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WO2003023288A1 - Installation de chauffage central - Google Patents

Installation de chauffage central Download PDF

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Publication number
WO2003023288A1
WO2003023288A1 PCT/DK2002/000562 DK0200562W WO03023288A1 WO 2003023288 A1 WO2003023288 A1 WO 2003023288A1 DK 0200562 W DK0200562 W DK 0200562W WO 03023288 A1 WO03023288 A1 WO 03023288A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
primary
circulation pump
heat
central heating
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DK2002/000562
Other languages
German (de)
English (en)
Inventor
Poul Erik Hansen
Jan Eric Thorsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of WO2003023288A1 publication Critical patent/WO2003023288A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1018—Radiator valves
    • 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
    • F24D10/00—District heating systems
    • F24D10/003—Domestic delivery stations having a heat exchanger
    • 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
    • F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
    • 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
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to a central heating system arranged in separate rooms radiators in a heating circuit having a heat source with controllable heat output and a circulation pump, wherein each of the radiators comprise a valve which in depen- • ⁇ dependence adjustable from the room temperature by a temperature controller to keep the room temperature at an adjustable setpoint.
  • the flow temperature is usually regulated according to a predetermined function as a function of the outside temperature.
  • the heat requirement does not only depend on the outside temperature, but also on the setting of the setpoints on the temperature controllers. This can result in the current flow temperature being higher or lower than required. If the flow temperature is too high, a higher heat loss can result. Conversely, if the flow temperature is too low, the desired room temperature could not be reached.
  • the invention has for its object to provide a central heating system of the type mentioned, in which the heat losses are kept low with little effort and still maintain the desired room temperatures.
  • this object is achieved in that the heat output of the heat source can be regulated in such a way that the operating point of the circulating pump assumes a position on its operating characteristic in which the return temperature of the system is minimal while maintaining the set room temperatures and taking into account the thermal load on the system ,
  • the operating point of the circulation pump can be changed automatically as a function of the thermal load on the system.
  • the heat source preferably contains a heat exchanger, the primary side of which is connected to a district heating plant.
  • a heat exchanger the primary side of which is connected to a district heating plant.
  • only the volume flow on the primary side needs to be regulated as a function of a few measurement variables so that the operating point of the Circulation pump corresponds to the current heat load.
  • the flow temperature in the secondary circuit of the heat exchanger can be raised automatically by increasing the volume flow in the primary circuit of the heat exchanger and then gradually reduced to a value during a measuring cycle which the heat output is lower than the thermal load of the system, and that during each measurement cycle, measured values of the heat output and the pressure difference at the circulating pump can be stored at the lowest measured value of the return temperature and during operation of the system between the measurement cycles, the secondary supply temperature by means of appropriate readjustment of the primary-side volume flow at the instantaneous primary-side temperature, the pressure difference associated with the instantaneous heat output at the circulating pump by interpolation between those stored adjacent to the instantaneous heat output heat output measured values is adjustable.
  • the central heating system can have a volume flow regulator, through which the primary-side volume flow can be regulated via a control valve in the primary circuit of the heat exchanger, depending on the primary-side return temperature, the secondary-side supply and return temperature and the pressure difference at the circulating pump and their speed.
  • FIG. 1 is a block diagram of the embodiment of the invention central heating system
  • FIG. 2 shows the dependency of the pressure difference on a circulation pump in the heating circuit of the central heating system on the volume flow at constant speed of the circulation pump, i.e. the operating characteristic of the circulation pump, and two different operating characteristics of the remaining parts of the heating circuit through which the fluid conveyed by the circulation pump flows, i.e. the rest of the pipeline network without the circulation pump, for two different operating points of the circulation pump,
  • 3 shows characteristic curves similar to that of FIG. 2, but for speeds of the circulating pump which are constantly regulated to different setpoints, with a straight control characteristic of the circulating pump at different speeds
  • 4a shows the time course of the flow and return temperatures T 3 , T x , T 2 , the heat output Q of the heat source and the pressure difference ⁇ P at the circulation pump as a function of the outside temperature T A ,
  • Central heating system determined measured values of the pressure difference at the circulation pump and the heat output of the heat source with linear interpolated intermediate values.
  • a heat source in the form of a heat exchanger 1 is supplied with warm water from a primary heating system via a flow line 2 and a return line 3 from a district heating plant (not shown).
  • the primary return temperature Ti is measured by means of a temperature sensor 4 and fed to a volume flow controller 5.
  • a control valve S which is controlled by the volume flow controller 5 via a servomotor 6.
  • the secondary heating circuit of the heat exchanger Schers 1 are parallel between a flow line 7 and a return line 8 several radiators 9 in series, each with a valve 10.
  • One or more radiators 9 are each arranged in separate rooms to be heated.
  • the valves 10 are each controlled by a temperature controller 11 which adjusts the degree of opening of the associated valve 10 as a function of the room temperature and a temperature setpoint set on the temperature controller 11 so that the room temperature remains largely constant.
  • a circulation pump 12 In the return line 8 of the secondary circuit of the heat exchanger 1 there is a circulation pump 12, the speed of which is kept constant at an adjustable setpoint by an internal speed controller.
  • a measure of the pressure difference ⁇ P at the circulation pump and the volume flow V is supplied to the volume flow controller 5 via a data bus shown in broken lines.
  • the return temperature T 2 in the return line 8 is measured by means of a temperature sensor 13 and the flow temperature T 3 in the supply line 7 by means of a temperature sensor 14.
  • the measured values of the return temperature T 2 and the supply temperature T 3 are also fed to the volume flow controller 5 via lines shown in broken lines.
  • Heat exchanger is such that the return temperature T x and thus also the return temperature T 2 of the central heating system is minimal while maintaining the set room temperatures and taking into account the thermal load on the system. Er and Er and p change little with temperature. If V and T 3 -T 2 are measured, the energy provided by the heating systems can be calculated. C v and p change little with temperature. If V and T 3 -T 2 are measured, the heating system's energy output can be calculated. In this way, heat losses are kept as low as possible and the heat efficiency of the central heating system, in particular the district heating plant, is kept high.
  • the operating point of the circulating pump 12 shifts on the circulating pump operating characteristic shown in FIG. 2 for a constant pump speed depending on the respectively set mean opening degree of the valves 10 of the heating elements 9 between the working points in the intersection points of the circulating pump operating characteristic and the pipe network characteristic curve, which comprise the pressure drop at the pipes 7, 8, radiators 9 and valves 10 in the secondary-side heating circuit of the heat exchanger 1 as a function of the volume flow V, in accordance with the respective degree of opening of the radiator valves 10 according to FIG. 2.
  • the characteristic curves according to FIG. 3 then apply to different constant speeds, the operating points lying on the control curve of the circulating pump corresponding to the respective opening degree of the radiator valves.
  • 4a to 4c illustrate the dependency of the respective temperatures t lr t 2 and t 3 , the thermal output Q of the heat source and the pressure difference ⁇ P at the circulation pump 12 as a function of a fluctuating outside temperature T a (lower curve in FIG 4a).
  • 4b and 4c only indicate qualitative profiles of the curves. This also applies to FIGS. 5b and 5c.
  • the central heating system is first automatically calibrated by the volume flow controller 5 according to FIGS. 5 and 6 for different heat loads or outside temperatures at regular intervals of at least a few days.
  • a measuring cycle extending over a few hours proceeds according to FIG. 5a as follows: At the beginning, the flow temperature T 3 in the secondary heating circuit is greatly increased by increasing the volume flow in the primary circuit of the heat exchanger 1 by opening the control valve S further. Thereafter, the flow temperature T 3 is always constant after the temperatures T X / T 2 and T 3 and the operating point of the pump
  • the measured values of the thermal output Q and the pressure differences ⁇ P at the circulating pump 12 determined in each measurement cycle in a corresponding minimum of the temperatures Ti and T 2 in the volume flow controller 5 are stored in the volume flow controller 5.
  • the secondary-side flow temperature T 3 is then, by corresponding readjustment of the primary-side volume flow V at the instantaneous primary-side return temperature T x , the pressure difference ⁇ P associated with the instantaneous heat output Q at the circulating pump by linear interpolation between the current heat output adjacent stored heat output measured values, which are indicated in FIG. 6 by three measurement points each determined in one of three measurement cycles.

