FR2582788A1 - Device for controlling an electrically heated hydro-accumulator, virtually using only "off-peak" power, with a possibly associated electrical floor. - Google Patents

Device for controlling an electrically heated hydro-accumulator, virtually using only "off-peak" power, with a possibly associated electrical floor. Download PDF

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Publication number
FR2582788A1
FR2582788A1 FR8500329A FR8500329A FR2582788A1 FR 2582788 A1 FR2582788 A1 FR 2582788A1 FR 8500329 A FR8500329 A FR 8500329A FR 8500329 A FR8500329 A FR 8500329A FR 2582788 A1 FR2582788 A1 FR 2582788A1
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peak
accumulator
hours
power
regulator
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G05D23/1923—Control of temperature characterised by the use of electric means characterised by the type of controller using thermal energy, the cost of which varies in function of time
    • 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
    • F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

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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)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Central Heating Systems (AREA)

Abstract

The invention relates to methods of design and construction of the automatic control of the "off-peak" load and of the restarting during "peak hours" of the hydro-accumulator using electrical heating alone, using the "off-peak" electricity principle. This control is carried out in progressive mode by a regulator acting, as a function of the external temperature, on a triac 3 interposed in the heating elements, both the main "off-peak" load ones N and NR and the "peak hours" restarting one NR. The adjustment slope is adjusted to generate systematically a sufficient accumulation, capable of coping with the statistical daily mean temperature drop of two consecutive days, depending on the climate in question. The manual "peak hours" restarting 8, as well as being adjusted automatically, may be amplified by means of a potentiometer 9 up to the power of the restart heating element NR; it is automatically eliminated by the engagement of the tariff-load clock 5 on the return to "off-peak" operation.

Description

La présente demande de brevet d'invention concerne les modalités conceptuelles et constructives des commande et régulation de charge, tant aux "heures creuses" qu'en relance partielle aux "heures pleines" lorsque celle-ci s'avère momentanémen* nécessaire, d'un hydro-accumulateur a réchauffage uniquement électrique avec utilisation quasi-totale d'électricité "heures creuses".The present invention patent application concerns the conceptual and constructive methods of charge control and regulation, both at "off-peak hours" and partial revival at "full hours" when the latter proves momentary * necessary, to a hydro-accumulator with only electric heating with almost total use of "off-peak" electricity.

La figure 1/2 représente la courbe de pilotage automatique du réchauffage électrique ( P = puissance totale des résistances) aux "heures creuses" et en relance aux "heures pleines" en fonction de la température extérieure de base du site (-10 C par exemple); 3 cas de relance y sont représentés chacun par leur palier de limitation maximale: 1/3, 1/2 et 2/3.Figure 1/2 shows the automatic pilot curve for electrical heating (P = total power of the resistors) during "off-peak hours" and in revival at "peak hours" as a function of the base exterior temperature of the site (-10 C by example); 3 cases of recovery are each represented by their maximum limitation level: 1/3, 1/2 and 2/3.

La courbe en pointillés (1 9-C) représente la sollicitation theorique des résistances de charge dans l'intervalle de variation de la température extérieure de +19 OC (O) à -io0c (100'Jo), pris comme exemple.The dotted curve (1 9-C) represents the theoretical loading of the load resistances in the range of variation of the outside temperature from +19 OC (O) to -10 ° C (100'Jo), taken as an example.

Chaque période de charge aux "heures creuses" étant destinée à couvrir les besoins de chauffage de la période "heures pleines" postérieure, la courbe (l9-C) doit être corrigée afin de prendre en compte la variation statistique de la température moyenne de 2 jours consécutifs, en supposant cet écart systé- matiquement positif (Tmj1) Tmj2); ltétude statistique des tem pôratures moyennes journalières montre que cet écart diffère selon que l'on considère les périodes situées à une extrêmité ou à l'autre de l'abscisse (Te); par exemple, pour un climat donné: - Pour Tmj voisine de +150C, le Tmj 2 = 60C environ - Pour Tmj voisine de -100C, le Tmj 2 = 40C environ.As each "off-peak" charging period is intended to cover the heating needs of the subsequent "full hours" period, the curve (l9-C) must be corrected to take into account the statistical variation of the average temperature by 2 consecutive days, assuming this systematically positive deviation (Tmj1) Tmj2); The statistical study of the average daily tem peratures shows that this difference differs according to whether we consider the periods located at one end or the other of the abscissa (Te); for example, for a given climate: - For Tmj close to + 150C, the Tmj 2 = around 60C - For Tmj close to -100C, the Tmj 2 = around 40C.

