EP3098536A1 - Schätzverfahren eines temperaturprofils eines boiler-wasserspeichers - Google Patents

Schätzverfahren eines temperaturprofils eines boiler-wasserspeichers Download PDF

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Publication number
EP3098536A1
EP3098536A1 EP16171628.7A EP16171628A EP3098536A1 EP 3098536 A1 EP3098536 A1 EP 3098536A1 EP 16171628 A EP16171628 A EP 16171628A EP 3098536 A1 EP3098536 A1 EP 3098536A1
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EP
European Patent Office
Prior art keywords
water
reservoir
temperature profile
vertical axis
heating
Prior art date
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Granted
Application number
EP16171628.7A
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English (en)
French (fr)
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EP3098536B1 (de
Inventor
Nathanaël BEEKER-ADDA
Paul Malisani
Anne-Sophie Coince
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Electricite de France SA
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Electricite de France SA
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Classifications

    • 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021—Storage heaters
    • 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
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/223—Temperature of the water in the water storage tank
    • 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
    • F24H15/238—Flow rate
    • 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
    • F24H15/37—Control of heat-generating means in heaters of electric heaters
    • 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
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/04—Sensors
    • F24D2220/044—Flow sensors
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks
    • 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
    • F24H15/16—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
    • F24H15/164—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources where the price of the electric supply changes with time
    • 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
    • F24H15/176—Improving or maintaining comfort of users
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/296—Information from neighbouring devices

