ ⁇ T ⁇ based on.
- ⁇ T is the (variable) temperature difference between the heat exchanger 14 and the heating water
- ⁇ T 2 ⁇ ⁇ T 1 was adopted, so that the log mean temperature difference is positive.
- ⁇ T 2 and ⁇ T 1 are defined as follows: At the first inlet of the heat exchanger 14, the temperature T inlet 1 of the hot air or the temperature of the heat exchanger 14 is measured. At the first outlet, the temperature T outlet 1 of the cooled air prevails in the exhaust gas line. At the second inlet, the entry of remindairesterrorisms in the heat exchanger 14, was in step 52, the return temperature measured by the sensor 28 constitu2 T, and the second outlet from the heat exchanger, the flow temperature T Austritt2 by the sensor 26.
- step 78 the calculation of the temperature difference between the flow and return temperatures is performed. If the flow and return temperatures have not yet been measured, for example because step 52 has been skipped, then the measurement is carried out before the temperature difference is calculated.
- step 80 the query takes place as to whether the respective parameters reach their associated threshold: it is queried whether the warm-up time is greater than the threshold 56, whether the heat transfer coefficient is less than the threshold 60, and if the temperature difference is less than the threshold 64 ,
- step 82 If this is not true (step 82), the counters 70, 72, 74 remain unchanged. The process continues at steps 76, 77, and / or 78, depending on whether the warm-up time, the heat transfer coefficient, and / or the temperature difference have been selected (step 50).
- step 80 If the query in step 80 is yes, the warm-up time is greater than the threshold value 56 or the heat transfer coefficient is less than the threshold value 60 or the temperature difference is less than the threshold value 64, the counters 70, 72, 74 are increased in step 84, for example at 1.
- the warm-up time is greater than threshold 56 and the heat transfer coefficient is less than threshold 60.
- counter 70 and counter 72 are incremented.
- the temperature difference is less than the threshold 64 and the Warm-up time greater than the threshold value 56.
- the counter 74 and the counter 72 are increased, etc. Which and how many counters have been increased, can also give an indication of a reduced functionality of the heat exchanger 14. Therefore, the current state of the counters 70, 72, 76 is stored and can be read out at any time.
- step 86 it is queried whether at least one of the counters 70, 72, 76 has reached or exceeded the associated maximum number 64, 66, 68.
- step 76 the method begins again at step 76, step 77 and step 78 if all three modes have been selected in parallel, as assumed in this embodiment.
- the heat generator 14 continues to run and it is checked again whether a reduced function or malfunction exists.
- step 82 in step 76, step 77, or step 78, whichever mode has been selected. Accordingly, mixed forms are possible. Also a serial processing of steps 76, 77, 78 is possible, which is not shown.
- the process may be interrupted in the meantime or prematurely ended to resume in a step of choice, for example in one of steps 50, 52, 53, 54, 55, etc.
- step 80 For example, if the method is interrupted in step 80 or another step and the user selects step 50, this corresponds to a kind of restart.
- Already measured or calculated parameters, such as the warm-up time, or messages have been saved and can be read out. You can enter new values that will be used as the basis for the diagnosis, or you will use preset default values or previously entered values.
- step 68 the Counter 70, 72, 74 initiated, for example, set to 0. For example, if at least one of the counters 70, 72, 74 was greater than this initial value, it is reset to this initial value.
- the procedure begins again with the count of injury cases, but uses the values and measurements already entered.
- the method may also be programmed to automatically switch to another selectable step after a selected step. It can also be turned off completely.
- a corresponding message is output and stored in step 88.
- the date and time of the message are saved with.
- the message may include text stating that the efficiency of the heat exchanger 14 is reduced, particularly due to contamination.
- the text may additionally state that the heat exchanger 14 requires maintenance or cleaning or the like.
- the message may additionally or solely consist of a flashing of a light source, such as a light-emitting diode, or of a sound, such as a one-time or multiple beep.
- Other types of messages are also conceivable.
- the message can persist until the user actively terminates it. Also conceivable is a one-time issue that does not have to be actively terminated. The message will be recorded for retrieval at a later time.
- a beep sounds for a few seconds, parallel to this, a red light is lit or flashing until the user acknowledges that he has acknowledged the message, for example, by pressing a button or a spoken command.
- the heat generator 12 continues to operate after notification, even if no maintenance or cleaning or the like has been performed, and even if the message persists.
- step 90 it is determined whether maintenance or cleaning or the like has been performed.
- step 76 the method continues at step 76, step 77 and step 78 if all three modes have been selected.
