EP1764561A1 - Procédé d'opération d'une installation de production d'énergie thermique - Google Patents

Procédé d'opération d'une installation de production d'énergie thermique Download PDF

Info

Publication number
EP1764561A1
EP1764561A1 EP05020295A EP05020295A EP1764561A1 EP 1764561 A1 EP1764561 A1 EP 1764561A1 EP 05020295 A EP05020295 A EP 05020295A EP 05020295 A EP05020295 A EP 05020295A EP 1764561 A1 EP1764561 A1 EP 1764561A1
Authority
EP
European Patent Office
Prior art keywords
heater
hot water
water tank
temperature
buffer
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.)
Withdrawn
Application number
EP05020295A
Other languages
German (de)
English (en)
Inventor
Martin Kramer
Bram Peters
Georg Van De Braak
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.)
RWE Fuel Cells GmbH
Original Assignee
RWE Fuel Cells 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 RWE Fuel Cells GmbH filed Critical RWE Fuel Cells GmbH
Priority to EP05020295A priority Critical patent/EP1764561A1/fr
Publication of EP1764561A1 publication Critical patent/EP1764561A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/004—Central heating systems using heat accumulated in storage masses water heating system with conventional supplementary heat source
    • 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
    • F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
    • 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
    • F24D2101/00—Electric generators of small-scale CHP systems
    • F24D2101/30—Fuel cells
    • 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
    • F24D2103/00—Thermal aspects of small-scale CHP systems
    • F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
    • F24D2103/13—Small-scale CHP systems characterised by their heat recovery units characterised by their heat exchangers
    • 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
    • F24D2103/00—Thermal aspects of small-scale CHP systems
    • F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
    • F24D2103/17—Storage tanks
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply

