WO2011012608A1 - Installation solaire pour la production d'eau chaude - Google Patents

Installation solaire pour la production d'eau chaude Download PDF

Info

Publication number
WO2011012608A1
WO2011012608A1 PCT/EP2010/060865 EP2010060865W WO2011012608A1 WO 2011012608 A1 WO2011012608 A1 WO 2011012608A1 EP 2010060865 W EP2010060865 W EP 2010060865W WO 2011012608 A1 WO2011012608 A1 WO 2011012608A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar
water
solar system
return
solar collector
Prior art date
Application number
PCT/EP2010/060865
Other languages
German (de)
English (en)
Inventor
Andreas Wagner
Original Assignee
Wagner & Co. Solartechnik 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 Wagner & Co. Solartechnik Gmbh filed Critical Wagner & Co. Solartechnik Gmbh
Publication of WO2011012608A1 publication Critical patent/WO2011012608A1/fr

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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0015—Domestic hot-water supply systems using solar energy
    • F24D17/0021—Domestic hot-water supply systems using solar energy with accumulation of the heated water
    • 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
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/14—Solar energy
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Definitions

  • the invention relates to a solar system for hot water treatment by means of a solar collector according to the preamble of claim 1.
  • a special solar storage tank is needed in a classic solar system for hot water preparation. In such a memory two Schuspiralen are present. In the first heating coil circulates warm water, which is won from a heating bath. The second heating coil circulates a special glycol fluid, which is heated by a solar collector. The use of a glycol fluid as a circulation medium within the solar collector is necessary to avoid frost damage to the system in winter.
  • Suitable for operation with two different circulation media storage require two heat exchangers or at least one heat exchanger and a electric heating coil.
  • these are elaborately manufactured in small or medium batches. With smaller systems, the costly design eliminates up to 50% of the acquisition costs of the entire solar system.
  • the object of the invention is to avoid these and other disadvantages of the prior art and to provide a solar system for hot water production by means of a solar collector and a memory that can be dispensed with the use of a special designed solar storage and filled in winter operation and operated.
  • the invention provides that the solar collector can be flowed through directly with water from the water supply.
  • the heated water from the solar collector reaches the hot water storage tank via the supply line by means of a circulation pump, where it flows into the lower storage area.
  • a circulation pump In the hot water tank, the heated by the solar system water at the appropriate height layers. Cooled water flows from the hot water storage tank back to the solar collector via the return line.
  • the layering which depends on the water temperature, ensures that only the coolest water is removed from the tank and directed to the solar collector. This achieves maximum system efficiency.
  • the circulation pump is arranged according to the invention in the return. Steam bubbles, which can be caused by overheating of the solar collector, are thus kept away from the circulation pump.
  • the solar collector with drinking water is flowed through directly. This avoids venting and steaming problems.
  • the circulation pump is switched off as soon as the DHW cylinder reaches a maximum temperature. scalds can be excluded.
  • the invention also provides that flow and return are connected via a common port on the memory. So also commercial hot water tanks, especially electric water heater, which are very spartan with connections are used for a solar system.
  • Hot water storage tanks especially electric water heaters, are manufactured much cheaper, in contrast to special solar storage tanks, because it is a mass market. Hot water cylinders are manufactured fully automated in large series and are therefore very inexpensive. In many Mediterranean countries, for example, these boilers are typical water heaters and thus often already present in many households.
  • the common connection is usually located on the cold water inlet of the electric boiler and allows the use of a commercial hot water tank with a solar system.
  • a hot water treatment by solar collector is thus easy to implement quickly and easily.