Definitions

  • the present invention relates to a method for estimating a temperature profile in a water heater type system.
  • the "energy mix” refers to the distribution of the different sources consumed for the production of electrical energy. This energy mix, in constant evolution, sees the constant progression of the Renewable Energys, which entails an increased need in flexibilities of the system.
  • the latter mainly represented by wind power and photovoltaics, do not allow a constant and regulated production, unlike a nuclear power plant, hence the problems of variability and predictability of the associated production. This makes the risks of the very short term increase sharply.
  • thermodynamic profile data ie more complex thermodynamic parameters than a simple temperature value, in particular the quantities of energy stored / storable in the storage tanks. these water heaters.
  • energies may be estimated in the form of heat capacity of water (4185 J kg -1. K -1) from the temperature and volume of the reservoir, but this amounts to model a tank with a volume of water of uniform temperature, which is in practice false and constitutes a strong approximation.
  • a more precise estimate of the temperature profile would allow a more precise control of the water heater park and thus an optimization of the energy consumption and a better adaptation compared to the variability of the productions at the local scale to satisfy the constraints on the network. , without prejudice to the comfort of the user.
  • WO2012164102 proposes a ball divided into several "layers" each equipped with a temperature sensor. From two temperature setpoints and measurements of these sensors, it is possible to calculate "variables of interest” such as the remaining energy capacity of the balloon or the minimum energy required to ensure that the water is uniform at the first temperature set point.
  • the invention relates to a water heater system comprising a water tank, a device comprising a heating means powered by an electrical network, a control module of said device, and an estimation set of a temperature profile according to the second aspect of the invention, adapted for the tank.
  • the invention relates to a computer program product comprising code instructions for executing a method according to the first aspect of estimating a temperature profile, when said program is executed. on a computer; and computer readable storage means on which a computer program product comprises code instructions for executing a method according to the first aspect of the invention for estimating a temperature profile.
  • the figure 1a represents the general architecture of an embodiment possibility of a system 1 for implementing the method according to the invention.
  • This system is typically a water heater, particularly Domestic Joule Water Heater (CEJ), although the invention is not limited thereto. 44% of the habitats are equipped.
  • the system 1 may be a thermodynamic water heater.
  • the electric heating means of the heating device 11 is generally a resistance, hence the heating of the water by joule effect.
  • it may be for example a complete heat pump whose hot source is in heat exchange with the water of the tank 10 (and the cold source in heat exchange for example with the outside air), so to allow heating of the water with an efficiency higher than 100%. This is called a thermodynamic water heater.
  • the device 11 is entirely electric (it thus includes only heating means powered by the network 2, and no gas burners for example). Heating energy supplied to the water is then entirely of electrical origin.
  • the system is however not limited to this configuration and the device 11 may alternatively furthermore comprise an alternative (non-electric) heating means such as a burner, an exchanger with a solar collector, etc.
  • the network 2 is a large-scale network that connects a plurality of electrical sources. As explained above, it is at the same time of energy of non-renewable origin (nuclear and / or fossil) and of renewable origin (solar, wind, etc.). Renewable energy presents problems of variability and predictability, while non-renewable energy is more readily available.
  • the network 2 encompasses both the global electricity network and the local electrical network of the home. user (in other words that the remote power plants and the local solar panels can both feed the heating device 11).
  • System 1 is temperature regulated.
  • it generally comprises, as explained, one or more temperature probes 20 and a control module 12 of the heating device 11.
  • the probe or sensors 20 continuously or intermittently send a signal representative of the temperature of the water of the tank 10
  • the present method can optionally provide, for example, an average temperature of the water of the reservoir 10 (in other words the temperature is no longer measured but estimated), which replaces the probe or probes. 20 which are not indispensable.
  • the control module 12 is typically an electronic card that triggers or not the heating according to the temperature of the water and many other possible parameters (programming, season, time periods, off-peak hours / full hours, usual uses of the user, etc.).
  • a Joule water heater usually comprises two threshold temperatures (the value of which may vary according to the moment and personal settings): a first threshold temperature which is the "minimum” temperature and a second threshold temperature which is the “maximum” temperature (the first threshold is below the second threshold). These two thresholds are a few degrees around (for example +/- 4 ° C) a temperature of "comfort” which is the desired average temperature set by the user (the interval 50-65 ° C is current).
