DE2940790C1 - Process for energy-saving temperature control of heat supply systems - Google Patents

Process for energy-saving temperature control of heat supply systems

Info

Publication number
DE2940790C1
DE2940790C1 DE2940790A DE2940790A DE2940790C1 DE 2940790 C1 DE2940790 C1 DE 2940790C1 DE 2940790 A DE2940790 A DE 2940790A DE 2940790 A DE2940790 A DE 2940790A DE 2940790 C1 DE2940790 C1 DE 2940790C1
Authority
DE
Germany
Prior art keywords
heat
flow
temperature
supply systems
heat supply
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.)
Expired
Application number
DE2940790A
Other languages
German (de)
Inventor
Erich Ing.(grad.) 2056 Glinde Koops
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.)
Imtech Deutschland GmbH and Co KG
Original Assignee
Rud Otto Meyer GmbH and Co KG
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 Rud Otto Meyer GmbH and Co KG filed Critical Rud Otto Meyer GmbH and Co KG
Priority to DE2940790A priority Critical patent/DE2940790C1/en
Application granted granted Critical
Publication of DE2940790C1 publication Critical patent/DE2940790C1/en
Expired 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
    • F24D19/1024—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve
    • 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
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
    • G05D23/1934—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces each space being provided with one sensor acting on one or more control means
    • 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

Landscapes

  • 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)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Flow Control (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Regeln der Vorlauftemperatur bei Wärmeversorgungsanlagen, bei denen ein Wärmeträgerstrom durch Wärmeverbraucher geleitet wird und die Größe des Wärmeträgerstromes an den Wärmebedarf der Wärmeverbraucher angepaßt wird.The invention relates to a method for regulating the flow temperature in heat supply systems where a heat carrier flow is passed through heat consumers and the size of the heat carrier flow is adapted to the heat demand of the heat consumer.

Die Wärmeverbraucher von Wärmeversorgungsanlagen werden meist durch Drosseln des Wärmeträgerstromes an den jeweiligen Wärmebedarf angepaßt. Die Wärmeverluste des Verteilungsnetzes sind maßgeblich von der Vorlauf- und Rücklauftemperatur abhängig, wobei die Vorlauftemperatur meist abhängig von der Außentemperatur ist.The heat consumers of heat supply systems are mostly reduced by throttling the heat carrier flow adapted to the respective heat demand. The heat losses of the distribution network are decisive depends on the flow and return temperature, whereby the flow temperature mostly depends on the Outside temperature is.

Sind bei solchen Wärmeversorgungsanlagen nur wenige Wärmeverbraucher im Betrieb, so sinkt zwar die Wärmeleistung, nicht aber die Vorlauftemperatur, so daß der Anteil der Wärmeverluste im Verteilernetz am gesamten Energieverbrauch ansteigt.If there are only a few heat consumers in operation in such heat supply systems, the Heat output, but not the flow temperature, so that the proportion of heat losses in the distribution network on total energy consumption increases.

Die Aufgabe der Erfindung ist es daher, die Vorlauftemperatur so niedrig wie jeweils möglich zu regeln, um Energie einzusparen. Der Betrieb der Wärmeverbraucher darf dadurch nicht beeinträchtigt werden.The object of the invention is therefore to keep the flow temperature as low as possible regulate to save energy. The operation of the heat consumers must not be impaired as a result will.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Vorlauftemperatur in Abhängigkeit vom Wärmeträgerstrom so geregelt wird, daß bei zunehmendem Wärmeträgerstrom die Vorlauftemperatur erhöht und bei sinkendem Wärmeträgerstrom gesenkt wird.This object is achieved according to the invention in that the flow temperature as a function of Heat transfer medium flow is regulated so that the flow temperature increases as the heat transfer medium flow increases and is reduced when the heat transfer medium flow decreases.

