WO1987007703A1 - Systeme de chauffage comportant un accumulateur de chaleur - Google Patents

Systeme de chauffage comportant un accumulateur de chaleur Download PDF

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Publication number
WO1987007703A1
WO1987007703A1 PCT/SE1986/000279 SE8600279W WO8707703A1 WO 1987007703 A1 WO1987007703 A1 WO 1987007703A1 SE 8600279 W SE8600279 W SE 8600279W WO 8707703 A1 WO8707703 A1 WO 8707703A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
heat
heated
heat accumulator
heating system
Prior art date
Application number
PCT/SE1986/000279
Other languages
English (en)
Inventor
Gunnar Sigvard Nilsson
Original Assignee
Gunnar Sigvard Nilsson
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
Priority claimed from SE8406292A external-priority patent/SE8406292L/xx
Application filed by Gunnar Sigvard Nilsson filed Critical Gunnar Sigvard Nilsson
Priority to PCT/SE1986/000279 priority Critical patent/WO1987007703A1/fr
Publication of WO1987007703A1 publication Critical patent/WO1987007703A1/fr

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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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system

Definitions

  • the present invention relates to a heating system including a heat accumulator.
  • Heating of rooms is often combined with heating of water for tapping, performed in two separate circuits, a closed circuit for radiator water utilized for room heating purposes, and an open circuit for water intended for tapping.
  • the hot tapping water should have a temperature in the region of 50-70 C, whereas the radiator water can be maintained at a o lower temperature, usually within the region of 40-50 . C, but depending on the annual season.
  • a heat exchanger or heat accumulator including a tank with a liquid medium, arranged to store heat emitted from one or a number of heat sources, and including heat absorbing tubular members, having a through flow of radiator water and water for tapping.
  • the object of the present invention is to disclose a heating system, being a combination of a heat source, a heat store and a radiator circuit, facilitating a simplified design of the heat generating unit, and in embodiments where the heat generating unit comprises of a heat pump with a liquid medium in the secondary circuit, the possibility of an improved grade of efficiency for the heat pump is also offered.
  • This feature is related to the fact that the grade of efficiency for such a heat pump is strongly related to the difference in temperature between outgoing and incoming flow in the secondary side of the heat pump, and that such a favourable difference of temperature is achieved in a heating system according to the present invention.
  • the heat accumulator included in the heating system makes it also possible to store heat to be used for heating of hot water for tapping, and also use as added heat for heating radiators when an increased heat is required.
  • the heating system includes a heat source, from which a heated liquid medium is arranged to flow in a heated circuit, arranged to pass through a heat accumulator with a l quid medium, and by means of one or a number of coils emit or absorb heat in relation to the the liquid medium existing within the heat accumulator, and it is mainly characterised in that a from the heat accumulator outgoing part of the circuit in direction from the heat accumulator is arranged connected in a return flow path to the heat source via one or a number of radiators utilized for room heating, and that in the heated circuit included heat emitting coils, and coils for heating of water for tapping, are arranged alternating in relation to each other in the vertical direction of extension for the heat accumulator.
  • the heat source comprises of a heat pump
  • the heated circuit comprises of the secondary circuit - the heated circuit - of the heat pump.
  • a heat pump having a primary circuit i (the evaporation and condensation circuit), and a heated secondary circuit 2.
  • a flow of a liquid medium in the secondary circuit 2 heats the contents of a heat accumulator 3.
  • Said contents comprises of a liquid medium, e.g. water.
  • Heat emission from the secondary circuit 2 is accomplished efficiently by shaping said circuit 2 into two coils, 4 and 5 respectively, surrounded by the heat accumulator 3, and through which the medium of the secondary circuit flows.
  • the coils 4, 5 included in the secondary circuit 2 are used to emit heat to the liquid medium existing within the heat accumulator 3, and according to a second function, the coils 4, 5 are utilized to absorb additional heat from the heat accumulator 3.
  • the heat accumulator also includes two internally connected coils 7, 8, forming a part of the circuit for tapping water. These two coils 7, 8 are arranged located in an alternating relationship to the coils 4, 5 included in the secondary circuit 2, i.e. with a first coil 7 located interposed between the coils 4, 5, and with a second coil 8 located above the upper coil 4, as shown in the circuit diagram.
  • the part of the secondary circuit 2 serving as a return circuit from the heat accumulator 3 is utilized to supply heat to a number of radiators R, the throughflow of which is assumed to be controlled by means of thermostatically controlled valve means.
