WO2003038343A1 - Procede et dispositif permettant de mesurer, reguler et enregistrer une quantite d'energie acheminee a un consommateur lors d'une distribution d'energie - Google Patents

Procede et dispositif permettant de mesurer, reguler et enregistrer une quantite d'energie acheminee a un consommateur lors d'une distribution d'energie Download PDF

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Publication number
WO2003038343A1
WO2003038343A1 PCT/NO2002/000369 NO0200369W WO03038343A1 WO 2003038343 A1 WO2003038343 A1 WO 2003038343A1 NO 0200369 W NO0200369 W NO 0200369W WO 03038343 A1 WO03038343 A1 WO 03038343A1
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energy
consumer
temperature
circulation
medium
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PCT/NO2002/000369
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English (en)
Inventor
John Rekstad
Michaela Meir
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Solarnor As
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Priority to EP02768187A priority Critical patent/EP1451505A1/fr
Publication of WO2003038343A1 publication Critical patent/WO2003038343A1/fr

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Classifications

    • 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
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in 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
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1048—Counting of energy consumption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device

Definitions

  • the present invention relates to a method and means for measuring, controlling and recording a supplied amount of energy when energy is delivered to a consumer via a heat-carrying low-tempered circulation medium, for instance water. Delivery is effected via a circulation network for transporting the circulation medium forward and back in a closed path between an energy supplier and the consumer.
  • a heat-carrying low-tempered circulation medium for instance water.
  • the most usual manner of measuring energy consumption in systems for carrying heat by means of air or a liquid is to determine the temperature change of the heat-carrying medium as a result of the heat liberation, and the circulation rate of the heat-carrying medium, measured as mass per unit time.
  • the supplied power is equal to this temperature difference multiplied by the circulation rate and the heat capacity of the heat-carrying medium.
  • This method is not particularly well suited if the heat-carrying medium in the heating system has a relatively large circulation rate (quantity per unit time) and a small temperature change.
  • the complete floor area constitutes the heat-liberating surface, and the temperature difference between forward water and return water in such systems can often be less than one degree.
  • the energy measurement is often used to determine what should be paid by the consumer for used heat, and this makes demands on accuracy in the calculation.
  • the quantity of energy should be determined with an uncertainty less than 5 %, to make the method suitable as a basis for payment.
  • the accuracy in the temperature reading must be better than 0.05 degree. In practice this means a very costly sensor technology and strict measurement methodological requirements regarding positioning and organizing the temperature measurement.
  • volume flow rate measurements are relatively complicated also. Such volume flow rate measurements become particularly demanding in installations where the heat supply is regulated through the volume flow rate, as in the case with room thermostats connected to thermo-valves on a distributor.
  • Another basic principle for regulating heat supply is based on temperature control of the water by means of a shunt between forward and back lines. This makes even greater demands on a rapid and accurate recordation of the temperature difference.
  • this method requires that the pump is placed between the shunt and a distributor to the floor heating installation, which is not a practical feature in joint installations.
  • EP-A1-0 569 739 is previously known a system for a heating installation in which a circulation pump is switched in and out as a function of the deviation of the outside temperature from a preset temperature.
  • EP- B1-0 150 671 there is previously known a method for regulating a heating installation, based i.a. on measurement of the temperature of the circulation medium in the return line of a consumer installation. The method is based on intermittent operation, alternatively variable speed of the circulation pump, controlled i.a. by the return temperature relative to a fixed or variable reference temperature.
  • This method indicates also a method for determining supplied energy based on a circulation pump counter that measures the quantity of medium that has circulated in the consumer installation, and the temperature difference between supplied and returned circulation medium.
  • the energy measurement methods referred to are based on measurement of circulation rate and temperature difference between supplied medium and return medium. As mentioned, this becomes complicated when the temperature difference becomes sufficiently small.
  • the present invention aims at fulfilling this need, and therefore, in a first aspect of the invention there has been provided a method for measuring, controlling and recording a supplied quantity of energy when delivering energy to a consumer via a heat-carrying low-tempered circulation medium, using a circulation network for transporting the medium forward and back in a closed path between an energy supplier and the consumer, control being effected by regulating a duty factor in intermittent circulation of the medium to the consumer, as a function of measured variable parameters at the consumer's premises.