  • a particularly advantageous embodiment of the invention provides that the common connection is formed of an outer tube and a fluid-tight inner tube.
  • the configured with a smaller diameter inner tube is guided in the outer tube.
  • the remaining between the inner tube and outer tube gap serves as a return cross-section, while the diameter of the inner tube determines the flow cross-section.
  • outer tube and inner tube are formed as a coaxial tube.
  • the common connection for flow and return can then be screwed by means of simple screw connection of the outer tube to the standard and already existing cold water connection of the hot water tank.
  • a temperature sensor is mounted on the common connection, particularly preferably on the outer tube.
  • the temperature sensor measures by its arrangement on the outer tube almost directly the temperature of the water in the lower storage area.
  • thermally conductive materials can be used for the part of the outer tube on which the temperature sensor is retrofitted.
  • the arrangement of the temperature sensor for determining the storage water temperature at the outer tube can be dispensed with a complicated and expensive retrofitting of the memory with an internal temperature sensor.
  • a further temperature sensor is mounted in a particularly advantageous embodiment. This constantly measures the temperature within the solar collector.
  • the solar system also advantageously has a control device. This receives the temperatures measured by the temperature sensors and regulates the pump power or the operating state of the circulation pump if required.
  • the circulation pump starts.
  • the heated water flows via the flow into the lower storage area and stratifies at the appropriate height. Cooled water from the hot water tank simultaneously flows back through the return to the solar circuit.
  • the control device also has a special circuit that turns on the circulation pump briefly during a short time interval even at low temperature rise in the solar collector. As a result, water from the hot water tank moves directly to the measuring point of the temperature sensor on the outer tube. The memory internal temperature can thus be determined even more accurately.
  • the circulation pump is also operated when the collector temperature drops below 0 ° C.
  • This frost protection circuit prevents frost damage in the inventive solution.
  • the directly flowing through the solar collector Water can not freeze, as it is taken directly from the hot water tank.
  • the control device is switched so that only the amount of water is conveyed, which prevents freezing. The heat losses are therefore quite low. In areas with little frost so can be dispensed with emptying the solar panel in winter.
  • a normal solar collector and a heat pipe solar collector could be used instead of a normal solar collector and a heat pipe solar collector could be used. In this case, only one arranged in the solar collector heat exchanger tube is flowed through in frost, which heats only the direct area of the header with water from the memory. The heat losses through the frost protection circuit are thus almost eliminated.
  • the solar collector preferably has filling and shut-off valves. In areas with a higher probability of frost and longer low temperatures, the collector can then simply be emptied via the water pipe. For the refilling of the collector, no delivery pumps and venting measures are necessary.
  • the filling and shut-off valves offer the advantage that the solar collector can be easily decalcified.
  • the shut-off valves then separate the solar collector from the water cycle.
  • the solar collector (only approx. 1.5 liters filling volume) is filled directly with the descaling agent via the filling valves, emptied and then rinsed with water. While conventional solar systems with antifreeze liquid, e.g. in holiday homes out of season, not to be emptied (due to corrosion in the pipelines), this is easily possible with the water-powered system described here.
  • the return is advantageously also a reflux and / or overflow valve.
  • This return valve prevents the hot water tap, that water from the supply line of the drinking water supply passes directly into the hot water tank. After or during the removal of hot water via a withdrawal line from the hot water tank this is filled by water from the drinking water supply line is passed only through the solar collector in the store. The water that has entered the storage tank through the warm solar collector is already preheated. Furthermore, it is thus avoided that air separated in the collector, as always occurs in a water circulation operation, overrides the circulation pump.