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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 une installation de chauffage central comprenant des radiateurs (9) placés dans des pièces distinctes dans un circuit de chauffage qui présente une source de chaleur à puissance calorifique réglable ainsi qu'une pompe de recirculation (12). Chaque radiateur (9) présente une vanne (10) qui est réglage en fonction de la température ambiante au moyen d'un thermostat (11) afin de maintenir la température ambiante à une valeur de consigne réglable. Normalement, la température de départ est réglée selon une fonction prédéfinie en fonction de la température extérieure et du réglage du thermostat concerné. Cela nécessite la mesure des températures à de nombreux endroits et exige un grand nombre de capteurs et de dispositifs de transmission. L'invention vise à réduire au minimum les déperditions de chaleur, à moindre coût et tout en respectant les températures ambiantes désirées. A cet effet, la puissance calorifique de la source de chaleur peut être réglée de sorte que le point de fonctionnement de la pompe de recirculation (12) adopte, sur sa courbe caractéristique de fonctionnement, une position dans laquelle la température de retour (T1, T2) de l'installation est au minimum tout en maintenant les températures ambiantes réglées et en tenant compte de la charge thermique de l'installation.
PCT/DK2002/000562 2001-09-11 2002-08-28 Installation de chauffage central Ceased WO2003023288A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10144595A DE10144595B4 (de) 2001-09-11 2001-09-11 Zentralheizungsanlage
DE10144595.4 2001-09-11

Publications (1)

Publication Number Publication Date
WO2003023288A1 true WO2003023288A1 (fr) 2003-03-20