- the message continues to be output. For example, the flashing of a light-emitting diode continues.
- step 92 the parameter values such as the warm-up time, the heat transfer coefficient, the temperature difference, the flow and return temperatures, the counters 70, 72, 74 are reset.
- the process starts again at step 50 and the diagnostics of the heat generator 14 begin again.
- All values, whether entered, calculated or determined in the course of the procedure, are stored and recorded.
- the time of their creation is also stored. For example, it can be learned how quickly the warm-up time, the heat transfer coefficient or the temperature difference did not meet their respective thresholds 56, 60, 64, when the respective counters 70, 72, 74 were increased and when the maximum number 58, 62, 66 was achieved. Further, the timing and type of the message is stored in step 88.
- the memory can be reset to avoid a memory overflow. The time of maintenance is retained. The memory can also be reset manually. The user has access to all data for diagnostic and forecast purposes.
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Claims (10)
- Procédé de diagnostic d'une installation de chauffage (10) dotée d'au moins un échangeur de chaleur pouvant être chauffé (14, 20), qui est parcouru par un fluide à chauffer, dans lequel on émet et/ou on mémorise un message lorsqu'un chauffage du fluide d'une température déterminée ou déterminable nécessite plus de temps qu'un temps prédéterminé ou prédéterminable et/ou lorsque le chauffage par l'échangeur de chaleur (14, 20) d'un courant massique déterminé ou déterminable du fluide reste en dessous d'une différence de température prédéterminée ou prédéterminable, caractérisé en ce que l'on détermine et/ou on mémorise un coefficient de transfert thermique de l'échangeur de chaleur (14, 20) et en ce que l'on émet et/ou on mémorise un message, en particulier sur une efficacité fonctionnelle amoindrie de l'échangeur de chaleur (14, 20), notamment en raison d'un encrassement, dès que le nombre des cas dans lesquels le coefficient de transfert thermique atteint une valeur de seuil déterminée ou déterminable, dépasse une valeur déterminée ou déterminable (58, 62, 66).
- Procédé selon la revendication 1, caractérisé en ce que l'on détermine et/ou on mémorise le temps de chauffage du fluide d'une température déterminée ou déterminable et/ou une différence de température entre la température d'arrivée et la température de départ de l'échangeur de chaleur (14, 20) et en ce que l'on émet et/ou on mémorise un message, en particulier sur une efficacité fonctionnelle amoindrie de l'échangeur de chaleur (14, 20), notamment en raison d'un encrassement, dès que le nombre des cas dans lesquels le temps de chauffage et/ou la différence de température atteignent/atteint une valeur de seuil déterminée ou déterminable, dépasse une valeur déterminée ou déterminable (58, 62, 66).
- Procédé selon une des revendications 1 à 2, caractérisé en ce que l'on utilise la différence de température entre la température d'arrivée et la température de départ de l'échangeur de chaleur (14, 20) et une puissance d'une pompe (22) comme indicateur d'une efficacité fonctionnelle amoindrie de l'échangeur de chaleur (14, 20), notamment en raison d'un encrassement.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on détermine une température d'arrivée, en particulier au moyen d'un premier capteur (57) dans l'arrivée d'un premier circuit de chauffage partiel (54), et une température de départ, en particulier au moyen d'un second capteur (58) dans le départ du premier circuit de chauffage partiel (54).
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on prédétermine et/ou on mémorise, dans la mesure où elles n'ont pas encore été fixées, au moins chaque fois une valeur de seuil (56, 60, 64) pour le ou les paramètre(s) et au moins chaque fois une valeur (58, 62, 66) pour le nombre des cas, dans lesquels le ou les paramètre(s) atteint/atteignent la valeur de seuil (56, 60, 64).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on enregistre et/ou on émet et/ou on lit le ou les paramètre (s), la valeur de seuil respectivement correspondante (56, 60, 64) et/ou la valeur respectivement correspondante (58, 62, 66).
- Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'on déclenche un compteur, dès que la valeur de seuil (56, 60, 64) est atteinte pour la première fois, et en ce que l'on augmente le compteur, lorsque la valeur de seuil (56, 60, 64) est atteinte une nouvelle fois.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le compteur est enregistré et/ou émis et/ou lisible.