La courbe de réglage du régulateur devient donc (25,B). The regulator adjustment curve therefore becomes (25, B).

Enfin, compte tenu des apports de chaleur gratuite dans les locaux d'habitation, il est d'usage d'admettre que le maintien d'une température intérieure de confort de 19 C nécessite la mise en service du chauffage vers 160C de température extéri- eure; la courbe réelle de régulation de charge devient donc (16,A,B,C). Finally, taking into account the supply of free heat in residential premises, it is customary to admit that maintaining an interior comfort temperature of 19 C requires the heating to be brought in around 160C outside temperature. had; the actual load regulation curve therefore becomes (16, A, B, C).

L'hydro-accumulateur ainsi régulé anticipe systématiquement la variation statistique à la baisse de la température moyenne entre 2 jours consécutifs.The hydro-accumulator thus regulated systematically anticipates the statistical variation to the drop in the average temperature between 2 consecutive days.

La figure 2/2 représente le schéma électrique qui permet d'obtenir le fonctionnement exposé ci-dessus; il est établi appareil en ordre de marche, en position d'arrêt en "heures pleines" et relance non sollicitée, et supposé équipé de 2 résistances identiques de réchauffage, à raison d'une par réservoir; ce schéma intègre puissance, régulation de puissance, asservissement, commandes et tklécommande, signalisation.Figure 2/2 represents the electric diagram which allows to obtain the operation exposed above; the device is established in running order, in the "full hours" stop position and unsolicited restart, and assumed to be equipped with 2 identical heating resistors, one per tank; this diagram integrates power, power regulation, servo, commands and remote control, signaling.

Dans le circuit de puissance (supposé triphasé), la rési- stance (1) est sous la dépendance du contacteur (N-R); elle est sollicite tant en "heures creuses" (N= nuit) qu'en relance aux "heures pleines" (R = relance); ce contacteur comporte un contact auxiliaire faisant auto-alimentation de la bobine en période de relance. La résistance (2) est sous la dépendance du contacteur (N) et n'est sollicitée qu'en "heures creuses"; ce contacteur comporte un contact auxiliaire pour signalisation lumineuse de l'utilisation en relance du contacteur précédent (N-R).In the power circuit (assumed to be three-phase), the resistance (1) is dependent on the contactor (N-R); it is requested both in "off-peak hours" (N = night) and in reminders for "peak hours" (R = reminders); this contactor comprises an auxiliary contact which self-supplies the coil during the recovery period. The resistance (2) is dependent on the contactor (N) and is only requested in "off-peak hours"; this contactor includes an auxiliary contact for light signaling of the restarting use of the previous contactor (N-R).

Au travers des contacteurs (N) et (N-R), les résistances (1) et (2) sont sous la dépendance d'un triac commun (3) pilote en fonction de la température extérieure par un régulateur automatique (non représenté) dont le signal de commande agit en (tri). Ce régulateur est en service continu et délivre sur le triac le signal correspondant à la température extérieure instantanée, 24 heures sur 24; en outre le triac reçoit entre ses bornes P et 0, soit un shunt (pilotage exclusif par le régulateur), soit un potentiom & re de réglage à distance dont le signal se superpose à celui du régulateur (signal de commande du régulateur majoré de l'affichage nanuel au potentiomètre); le relai (n) permet, par son contact inverseur, le passage automatique de l'un à l'autre.Through the contactors (N) and (NR), the resistors (1) and (2) are dependent on a common triac (3) piloted as a function of the outside temperature by an automatic regulator (not shown) whose control signal acts in (sorting). This regulator is in continuous service and delivers on the triac the signal corresponding to the instantaneous outside temperature, 24 hours a day; in addition, the triac receives between its terminals P and 0, either a shunt (exclusive control by the regulator), or a remote adjustment potentiometer whose signal is superimposed on that of the regulator (regulator control signal increased by the 'nanometer display on potentiometer); the relay (n) allows, by its change-over contact, automatic switching from one to the other.

A noter que le triac commun pourrait être remplacé par 2 triacs correspondant ciiacun aux résistances (1) et (2). Note that the common triac could be replaced by 2 triacs corresponding here to resistances (1) and (2).

L'ensemble du circuit de commande est sous la dépendance de l'interrupteur général (4), que nous basculons de l'arrêt (A) vers la marche (M). Le contact (5) de- l'horloge chanse-tarif
EDF est ouvert et le reste (nous sommes en "heures pleines").The entire control circuit is dependent on the main switch (4), which we switch from stop (A) to step (M). The contact (5) of the chanse-tariff clock
EDF is open and the rest (we are in "peak hours").