  • the flowing through the filling of the memory directly through the collector with high flow velocity water prevents air bubbles and thus a malfunction of the circulation pump, because the high flow velocity and the flow pressure air or steam bubbles are easily pushed out of the solar collector.
  • An overcurrent function of the valve can also avoid pressure peaks during the filling process, as it opens when a limit value is exceeded and thus additional water from the supply line via the return can get into the memory.
  • the principle of the forced flow of the solar collector when tapping is also after plant stagnation advantage. If, for example, a certain storage temperature, for example 80 ° C, is exceeded, the solar control switches off the circulation pump to limit the temperature of the storage tank, the collector heats up further until vapor bubbles possibly arise. A restart of the pump only takes place when, on the one hand, the storage tank temperature drops below approx. 80 ° C and, on the other hand, the collector temperature drops below approx. 125 ° C.
  • this valve ensures that when the solar system is empty, or if an optional shut-off valve in the collector is closed, the DHW cylinder can be filled directly via the return line.
  • a desired bypass control is achieved and the memory can be used without solar circuit. For example, by electric heating coils or a heat exchanger in winter.
  • a TW expansion vessel is located to accommodate the backflow of water from the solar collector upstream of the return flow.
  • the pressure rises the water pressed out of the solar collector by the steam can be absorbed in the expansion tank. Once contained in the memory or in the collector water does not return so in the drinking water supply.
  • FIG. 1 view of the solar system
  • the generally designated 10 in Fig. 1 solar system for hot water production consists of at least one solar collector 20 and a memory 30, which in the present case is a commercial electric hot water tank.
  • the solar collector 20 has a return line 22 which is connected to the feed line 40 of a drinking water supply.
  • a circulation pump 24 is arranged in the region of the collector return 22 in the region of the collector return 22 in the region of the collector return 22, a circulation pump 24 is arranged.
  • a common port 50 connects flow 23 and memory return 27 to the memory.
  • the solar collector 20 is connected via the return 22,27 and the flow 23 to the memory 30.
  • the solar collector 20 has a temperature sensor 26, which is connected via a control device 25 with the circulation pump 24 and, on the special connector 50, arranged in Fig. 2 in more detail, temperature sensor 54 is connected to.
  • the circulation pump 24 starts and the heated water flows through the lead 23, via the common port 50, into the lower storage area.
  • the water cooled in the accumulator 30 flows via the common connection 50 into the accumulator return 27 back into the solar circuit and thus to the solar collector 20.
  • check valve 42 is arranged between feed line 40 and storage return 27, a check valve and / or an overflow valve 42 is arranged.
  • check valve 42 is optionally an expansion vessel (not shown here) is provided.
  • the memory 30 has two connections, a cold water inlet 31 and a hot water outlet 32. At the cold water inlet flow line 23 and return 22,27 of the solar circuit are arranged on the common connection, while the hot water outlet is followed by a withdrawal line 60. The inner tube 53 projects beyond the outer tube 52.
  • the common connection 50 consists of a coaxial tube 51, preferably with a diameter of about 8 to 10 mm.
  • the latter is made of an outer tube 52 and a hermetically fluid-tight inner tube 53, which in the memory 30 protrudes formed. It can also be seen that the inner tube 53 projects beyond the outer tube 52.
  • the outer tube 52 is connected with a screw 56 to the cold water inlet 31 of the memory 30.
  • the inner tube 53 emerges from the outer tube 52 at a penetration 57 out of this.
  • the inner tube 53 is preferably welded to the outer tube 52 at the penetration 57. Alternatively, the location of the penetration 57 may also be sealed with sealing material.
  • the outer tube 52 has in addition to the screw 56 for connection to the cold water inlet 31 of the memory 30 via a further screw 58 for connection to the accumulator return 27. Also, the inner tube 53 has a screw 59 for connection to the supply 23rd
  • connection point 55 may be a screw or socket connection. All screw connections 56,58,59 can also be socket joints.