Definitions

  • the invention relates to a method for operating a system for generating thermal energy with a first heater and at least a second heater, wherein the second heater is preferably designed as a heater that generates both thermal and electrical energy, wherein the system further comprises a buffer memory for thermal energy of the second heater and a water heater has, which is thermally coupled to the buffer memory and wherein the loading of the water heater takes place depending on at least one temperature value of at least one temperature sensor in the hot water tank directly by the operation of the first heater.
  • a method for operating a system for the simultaneous generation of electrical and thermal energy with a fuel cell heater is for example from DE 103 19 645 A1 known.
  • the system operated with the method described there comprises a stratified storage tank for storing thermal energy with at least one temperature sensor in the lower region of the stratified storage tank, a temperature sensor in the storage charging pipe and an additional heating appliance.
  • Layered storage for hot water is usually characterized by the fact that the temperature level decreases from top to bottom.
  • Process water stratified storage tanks are filled from below with cold process water. From the lower part of cooler water is removed, fed to a heater, heated there and fed back into the upper part of the memory. This creates a temperature stratification within the memory. The temperature within the hot water tank is often kept relatively high for hygienic reasons. In the DE 103 19 645 A1 is criticized that such a high temperature level would result in fuel cell systems that the fuel cell would have to be operated clocking, which should be avoided for reasons of reduced fuel cell life thereby.
  • Such a procedure is suitable when the fuel cell heater is used directly for loading a stratified storage tank.
  • a cyclic operation of the fuel cell system is to be avoided in such a case.
  • the fuel cell system should be operated with long runtimes, since the startup processes are causing wear.
  • long terms increase the fuel cell's economy.
  • a method for charging a memory of a heating system with a fuel cell heater in which the charge of the memory is started with full charging power of the burner.
  • the charging power is modulated accordingly, whereby a shutdown of the heater is avoided.
  • a fuel cell heater or another heater for generating thermal and / or electrical energy as an additional or second heater can also be decoupled by the use of a buffer memory within certain limits of the decrease in thermal energy.
  • the flow temperature of a buffer storage is not sufficient for the heating of drinking water, which should be kept at a temperature of about 60 ° C for the reasons mentioned above.
  • the heating water or drinking water must be reheated by a conventional heater to the required flow temperature. This is also a known procedure in so-called combined heat and power plants (combined heat and power) and solar systems.
  • the loading of the hot water tank in known systems of the type mentioned is usually carried out as a function of the temperature at a certain point in the hot water tank.
  • a temperature sensor provided for this purpose measures too low a temperature of the service water at its location in the store. Usually, the water above the sensor is still warm enough, and there is cold water below the sensor.
  • the heater detects a need for heat with this sensor. It generates warm heating water and pumps it through the heating coil. In order to achieve a good heat transfer, a flow of 10 to 20 liters per minute and a flow temperature of the heating water of up to 85 C is set. The return temperature increases during the heating of the process water up to 70 ° C. The heater completes a charge cycle when the temperature of the service water at the sensor is high enough.
  • the invention is therefore based on the object to improve a method of the type mentioned in that it is possible to use significantly more energy from the buffer tank for hot water.
  • the object is achieved according to the invention in that an additional loading of the hot water tank is done exclusively by coupling heat from the buffer memory, that the coupling takes place in the form of insects and that the insectszyklen be initiated regardless of the temperature measured at the temperature sensor.
  • heat is introduced from the buffer memory in the hot water tank before the heater detects a heat demand for the heating of service water with the help of the temperature sensor provided for this purpose. Since the cold water in the hot water tank is preheated by this, a charging cycle of the heater is shortened, if necessary, this is even avoided.
  • the flow of a heat exchanger in or on the hot water tank is fed by means of a variable speed pump from the buffer memory during an intermediate charging cycle, which is designed as Schumacherpuffer notes.
  • the control of the pump can be done, for example, depending on the temperature of the buffer storage flow and the buffer storage return.
  • the aim is to achieve the best possible heat transfer from the buffer storage flow to the water contained in the process water storage tank by means of a regulated volume flow.
  • the initiation of intermediate charging cycles can take place, for example, at predetermined time intervals.
  • the duration of an additional charge cycle or intermediate charge cycle depends on the supply and return temperatures of the buffer and on the current pump speed.
  • the initiation of intermediate charging cycles can also take place as a function of the demand for electrical energy of the object to be supplied (building), since an increase in electrical energy often correlates with the consumption of hot service water.
  • the second heater is designed as a fuel cell.
  • the first heater may be formed in a conventional manner as a gas or oil burner.
  • the hot water tank may have a heat exchanger, which is fed by both the flow of the heater and the flow of the buffer memory.
  • the hot water tank may be formed in a known manner as a layer memory.
  • a first heater which comprises a boiler operated with an oil or gas burner.
  • a designated 10 temperature sensor is provided.
  • the designated 11 heat exchanger return line opens into the heating water return 6.
  • the heating circuit described is conventional.
  • a second heater 12 is provided, which is formed in the described embodiment as a fuel cell. This can also be configured, for example, as a solar heater.
  • the second heater 12 loads a heating water buffer tank 13. With the pump 14, the water of the buffer tank 13 is circulated through the second heater 12.
  • the water temperature in the buffer return 16 may not exceed a predetermined maximum temperature when forming the second heater 12 as a fuel cell.
  • the system should now be operated so that the largest possible proportion of the energy of the buffer memory 13 is used to heat the hot water tank 8.
  • 17 heating water via the hydraulic switch 18, the Schumachervorlauf 2 and the heat exchanger supply line 7 can be fed from the buffer memory 13 in the heat exchanger 9 via the buffer memory drain.
  • the temperature in the heating water return 6 is detected by means of a temperature sensor 19, which would have to cause a shutdown of the second heater 12 via the control unit 20.
  • the temperature sensor 10 in the hot water tank 8 determines a need for heat energy, due to a cold water inflow at the service water inlet 21.
  • the temperature sensor 10 would be the control device 22nd of the boiler for starting the first heater for the purpose of initiating a charging cycle for the hot water tank 8 cause.
  • the method according to the invention now provides that between two charging cycles of the hot water tank 8 an intermediate charge of the hot water tank 8 via the buffer memory 13 takes place, before the temperature sensor 10 detects falling below a certain minimum temperature in the hot water tank.
  • the intermediate charge is caused by the control unit 20, which switches a changeover valve 23 and a speed-controlled pump 24.
  • About the speed-controlled pump 24 heating water is fed from the buffer memory drain 17 and the heat exchanger supply line 7 in the heat exchanger 9, wherein the water contained in the hot water tank 8 is loaded or preheated with the heat of the buffer memory 13. Because of this, the initiation of a charging cycle due to temperature drop across the temperature sensor 10 can be delayed or completely avoided.
  • the intermediate charging cycles can be carried out at fixed predetermined time intervals, alternatively, the initiation of intermediate charging cycles depending on the power requirements in the building.