  • the secondary circuit 2 is arranged with a by-pass circuit 9, connecting the secondary circuit 2 at two points, located before, respectively after, the points of connection for supply and return flow of radiator water to the radiators R, i.e. the radiator circuit.
  • the flow through the by-pass circuit is controlled by means of a valve means 10, which is controlled by the pressure within the secondary circuit 2. Changes in the flow requirements within the radiator circuit do thereby not influence the total flow within the secondary circuit 2, since the total flow is maintained at a constant level by means of the by-pass circuit 9.
  • said circuit 2 also includes a circulation pump 11 having a variably adjustable flow.
  • Temperature sensing is performed at the outlet for the secondary circuit 2 from the heat pump, and when the sensed temperature reaches a predetermined maximum value, a temperature sensing thermostat causes the heat pump to stop.
  • the heat required by the radiator circuit may exceed the total heat obtainable from the heat source.
  • This requirement is met by the fact that the heat accumulator is arranged with an electric heating means being an immersion heater 12, located adjacent to the coil 5.
  • an immersion heater 13 is also arranged in the heat accumulator adjacent to the coils 7, 8 utilized for heating of tapping water.
  • the heating system according to the present invention results in a number of advantages. It is thus possible for the heating system to operate and store heat in the heat accumulator 3 when energy is available, and independent of required output. A buffer of stored heat is accomplished in such a way, that the liquid contents of the heat accumulator 3 on the one hand uses the known feature that hot water raises in direction upwards, on the other hand due to the fact that any definite layers with different temperature levels are not formed within the heat accumulator 3, but rather a gradually increased temperature from the bottom portion in direction upwards, which results in a high grade of efficiency and favourable operation.
  • the medium transported in the secondary circuit 2 for emission of heat from the heat source to the heat accumulator 3 and the radiator circuit can be given a volume flow adapted to each size of heat pump, whereby the heat pump always operates at a suitable operating point adapted to give maximum efficiency, which results in the best economy.
  • the heat absorbed by the secondary circuit 2 from the heat pump is used completely, since the heat is emitted to the heat accumulator 3, the water for tapping, as well as the radiators R.
  • the medium existing in the secondary circuit 2 thereafter returns well cooled to the heat pump, in order to take up heat again.
  • the secondary circuit 2 can hereby by means of the coils 4, 5 take up this additionally supplied heat for emission to the radiators R, and the v/ater for tapping is also heated further.
  • a circuit 14 is connected to the upper and lower portion of the heat accumulator 3, including a thermically controlled valve 15, a by-pass circuit 16, a furnace 17 with a water tank connected to the circuit 14, and a circulation pump 18 for accomplishing flow within the circuit 14.
  • the water in associated tank is heated by means of the furnace 17, and circulated through the circuit i4 by means of the circulation pump 18 in such a way, that the heated water is supplied to the upper portion of the heat accumulator 3.
  • the flow is controlled by the thermically controlled valve 15 in such a fashion, that heated water is only supplied in such a volume, that the circulation within the heat accumulator 3 is not disturbed.
  • the volume of water that is not allowed to flow through the thermically operated valve 15 is returned via the by-pass circuit 16 to the water tank by the furnace 17. Heating by means of the furnace 17 is continued until the heat accumulator 3 has reached desired temperature level, whereafter the combustion in the furnace 17 is interrupted.
  • the heat accumulator 3 is also arranged with an expansion circuit 19, connected at the upper portion of the heat accumulator 3, and including a water lock, or alternatively an expansion tank.
  • the example of an embodiment of a heating system according to the present invention described above comprises of a combination of a heat pump and a heat accumulator 3, and examples of further heat sources indicated to supply additional heat.
  • heat sources than heat pumps can be used as main heat heat sources in combination with a heat accumulator 3 and possibly required additional heat sources for supplying additional heat, and that the present invention thus in no way is restricted to use in connection with heat pumps.
  • the number of coils within the heat accumulator 3 can obviously be further varied as desired with regard to number and intended use for each case of application.
  • the heating system according to the present invention is thus in no way restricted to the embodiment described above, but it can be further varied within the scope of the inventive thought and the following claims.