  • the method of the invention is characterized in that an energy quantity to be delivered adapted to the consumer's needs during a subsequent period of time, is calculated on the basis of the measurement values of said parameters as well as a known medium inlet temperature to the consumer, and the result of the calculation is used for controlling intermittent operation as well as for the recording of supplied quantity of energy.
  • a means for measuring, controlling and recording supplied quantity of energy when delivering energy to a consumer via a heat-carrying low-tempered circulation medium the means being attached to a circulation network for transporting the medium forward and back in a closed path between an energy supplier and the consumer, and comprising a regulating device operative to regulate a duty factor in intermittent circulation of the medium to the consumer's premises, as well as measuring devices for measuring variable parameters at the consumer's premises, which measuring devices are attached to a processor device included in the regulating device, for treatment of the parameters measured.
  • the means of the invention is characterized in that the processor device is operative for calculating a quantity of energy to be delivered adapted to the consumer's needs during a subsequent period of time, on the basis of a known medium inlet temperature to the consumer's premises, and as a function of the measurement values of the parameters, the regulating device further being operative for regulating on the basis of the energy quantity calculation conducted for the subsequent period of time, and for recording the energy quantity supplied.
  • the present invention consists in utilizing the specific physical characteristics of low-tempered heating installations, to control energy liberation in a manner that enables accurate and substantially simpler measurement of energy, than previously known methods.
  • Low-tempered heating installations are characterized in that large heating surfaces are heated. In practice, these surfaces exhibit a large heat capacity, so that supplied heat is first liberated to the heating surface, and thereafter from the heating surface to the object (the room) to be heated.
  • the heat stored in this type of distribution systems corresponds typically to heat consumption for duration of 1 to 10 hours. This means that if the heat is liberated continuously in a power-controlled system, or whether it is liberated in the form of energy pulses where the interval between pulses is substantially shorter than 1 hour, the secondary heat liberation from the heating surface to the object will not change noticeably.
  • heat liberation to the consumer premises is controlled by delivering heat in the form of energy pulses.
  • this is organized in such a manner that sensors record the parameters that are important for calculating the energy needs, and in connection with heating of buildings, the outside temperature and the solar irradiation through windows are the most important parameters.
  • the parameter values are read by a processor that calculates the need of heat delivered inside a time interval following thereafter, for instance 15 or 30 minutes.
  • the temperature of the heat-carrying medium determines how much energy, in the form of heat, should be liberated per unit time when the heat-carrying medium circulates at a constant rate through the heating system. Based on this information, the processor then calculates the necessary circulation time to liberate the correct amount of heat.
  • the method presupposes that one has made measurements, when making an initial regulating of the installation, of the circulation rate, or possibly that the circulation rate is sufficiently large that the temperature difference between supplied liquid and return liquid is small (for instance a couple of degrees or less).
  • the setting of the regulator can either be made from knowledge of heat liberation per unit area as a function of the temperature of the heat-carrying medium, or setting can be made successively on the basis of experiences regarding connection between liquid temperature and room temperature during operation of the plant.
  • Fig. 1 shows a conventional control arrangement for water-borne floor heating
  • Fig. 2 shows a simple example of a control arrangement in accordance with the present invention
  • Fig. 3 shows experimental temperature variations in a floor heating installation in a wooden floor, with energy supply in pulses
  • Fig. 4 shows measurement results during a number of days for a housing in which the duty factor is regulated in accordance with the present invention
  • Fig. 5 shows, diagrammatically, the relation between energy consumption, as determined by circulation time, and directly measured consumption, represented as a function of water temperature, and
  • Fig. 6 shows heat transfer from water piping to a room.
  • the perceptible effect from changing the temperature or the flow rate of the floor water appears only after a long time (some hours). Therefore, the installation must be controlled automatically to achieve a good and stable temperature, and to provide minimum energy consumption at the same time.
  • the energy consumption depends on the temperature level, and even differences of 2- 3 degrees, which are in themselves acceptable regarding comfort, may mean an energy consumption that is 15-20 % larger or smaller. Therefore, this represents a delicate challenge for the control automatics.
  • room thermostats for controlling floor heating installations is a very ordinary solution, however a solution that is questionable subjectwise and regarding energy consumption.
  • the reason is that the change in energy supply only takes place when the temperature in the room deviates from the desired level. Due to the previously mentioned inertia, such a correction on the basis of perceptible effect will come much too late, and it may therefore give rise to temperature fluctuations in the room, which fluctuations will often mean a substantially increased consumption of energy. In principle, the correct thing is therefore to control the installation on the basis of a future energy need. Measurements conducted over an extended time in various housings, show that the need of heating is primarily determined by the outside temperature. Particularly in spring and autumn, the solar irradiation through windows will also be of importance for the need of heating.