Les chaînes électriques de contrôle et sécurité (6) et (7) des 2 réservoirs sont alimentées; nous supposons que tous les contacts des thermostats et pressostats reliés en strie sur chacune d'elle sont fermés; les contacteurs (N) et (N-R) et les relais (A) et (B) restent ouverts.The electric control and security chains (6) and (7) of the 2 tanks are supplied; we suppose that all the contacts of the thermostats and pressure switches connected in streak on each one of them are closed; contactors (N) and (N-R) and relays (A) and (B) remain open.

Effectuons une relance par une impulsion manuelle sur le bouton-poussoir (8); la fermeture du contact entraine au travers de la chaîne de sécurité (7) et du second contact du relai (A), la mise sous tension des bobines du contacteur (N-R) et du relai (n) dont les contacts basculent; ces bobines restent sous-tension par leurs contacts d'auto-alimentation, après relachement et ouverture du bouton-poussoir (); la résistance (1) chauffe à puissance modulée en fonction de la température extérieure, et le triac inclus entre ses bornes P et 0 le potentiomètre (9) en position 0%.Let us carry out a restart by a manual impulse on the push-button (8); the closing of the contact leads through the safety chain (7) and the second contact of the relay (A), the energization of the coils of the contactor (N-R) and of the relay (n) whose contacts switch; these coils remain undervoltage by their self-supply contacts, after release and opening of the push button (); the resistor (1) heats at power modulated according to the outside temperature, and the triac included between its terminals P and 0 the potentiometer (9) in position 0%.

Le signal de mesure délivré par le régulateur sur la borne (';) du triac peut être amplifié par action nanuelle sur ce potentiomètre (9) et ce signal porté jusqu'à 1040; la rô- sistance (1) chauffe alors à pleine puissance; cette position maximale correspond su palier Y de la figure 1/2.The measurement signal delivered by the regulator on the terminal (';) of the triac can be amplified by nanometric action on this potentiometer (9) and this signal carried up to 1040; the resistance (1) then heats up to full power; this maximum position corresponds to the Y bearing of Figure 1/2.

La relance aux "heures pleines" s'effectue donc à puissance modulable entre les valeurs du signal correspondant d la température extérieure instantanée et le signal maxinouln (100-;) afficliable i.lanuellement sur le potentiomètre (9).The restart at "full hours" is therefore carried out with adjustable power between the values of the corresponding signal of the instantaneous outside temperature and the maxinouln signal (100-;) which can be displayed i.lanually on the potentiometer (9).

Lorsque les valeurs limites dans la chaîne de sécurité (7) sont atteintes, cette chaîne s'ouvre et les bobines du contacteur (N-R) et du relai (B) ne sont plus alimentées; il en est de mCie en cas de coupure de secteur; Les contacteur et rlai reviennent A leur position de la figure 2/2; agrès retablissement du secteur, la relance doit être réenclenchée par action sur le houton-poussoir (8). When the limit values in the safety chain (7) are reached, this chain opens and the contactor (N-R) and relay (B) coils are no longer supplied; the same is true in the event of a power outage; The contactor and rai return to their position in Figure 2/2; After restoration of the sector, the restart must be reset by action on the push button (8).

Une relance en cours peut être effacée par ouverture de l'interrupteur général (4), suivie de sa referîneture autorisant la poursuite du fonctionnement automatique. L'interrupteur général (4) fermé, le contact horloge (5)(ou télécommande quelconque) se ferme au retour de la période "heures creuses"; le relai (A) bascule ses 4 contacts; les contacteurs (N) et (N-R) se ferment et leurs bobines sont sous-tension au travers des chaînes de sécurité (6) et (7) correspondantes, le basculement du dernier contact du relai (A) efface le relai (3) et le potentiomètre (9) est supprimé entre les bornes P et O du triac, remplacé par le s:iunt; le triac retrouve son pilotage intégral en fonction de la température extérieure par le régulateur automatique.A restart in progress can be deleted by opening the main switch (4), followed by its closing allowing the continuation of automatic operation. The main switch (4) closed, the clock contact (5) (or any remote control) closes at the end of the "off-peak" period; the relay (A) switches its 4 contacts; the contactors (N) and (NR) close and their coils are undervoltage through the corresponding safety chains (6) and (7), the switching of the last contact of the relay (A) clears the relay (3) and the potentiometer (9) is deleted between the terminals P and O of the triac, replaced by the s: iunt; the triac regains full control as a function of the outside temperature by the automatic regulator.