  • the control module 12 is thus configured to activate the heating device 11 when the temperature (measured or estimated) is lower than the first predefined threshold, and / or configured to deactivate the heating device 11 when this temperature exceeds the second predefined threshold.
  • the heater 11 is stopped and that is between the two thresholds nothing happens. If the temperature decreases (with time or because the user draws hot water) and passes below the first threshold, the heater 11 is activity, and until the second threshold (maximum temperature, greater than the first threshold). The temperature then goes down again, and so on. In other words there is an alternation of "cooling" phases during which the temperature drops from the second threshold to the first threshold (see above if the user continues to use hot water), and phases of "heating" during which the temperature rises under the effect of the device 11 lit from a temperature less than or equal to the first threshold to the second threshold.
  • this configuration may depend on other parameters, and there may be more than two thresholds, possibly mobile, for example to optimize energy consumption during off-peak hours (water heaters are often provided for to raise the temperature of the water preferentially in the early morning, so as to maximize the use of the off-peak hours and to have hot water in quantity at the moment of showering).
  • water heaters are often provided for to raise the temperature of the water preferentially in the early morning, so as to maximize the use of the off-peak hours and to have hot water in quantity at the moment of showering).
  • the first and second thresholds are often the consequence of a hysteresis phenomenon around a median value, which defines these two thresholds.
  • the induced difference is then about 3 ° C.
  • the present invention is not limited to any particular configuration.
  • the water reservoir 10 extends along a substantially vertical longitudinal axis (the water heater balloons are generally substantially cylindrical).
  • a “linear" reservoir 10 that is to say composed of a base translated along said longitudinal axis, will be considered.
  • the present method proposes to estimate a temperature profile of the tank 10, ie to estimate the temperature as a function of a coordinate along said axis.
  • the temperature profile is one-dimensional.
  • T (h) the temperature in the reservoir 10 depends in the chosen model only on the height along said axis.
  • the temperature profile therefore expresses itself in the form of a function T (h), where h is in the interval [0, hmax] where hmax corresponds to the height of the reservoir 10.
  • T (h) where h is in the interval [0, hmax] where hmax corresponds to the height of the reservoir 10.
  • the objective is to obtain a spatial knowledge of the temperature within the tank, from which it will be possible to reliably and accurately estimate other quantities.
  • a point measurement of the temperature by a probe 20 is representative only of a local temperature, the actual average temperature being very different.
  • the present method thus makes it possible to substantially reduce the necessary approximations in existing water heaters.
  • the present method is perfectly adapted to a heater. existing water without intrusive modifications.
  • this temperature profile advantageously makes it possible to estimate a thermal quantity of the tank 10.
  • This thermal quantity can be of many types and can be for example chosen from an average temperature of the water of the tank 10, a temperature reservoir 10, a maximum temperature of the water of the reservoir 10, a quantity of energy stored in the reservoir 10, a quantity of energy still storable in the reservoir 10, and combinations of these quantities ( or any quantity directly derived from one of these quantities or one of their combinations).
  • the size can still be a hot water indicator available (or comfort indicator): for example the equivalent volume of hot water at 40 ° C (or another given temperature) available to the consumer, ie volume corresponding to the mixture water above 40 ° C in the flask mixed with cold water to obtain water at 40 ° C (alternatively, the energy contained in the hot water of the flask above 40 ° C) compared to cold mains water), and more generally any indicator of the amount of hot water available to the consumer, which can be defined using the temperature profile and values representing the consumer comfort requirements. .
  • a hot water indicator available for example the equivalent volume of hot water at 40 ° C (or another given temperature) available to the consumer, ie volume corresponding to the mixture water above 40 ° C in the flask mixed with cold water to obtain water at 40 ° C (alternatively, the energy contained in the hot water of the flask above 40 ° C) compared to cold mains water), and more generally any indicator of the amount of hot water available to the consumer, which can be
  • the size may still be a heating time required for the heater to have an effect on the previously defined comfort indicator. This variable comes from the fact that the heating of the balloon is by the bottom of the balloon, and affects the hot water layers of the balloon located at the top of the balloon only belatedly.
  • three characteristic heights of the tank are defined. It is noted that for each element the associated height may be the average height (for example the height of the center of the pipe for the water inlet E).
  • the inlet E is at the bottom of the tank, h2 is close to zero, the heating means is in the middle position, and the water outlet is at the top, ie h3 close to hmax (ie say h3 close to 1 if one is in standard scale).