Je nach der Art der Wärmeerzeugung wird entweder die Vorlauftemperatur am Wärmeerzeuger oder die durch Rücklaufbeimischung nachgeregelte Vorlauftemperatur zwischen dem Sollwert der höchsten Wärmeleistung und dem für die Verbraucher niedrigstmöglichen Wert selbsttätig geregelt. Als Regelgröße dient dabei der Wärmeträgerstrom. Bei Drosselung an einem Wärmeverbraucher und bei gleichbleibender Drehzahl der Umwälzpumpe verringert sich der Wärmeträgerstrom in der Hauptleitung. Nach dem Verfahren gemäß der Erfindung wird die Vorlauftemperatur in diesem Fall herabgeregelt. Demzufolge wird der Strömungsverlust durch die Drosselung verringert und ein neuer Beharrungszustand bei geringerem Temperaturniveau stellt sich ein. Umgekehrt wird bei größerem Wärmeträgerstrom die Vorlauftemperatur erhöht. Als Meßgeräte werden an sich bekannte Volumenstrommeßgeräte oder Differenzdruckmeßgeräte verwendet. Bei üblichen Kreiselpumpen wird durch Drosseln neben dem Volumstrom auch der Förderdruck verändert. Dieses jedoch so geringfügig, daß die Druckänderung als Regelgröße weniger gut geeignet ist.
Die Vorteile der Neuerung liegen in der erheblichen Energieeinsparung durch Senkung der Verteilerverluste. Der Kostenaufwand ist selbst bei der Nachrüstung in bestehenden Anlagen gering.Depending on the type of heat generation, either the flow temperature at the heat generator or the flow temperature adjusted by adding the return flow is automatically regulated between the setpoint of the highest heat output and the lowest possible value for the consumer. The heat transfer medium flow serves as the control variable. When throttling at a heat consumer and with the circulation pump running at the same speed, the heat transfer medium flow in the main line is reduced. According to the method according to the invention, the flow temperature is regulated down in this case. As a result, the flow loss is reduced by the throttling and a new steady state occurs at a lower temperature level. Conversely, if the heat transfer medium flow is larger, the flow temperature is increased. Volume flow meters or differential pressure meters known per se are used as measuring devices. In conventional centrifugal pumps, throttles change both the volume flow and the delivery pressure. However, this is so slight that the pressure change is less suitable as a controlled variable.
The advantages of the innovation are the considerable energy savings by reducing distribution losses. Even when retrofitting existing systems, the costs are low.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Sie zeigt eine Wärmeversorgungsanlage, in der der Wärmeträger durch eine Umwälzpumpe 1 über Vorlaufleitungen 2 Wärmeverbrauchern 3 zugeführt wird und über Rücklaufleitungen 4 zurück zum Wärmeerzeuger 5 zur Aufheizung bzw. zum Regelventil 7 zur Temperaturregelung durch Beimischung. Der Wärmeträgerstrom wird durch ein Volumenstrom-Meßgerät 6 erfaßt. Bei Abweichung vom Sollwert wird das Regelventil 7 selbsttätig nachgestellt, so daß eine lineare Abhängigkeit von Wärmeträgerstrom und Vorlauftemperatur hergestellt wird. Die höchste Vorlauftemperatur wird durch den Temperaturwächter 10, die niedrigste erforderliche durch den Temperaturwächter 9 begrenzt. Darüber hinaus wird die Rücklauftemperatur durch einen Temperaturfühler 8 kontrolliert. It shows a heat supply system in which the heat transfer medium is passed through a circulation pump 1 Flow lines 2 heat consumers 3 is supplied and via return lines 4 back to Heat generator 5 for heating or to the control valve 7 for temperature control by admixing. Of the The heat transfer medium flow is recorded by a volume flow measuring device 6. If there is a deviation from the target value, the control valve 7 automatically readjusted, so that a linear dependence of the heat carrier flow and Flow temperature is established. The highest flow temperature is set by the temperature monitor 10, the lowest required is limited by the temperature monitor 9. In addition, the return temperature controlled by a temperature sensor 8.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zum Regeln der Vorlauftemperatur bei Wärmeversorgungsanlagen, bei denen ein Wärmeträgerstrom durch Wärmeverbraucher geleitet wird und die Größe des Wärmeträgerstromes an den Wärmebedarf der Wärmeverbraucher angepaßt wird, dadurch gekennzeichnet, daß die Vorlauftemperatur in Abhängigkeit vom Wärmeträgerstrom so geregelt wird, daß bei zunehmendem Wärmeträgerstrom die Vorlauftemperatur erhöht und bei sinkendem Wärmeträgerstrom gesenkt wird.1. Procedure for regulating the flow temperature in heat supply systems in which a Heat carrier flow is passed through heat consumers and the size of the heat carrier flow the heat demand of the heat consumer is adapted, characterized in that the The flow temperature is regulated as a function of the heat transfer medium flow so that with increasing Heat carrier flow increases the flow temperature and is lowered when the heat carrier flow decreases. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Regelimpuls für die Vorlauftemperaturregelung durch ein Volumenstrommeßgerät erzeugt wird.2. The method according to claim 1, characterized in that the control pulse for the flow temperature control is generated by a volume flow meter.
DE2940790A 1979-10-09 1979-10-09 Process for energy-saving temperature control of heat supply systems Expired DE2940790C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2940790A DE2940790C1 (en) 1979-10-09 1979-10-09 Process for energy-saving temperature control of heat supply systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2940790A DE2940790C1 (en) 1979-10-09 1979-10-09 Process for energy-saving temperature control of heat supply systems

Publications (1)

Publication Number Publication Date
DE2940790C1 true DE2940790C1 (en) 1982-03-18

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Application Number Title Priority Date Filing Date
DE2940790A Expired DE2940790C1 (en) 1979-10-09 1979-10-09 Process for energy-saving temperature control of heat supply systems

Country Status (1)