Une coupure secteur en "heures creuses" sera suivie d'une reprise de la marche normale, au retour. Le retour de la période "heures pleines" entraîne ltouerture du contact (5) et les 4 contacts du relai (A) reprennent la position de la figure 2/2; nous revenons à la possibilité de relance expo sée ci-avant.A power cut in "off-peak hours" will be followed by a resumption of normal operation, on return. The return of the "full hours" period causes the opening of the contact (5) and the 4 relay contacts (A) resume the position of FIG. 2/2; we return to the possibility of revival expounded above.

Le bouton-poussoir (8) qui con mande une relance "heures pleines1,, le voyant (10) qui signale une relance "heures pleines" en cours, peuvent être implantés en façade de coffret électrique, à distance dans l'un des locaux chauffes, ou répétés à distance.The push-button (8) which commands a "full hours1" stimulus, the indicator (10) which signals a "full hours" stimulus in progress, can be installed on the front of the electrical box, remotely in one of the rooms heated, or repeated remotely.

Le potentiomdtre (9) ne peut être qu'unique et implanté soit en façade de coffret, soit à distance.The potentiometer (9) can only be unique and installed either on the front of the box, or at a distance.

Si nous avions 3 résistances au lieu de 2, nous aurions alors 2 possibilités de relance plafonnées l'une au 1/3 correspondante au palier X de la figure 1/2, l'allure aux 2/3 correspondante au palier Z.If we had 3 resistances instead of 2, we would then have 2 possibilities of recovery capped one at 1/3 corresponding to the stage X of figure 1/2, the pace at 2/3 corresponding to the stage Z.

Enfin, si l'hydre-accumulateur était doublé d'un réchauffage par câbles électriques noyés dans le sol de la construction, se servant de celui-ci comme accumulateur compltei;:elltaire en "heures creuses", il serait adjoint au schéma de la figure 2j2 un ou plusieurs contacteurs cte co.mmantie du type (:
Dans ce cas, la relance en "heures pleines" du sol ii'a pas d'intérêt compte tenu de l'inertie d l'émission de la chaleur. Finally, if the hydra-accumulator was doubled by a heating by electric cables buried in the ground of the construction, using this one as accumulator completes; elltaire in "off-peak hours", it would be added to the diagram of the figure 2j2 one or more side-mounted contactors of the type (:
In this case, the recovery in "full hours" from the ground is of no interest in view of the inertia of the heat emission.

Claims (5)

RevendicationsClaims 1 - Dispositif de pilotage de la charge électrique d'un hydro 1 - Device for controlling the electrical charge of a hydro accumulateur caractérisé en ce que le réchauffage de l'ac accumulator characterized in that the heating of the ac cumulateur est constamment soumis, tant en "heures creuses" accumulator is constantly subject, both in "off-peak hours" qu'en relance aux "heures pleines", à un régulateur auto that in stimulus at "peak hours", to an auto regulator matique agissant, d'une manière constamment progressive et matic acting, in a constantly progressive way and inversement proportionnelle aux variations de la tempéra inversely proportional to variations in temperature ture extérieure seule ou de l'action conjointe de la tem external ture alone or joint action of the tem pôrature extérieure et du vent. exterior and wind protection. 2 - Dispositif selon revendication 1 ci-dessus caractérisé en2 - Device according to claim 1 above characterized in ce que l'accumulation en "heures creuses" anticipe systé what the accumulation in "off-peak hours" systematically anticipates matiquement la baisse de la température moyenne de la materially lowering the average temperature of the période de décharge posterieure, ceci étant obtenu pan posterior discharge period, this being obtained pan l'affichage sur le régulateur d'une pente prenant un compte the display on the regulator of a slope taking an account la variation statistique à la baisse de la température the statistical variation at the drop in temperature moyenne journalière de 2 jours consécutifs. daily average of 2 consecutive days. 3 - Dispositif selon revendication 2 ci- dessus caractérisé  3 - Device according to claim 2 above characterized en ce que l'enclenchement de la relance aux "heures pleines" in that the triggering of the stimulus at "peak hours" a pour effet de solliciter le relai B qui entraine l'inclu has the effect of requesting the relay B which causes the included sion du potentiomètre (9) dans la commande du triac (3), potentiometer (9) in the triac control (3), lequel potentiomètre permet d'appeler jusqu'en totalité la which potentiometer allows you to call up the entire puissance de la résistance de relance, ce qui fait qu'une power of the stimulus resistor, so that a relance aux "heures pleines" autorise un réchauffage manus  restart at "full hours" authorizes manual reheating ellement ajustable, variant de la puissance imposee dans adjustable, varying from the power imposed in l'insbantané par le régulateur à la puissance de cette the instantaneous by the regulator to the power of this résistance de relance. stimulus resistance. 4 - Dispositif selon revendication 3 ci-dessus caractérisé en4 - Device according to claim 3 above characterized in ce qu'une relance aux "heures pleines" s'efface manuelle that a reminder at "full hours" is cleared manually ment par action sur l'interrupteur général (4) et automa by action on the main switch (4) and automa tiquement au retour de la période "heures creuses" qui suit, after returning from the following off-peak period, par la fermeture du contact (5) de l'horloge change-tarif  by closing the contact (5) of the rate-change clock EDF, avec dans les 2 cas, effacement du potentiomètre (9) EDF, with in both cases erasing the potentiometer (9) et retour à l'action du régulateur seul agissant en fonction  and return to the action of the regulator alone acting in function de la température extérieure. outside temperature. 5 - Dispositif selon revendication 4 ci-dessus caractérisé en 5 - Device according to claim 4 above characterized in ce que le pilotage du réchauffage électrique "heures creuses" what the control of electric heating "off-peak" de I'hydro-accumulateur s'applique simultanément sur un of the hydro-accumulator is applied simultaneously on a plancher chauffant électrique lequel constitue ainsi un electric heated floor which thus constitutes a accumulateur de complément.  complement accumulator.
FR8500329A 1985-01-09 1985-01-09 DEVICE FOR CONDUCTING THE HYDRO-ACCUMULATOR WITH NEARLY TOTAL "HOLLOW HOURS" ELECTRICAL HEATING, WITH AN ASSOCIATED ELECTRICAL FLOOR Expired FR2582788B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8500329A FR2582788B1 (en) 1985-01-09 1985-01-09 DEVICE FOR CONDUCTING THE HYDRO-ACCUMULATOR WITH NEARLY TOTAL "HOLLOW HOURS" ELECTRICAL HEATING, WITH AN ASSOCIATED ELECTRICAL FLOOR