  • the device 11 is not necessarily punctual and may have several heights, or even a certain length, ie extend between two values h1 i and h1 f .
  • the device 11 may comprise a resistance extending vertically, or even a "heating mantle” (ie a heat exchanger surrounding the tank, in particular in the case of a thermodynamic water heater).
  • a source extending between two values h1 i and h1 f can thus be approximated by a point source of height (h1 i + h1 f ) / 2, or considered as such for a more accurate result.
  • this is a layer stratification model of the water tank 10, the temperature is in practice not exactly one-dimensional, but as will be shown this model reproduced laminated balloon very realistically the thermodynamic behavior of the water and allows to obtain in a simple and fast way an excellent estimate of the aforementioned thermal quantities.
  • the present method is implemented by data processing means 30 which can take various forms. It is only important that these means 30 are on the one hand connected to the flow sensor 21, 22, and on the other hand adapted to receive data representative of an electrical consumption of the heating device 11. It will be understood that these can be the data representative of an electrical consumption of all the water heater, it is sufficient that data can recalculate the energy effectively transmitted to the water of the tank 10 during heating.
  • the processing means 30 are those of a dedicated module connected to the control module 12 and to an element 23 for measuring the electrical consumption of the water heater. This is for example a torus of intensity around the power cable of the system 1, and preferably the device described in the application FR1550869 . It is noted that the module 30 can be connected (via network connection means such as Wi-Fi, an Ethernet link, the PLC, etc.) to a box 31 which is an internet access equipment 3 of type " box "of an Internet access provider for the provision of general data useful for the implementation of the present method which will be described later. This is typically an embodiment in which one comes to equip an existing water heater.
  • these means 30 are integrated in the control module 12 of the water heater.
  • the device 11 since the device 11 is supplied with power via the module 12, its consumption is automatically available.
  • the figure 1b which represents such a case, it is typically a new water heater provided from the outset to implement the present method. As we see such a water heater may not include a temperature sensor 20.
  • the means 30 are those of a connected dedicated box such as a counter intelligent electric 32 (for example LINKY) via which the heating means of the device 11 is powered, and having a Transmitter Tele-Information Client (TIC) integrated or not.
  • a counter 32 directly has the consumption information of the heating device 11.
  • the means 30 are those of the box 31 for Internet access "box" type of an Internet access provider.
  • the box 31 receives from the control module 12 the consumption data.
  • the means 30 are those of a server of the Internet network 3.
  • the data (of consumption or of rate) are emitted (for example by the box 31 if it is configured to centralize them) in a request obtaining the thermal quantity.
  • Figures 1a-1e are five non-limiting and combinable examples.
  • any of these examples may use a device 11 for measuring the consumption of the system 1.
  • step (a) will consist of determining at least the final temperature profile T (h) f , according to the consumption and / or flow data, thanks to a system of partial differential equations of convection-diffusion.
  • the method comprises repeating step (a) so that the final temperature profile T (h) f along said vertical axis is used as the initial temperature profile T (h) i at the next iteration, and and so on.
  • the model is based on the calculation of the temperature profile using a system of two partial differential convection-diffusion equations with source term whose parameters depend on the flow rate, the injected power, and the parameters of the reservoir. (including geometric data such as the tank section). Local temperature heating is also modeled as a function of height.
  • the dynamics of these two profiles is governed by a system of partial differential equations, which can be possibly under changing edge conditions.
  • the basis of this system is a first conventional convection-diffusion equation, modeling the withdrawal of water in the flask and the effects of associated mixtures.
  • a second equation with different terms is added to model the other phenomena:
  • An energy source term modeling the resistance
  • a nonlinear convection term modeling the natural convection induced by the warming and a term of redistribution of the energy of the warming up to the temperature profile.
  • the first equation models the withdrawal of water in the reservoir 10 at the third height h3 and the effects of associated mixtures
  • the second equation modeling the heating of the water by the heating means of the device 11.
  • this model with a convection-diffusion equation, adds an equation modeling the heating of the water due to the resistance, its rise and the reinjection of the energy in the initial temperature profile.
  • An advantage of this model is that the position and operation of the heating element (value of h1 or interval [h1 i ; h1 f ]) can be modified without altering the validity of the model.
  • this model is universal, and allows as will be seen later to manage all the operating cases of the water heater, including during racking and / or water heating.