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Application Number Title Priority Date Filing Date
PCT/DK2002/000562 Ceased WO2003023288A1 (fr) 2001-09-11 2002-08-28 Installation de chauffage central

Country Status (2)

Country Link
DE (1) DE10144595B4 (fr)
WO (1) WO2003023288A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102902235A (zh) * 2011-07-27 2013-01-30 叶晓朋 集中供热自动控制及远程网络监控系统
CN103453579A (zh) * 2013-09-18 2013-12-18 天津大学 一种用于集中供热系统水力解耦罐
GB2528314A (en) * 2014-07-17 2016-01-20 Sav United Kingdom Ltd A heating supply arrangement
CN109373441A (zh) * 2018-12-20 2019-02-22 普瑞森能源科技（北京）股份有限公司 热网能源管理系统及其处理方法
CN110736129A (zh) * 2019-10-24 2020-01-31 北京金房暖通节能技术股份有限公司 一种城市供热管网智能平衡调控系统及方法
WO2020165037A1 (fr) * 2019-02-15 2020-08-20 KSB SE & Co. KGaA Procédé pour réguler une pompe de circulation
CN111578371A (zh) * 2020-05-22 2020-08-25 浙江大学 一种数据驱动的城市集中供热系统精准调控方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011822A1 (de) * 2010-12-29 2012-07-05 Volkswagen Ag Verfahren und Vorrichtung zum Temperieren eines strömenden Fluids auf eine vorgegebene Solltemperatur
EP2863133B1 (fr) * 2013-10-15 2017-07-19 Grundfos Holding A/S Procédé pour régler la température de consigne d'un milieu de transfert de chaleur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091869A1 (fr) * 1982-04-09 1983-10-19 POMPES SALMSON Société Anonyme à directoire dite: Ensemble de pompage, tel qu'un circulateur pour installation de chauffage central, à caractéristique hydraulique prédéterminée
US4433810A (en) * 1977-07-29 1984-02-28 Simon Gottlieb Hot water heating system
SE444065B (sv) * 1984-09-20 1986-03-17 Olsson & Nilsson Energikonsult Effektuttagsbegrensning for abonnentcentral vid fjerrvermesystem
EP0444269A2 (fr) * 1990-02-28 1991-09-04 Ewald Hennel Procédé de régulation de la charge d'une pompe
EP1148302A2 (fr) * 2000-04-19 2001-10-24 Technische Alternative elektronische Steuerungsgerätegesellschaft m.b.H. Procédé de réglage de la temperature de la prélèvement de l'eau sanitaire

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT273U3 (de) * 1994-10-25 1995-09-25 Landis & Gry Tech Innovat Ag Verfahren und vorrichtung zum steuern eines wärmeaustauschers
DE19756104C5 (de) * 1997-12-17 2014-09-11 Ista International Gmbh Verfahren zur Regelung der Vorlauftemperatur einer Zentralheizungsanlage bzw. eines Heizkreises

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4433810A (en) * 1977-07-29 1984-02-28 Simon Gottlieb Hot water heating system
EP0091869A1 (fr) * 1982-04-09 1983-10-19 POMPES SALMSON Société Anonyme à directoire dite: Ensemble de pompage, tel qu'un circulateur pour installation de chauffage central, à caractéristique hydraulique prédéterminée
SE444065B (sv) * 1984-09-20 1986-03-17 Olsson & Nilsson Energikonsult Effektuttagsbegrensning for abonnentcentral vid fjerrvermesystem
EP0444269A2 (fr) * 1990-02-28 1991-09-04 Ewald Hennel Procédé de régulation de la charge d'une pompe
EP1148302A2 (fr) * 2000-04-19 2001-10-24 Technische Alternative elektronische Steuerungsgerätegesellschaft m.b.H. Procédé de réglage de la temperature de la prélèvement de l'eau sanitaire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102902235A (zh) * 2011-07-27 2013-01-30 叶晓朋 集中供热自动控制及远程网络监控系统
CN103453579A (zh) * 2013-09-18 2013-12-18 天津大学 一种用于集中供热系统水力解耦罐
GB2528314A (en) * 2014-07-17 2016-01-20 Sav United Kingdom Ltd A heating supply arrangement
CN109373441A (zh) * 2018-12-20 2019-02-22 普瑞森能源科技（北京）股份有限公司 热网能源管理系统及其处理方法
WO2020165037A1 (fr) * 2019-02-15 2020-08-20 KSB SE & Co. KGaA Procédé pour réguler une pompe de circulation
CN110736129A (zh) * 2019-10-24 2020-01-31 北京金房暖通节能技术股份有限公司 一种城市供热管网智能平衡调控系统及方法
CN110736129B (zh) * 2019-10-24 2021-06-18 北京金房暖通节能技术股份有限公司 一种城市供热管网智能平衡调控系统及方法
CN111578371A (zh) * 2020-05-22 2020-08-25 浙江大学 一种数据驱动的城市集中供热系统精准调控方法

Also Published As

Publication number Publication date
DE10144595A1 (de) 2003-04-03
DE10144595B4 (de) 2004-03-04

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