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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne une installation solaire pour la production d'eau chaude, avec au moins un collecteur solaire qui est relié à un accumulateur par une conduite d'aller et une conduite de retour. La conduite de retour peut être raccordée à une conduite d'alimentation d'une alimentation en eau et une pompe de circulation est montée sur la conduite de retour. Selon l'invention, il est prévu que le collecteur solaire soit directement parcouru par de l'eau provenant de l'alimentation en eau. La conduite d'aller et la conduite de retour peuvent être raccordées à l'accumulateur par un raccordement commun.
PCT/EP2010/060865 2009-07-29 2010-07-27 Installation solaire pour la production d'eau chaude WO2011012608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009035230.9 2009-07-29
DE102009035230A DE102009035230A1 (de) 2009-07-29 2009-07-29 Solaranlage zur Warmwasseraufbereitung

Publications (1)

Publication Number Publication Date
WO2011012608A1 true WO2011012608A1 (fr) 2011-02-03

Family

ID=42938521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/060865 WO2011012608A1 (fr) 2009-07-29 2010-07-27 Installation solaire pour la production d'eau chaude

Country Status (2)

Country Link
DE (1) DE102009035230A1 (fr)
WO (1) WO2011012608A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2955459A1 (fr) * 2014-06-12 2015-12-16 Bosch Termotecnologia S.A. Dispositif d'alimentation, vanne multi-voies et système et procédé de fonctionnement d'un tel système
US9489956B2 (en) 2013-02-14 2016-11-08 Dolby Laboratories Licensing Corporation Audio signal enhancement using estimated spatial parameters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435009A1 (fr) * 1978-08-29 1980-03-28 Bosch Gmbh Robert Installation de preparation d'eau chaude de consommation
DE2907657A1 (de) * 1979-02-27 1980-08-28 Messerschmitt Boelkow Blohm Solaranlage fuer die direkte brauchwassererwaermung
JPS5869363A (ja) * 1981-10-22 1983-04-25 Matsushita Electric Ind Co Ltd 太陽熱集熱装置
US4623093A (en) * 1984-04-06 1986-11-18 The Marley-Wylain Company Combination discharge and supply fitting for hot water tank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435009A1 (fr) * 1978-08-29 1980-03-28 Bosch Gmbh Robert Installation de preparation d'eau chaude de consommation
DE2907657A1 (de) * 1979-02-27 1980-08-28 Messerschmitt Boelkow Blohm Solaranlage fuer die direkte brauchwassererwaermung
JPS5869363A (ja) * 1981-10-22 1983-04-25 Matsushita Electric Ind Co Ltd 太陽熱集熱装置
US4623093A (en) * 1984-04-06 1986-11-18 The Marley-Wylain Company Combination discharge and supply fitting for hot water tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9489956B2 (en) 2013-02-14 2016-11-08 Dolby Laboratories Licensing Corporation Audio signal enhancement using estimated spatial parameters
EP2955459A1 (fr) * 2014-06-12 2015-12-16 Bosch Termotecnologia S.A. Dispositif d'alimentation, vanne multi-voies et système et procédé de fonctionnement d'un tel système

Also Published As

Publication number Publication date
DE102009035230A1 (de) 2011-02-17

Similar Documents

Publication Publication Date Title
DE2609489B2 (de) Wärmepumpenanlage zum Aufheizen des Heizwassers und von Brauchwasser
AT508481B1 (de) Verfahren zur erwärmung von brauchwasser
DE102008029654A1 (de) Anordnung und Verfahren zur Bereitstellung von warmem Trinkwasser mit einem Wärmeübertrager
DE102004004817A1 (de) Verfahren und elektronische Steuereinrichtung zum Steuern von Heizvorgängen in einer Kaffeemaschine
DE102010033620A1 (de) Verfahren und Vorrichtung zum Erwärmen eines Fluids in einem Pufferspeicher
DE102005035821B3 (de) Thermische Solaranlage
DE102008057495A1 (de) Wärmespeicheranordnung
DE2837565A1 (de) Einrichtung zum bereiten von warmem brauchwasser
EP1936298B1 (fr) Dispositif de protection de siphon contre le gel
DE2919809A1 (de) Warmwasserbereiter fuer mobile anlagen
DE2638834A1 (de) Solar-brauchwasserheizung
WO2011012608A1 (fr) Installation solaire pour la production d'eau chaude
EP2031311A2 (fr) Système de chauffage et/ou installation de préparation d'eau chaude
DE19504730C1 (de) Warmwasserbereitungsanlage nach dem Durchflußprinzip mit Leistungsbegrenzung
DE10243170A1 (de) Heizungsanlage mit einer Wärmepumpe mit Kältemittelverflüssiger
DE102012102931A1 (de) Wassergeführtes Solarsystem
EP2551604A1 (fr) Installation solaire
EP1878974A1 (fr) Accumulateur combiné
EP1092926A2 (fr) Système de chauffage solaire d'eau sanitaire avec des dispositifs contre la légionelle
AT501612B1 (de) Verfahren zum betreiben einer warmwasserbereitungsanlage und warmwasserbereitungsanlage
DE4438986A1 (de) Anordnung zur Brauchwasserbereitung
DE2301832A1 (de) Steuervorrichtung fuer ein zentralheizungssystem
DE4224437C2 (de) Thermische solaranlage mit einem im kreisprozess gefuehrten waermetraeger
DE102014119530A1 (de) Heizungssystem für Gebäude und Verfahren zum Betreiben eines Heizungssystems
DE10062208A1 (de) Gefrierschutz für Wasserleitungen

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10736727

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 10736727

Country of ref document: EP

Kind code of ref document: A1