  • the means 30 calculate the evolution of the temperature as a function of the injection of the volume v of cold water to a Te temperature , thermal transfers between consecutive "elementary layers" (possibly depending on geometrical data such as the section of the reservoir, ie the exchange surface between two consecutive layers), static losses (exchange with the environment medium at a temperature Ta ) and power injection via the heating means.
  • the cold water temperature Te and the ambient temperature Ta can be measured, estimated from predefined weather data (historical or real-time) (from numerical simulations). ) or fixed. They can be received via the Internet 3.
  • the terms of the partial differential convection-diffusion equations are subordinated to withdrawal and / or heating behaviors over time, which are advantageously detected during step (a).
  • a volume of water withdrawn is determined as a function of the flow rates measured, the said volume of withdrawn water being added to the second height h2 at the temperature of predetermined cold water Te.
  • the first equation comprises a term representing the addition of said volume of withdrawn water to the tank 10 at the second height h2 at the predetermined cold water temperature Te.
  • the second equation comprises a term representing the application of said thermal input to the reservoir 10 at the first height h1 or the interval [h1 i ; h1 f ].
  • This physical model allows the means 30 to determine the final temperature profile T (h) f .
  • the tank 10 may have at least one temperature sensor 20 configured to emit a signal representative of the water temperature of the tank 10 at a given height (typical case of a modified water heater).
  • Step (a) then preferably comprises a control (ie verification) of the final temperature profile T (h) f as a function of said signal emitted by the sensor 20.
  • the means 30 compares T (h probe) with the measured temperature. If there is too much difference (it is normal that there is a difference because the model by strata is theoretical), the final temperature profile T (h) f are modified and the model is adapted.
  • the means 30 implement learning from said temperature measurements so as to improve the quality of the model.
  • step (b) (which can take place either at each cycle or at the request of the user or an application interested in this physical quantity)
  • the means 30 estimate as explained a thermal scale of the water tank 10 as a function of the final temperature profile T (h) f .
  • the thermal quantity is the total energy, it is proportional to ⁇ 0 h max T h f d h .
  • the estimated value can be just transmitted to the user (for example displayed on interface means) or stored (for example sent via network 3 for statistics), but also used in the operation of the water heater.
  • the method advantageously comprises a step (c) of controlling said heating device 11 by the control module 12 in function of said determined thermal magnitude. It can be a simple control to obtain a temperature of comfort, in particular in a water heater of the type of that of the figure 1 b. The thermal value can indeed replace any measurement of temperature while allowing a precise control.
  • step (c) comprises the reception of descriptive data of a state of the electrical network 2 by the data processing module 30, the determination of a setpoint as a function of said determined thermal quantity and the data values. description of a state of the electrical network 2, and the transmission of said setpoint to the control module 12 so as to modify an energy capacity of the water tank 10.
  • the idea is to alter the normal regulation of the tank temperature 10 and cause overheating / underheating. This is particularly easy to manage if the estimated thermal magnitude is a quantity of energy stored by the reservoir 10 or a quantity thereof, for example the remaining energy capacity of the reservoir 10, i.e. the amount of energy still storable.
  • the present method thus makes it possible to use the water heaters installed to manage the electrical production of renewable origin, easily and efficiently: the appropriate setpoint emission makes it possible to increase or decrease on demand the consumption of these products. water heater and play on stored energy as hot water. The energy capacity becomes flexible. Several TWh are thus available on the French territory for example.
  • the obtaining of the setpoint is carried out according to descriptive data of a state of said electrical network 2. These data designate Generally speaking, all information on the network load 2, the energy rate of renewable origin, the forecasts of variation of this rate, the production / consumption in general, etc.
  • These data can be generic data obtained locally, for example from meteorological origin, which can indicate to what extent the means of production of renewable energy will be productive, but preferably it is more complex data provided since the internet network 3 via the box 31, especially in real time.
  • the data used may in particular be the fields of ICT such as for example: the binary status of one or more virtual contacts, the tariff index of the current supplier and / or distributor grid, the price of electricity, the mobile peak notice and / or one or more points (s) mobile (s), etc.
  • ICT Transmitter Client Information
  • the means 30 determine a power setpoint (that is to say an effective power target value) as a function of the descriptive data of the state of the network 2.
  • the control module 12 then regulates the device 11 for heating power.
  • a first and / or a second type of operation can be implemented.
  • the first is the "boost mode” (in other words “forced run”) used to increase the consumption of the water heater and thus the amount of energy stored.
