WO2009140986A1 - Régulation de ligne de systèmes de chauffage réalisée selon les besoins - Google Patents

Régulation de ligne de systèmes de chauffage réalisée selon les besoins Download PDF

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Publication number
WO2009140986A1
WO2009140986A1 PCT/EP2008/004145 EP2008004145W WO2009140986A1 WO 2009140986 A1 WO2009140986 A1 WO 2009140986A1 EP 2008004145 W EP2008004145 W EP 2008004145W WO 2009140986 A1 WO2009140986 A1 WO 2009140986A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
heating
heater
heating water
flow temperature
Prior art date
Application number
PCT/EP2008/004145
Other languages
German (de)
English (en)
Inventor
Christian Haupt
Original Assignee
Bfw Werner Voelk Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bfw Werner Voelk Gmbh filed Critical Bfw Werner Voelk Gmbh
Priority to PCT/EP2008/004145 priority Critical patent/WO2009140986A1/fr
Publication of WO2009140986A1 publication Critical patent/WO2009140986A1/fr

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/215—Temperature of the water before heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/258—Outdoor temperature
    • 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

Definitions

  • the present invention relates to a method for controlling heating systems and in particular a string control of heating systems as a function of a determined need that currently exists for individual heating surfaces.
  • heating systems are generally regulated in response to a determined by appropriate temperature sensor outside temperature and regardless of the actual heat demand in the individual rooms.
  • This control method implies the need for an average increased supply of heat usually in the form of at least slightly excessively driven control curves for the flow temperature of the heating surfaces via individual strands supplied heating water to in the currently occurring case of need by turning one or more each attached to a radiator Sets thermostatic valves to be able to provide a sufficient amount of heat in a first approximation needs.
  • each radiator is connected to a supply and a return line and thus receives an approximately same flow temperature
  • the individual radiators are connected in series and in addition with a bypass line, so that between supply and return connection each heating surface flows a portion of the mass flow of the supplied heating water in the bypass line and a part of this mass flow through the radiator, whereby in particular the shutting off and regulating a heating surface affects the temperature of the heating water supplied to the radiator following in the row.
  • a method for controlling a heating station or transfer station in a building which has a heater with an output for supplying heating water (supply) and an input for receiving the heating water (return) and at least one Strand, which is connected at one end to the output of the heating device, for supplying at least one heating surface with the heating water.
  • the method comprises the steps: Determining a difference between a temperature of the heating water on the side of the output of the heater, flow temperature, and a temperature of the heating water on the side of the heater input, return temperature, and
  • Heating water can in the heater, z. B. in a boiler, are heated before it is fed through the output to at least one strand.
  • the term "heater” in addition to boilers, etc. also include a installed in a building feeder, for example, include a heat exchanger of local or district heating systems with system separation.
  • the heating water After passing through a heating circuit, which includes the passage through individual radiators in the rooms of the building or by bypass lines, in particular for reuse after heating, fed again.
  • the at least one strand can be a main supply line, from which the heating water is distributed to lines which feed the individual heating elements or, as in the case of the single-pipe heating system (see below), also corresponding bypass lines.
  • the size to be controlled depends on the result of the control that in the present case, a first flow temperature is set, which subsequently to a return temperature, depending on the determined difference of this flow temperature a second flow temperature is regulated, which may be different from the first.
  • the flow temperature to which the heating water is heated for example, in a boiler, as a control variable depending on, for example, by appropriate resistance temperature sensor or contact sensor, certain temperature of the heating water after passage of the heating circuit until re-entry into the heater, ie return temperature, and more precisely, depending on the difference between this temperature and the flow temperature.
  • the return temperature depends on the current use of individual radiators, a need-based regulation of the heating system for the at least one strand is thus achieved. If no radiator connected to the string is turned on (all radiator controls, eg thermostatic valves, are closed), the return temperature of the string (heating water temperature on the side of the heater inlet) will be approximately equal to the flow temperature (and thus clearly deviating from the design spread), which means that there is no current demand for heating heat and the flow temperature can be regulated down accordingly. However, if a large difference between flow temperature and return temperature determined (measured, for example), a higher control of the flow temperature can be done to meet the current heating demand on the at least one strand can.