- Procédé selon l'une quelconque des revendications 5 à 8, caractérisé en ce que l'on calcule la valeur de seuil (58) pour le coefficient de transfert thermique, kseuil , selon la formule
ΔTseuil la différence de température moyenne logarithmique correspondant à ΔTseuil, qui est calculée à partir des températures d'entrée dans l'échangeur de chaleur (14, 20) et les températures de sortie de l'échangeur de chaleur (14, 20). - Installation de chauffage dotée d'au moins un échangeur de chaleur pouvant être chauffé (14, 20), qui est parcouru par un fluide à chauffer et dans laquelle on exécute un procédé de diagnostic notamment selon l'une quelconque des revendications précédentes, dans lequel on émet et/ou on mémorise un message lorsqu'un chauffage du fluide d'une température déterminée ou déterminable nécessite plus de temps qu'un temps prédéterminé ou prédéterminable et/ou lorsque le chauffage par l'échangeur de chaleur (14, 20) d'un courant massique déterminé ou déterminable du fluide reste en dessous d'une différence de température prédéterminée ou prédéterminable, caractérisée en ce que l'on détermine et/ou on mémorise un coefficient de transfert thermique de l'échangeur de chaleur (14, 20) et en ce que l'on émet et/ou on mémorise un message, en particulier sur une efficacité fonctionnelle amoindrie de l'échangeur de chaleur (14, 20), notamment en raison d'un encrassement, dès que le nombre des cas dans lesquels le coefficient de transfert thermique atteint une valeur de seuil déterminée ou déterminable, dépasse une valeur déterminée ou déterminable (58, 62, 66).
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DE102014202478.1A DE102014202478A1 (de) | 2014-02-12 | 2014-02-12 | Verfahren zur Diagnose einer Heizungsanlage mit mindestens einem Wärmetauscher |
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EP2908059A1 EP2908059A1 (fr) | 2015-08-19 |
EP2908059B1 true EP2908059B1 (fr) | 2019-03-13 |
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Cited By (1)
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WO2023235393A1 (fr) * | 2022-06-01 | 2023-12-07 | Laars Heating Systems Company | Système et procédé de détermination de capacité de transfert thermique d'un chauffe-eau indirect |
Families Citing this family (4)
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DE102017116834A1 (de) * | 2017-07-25 | 2019-01-31 | Samson Ag | Verfahren zur Diagnose eines Wärmetauschers |
DE102017214069A1 (de) * | 2017-08-11 | 2019-02-14 | Robert Bosch Gmbh | Verfahren zum Betreiben einer wärmetechnischen Anlage |
DE102021200834A1 (de) | 2021-01-29 | 2022-08-04 | Viessmann Climate Solutions Se | Heizungsanlage und verfahren zum betreiben einer heizungsanlage |
EP4206554A1 (fr) * | 2021-12-29 | 2023-07-05 | Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi | Système pour déterminer la durée de vie résiduelle d'un échangeur de chaleur de chauffe-eau |
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KR890001890B1 (ko) * | 1984-03-23 | 1989-05-30 | 더 뱁콕 앤드 윌콕스 컴퍼니 | 열교환기 성능 감지기 |
DE4309313A1 (de) * | 1993-03-23 | 1994-09-29 | Armin Niederer | Verfahren zur Überwachung des Verschmutzungs- und/oder Verkalkungszustandes von Wärmetauschern in Heiz- oder Kühlanlagen |
ATE406547T1 (de) * | 2001-05-03 | 2008-09-15 | Matts Lindgren | Verfahren und anordnung zur steuerung der temperatur des abgehenden stroms von einem wärmetauscher und messung von erzeugter hitze |
JP4624351B2 (ja) * | 2003-07-18 | 2011-02-02 | ローズマウント インコーポレイテッド | プロセス診断法 |
US7455099B2 (en) * | 2003-12-19 | 2008-11-25 | General Electric Company | Heat exchanger performance monitoring and analysis method and system |
DE102005043952A1 (de) * | 2005-09-15 | 2007-04-05 | Danfoss A/S | Wärmetauscher und Verfahren zum Regeln eines Wärmetauschers |
US20100206869A1 (en) * | 2009-02-13 | 2010-08-19 | General Electric Company | Heat pump water heater control |
DE102009034556A1 (de) * | 2009-07-23 | 2011-02-03 | Viessmann Werke Gmbh & Co Kg | Verfahren zur Überwachung des Verschmutzungszustandes eines Wärmetauschers zur Warmwasserbereitung an einem Heizgerät |
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- 2015-01-21 EP EP15151896.6A patent/EP2908059B1/fr active Active
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WO2023235393A1 (fr) * | 2022-06-01 | 2023-12-07 | Laars Heating Systems Company | Système et procédé de détermination de capacité de transfert thermique d'un chauffe-eau indirect |
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