  • the means 30 are configured to transmit a power increase setpoint (in other words a power setpoint increasing the consumption of the heating means of the device 11) when the descriptive data of a state of said power grid 2 are characteristic of a current glut and / or a future energy deficit of origin renewable within said electricity grid 2 (in other words if the renewable generation is down in the short term), so as to increase the energy capacity of the water reservoir 10.
  • This supercharging mode is interesting either to absorb a strong photovoltaic production, or to prevent a low production. Thanks to the supercharging, the effect of the device 10 is amplified. This therefore increases the immediate consumption, but delays future consumption (since more energy is stored, the next crossing of the first temperature threshold is delayed).
  • the value of the power setpoint may be such as to consume as much as possible of the surplus energy of renewable origin without affecting the energy of non-renewable origin.
  • the value can also be a fixed value, or the current consumption value plus a predetermined deviation (eg + 500W).
  • this supercharging mode may be supplemented with certain options: if the data triggering supercharging is provided by a counter equipped with an ICT module, the latter may temporarily increase, at the same time as the activation of the water heater, the value cutting power to avoid any risk of tripping in the absence of a load shedder or energy manager.
  • the water heating system is slaved to the tariff signal via a dry contact or virtual contact, the latter must be controlled so as to allow the power supply of this system outside the normal ranges allowed if necessary.
  • the draw points of domestic hot water (shower, faucets, etc.) downstream are not all equipped with mixing valve, the addition of a mixing valve at the outlet of the tank 10 makes it possible to avoid risk of burns due to the supply of hot water.
  • the second mode is the "under-power” mode (in other words “reduced run”) used to decrease the consumption of the water heater and thus the amount of energy stored.
  • the means 30 are configured to issue a decrease instruction of power (in other words a power setpoint decreasing the consumption of the heating means of the device 11), when the descriptive data of a state of said power grid 2 is characteristic of a current deficit and / or a future glut renewable energy within said electricity grid 2 (in other words if the production of renewable origin is increasing in the short term), so as to reduce the energy capacity of the water reservoir 10.
  • the power drop instruction can be calculated so as to minimize energy consumption of non-renewable origin.
  • the idea is not to (or as little as possible) extract non-renewable energy from grid 2. It can also be a fixed value, or the current value of consumption minus a predetermined difference (for example -500W ).
  • the two modes can coexist and be implemented in turn.
  • the application of the power setpoint can be preceded and / or followed by a ramp to avoid a rebound effect, in other words the power setpoint is gradually increased / decreased (for example linearly over an interval of 30 minutes), instead of switching immediately.
  • the activation of one or other of the modes, the choice of a fixed or variable power set point, the temperature thresholds, etc., can be controlled by the user via a suitable interface.
  • the power regulation can not be done to the detriment of the user's comfort, and for each of the modes, the control module 12 can be configured to ignore the instruction of the user. power when the estimated thermal magnitude is representative of a potential degradation of the comfort of the user.
  • the means 30 can implement a decoy element role as described in the application FR1363229 .
  • the invention relates to an assembly for estimating a temperature profile adapted for a water tank 10 of an existing water heater.
  • each of these elements can fit on an existing water heater without substantial modifications, and keeping the temperature sensor.
  • step (c) it is sufficient to connect the processing means 30 to the control module 12, for example via an Ethernet cable.
  • the given processing means 30 must be configured to implement a module for determining a final temperature profile T (h) f of the reservoir 10 along said vertical axis from an initial temperature profile T (h) i , based on at least data representative of the energy consumption of said heating means of the device 11, withdrawn water flow measurements, and the first, second and third heights h1, h2, h3.
  • the invention also relates to the system 1 of "modified" water heater, that is to say comprising a water tank 10, a device 11 comprising a heating means powered by an electrical network 2, a control module 12 of said device 11, and an estimation set of a temperature profile according to the second aspect of the invention, adapted for the tank 10.
  • the invention also relates to the "new" water heater system 1, that is to say comprising a water tank 10, a device 11 comprising a heating means powered by an electrical network 2 and a control module 12 of said device 11, the control module 12 comprising data processing means 30 configured to implement the method of estimating a temperature profile of the tank 10 according to the first aspect of the invention.
  • the invention relates to a computer program product comprising code instructions for the execution (on data processing means 30) of a method according to the first aspect of the estimation invention.
  • a temperature profile of a water tank 10 as well as storage means readable by a computer equipment (for example a memory of the control module 12 if it contains the means 30) on which find this product computer program.