  • the density of floor piping and the quality of possible heat distributors in floors with a tier of beams also have importance for the regulating and hence for the energy consumption in the plant. It is important that the floor maintains an even and relatively moderate temperature across the whole surface (preferably below 26 degrees), and that this temperature, is not essentially lower than the temperature in and around the floor piping (good thermo coupling). Then, such floors have a significant self-regulating effect, a temperature change of one or two degrees changing the energy liberation from the floor drastically. Note however that it is not only the air temperature in the room that determines the liberation of heat, but to an equally large degree the temperature of the other surfaces (walls and ceiling) in the room.
  • Fig. 1 and Fig. 2 show two control systems that are both based on adjusting heat supply on the basis of an expected future need of heating.
  • the conventional solution see Fig. 1, is to use a shunt valve 1, where the temperature of the water going into the floor is varied by mixing hot water from a tank 6 and somewhat cooler return water from the piping 7 in the floor heating system.
  • the controller 2 determines the correct temperature by means of a temperature sensor 3 arranged outside, and is programmed to a certain functional interrelation between water temperature and outside temperature suitable for the building in question.
  • the shunt valve 1 is connected to a motor providing the desired mixing ratio between forward and return water at any time. This is recorded by means of a temperature sensor 4 on the pipe after valve 1 :
  • the circulation pump 5 operates on a continuous basis in this system.
  • Fig. 2 shows a simple example of an embodiment of the present invention.
  • This is a simplified system, in which the supply of heat to the floors is regulated through the operation of the pump 5 itself.
  • the need of heating is determined on the basis of the outside temperature, which temperature is measured by a temperature sensor 3, and possibly also on the basis of solar irradiation through windows.
  • the calculated quantity of heat necessary for a specified period, for instance 15 minutes, is then supplied to the floor by limitation of the circulation time.
  • the calculation of correct circulation time is based, in the same manner as for the shunt system, on the water temperature in question. Water temperature is measured by means of a sensor 4. A high water temperature will mean a short circulation time.
  • Fig. 4 displays measurement results from a private house in L ⁇ renskog, Norway, with floor heating as the sole source of heating. Heat is fetched from a heat store in which the temperature may vary. The temperature of the heat store is also the temperature of the water going into the floor, as shown at the top of the figure.
  • the outside temperature during the measurement period appearing in the lower part of the drawing, varies from +6 °C to -20 °C.
  • the inside temperature has been measured in two rooms having a beam tier floor and a concrete floor, as shown jn the middle part of the figure.
  • the figure shows that the room temperature is maintained at a very stable level, even when there is more than 25 ° variation in the outside temperature, and with variation in the temperature of the supplied water. Due to a high standard of insulation and the perception of temperature in a case of radiation heat, the comfort temperature is somewhat below 20 °C, and the control provides for a very good temperature stability, combined with a low energy consumption.
  • the energy consumption in low-tempered water-borne heating systems is often difficult to measure.
  • the main reason is that in the conventional method, which is based on a determination of energy consumption by measuring liquid flow and temperature difference between forward and return water, the uncertainty becomes too large because the temperature difference is often only a fraction of a degree.
  • Energy measurements are important, particularly in large installations with several users attached to the same energy source or system, because the energy costs should be apportioned in accordance with the consumption of each respective user.
  • the lack of acceptable measuring equipment has been a barrier to the use of low-tempered heating systems in such joint installations.
  • the present invention opens for a new manner of determining energy consumption.
  • Fig. 5 shows preliminary results of energy measurement based on circulation time in a specified installation.
  • the figure shows the ratio Q between energy supplied to the floor heating installation per day, as determined by measuring circulation time and such as recorded in the controller, and measured, supplied electrical energy (in a case where the system receives no other energy supply than electricity), plotted as a function of the temperature of the inlet water.
  • the two measurements give a satisfactory correspondence, i.e. it is realized that the ratio Q is close to 1. It appears from the figure that the absolute energy consumption may be determined with a precision of about 10-12 % in this manner.
  • the method and means in accordance with the invention are favorable regarding determining the relative energy consumption of several users attached to a common heating installation. In this case, the temperature of the heat- carrying medium supplied to each respective user, will be approximately the same. Under the assumption that the distribution systems are technically almost the same, the liberated heat per unit time will be proportional to the area of the heating surface, i.e. the heated floor area in the case with water-borne floor heating. Hence, the energy characteristic of each respective distribution system may be determined by measuring the circulation rate for each respective consumer when the installation is adjusted initially.