  • the inventive method for controlling a heating system allows a demand-based setting of the flow temperature instead of a predetermined only by the outside temperature regardless of the actual use of the individual radiator flow temperature.
  • significantly excessively high driving curves which lead to an energy waste, can be avoided.
  • the superfluous and / or uncontrollable pipe heat can be controlled according to the actual needs, whereby the detection accuracy of heat cost allocators can be significantly improved.
  • the method according to the invention can be combined with the state-of-the-art control method according to the outside temperature, such that it comprises measuring a temperature outside the housing (outside temperature) and the flow temperature also on the basis of the temperature measured outside the housing is regulated.
  • the flow temperatures to be set for outdoor temperatures can be assigned to a controller of a boiler entered "outside temperature is a function of the determined difference between flow temperature and return temperature modified temperature, which may differ according to the actual heating demand in the rooms of the building described by the difference of the actually measured outside temperature.
  • the method according to the invention can therefore be realized relatively simply and inexpensively by expanding existing control systems.
  • the method according to the invention in its various developments is particularly advantageously applicable to a single-pipe heating system in which the at least one strand for supplying the at least one radiator is connected to the heating water at another end to the input of the heating device.
  • the at least one strand of heating water with flow temperature leads to individual heating surfaces (such as radiators) and a bypass line to this radiator, and he leads after flowing through the radiator or the bypass line, the heating water of the heater to the entrance of the same with return temperature.
  • the flow temperature of each strand can be determined either centrally or decentrally on the side of the output of the heating device and a return temperature characteristic of the respective strand on the side of the input of the heating device.
  • the return temperatures of different strands will thus generally be different according to the need for individual radiators.
  • the method may include determining the largest difference between the flow temperature and the return temperatures, and then may be configured to control the flow temperature based on the determined largest difference. This applies, of course, for one-pipe and two-pipe systems.
  • the strand is determined at which the largest current heating demand (demand for supplied by the heating water heat) consists.
  • the flow temperature is regulated according to this requirement, so that the necessary amount of heat is made available.
  • the method for controlling a heating system comprises the steps:
  • Providing a heating curve that assigns a standard flow temperature to a temperature measurable outside the enclosure, and wherein controlling the flow temperature comprises:
  • standard flow temperature refers to the temperature which, according to a standard method of the prior art, is assigned on the basis of a heating curve to a measured outside temperature and to which the flow temperature is regulated in the prior art.
  • the flow temperature is controlled to the standard flow temperature, which is associated with a modified outside temperature over the heating curve.
  • the modified (manipulated) temperature is limited downwards by the actual measured temperature. This can be avoided that is regulated to an unnecessarily high flow temperature according to an undesirably low changed (manipulated) "outside temperature" when one or more users open, for example, at relatively cold outside temperatures window fully open thermostatic radiator valves in the rooms with the windows open. Also, the modified "outside temperature" may be changed at most to a predetermined maximum value from the actual outside temperature in order to provide some reserve for heating in a currently occurring heating case.
  • the mass flow in each of the strands can be regulated depending on how large the respective difference between the flow temperature and the return temperature of each strand is. This further reduces energy waste.
  • the combined control of the flow temperature and the mass flow for each strand, the supply of the amount of heat can be further optimized.
  • the mass flow is not controlled below a predetermined value, so that a current change in the heat demand, ie in particular the onset of a new or intensified heating phase reliably detected and a timely adjustment of the amount of heat to be supplied in the strand can.
  • a hydraulic balancing is usually carried out, which must be carried out in Germany according to VOB / C - DIN 18380 on each heating system.
  • Hydraulic balancing can be carried out by presetting the thermostatic valves and the return screw connections on the individual radiators. Different heating strands are matched once in the prior art by regulating valves.
  • the mass flow is regulated, for example by means of actuators on such line regulating valves (see below).