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  • 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)
  • Computer Hardware Design (AREA)
  • Fluid Mechanics (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP16171628.7A 2015-05-29 2016-05-27 Schätzverfahren eines temperaturprofils eines boiler-wasserspeichers Not-in-force EP3098536B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1554898A FR3036778A1 (fr) 2015-05-29 2015-05-29 Procede d'estimation d'un profil de temperature d'un reservoir d'eau d'un chauffe-eau

Publications (2)

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EP3098536A1 true EP3098536A1 (de) 2016-11-30
EP3098536B1 EP3098536B1 (de) 2018-04-11

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EP (1) EP3098536B1 (de)
FR (1) FR3036778A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3115878A1 (fr) * 2020-11-05 2022-05-06 Electricite De France Système et procédé d’estimation de consommation d’un chauffe-eau électrique
EP4047277A1 (de) * 2021-02-22 2022-08-24 Sagemcom Energy & Telecom SAS Verfahren zur steuerung einer warmwasserversorgung, entsprechendes versorgungssystem und entsprechender versorgungszähler

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1363229A (fr) 1963-04-08 1964-06-12 L Salvy & Fils Ets Agencement de corbeilles présentoirs superposables
FR1363237A (fr) 1963-04-17 1964-06-12 Antoine Besson & Lepeu Ets Perfectionnements apportés aux murs-rideaux
FR1453375A (fr) 1964-07-21 1966-06-03 Boehringer Sohn Ingelheim Procédés de préparation de nouveaux dérivés de la pipéridine
FR1452022A (fr) 1965-03-12 1966-09-09 Jouvenel & Cordier Perfectionnements aux distributeurs pneumatiques
FR1550869A (de) 1967-01-13 1968-12-20
US20070005190A1 (en) * 2004-05-22 2007-01-04 Feinleib David A Method, apparatus, and system for projecting hot water availability for showering and bathing
WO2010061264A1 (en) * 2008-11-28 2010-06-03 Ariston Thermo S.P.A. Method for minimizing energy consumption of a storage water heater through adaptative learning logic
WO2012164102A2 (en) 2011-06-03 2012-12-06 Vlaamse Instelling Voor Technologisch Onderzoek (Vito) Method and system for buffering thermal energy and thermal energy buffer system
WO2013014411A2 (en) * 2011-07-26 2013-01-31 Isis Innovation Limited System, method, and apparatus for heating
GB2518365A (en) * 2013-09-18 2015-03-25 Exergy Devices Ltd Apparatus and method for volumetric estimation of heated water

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1363229A (fr) 1963-04-08 1964-06-12 L Salvy & Fils Ets Agencement de corbeilles présentoirs superposables
FR1363237A (fr) 1963-04-17 1964-06-12 Antoine Besson & Lepeu Ets Perfectionnements apportés aux murs-rideaux
FR1453375A (fr) 1964-07-21 1966-06-03 Boehringer Sohn Ingelheim Procédés de préparation de nouveaux dérivés de la pipéridine
FR1452022A (fr) 1965-03-12 1966-09-09 Jouvenel & Cordier Perfectionnements aux distributeurs pneumatiques
FR1550869A (de) 1967-01-13 1968-12-20
US20070005190A1 (en) * 2004-05-22 2007-01-04 Feinleib David A Method, apparatus, and system for projecting hot water availability for showering and bathing
WO2010061264A1 (en) * 2008-11-28 2010-06-03 Ariston Thermo S.P.A. Method for minimizing energy consumption of a storage water heater through adaptative learning logic
WO2012164102A2 (en) 2011-06-03 2012-12-06 Vlaamse Instelling Voor Technologisch Onderzoek (Vito) Method and system for buffering thermal energy and thermal energy buffer system
WO2013014411A2 (en) * 2011-07-26 2013-01-31 Isis Innovation Limited System, method, and apparatus for heating
GB2518365A (en) * 2013-09-18 2015-03-25 Exergy Devices Ltd Apparatus and method for volumetric estimation of heated water

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3115878A1 (fr) * 2020-11-05 2022-05-06 Electricite De France Système et procédé d’estimation de consommation d’un chauffe-eau électrique
EP3995785A1 (de) * 2020-11-05 2022-05-11 Electricité de France System und verfahren zum schätzen des verbrauchs eines elektrischen wasserboilers
EP4047277A1 (de) * 2021-02-22 2022-08-24 Sagemcom Energy & Telecom SAS Verfahren zur steuerung einer warmwasserversorgung, entsprechendes versorgungssystem und entsprechender versorgungszähler
FR3120115A1 (fr) * 2021-02-22 2022-08-26 Sagemcom Energy & Telecom Sas Procede de controle d’une distribution d’eau chaude sanitaire, systeme de fourniture et compteur de distribution associes.

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FR3036778A1 (fr) 2016-12-02
EP3098536B1 (de) 2018-04-11

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