  • the supply of heat- carrying medium to the respective consumer may be regulated by means of a motor-controlled or thermally controlled valve that is connected to the temperature controller/energy meter with each respective consumer. Consequently, the method makes it possible to apportion the total energy consumption in the installation between the respective users in accordance with the relative consumption of energy.
  • the relative energy consumption can be determined in several ways: i) The present system is based on calculating the need of energy before delivering the energy, and thereafter delivering the energy in accordance with the calculated need. Thereby, the energy measurement, in its simplest form, may consist in summing the calculated quantities of energy and adding this in a register attached to the processor. ii) It is also possible to measure, in an independent manner, that the energy calculated to be supplied to the distribution system, is actually delivered. This is done by measuring the actual circulation time, and the temperature of the heat- carrying medium. There exists a functional interrelation between the energy quantity delivered during a period and the following parameters; the temperature of the heat carrier conveyed to the distribution system, the circulation time, the standstill time and the heat transfer coefficient.
  • the last mentioned parameter is determined by the constructive design of the distribution system. If the dimensions of the piping conveying the heat-carrying medium are very small, the quantity of heat that is delivered at standstill will be negligible. The energy actually liberated will then become directly proportional to the circulation time and the temperature difference between the temperature of the inlet heat carrier and a temperature that is representative of the constructional design of the distribution system.
  • the dimensions of the pipes in the distribution system will be large enough that the heat liberated at standstill, represents a significant contribution to the total energy amount liberated.
  • the heat liberated at standstill is functionally dependent on the number of standstill periods, the duration of the standstill period, the temperature of the heat carrier and the coefficient of heat transfer, iii) It is also possible to measure the temperature of the heat carrying medium when it returns after having delivered the heat in the distribution system. The temperature will change with time, and the temperature variation exhibits a characteristic progress that carries information regarding liberated quantity of heat. As soon as circulation starts, the temperature measured will be approximately equal to the temperature of the distribution system, if the medium that passes the temperature sensor has stayed some time inside the distribution system due to a standstill.
  • this medium After a certain period of time, this medium has been driven out, and a temperature increase will be recorded, characterized by the quantity of heat liberated from the medium when it circulates through the distribution system.
  • the temperature will approach asymptotically a limit value that is somewhat lower than the temperature of the heat-carrying medium before it is sent into the distribution system.
  • This temperature change is recorded using only one temperature sensor, and hence, one is not dependent on a temperature difference determination measured by means of two sensors having limited absolute accuracy.
  • the temperature of the water fed to the user premises is as low as possible. From this follows that the volume flow should be as large as possible (larger than jn conventional floor heating installations), and that the heat transfer from the heat-carrying water to the room is at a maximum.
  • the water temperature T must be controlled carefully from the instantaneous need of power.
  • the energy supply can be regulated by means of the circulation time of the water.
  • d running time parameter
  • d duty factor
  • supplied quantity of energy per time interval t can be controlled by varying d.
  • liberated energy may be measured using the same parameter d and the temperature Tv of the water.
  • Tv, TG and TR are water temperature, floor temperature and room temperature, respectively.
  • the coefficients of surface conductance UVG and UGR are for heat transfer from water to floor, and from floor to room, respectively.
  • Pi and P 2 are power flows, and CG is the heat capacity of the floor.
  • the floor temperature will be close to the room temperature, and the temperature difference between pipe and floor will vary in step with the water temperature.
  • the heat transfer between floor and room is poorer than between pipe and floor, the first mentioned will represent a barrier that causes the temperature difference between floor and pipe to stay relatively constant, even if the water temperature should vary.
  • the effect of a varying water temperature will depend on the heat capacity of the floor. A large heat capacity entails that the floor temperature equalizes fluctuations in the water temperature, and the temperature difference between water and floor will vary in step with the water temperature.
  • the heat transfer in periodical circulation can be expressed as the sum of the heat quantity transferred during circulation time t 0 d, designated q d , and the heat quantity transferred as a consequence of water standstill in the pipe, designated q s .
  • the first term corresponds to equation (2), with a multiplication by the running time tod.
  • Two effects contribute to the second term.