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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

Système de chauffage, comportant une source de chaleur, à partir duquel un milieu liquide chauffé est destiné à circuler dans un circuit chauffé (2), en passant tout d'abord dans un accumulateur de chaleur (3) avec un milieu liquide, et au moyen d'un ou de plusieurs serpentins (4, 5), à émettre ou absorber de la chaleur par rapport au milieu liquide existant à l'intérieur de l'accumulateur de chaleur (3) et entourant le ou les serpentins (4, 5), la partie du circuit (2) sortant de l'accumulateur de chaleur (3) étant agencée pour chauffer un ou plusieurs radiateurs (R) utilisés pour le chauffage d'une pièce. La source de chaleur est avantageusement une pompe à chaleur, le circuit chauffé (2) étant le circuit secondaire - le circuit chauffé - de la pompe à chaleur. Le milieu liquide se trouvant à l'intérieur de l'accumulateur de chaleur (3) est destiné à chauffer pour la consommation de l'eau circulant dans un circuit fermé, avec des serpentins (4, 5) inclus dans le circuit chauffé (2), des serpentins (7, 8) de chauffage de l'eau de consommation étant agencés en alternance l'un par rapport à l'autre dans le sens de la hauteur de prolongement de l'accumulateur de chaleur (3). On peut fournir de la chaleur supplémentaire au milieu liquide existant dans l'accumulateur de chaleur (3) au moyen d'un ou de plusieurs dispositifs de chauffage à immersion (12, 13), ou bien en disposant ledit milieu liquide de manière à ce qu'il traverse, via un circuit (14), un réservoir d'eau, chauffé à l'aide d'une chambre de combustion (17). L'écoulement dans le circuit chauffé (2), qui, après avoir quitté l'accumulateur de chaleur (3), alimente un circuit de radiateur, est maintenu constant à l'aide d'un circuit de dérivation (9) et d'une vanne (10) commandée en pression dans ledit circuit (9).
PCT/SE1986/000279 1984-12-11 1986-06-10 Systeme de chauffage comportant un accumulateur de chaleur WO1987007703A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE1986/000279 WO1987007703A1 (fr) 1984-12-11 1986-06-10 Systeme de chauffage comportant un accumulateur de chaleur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8406292A SE8406292L (sv) 1984-12-11 1984-12-11 Uppvermningssystem
PCT/SE1986/000279 WO1987007703A1 (fr) 1984-12-11 1986-06-10 Systeme de chauffage comportant un accumulateur de chaleur

Publications (1)

Publication Number Publication Date
WO1987007703A1 true WO1987007703A1 (fr) 1987-12-17

Family

ID=26658835

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000279 WO1987007703A1 (fr) 1984-12-11 1986-06-10 Systeme de chauffage comportant un accumulateur de chaleur

Country Status (1)

Country Link
WO (1) WO1987007703A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735557A1 (de) * 1997-08-16 1999-02-18 Bosch Gmbh Robert Heizungsanlage
US20150226490A1 (en) * 2014-02-07 2015-08-13 Sylvain Laberge Baseboard for use in preheating water

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453964A (en) * 1973-11-08 1976-10-27 Consumer Power Co Ltd Thermal accumulators for heating systems
DE2831017A1 (de) * 1977-07-15 1979-02-01 Patlico Rights Nv Waermespeicher- und -abgabevorrichtung fuer waerme aus einem von der sonne aufgeheizten fluid
US4139152A (en) * 1977-04-05 1979-02-13 Kronberger Jr Joseph A Heating system
DE2619744C2 (de) * 1976-05-05 1982-05-19 Robert Bosch Gmbh, 7000 Stuttgart Anlage zum Beheizen eines Gebäudes und zur Warmwasserbereitung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453964A (en) * 1973-11-08 1976-10-27 Consumer Power Co Ltd Thermal accumulators for heating systems
DE2619744C2 (de) * 1976-05-05 1982-05-19 Robert Bosch Gmbh, 7000 Stuttgart Anlage zum Beheizen eines Gebäudes und zur Warmwasserbereitung
US4139152A (en) * 1977-04-05 1979-02-13 Kronberger Jr Joseph A Heating system
DE2831017A1 (de) * 1977-07-15 1979-02-01 Patlico Rights Nv Waermespeicher- und -abgabevorrichtung fuer waerme aus einem von der sonne aufgeheizten fluid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735557A1 (de) * 1997-08-16 1999-02-18 Bosch Gmbh Robert Heizungsanlage
US20150226490A1 (en) * 2014-02-07 2015-08-13 Sylvain Laberge Baseboard for use in preheating water
US9696093B2 (en) * 2014-02-07 2017-07-04 Sylvain Laberge Baseboard for use in preheating water

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