Country Link
DE (1) DE2940790C1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528155A1 (en) * 1982-06-07 1983-12-09 Gras Robert Water temp. regulator for central heating system - uses temp. transducers giving both controlled and on-off opening of two series valves to provide flow regulation
NL8300226A (en) * 1983-01-21 1984-08-16 Agpo Enertec B V District heating temperature control - has capillary thermostat connected to branch line and inlet
DE3505603A1 (en) * 1985-02-18 1986-08-21 Happel GmbH & Co, 4690 Herne Process and apparatus for regulating the temperature in rooms to be temperature-controlled
EP0195255A2 (en) * 1985-02-18 1986-09-24 HAPPEL GmbH & Co. Method and apparatus for space temperature regulation
EP2863134A1 (en) * 2013-10-15 2015-04-22 Grundfos Holding A/S Method for adjusting a heating curve
EP3779286A1 (en) * 2019-08-12 2021-02-17 Huu-Thoi Le Method for operating a heating system
DE102019005722A1 (en) * 2019-08-12 2021-02-18 Huu-Thoi Le Procedure for operating a heating system
IT202100025670A1 (en) * 2021-10-07 2023-04-07 Accademia Europea Bolzano Eurac Res REGULATION SYSTEM FOR A THERMO-HYDRAULIC CIRCUIT AND CONTROL METHOD

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1579986A1 (en) * 1966-02-17 1970-09-24 Ondal Gmbh Control procedures, especially for heating systems, and means for its implementation
DE1928575B2 (en) * 1968-06-15 1971-03-11 INDEPENDENT CONTROL DEVICE FOR A PUMP COLLECTIVE HEATING SYSTEM
DE2363231A1 (en) * 1972-12-20 1974-07-18 Pont A Mousson CENTRAL HEATING SYSTEM WITH THERMAL CONTROL
DE2452515A1 (en) * 1974-11-06 1976-05-13 Burger Eisenwerke Ag Circulation pump control in heating systems - has pump switched on and off by two-way thermostat dependent on heat load
DE2714511B1 (en) * 1977-04-01 1978-02-02 Danfoss As Device for regulating the flow temperature in a collective heating system
DE2256769B2 (en) * 1972-11-20 1979-05-31 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Hot water circulation central heating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1579986A1 (en) * 1966-02-17 1970-09-24 Ondal Gmbh Control procedures, especially for heating systems, and means for its implementation
DE1928575B2 (en) * 1968-06-15 1971-03-11 INDEPENDENT CONTROL DEVICE FOR A PUMP COLLECTIVE HEATING SYSTEM
DE2256769B2 (en) * 1972-11-20 1979-05-31 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Hot water circulation central heating
DE2363231A1 (en) * 1972-12-20 1974-07-18 Pont A Mousson CENTRAL HEATING SYSTEM WITH THERMAL CONTROL
DE2452515A1 (en) * 1974-11-06 1976-05-13 Burger Eisenwerke Ag Circulation pump control in heating systems - has pump switched on and off by two-way thermostat dependent on heat load
DE2714511B1 (en) * 1977-04-01 1978-02-02 Danfoss As Device for regulating the flow temperature in a collective heating system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Ondal-Regeltechnik" Best. Nr. 35052048, "Automatikmischregler-Ondamat" Apr. 1978 *
DE-Z.: "IKZ" H. 5, 1972, S. 62 *
Prospekt: "Ondamat" Best. Nr. 35213117 Nov. 1977 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528155A1 (en) * 1982-06-07 1983-12-09 Gras Robert Water temp. regulator for central heating system - uses temp. transducers giving both controlled and on-off opening of two series valves to provide flow regulation
NL8300226A (en) * 1983-01-21 1984-08-16 Agpo Enertec B V District heating temperature control - has capillary thermostat connected to branch line and inlet
DE3505603A1 (en) * 1985-02-18 1986-08-21 Happel GmbH & Co, 4690 Herne Process and apparatus for regulating the temperature in rooms to be temperature-controlled
EP0195255A2 (en) * 1985-02-18 1986-09-24 HAPPEL GmbH & Co. Method and apparatus for space temperature regulation
EP0195255A3 (en) * 1985-02-18 1987-06-10 HAPPEL GmbH & Co. Method and apparatus for space temperature regulation
EP2863134A1 (en) * 2013-10-15 2015-04-22 Grundfos Holding A/S Method for adjusting a heating curve
WO2015055482A1 (en) * 2013-10-15 2015-04-23 Grundfos Holding A/S Method for adapting a heating curve
US10801737B2 (en) 2013-10-15 2020-10-13 Grundfos Holding A/S Method for adapting a heating curve
EP3779286A1 (en) * 2019-08-12 2021-02-17 Huu-Thoi Le Method for operating a heating system
DE102019005722A1 (en) * 2019-08-12 2021-02-18 Huu-Thoi Le Procedure for operating a heating system
IT202100025670A1 (en) * 2021-10-07 2023-04-07 Accademia Europea Bolzano Eurac Res REGULATION SYSTEM FOR A THERMO-HYDRAULIC CIRCUIT AND CONTROL METHOD
EP4163554A1 (en) * 2021-10-07 2023-04-12 Accademia Europea Bolzano - Eurac Research Regulation system for a thermo-hydraulic circuit and control method
US12140977B2 (en) 2021-10-07 2024-11-12 Accademia Europea Bolzano—Eurac Research Regulation system for a thermo-hydraulic circuit and control method

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Legal Events

Date Code Title Description
8100 Publication of patent without earlier publication of application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8331 Complete revocation