  • hot water will remain standing in the floor piping to liberate heat. Besides, during standstill the temperature will fall in the bulk of the floor with which the piping is interacting, since the floor liberates more heat than it receives from the pipe. The consequence is that when hot water starts circulating again in the pipe, the temperature of the bulk of the floor will for some time be lower than if the circulation had been going continuously.
  • Table 2 shows results for q d and q s respectively, with values calculated in table 1.
  • the table is valid for floors with a relatively high heat capacity, so that equation (7) is a good approximation. 0
  • the heat liberation at minimum running time (d ⁇ 5 %) is often 15-20 % of the heat liberation in continuous operation. On account of the temperature control as well as the energy measurement, this effect must be 5 compensated for.
  • the chosen compensation is that the period time increases when the relative running time becomes less than 10 or 20 %.
  • equation (2) must be modified in order to provide a reliable picture of energy transfer in floor heating installations.
  • a representation that is appropriate for various types of flow constructions, is obtained by starting with temperatures that can be measured or are relatively constant, namely the water temperature Tv of the forward water in the circulation installation and the room temperature TR.
  • Tv water temperature
  • TR room temperature
  • the transmission coefficient UVR has a known value for various floor constructions.
  • the heat transmission coefficient UVR is in range 6-9 W/m 2 deg.
  • UVR is in the range 2-3 W/m 2 deg, dependant on the thickness and the nature of the floor coating. Power transfer when using periodical circulation, can be expressed as
  • oc(d) is an attenuation factor expressing the degree of reduction of the heat transfer, as a consequence of limited running time t 0 d.
  • Good temperature control entails that the running time t 0 d is varied with water temperature Tv in such a manner that the power transfer becomes independent of the water temperature, when the external variables determining the need for heating, are constant.
  • the user determines the relation between duty factor d and water temperature. Mathematically, this relation can be expressed as an exponential function
  • d (Tv) exp[- ⁇ (Tvo)(T v - T vo )] (10) in which Tvo is chosen on the basis of a desired room temperature.
  • An empirical expression for ⁇ (Tvo) that provides good flexibility regarding adaptation of various floor constructions, is ⁇ (Tvo) a - b(Tvo-25), a and b being coefficients that can be chosen, a is chosen between 0 and 1, and b is chosen between 0 and 0.1.
  • the energy measurement takes as a starting point that the attenuation factor ⁇ (d) absorbs the various mechanisms resulting in reduced power transfer when running time is reduced.
  • ⁇ (d) is determined on the basis of measurements for various types of floor. Such measurements have shown that (d) can be expressed as an approximately linear function of d, as long as the period length to is constant. This functional relation can then be used to totalize the energy consumption q for every period t 0 during which the system is operating.
  • A is the floor area
  • TR room temperature
  • K is a parameter determined by the coefficient of heat transmission for the complete floor construction.
  • the parameter K is of importance if the method shall be used for absolute energy measurements.
  • a need of energy or heat in a given time period that can be chosen is calculated on the basis of measurable parameters, and care is taken that the correct quantity of energy is delivered to the user's premises by controlling circulation time or quantity, using intermittent admission, for the heat-carrying medium in accordance with the temperature held by the medium.
  • the calculated quantity of energy that is necessary per time period chosen is totalized in a register. If several users are attached to one joint heating system, the relative energy consumption of each respective user can be calculated easily. Moreover, the energy consumption can be determined by measuring the actual circulation time, the standstill time and the temperature of the supplied heat carrier.
  • the circulation at each respective user's premises can be regulated by having the controller influence a motor-controlled or thermally controlled valve that is either open or closed.
  • the temperature of the heat-carrying medium is the same at delivery to each respective user.
  • the circulation time at each respective user's premises, energy liberated at standstill, and the area of the heating surface (heated floor area) will then provide information regarding the relative consumption of each respective user. This information can be used to share the total energy cost in accordance with the actual consumption of each respective user.
  • the last mentioned method can also be used for an absolute determination of the delivered energy quantity.
  • the method can also be used to measure the temperature variation of the heat-carrying medium when it returns from the distribution system, and on the basis of circulation time and temperature variation within the time period that indicates the duration of each single energy pulse, the delivered amount of energy can be determined. If the circulation rates in the distribution system of the respective apartments are different, or vary over time, the measurement above can be supplemented by installing a liquid flow rate meter in the distribution system. Circulated quantity and corresponding liquid temperature provide further information regarding the energy consumption.
  • the installation can be divided into different zones to be controlled in different manners, independent of each other. The energy consumption is then recorded for each respective zone, and totalized.
  • the register (registers) showing the energy consumption can be read externally by having each unit (for instance apartment) connected to a readout network (data bus).