  • the method according to the invention is also advantageous in that it can be used for the cost-effective and relatively easy to install modification of existing control circuits of heating systems, in particular single-pipe heating systems. Therefore, a method for retrofitting a heating system in a building is provided here, wherein the heating system has a heating device with an outlet for supplying Heating water and an inlet for receiving the heating water and at least one strand for supplying at least one heating surface with the heating water, wherein the strand is connected at one end to the output of the heater, an outdoor sensor for measuring a temperature outside the housing and a standard controller, adapted to control the heater based on the measured temperature outside the housing, comprising the steps of:
  • Installing a measuring device configured to measure a temperature of the heating water on the side of the heater input, return temperature, and / or a difference between a temperature of the heating water on the side of the heater output, flow temperature, and a temperature of the heating water on the side of the input of the heater, return temperature, to determine, and
  • the difference can be determined by the further controller on the basis of the return temperature measured by the measuring device according to an alternative.
  • the heating system may in this case be a one-pipe system in which a plurality of strands is connected to the output of the heating device, so that they heating water is supplied to the flow temperature, and the plurality of strands is connected to the input of the heater, and wherein the measuring device is designed to measure temperatures of the heating water in at least a part of the plurality of strands on the side of the input of the heating device, return temperatures, and / or to determine differences between the flow temperature and return temperatures, and
  • the further controller installed between the outdoor sensor and the standard controller is adapted to modify the value of the measured temperature outside the housing and to input the modified temperature value to the standard controller based on the differences between the flow temperature and the return temperatures ,
  • the heating system may include riser valves, or other throttling devices at the ends of strands or heating circuits on the side of the output of the heater, and the retrofit process may further comprise
  • the strand control mechanisms are adapted to cause the actuators, in response to signals from the further regulator, to actuate the strand regulating valves.
  • a heating system which includes
  • a heating device with an outlet for supplying heating water and an inlet for receiving the heating water and at least one strand which is connected to a nem end connected to the output of the heater, for supplying at least one heating surface with the heating water;
  • a measuring device configured to measure a temperature of the heating water on the side of the input of the heater, return temperature, and / or a difference between a temperature of the heating water on the side of the output of the heater, flow temperature, and a temperature of the heating water the side of the input of the heater, return temperature to determine;
  • control device which is connected to the heating device and the measuring device and which is adapted to regulate the flow temperature provided by the heating device on the basis of the difference between the flow temperature and the return temperature measured by the measuring device.
  • the heating system may be a single-pipe heating system comprising
  • the measuring device is adapted to measure return temperatures in at least a part of the plurality of strands on the side of the input of the heater and / or differences between the flow temperature and temperatures of the heating water in at least a part of the plurality of strands on the side of the input of Heating device, return temperatures, to determine, and in the
  • control means is adapted to control the flow temperature based on the differences between the flow temperature and the return temperatures.
  • the heating system can comprise an outside sensor for measuring a temperature outside the housing, and the regulating device can be equipped to this end. forms to regulate the flow temperature on the basis of the temperature measured by the outdoor sensor outside the housing.
  • the heating system includes
  • Strand regulating valves at the ends of strands or heating circuits on the side of the outlet of the heating device;
  • Actuators connected to the balancing valves for actuating the same;
  • Strand control mechanisms connected to the actuators and the control means and arranged to cause the actuators to actuate the rail regulating valves in response to signals from the control means.
  • the regulating device may be a main regulator, and the strand regulating mechanisms may be subregulators, one for each strand.
  • FIG. 1 is a flowchart showing steps of an exemplary embodiment of the method according to the invention.
  • Figure 2 illustrates the operation of a main regulator and n sub-regulators adapted to control a n-string heating system according to an example of the present invention.
  • the temperature outside the building is measured 1 and the flow temperature of the heating water is adjusted according to the measured outside temperature, for example by means of previously prepared and provided heating curves 2.
  • a boiler is regulated to treat the heating water with the flow temperature, which is then fed to a strand for distribution to radiators 3. So far, the control method is well known in the prior art.