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)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP05020295A 2005-09-16 2005-09-16 Procédé d'opération d'une installation de production d'énergie thermique Withdrawn EP1764561A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05020295A EP1764561A1 (fr) 2005-09-16 2005-09-16 Procédé d'opération d'une installation de production d'énergie thermique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05020295A EP1764561A1 (fr) 2005-09-16 2005-09-16 Procédé d'opération d'une installation de production d'énergie thermique

Publications (1)

Publication Number Publication Date
EP1764561A1 true EP1764561A1 (fr) 2007-03-21

Family

ID=35929883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05020295A Withdrawn EP1764561A1 (fr) 2005-09-16 2005-09-16 Procédé d'opération d'une installation de production d'énergie thermique

Country Status (1)

Country Link
EP (1) EP1764561A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011014035A1 (de) * 2011-03-15 2012-09-20 Olaf Brüning System und Verfahren zum Speichern thermischer Energie eines flüssigen Mediums in einem Pufferspeicher
EP4160096A1 (fr) * 2021-10-04 2023-04-05 Robert Bosch GmbH Système de chauffage hybride pour fournir de l'eau sanitaire et de la chaleur de chauffage
AT517246B1 (de) * 2009-02-18 2024-06-15 Baunach Hans Georg Heizungs- oder kühlungsanlage und verfahren zum betrieb einer heizungs- oder kühlungsanlage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316771A2 (fr) * 2001-12-03 2003-06-04 Vaillant GmbH Système pour la production simultanée d'énergie électrique et thermique avec un dispositif chauffant ayant des piles à combustible

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316771A2 (fr) * 2001-12-03 2003-06-04 Vaillant GmbH Système pour la production simultanée d'énergie électrique et thermique avec un dispositif chauffant ayant des piles à combustible

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT517246B1 (de) * 2009-02-18 2024-06-15 Baunach Hans Georg Heizungs- oder kühlungsanlage und verfahren zum betrieb einer heizungs- oder kühlungsanlage
DE102011014035A1 (de) * 2011-03-15 2012-09-20 Olaf Brüning System und Verfahren zum Speichern thermischer Energie eines flüssigen Mediums in einem Pufferspeicher
EP4160096A1 (fr) * 2021-10-04 2023-04-05 Robert Bosch GmbH Système de chauffage hybride pour fournir de l'eau sanitaire et de la chaleur de chauffage

Similar Documents

Publication Publication Date Title
DE3229344A1 (de) Dampf-kraftwerks-anlage zur bestromung eines elektrischen versorgungsnetzes
EP0001419B1 (fr) Installation de chauffage central et de préparation d'eau chaude pour usage domestique comportant une pompe à chaleur
EP2224104B1 (fr) Procédé destiné au fonctionnement d'une centrale
EP0288695B1 (fr) Chaudière à condensation et procédé pour son utilisation
EP2416073A2 (fr) Procédé et dispositif destinés au chauffage d'un fluide dans une mémoire tampon
EP2667104B1 (fr) Installation et procédé de chauffage d'eau potable
EP1764561A1 (fr) Procédé d'opération d'une installation de production d'énergie thermique
DE102009004294B4 (de) Warmwasserspeicher und Verfahren zu seinem Aufladen
EP3080407B1 (fr) Accumulation d'énergie au moyen d'un accumulateur de chaleur et d'un thermocompresseur de vapeur
DE19627271C2 (de) Heizungsanlage
EP3139103B1 (fr) Procédé de préparation de boissons chaudes
EP1898160A1 (fr) Procédé de regulation d'une installation de chauffage et installation de chauffage permettant le mettre en oeuvre
DE102007048728B4 (de) Heizkessel, Heizungsanlage sowie Verfahren zum Betreiben einer Heizungsanlage, insbesondere zur solaren Heizungsunterstützung
EP3511534A1 (fr) Centrale thermique et procédé de fonctionnement d'une centrale thermique
DE10312520B4 (de) Verfahren zum Betrieb eines solargekoppelten Wärmeträgerkreislaufes
AT413757B (de) Verfahren zur gewährleistung eines hohen warmwasserkomforts bei mit brennstoffzellenheizgeräten beheizten warmwasserspeichern
EP2522917B1 (fr) Procédé de fonctionnement d'une installation de chauffage
AT507569B1 (de) Verfahren zur erwärmung von brauchwasser
DE202012009151U1 (de) Erweiterte Wärmeenergieversorgungsanlage ,,Solarwärmemanager"
DE102013224628B4 (de) Vorrichtung zur Erwärmung von Trinkwasser für ein Verteilnetz
EP3385624B1 (fr) Procédé de fonctionnement d'une installation de préparation d'eau sanitaire ou de chauffage, et installation de préparation d'eau sanitaire
EP1172616A2 (fr) Procédé de commande pour accumulateur stratifié
AT501612B1 (de) Verfahren zum betreiben einer warmwasserbereitungsanlage und warmwasserbereitungsanlage
EP2522918B1 (fr) Procédé de fonctionnement d'une installation de chauffage
DE102008016083B4 (de) Beheizen von Gebäuden ausschließlich mit Solarenergie

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060404

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

18W Application withdrawn

Effective date: 20071106