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Abstract

Selon l'invention, une quantité d'énergie est acheminée à un consommateur par l'intermédiaire d'un milieu de circulation caloporteur faiblement tempéré, de l'eau par exemple, dans une canalisation (7). Pour adapter la quantité d'énergie aux besoins du consommateur, le facteur d'utilisation pour la circulation intermittente du milieu est ajusté en fonction d'une température d'entrée déterminée et de paramètres variables mesurés dans les locaux du consommateur. Les paramètres d'intérêt peuvent être la température ambiante, la température de l'air extérieur (3), l'intensité du rayonnement solaire, la vitesse et le sens du vent. La commande d'une pompe (5) permet d'obtenir un fonctionnement intermittent.
PCT/NO2002/000369 2001-10-12 2002-10-11 Procede et dispositif permettant de mesurer, reguler et enregistrer une quantite d'energie acheminee a un consommateur lors d'une distribution d'energie WO2003038343A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02768187A EP1451505A1 (fr) 2001-10-12 2002-10-11 Procede et dispositif permettant de mesurer, reguler et enregistrer une quantite d'energie acheminee a un consommateur lors d'une distribution d'energie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20014974A NO328291B1 (no) 2001-10-12 2001-10-12 Fremgangsmate og anordning for maling, styring og registrering av tilfort energimengde ved levering av energi til en forbruker
NO20014974 2001-10-12

