EP0548719A1 - Système de chauffage pour la production de chaleur pour une installation de chauffage et pour un accumulateur d'eau sanitaire - Google Patents

Système de chauffage pour la production de chaleur pour une installation de chauffage et pour un accumulateur d'eau sanitaire Download PDF

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Publication number
EP0548719A1
EP0548719A1 EP92121213A EP92121213A EP0548719A1 EP 0548719 A1 EP0548719 A1 EP 0548719A1 EP 92121213 A EP92121213 A EP 92121213A EP 92121213 A EP92121213 A EP 92121213A EP 0548719 A1 EP0548719 A1 EP 0548719A1
Authority
EP
European Patent Office
Prior art keywords
heating
heat exchanger
water
heating system
burner
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.)
Granted
Application number
EP92121213A
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German (de)
English (en)
Other versions
EP0548719B1 (fr
Inventor
Theo Dipl.-Phys. Jannemann
Michael Dipl.-Ing. Koschowitz
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.)
EOn Ruhrgas AG
Original Assignee
Ruhrgas AG
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Publication date
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Application filed by Ruhrgas AG filed Critical Ruhrgas AG
Publication of EP0548719A1 publication Critical patent/EP0548719A1/fr
Application granted granted Critical
Publication of EP0548719B1 publication Critical patent/EP0548719B1/fr
Anticipated expiration legal-status Critical
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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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water