  • the return temperature of the heating water after this has, for example, partially passed one or more heating elements and partly a bypass line and has flowed back to the combustion vessel is measured 4. Then, the temperature difference of the heating surfaces via the strand supplied water and the back-flowing water (ie, supply temperature - return temperature) determines 5, and it is checked whether this difference exceeds a predetermined limit or not. If the difference is below the barrier, in the exemplary case heating water is still supplied with the unchanged flow temperature. The barrier may in turn depend on the outside temperature.
  • a controller lowers the measured outside temperature 6 and adjusts the flow temperature based on the above-mentioned heating curve according to the lowered (manipulated) outside temperature Flow temperature is delivered. If the difference is smaller than another predetermined threshold, it may be provided that the outside temperature is increased, whereby a lower flow temperature is set. In this case, therefore, as shown in Figure 1, the flow temperature is not maintained. Such a case occurs, for example, when at some time the control devices (eg thermostatic valves) of the heating surfaces of all strands are turned off. In this case, the difference between the flow and return temperatures for these beaches is ge ever smaller, and it can be the flow temperature, after only a small difference of these temperatures was found to be lowered.
  • the control devices eg thermostatic valves
  • the modification of the outside temperature depends on the magnitude of the temperature difference between flow and return.
  • the change in the outside temperature depending on this difference can be easily determined empirically so that a desired control of the climate in the rooms of the building or a desired saving of the heating energy is achieved.
  • numerical simulations of the control of the heating system in question may be designed and carried out by a person skilled in the art.
  • the effects of a certain modification of the outside temperature depending on certain differences between the flow and return temperatures can be tested and analyzed.
  • a savings potential for a monotube heating plant controlled according to the invention of up to 20% of the amount of heat compared with a conventionally controlled plant could be demonstrated in detailed simulation calculations. Analogously, this also applies to horizontal single-pipe heating, e.g. with flat distribution.
  • FIG. 1 shows a simplified illustration of the control principle in that, in general, the heating system to be controlled will comprise more than one strand.
  • the modification of the measured outside temperature is carried out in accordance with the determined largest difference between the return temperatures of the individual strands and the flow temperature in order to meet the currently largest requirement of a strand.
  • heating water can be supplied through a string directly superimposed rooms.
  • one strand supplies rooms that are typically used as living rooms, another, for example, rooms that are typically used as bedrooms, etc.
  • a control of the flow temperature advantageously on the basis of the differences of averaged over a plurality of time intervals flow and return temperatures to avoid unwanted swinging of the control loop by individual outliers.
  • the flow temperature in predetermined Steps are set over a certain period of time to the value assigned to the modified outside temperature in the heating curve.
  • Figure 2 shows an example of the realization of the here disclosed control of a heating system using a main controller and n sub-regulators according to n strands, where the heating water is supplied to the flow temperature.
  • the sub-controllers and the main controller communicate data via data lines or by radio.
  • the main controller is connected to a boiler (not shown) and controls the flow temperature S y1 of the heating water provided by the boiler.
  • Each sub-controller receives from the main controller, the central or decentralized predetermined flow temperature Q y1 and entered by a sensor, the return temperature S ⁇ of its associated strand as input data.
  • the main controller receives the outside temperature 3 ⁇ U measured by an outside sensor and data, in particular the return temperature 3 RL , from the sub-controllers. Based on the difference between flow and return temperatures determined by the sub-controllers or the main controller, the main controller modifies the outside temperature so that the flow temperature S y1 is set using a heating curve based on the modified outside temperature 9 AUman .
  • each sub-controller transmits a change request for the flow temperature according to the heat demand determined via the difference between the flow temperature S y1 and the return temperature S RL of the line assigned to it.
  • Main controller receives all change requests (which may include the trivial case that no change is desired) and evaluates the change requests for priority.
  • the request of the string with the highest heat demand results in a change of the flow temperature S y1 of the heating water supplied from a boiler on instruction of the main controller.
  • the n sub-controllers can, however, their assigned Regulate cords via throttle valves.
  • the sub-regulators can thus regulate the mass flow through their respective strands by sending corresponding valve lift signals ⁇ Hi,..., ⁇ H n to actuators of the throttle valves, whereby the amount of heat supplied to the individual strands can be optimized according to current needs.