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WO2003038343A1 true WO2003038343A1 (fr) 2003-05-08

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2007006422A1 (fr) * 2005-07-08 2007-01-18 Testo Ag Dispositif et procede de determination de l'apport d'energie dans une piece par une source de rayonnement
WO2008039065A1 (fr) * 2006-09-29 2008-04-03 Kamstrup B.V. Dispositif, système et procédé pour le contrôle d'un système de chauffage
US20150122475A1 (en) * 2013-11-07 2015-05-07 Grundfos Holding A/S Regulating method for a heating and/or cooling system with at least one load circuit
US10488057B2 (en) 2007-11-15 2019-11-26 Uponor Innovation Ab Controlling under surface heating/cooling

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US4718478A (en) * 1984-01-13 1988-01-12 Jakob Huber Procedure for controlling a thermal installation
EP0569739A1 (fr) * 1992-05-12 1993-11-18 Landis & Gyr Technology Innovation AG Procédé et dispositif pour régler une pompe dans une installation de chauffage
EP0753707A1 (fr) * 1995-07-10 1997-01-15 Dejatech B.V. Appareil de chauffage avec circulation d'eau contrÔlée sur la base de la mesure de la chaleur nécessaire dans le circuit de chauffage
EP0937948A2 (fr) * 1998-02-20 1999-08-25 Viessmann Werke GmbH & Co. Méthode et appareil pour contrÔler une système de chauffage

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DE19507247A1 (de) * 1995-03-02 1996-09-05 Baunach Hans Georg Verfahren und Vorrichtung zur hydraulisch optimierten Regelung der Vorlauftemepratur

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Publication number Priority date Publication date Assignee Title
US4718478A (en) * 1984-01-13 1988-01-12 Jakob Huber Procedure for controlling a thermal installation
EP0569739A1 (fr) * 1992-05-12 1993-11-18 Landis & Gyr Technology Innovation AG Procédé et dispositif pour régler une pompe dans une installation de chauffage
EP0753707A1 (fr) * 1995-07-10 1997-01-15 Dejatech B.V. Appareil de chauffage avec circulation d'eau contrÔlée sur la base de la mesure de la chaleur nécessaire dans le circuit de chauffage
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007006422A1 (fr) * 2005-07-08 2007-01-18 Testo Ag Dispositif et procede de determination de l'apport d'energie dans une piece par une source de rayonnement
WO2008039065A1 (fr) * 2006-09-29 2008-04-03 Kamstrup B.V. Dispositif, système et procédé pour le contrôle d'un système de chauffage
NL1032598C2 (nl) * 2006-09-29 2009-02-25 Kamstrup B V Inrichting, systeem en werkwijze voor het besturen van een verwarmingssysteem.
US10488057B2 (en) 2007-11-15 2019-11-26 Uponor Innovation Ab Controlling under surface heating/cooling
US20150122475A1 (en) * 2013-11-07 2015-05-07 Grundfos Holding A/S Regulating method for a heating and/or cooling system with at least one load circuit
EP2871423A1 (fr) * 2013-11-07 2015-05-13 Grundfos Holding A/S Procédé de régulation pour un système de chauffage et/ou de refroidissement comprenant au moins un circuit de charge et dispositif de distribution pour un système de chauffage et/ou de refroidissement
US9851163B2 (en) 2013-11-07 2017-12-26 Grundfos Holding A/S Regulating method for a heating and/or cooling system with at least one load circuit

Also Published As

Publication number Publication date
NO20014974L (no) 2003-04-14
EP1451505A1 (fr) 2004-09-01
NO328291B1 (no) 2010-01-25
NO20014974D0 (no) 2001-10-12

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