Definitions

  • the invention relates to a heating system for combined heat generation for a heating system and a storage tank for industrial water with a burner for liquid and gaseous fuels, a heating heat exchanger through which the heating water flows, a heating water circuit in which a mixing device is arranged, and a domestic water heat exchanger for heating the domestic water.
  • Heating systems of this type are generally known and are used in addition to the heating of apartments and buildings for indirect hot water heating in a storage tank.
  • a heat exchanger through which heating water flows is usually arranged in the exhaust gas stream of a burner.
  • the heating water is used for space heating and for indirect hot water heating by means of a heat exchanger arranged in the storage tank.
  • a mixing device arranged in the heating water circuit is connected to a control device customary for such heating systems.
  • the mixing device is used to distribute the heated heating water to the heating system and to the heat exchanger of the storage tank.
  • Domestic water is usually heated using a priority switch.
  • the known heating systems have the disadvantage that the burner output is primarily designed to cover the heat requirement for hot water preparation and is therefore often significantly higher than the heating requirement. Another disadvantage are the relatively large ones Downtime losses in hot water generation in the summer months. Furthermore, more energy-conscious consumer behavior and improved thermal insulation of the houses ensure that the heating requirement drops, whereas an increasing demand for comfort increases the energy requirement for hot water preparation as a percentage compared to the heating requirement. In the known heating systems, this leads to a deterioration in the overall efficiency and thus to unnecessarily high energy costs.
  • the invention is therefore based on the object of designing a heating system of the generic type in such a way that the heat transfer processes are optimized and thus an increase in energy utilization is achieved, so that the overall efficiency of the heating system is improved.
  • this object is achieved according to the invention in that the domestic water heat exchanger is arranged within the heating heat exchanger and the heating water flows around it, that the heating water circuit can be separated by means of the mixing device, that the storage tank acts as a stratified storage tank working on the displacement principle is formed and has a domestic water charging circuit provided with a charging pump.
  • Such a heating system enables optimum use of the condensing calorific during a large part of the year in the case of domestic hot water heating, sole heating operation and combined operation.
  • the arrangement of the hot water heat exchanger within the heating heat exchanger brings about an improvement in efficiency, in particular in that the condensation heat contained in the exhaust gas of the burner can be used in all operating modes. Another advantage is that there is no need for additional heat exchangers.
  • the heating water circuit is interrupted for domestic water heating, which usually takes priority over heating operation.
  • the process water in the heat exchanger ensures that the temperature of the heating water circulated in a greatly reduced circuit quickly drops. This causes a low surface temperature on the outside of the heat exchanger and thus the condensation of the water vapor in the exhaust gas.
  • the temperature of the heating water in the annulus is only about 5 to 10 K higher than that of the hot water to be heated, which preferably flows in cocurrent to the heating water through the heat exchanger during the entire heating time of the hot water.
  • the domestic water is heated to fill the stratified storage tank in parallel to the heating mode.
  • Heating and process water preferably flow in direct current.
  • the storage container is designed as a stratified storage system operating on the displacement principle. This is particularly advantageous in terms of energy.
  • the invention is further developed in that the heating heat exchanger forms a coaxial tube with a hot water heat exchanger. This advantageously brings about good heat transfer between the heat exchangers.
  • the coaxial tube is designed in a spiral shape, so that in connection with a burner with a cylindrical flame holder, optimal heat transfer is achieved. Another advantage is that such a shape reduces the flow resistances in the coaxial tube. The number of 3 to 4 turns has proven to be advantageous for optimal heat transfer.
  • the coaxial tube is wound around the burner, which has a cylindrical flame holder and is designed as an over-stoichiometric mixing burner.
  • the low exhaust gas surface temperature of the Heating heat exchanger enables optimal condensation of the water vapor in the exhaust gas flow from the burner.
  • the burner output can advantageously be based exclusively on the heating requirements. This has the advantage that you can get by with less powerful burners and at the same time enables continuous burner operation for domestic water heating. This reduces standstill losses, especially in the summer months.
  • the output of the burner and / or the speed of the pump can be regulated, preferably in a ratio of at least 1: 3.
  • the burner is optimally adapted to the respective heating requirements and the energy required to heat the process water. This reduces the number of interruptions in burner operation and thus also helps to reduce downtime losses.
  • the invention is further developed in that the running direction of the charge pump is reversible depending on the state of charge of the storage and the heating requirement, so that domestic water from the stratified storage can be used as a heat source for the heating water.
  • the heat stored in the lower third is used to buffer the heating system by passing hot domestic water through the coaxial pipe in counterflow to the heating water to be heated.
  • the process water is removed from the upper part and returned to the lower part of the stratified storage tank, so that no burner operation is necessary.
  • the basic stock is understood to mean that the upper third of the stratified storage tank is filled with belly water heated to the desired temperature.
  • the comfort range is reached when the top two thirds of the stratified storage tank are filled with hot water heated to the target temperature.
  • the heat stored in the lower third can be used to buffer the heating system.
  • the heating heat exchanger Due to the external ribbing or profiling of the heating heat exchanger according to the invention, its surface area is increased in such a way that an optimal heat exchange takes place between the exhaust gas of the burner and the heating water flowing through the heating heat exchanger.
  • the domestic water heat exchanger arranged in the heating heat exchanger is also provided with ribs or profile elements, which can form a heat-transferring connection with the heating heat exchanger. These elements serve to improve the heat transfer between heating water and process water.
  • the heating water is guided according to the invention in countercurrent to the process water through the coaxial pipe.
  • the inventive design of the hot water heat exchanger made of copper or stainless steel and the heating heat exchanger made of aluminum bring about good heat conduction between the hot and heating water and between due to the high heat transfer quotients Heating water and exhaust gas.
  • the heating heat exchanger is provided with a corrosion-resistant coating.
  • the coaxial tube can be produced relatively easily and inexpensively.
  • the drawing shows the schematic structure of a heating system according to the invention for space heating and domestic water heating, the illustration being limited to the essential components.
  • the system parts for space heating are not shown.
  • An over-stoichiometric premixing gas burner 1 with a cylindrical flame holder 2 serves as the heat generator for the heating system.
  • the output of the gas burner 1 can be regulated in a modulating manner.
  • the gas burner 1 is surrounded by a coaxial tube 3. This is formed by a heating heat exchanger 4 and a domestic hot water heat exchanger 5 arranged therein.
  • the coaxial tube 3 is spiral-shaped and is arranged at a distance around the cylindrical flame holder 2 of the gas burner 1. The resulting exhaust gas condensate is collected and discharged via a device (not shown) arranged below the coaxial tube 3.
  • the heating water to be heated flows in the coaxial tube 3 through an annular space which is formed by the outside of the process water heat exchanger 5 and by the inside of the heating heat exchanger 4.
  • the heating water is circulated by means of a pump 6 arranged on the return side in the heating water circuit 15.
  • the process water flows through the process water heat exchanger 5 and is connected via pipes 7 to a stratified accumulator 8 which works on the displacement principle.
  • a stratified accumulator 8 which works on the displacement principle.
  • cold water is removed from its lower part and fed to the process water heat exchanger 5.
  • the process water is heated and then returned to the stratified storage tank 8 by being led into the upper part of the container.
  • the process water is circulated by means of a charge pump 9, the direction of which can be reversed depending on the state of charge of the store 8 and the heating requirements.
  • the stratified storage tank 8 has a cold water supply 10 in the lower part and a removal point 11 for the hot water intended for consumption in the upper part.
  • the water temperature is measured at three points in the stratified storage tank 8.
  • a first temperature sensor 12 arranged in the lower part a second temperature sensor 13 arranged in the middle part and a third temperature sensor 14 arranged in the upper part are used, which are connected to a control device (not shown).
  • the respective charge state of the stratified storage device 8 can be determined by means of the three temperature sensors 12, 13, 14.
  • a mixing device 16 is arranged, which can be regulated in dependence on the heating and / or the hot water requirement in such a way that the heating water circuit 15 on the mixing device 16 can be closed.
  • the gas burner 1, the mixing device 16 and the charge pump 9 and the circulation pump 6 are controlled by means of the control device customary for such heating systems.
  • heating system could be combined with a controlled home ventilation system, so that a comprehensive heat recovery is possible.
  • the heating water circuit can be used to supply an indirectly heated warm air generator.