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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)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

L'invention concerne un procédé de régulation d'un système de chauffage dans un bâtiment, comportant un dispositif de chauffage présentant une sortie pour l'amenée d'eau de chauffage, une entrée pour la réception de l'eau de chauffage, et au moins une ligne reliée sur une extrémité à la sortie du dispositif de chauffage, destinée à l'alimentation d'au moins une surface de chauffage en eau de chauffage. Le procédé comporte les étapes suivantes: détermination d'une différence entre la température de l'eau de chauffage sur le côté de sortie du dispositif de chauffage (température de la canalisation montante), et la température de l'eau de chauffage sur le côté d'entrée du dispositif de chauffage (température de canalisation de retour); et régulation de la température de la canalisation montante sur la base de la différence de température déterminée.
PCT/EP2008/004145 2008-05-23 2008-05-23 Régulation de ligne de systèmes de chauffage réalisée selon les besoins WO2009140986A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/004145 WO2009140986A1 (fr) 2008-05-23 2008-05-23 Régulation de ligne de systèmes de chauffage réalisée selon les besoins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/004145 WO2009140986A1 (fr) 2008-05-23 2008-05-23 Régulation de ligne de systèmes de chauffage réalisée selon les besoins

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WO2009140986A1 true WO2009140986A1 (fr) 2009-11-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3220066A1 (fr) * 2016-03-14 2017-09-20 Techem Energy Services GmbH Méthode et controleur pour augmenter le taux d'utilisation d'un générateur de chaleur dans un système de chauffage
CN112669529A (zh) * 2020-12-04 2021-04-16 陕西启迪瑞行清洁能源研究院有限公司 一种多梯级品位热能计费装置
DE102022126018A1 (de) 2022-10-07 2024-04-18 E.On Se Kontrollverfahren, Kontrollsystem, Computerprogrammprodukt und computerlesbares Medium
DE102022126020A1 (de) 2022-10-07 2024-04-18 E.On Se Kontrollsystem und Heizsystem

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948797A1 (de) * 1979-12-04 1981-06-11 Friedhelm 7406 Mössingen Salzmann Regelkreis fuer eine heizungsanlage
DE3241800A1 (de) * 1982-11-11 1984-05-17 Friedhelm 7406 Mössingen Salzmann Regeleinrichtung fuer eine heizungsanlage
DE3505600A1 (de) * 1985-02-18 1986-08-21 Happel GmbH & Co, 4690 Herne Verfahren und vorrichtung zur regelung der temperatur in zu temperierenden raeumen
DE9405531U1 (de) * 1994-03-31 1994-06-01 Windhager Zentralheizung Gmbh Regeleinrichtung für Warmwasser-Zentralheizungsanlagen
DE10114822A1 (de) * 2001-03-26 2002-10-10 Siemens Building Tech Ag Verfahren und Vorrichtung zum Regeln oder Steuern der Energiezufuhr zu Heizkörpern in einem Heizsystem und Verwendung einer Pumpe zu diesem Zweck

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948797A1 (de) * 1979-12-04 1981-06-11 Friedhelm 7406 Mössingen Salzmann Regelkreis fuer eine heizungsanlage
DE3241800A1 (de) * 1982-11-11 1984-05-17 Friedhelm 7406 Mössingen Salzmann Regeleinrichtung fuer eine heizungsanlage
DE3505600A1 (de) * 1985-02-18 1986-08-21 Happel GmbH & Co, 4690 Herne Verfahren und vorrichtung zur regelung der temperatur in zu temperierenden raeumen
DE9405531U1 (de) * 1994-03-31 1994-06-01 Windhager Zentralheizung Gmbh Regeleinrichtung für Warmwasser-Zentralheizungsanlagen
DE10114822A1 (de) * 2001-03-26 2002-10-10 Siemens Building Tech Ag Verfahren und Vorrichtung zum Regeln oder Steuern der Energiezufuhr zu Heizkörpern in einem Heizsystem und Verwendung einer Pumpe zu diesem Zweck

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3220066A1 (fr) * 2016-03-14 2017-09-20 Techem Energy Services GmbH Méthode et controleur pour augmenter le taux d'utilisation d'un générateur de chaleur dans un système de chauffage
CN112669529A (zh) * 2020-12-04 2021-04-16 陕西启迪瑞行清洁能源研究院有限公司 一种多梯级品位热能计费装置
DE102022126018A1 (de) 2022-10-07 2024-04-18 E.On Se Kontrollverfahren, Kontrollsystem, Computerprogrammprodukt und computerlesbares Medium
DE102022126020A1 (de) 2022-10-07 2024-04-18 E.On Se Kontrollsystem und Heizsystem

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