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Application Number Priority Date Filing Date Title
FR8500329A FR2582788B1 (en) 1985-01-09 1985-01-09 DEVICE FOR CONDUCTING THE HYDRO-ACCUMULATOR WITH NEARLY TOTAL "HOLLOW HOURS" ELECTRICAL HEATING, WITH AN ASSOCIATED ELECTRICAL FLOOR

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FR2582788A1 true FR2582788A1 (en) 1986-12-05
FR2582788B1 FR2582788B1 (en) 1987-10-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688085A1 (en) * 1994-06-17 1995-12-20 Schlumberger Industries S.A. Temperature control system with tariff change optimization
FR3015648A1 (en) * 2013-12-20 2015-06-26 Electricite De France POWER REGULABLE ELECTRICAL HEATING DEVICE
WO2015135934A1 (en) * 2014-03-11 2015-09-17 Electricite De France Power-adjustable electric water heater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105352023A (en) * 2015-12-02 2016-02-24 宋世海 Secondary heat exchange and heat supply system having low-valley electrical heating energy storage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1559304A (en) * 1967-03-14 1969-03-07
DE2348741A1 (en) * 1973-09-28 1975-04-10 Herbert Kirn Control system for off peak electric storage heating - regulated off peak input according to average ambient temperature
DE3410025A1 (en) * 1983-05-10 1984-11-15 Siemens AG, 1000 Berlin und 8000 München Computer-aided heating regulator for electrical storage-heating apparatuses
EP0129140A1 (en) * 1983-06-16 1984-12-27 Gerhard-Günter Gassmann Energy saving remote control data receiver for electric storage heaters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1559304A (en) * 1967-03-14 1969-03-07
DE2348741A1 (en) * 1973-09-28 1975-04-10 Herbert Kirn Control system for off peak electric storage heating - regulated off peak input according to average ambient temperature
DE3410025A1 (en) * 1983-05-10 1984-11-15 Siemens AG, 1000 Berlin und 8000 München Computer-aided heating regulator for electrical storage-heating apparatuses
EP0129140A1 (en) * 1983-06-16 1984-12-27 Gerhard-Günter Gassmann Energy saving remote control data receiver for electric storage heaters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688085A1 (en) * 1994-06-17 1995-12-20 Schlumberger Industries S.A. Temperature control system with tariff change optimization
FR3015648A1 (en) * 2013-12-20 2015-06-26 Electricite De France POWER REGULABLE ELECTRICAL HEATING DEVICE
WO2015135934A1 (en) * 2014-03-11 2015-09-17 Electricite De France Power-adjustable electric water heater
FR3018593A1 (en) * 2014-03-11 2015-09-18 Electricite De France REGULABLE HEATING WATER HEATER

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