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)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Central Heating Systems (AREA)
EP92121213A 1991-12-20 1992-12-12 Système de chauffage pour la production de chaleur pour une installation de chauffage et pour un accumulateur d'eau sanitaire Revoked EP0548719B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142488A DE4142488A1 (de) 1991-12-20 1991-12-20 Beheizungssystem zur kombinierten waermeerzeugung und eine heizungsanlage und einen speicherbehaelter fuer brauchwasser
DE4142488 1991-12-20

Publications (2)

Publication Number Publication Date
EP0548719A1 true EP0548719A1 (fr) 1993-06-30
EP0548719B1 EP0548719B1 (fr) 1995-01-18

Family

ID=6447821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121213A Revoked EP0548719B1 (fr) 1991-12-20 1992-12-12 Système de chauffage pour la production de chaleur pour une installation de chauffage et pour un accumulateur d'eau sanitaire

Country Status (3)

Country Link
EP (1) EP0548719B1 (fr)
AT (1) ATE117423T1 (fr)
DE (2) DE4142488A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407457A1 (de) * 1994-03-05 1995-09-07 Broetje August Gmbh & Co Verfahren zum Betreiben einer Heizungsanlage mit Speicherraum
GB2450414B (en) * 2007-06-19 2012-06-20 Ravenheat Mfg Ltd Improvements in and relating to water heating
WO2017220999A1 (fr) * 2016-06-20 2017-12-28 Peter Evans Chaudière

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005019856B4 (de) * 2005-04-28 2009-08-20 Sun-Systems Gmbh Durchlauf-Erhitzer für eine Nutzflüssigkeit und hydraulische Schaltung
EP1892480B1 (fr) * 2006-08-22 2010-11-24 Sun-Systems GmbH Chauffe eau pour des liquides, utilisation dudit chauffe-eau et méthode de chauffage d'un fluide dans un tel circuit hydraulique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1753433B1 (de) * 1961-03-27 1970-08-06 Buderus Eisenwerk Geraet zur Erwaermung von Fluessigkeiten,insbesondere von Wasser
EP0133604A1 (fr) * 1983-08-12 1985-02-27 Compagnie Internationale Du Chauffage Chaudière à échangeur en serpentin
EP0385700A1 (fr) * 1989-02-28 1990-09-05 Michael John Nunnerley Appareil d'échange de chaleur, système d'échange de chaleur, méthode pour améliorer l'efficacité d'échange de chaleur, et circuit de réfrigération
DE4007439A1 (de) * 1990-03-09 1991-09-12 B E C Henning Becker Gmbh Verfahren zur beseitigung bakterieller verunreinigungen im wasser eines warmwasserbereitungsbehaelters und vorrichtung zur durchfuehrung des verfahrens

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2142545B1 (fr) * 1971-08-25 1973-02-08 Joh. Vaillant Kg, 5630 Remscheid
US3999709A (en) * 1975-05-05 1976-12-28 Estabrook Paul S Water heater
DE8111726U1 (de) * 1981-04-18 1982-02-04 Kempf, Lothar, 5239 Unnau Pufferspeicher fuer eine anlage zur beheizung von gebaeuden und zur erwaermung von brauchwasser
DE8530184U1 (de) * 1985-10-22 1986-05-07 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Wasserheizgerät
DE3714261C1 (de) * 1987-04-29 1988-07-07 Rolf Bommer Brennwert-Heizkessel und Verfahren zu seinem Betreiben

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1753433B1 (de) * 1961-03-27 1970-08-06 Buderus Eisenwerk Geraet zur Erwaermung von Fluessigkeiten,insbesondere von Wasser
EP0133604A1 (fr) * 1983-08-12 1985-02-27 Compagnie Internationale Du Chauffage Chaudière à échangeur en serpentin
EP0385700A1 (fr) * 1989-02-28 1990-09-05 Michael John Nunnerley Appareil d'échange de chaleur, système d'échange de chaleur, méthode pour améliorer l'efficacité d'échange de chaleur, et circuit de réfrigération
DE4007439A1 (de) * 1990-03-09 1991-09-12 B E C Henning Becker Gmbh Verfahren zur beseitigung bakterieller verunreinigungen im wasser eines warmwasserbereitungsbehaelters und vorrichtung zur durchfuehrung des verfahrens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407457A1 (de) * 1994-03-05 1995-09-07 Broetje August Gmbh & Co Verfahren zum Betreiben einer Heizungsanlage mit Speicherraum
GB2450414B (en) * 2007-06-19 2012-06-20 Ravenheat Mfg Ltd Improvements in and relating to water heating
WO2017220999A1 (fr) * 2016-06-20 2017-12-28 Peter Evans Chaudière
EP3472530A1 (fr) * 2016-06-20 2019-04-24 Peter Evans Chaudière

Also Published As

Publication number Publication date
DE4142488A1 (de) 1993-07-01
ATE117423T1 (de) 1995-02-15
EP0548719B1 (fr) 1995-01-18
DE59201234D1 (de) 1995-03-02

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