US20140251309A1 - Method and configuration for heating buildings with an infrared heater - Google Patents

Method and configuration for heating buildings with an infrared heater Download PDF

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Publication number
US20140251309A1
US20140251309A1 US14/204,603 US201414204603A US2014251309A1 US 20140251309 A1 US20140251309 A1 US 20140251309A1 US 201414204603 A US201414204603 A US 201414204603A US 2014251309 A1 US2014251309 A1 US 2014251309A1
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United States
Prior art keywords
storage tank
heat exchanger
feed
buffer storage
solar collector
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Abandoned
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US14/204,603
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English (en)
Inventor
Thomas Kuebler
Jens Findeisen
Matthias Raedle
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KUEBLER GmbH
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KUEBLER GmbH
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Assigned to KUEBLER GMBH reassignment KUEBLER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RAEDLE, MATTHIAS, FINDEISEN, JENS, KUEBLER, THOMAS
Publication of US20140251309A1 publication Critical patent/US20140251309A1/en
Abandoned legal-status Critical Current

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    • 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
    • F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
    • 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
    • F24D11/005—Central heating systems using heat accumulated in storage masses water heating system with recuperation of waste heat
    • 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
    • F24D12/00—Other central heating systems
    • F24D12/02—Other central heating systems having more than one 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
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/06—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated
    • F24D5/08—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated with hot air led through radiators
    • 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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0488—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using fluid fuel
    • 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
    • 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
    • F24D2200/16—Waste heat
    • F24D2200/18—Flue gas recuperation
    • 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
    • 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]
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy

Definitions

  • the invention relates to a method and a configuration for heating buildings using an infrared heater.
  • the heating system includes a radiant tube arranged in a first housing and having a first at which gas, heated by a burner, is conveyed, and having a second end fluidically connected to a heat exchanger, which conveys part of the thermal energy contained in the heated gas to a buffer storage tank.
  • the energy can be removed from the buffer to heat up service water or to heat a second part of a building thermally isolated from the first building, or a second building.
  • Such infrared heaters have been sold by the applicant for a long time. They comprise a housing, which is usually suspended horizontally and open at the bottom, in which a radiant tube is accommodated onto which heated air is directed by a burner, in particular a gas burner, and a fan. Because the temperature generated thereby of the (usually black) outside of the radiant tube is in the region of 300° C. to 750° C., the radiant tube emits infrared radiation in the manner of a black body, which results in direct heating of the environment below the radiant tube.
  • the prior art infrared heaters of the above-mentioned type are subject to the disadvantage that the residual heat in the heated gas is used inadequately after it has left the radiant tube, which adversely affects the overall efficiency of the infrared heaters.
  • a method of heating buildings comprising:
  • the heater includes a radiant tube arranged in a first building and to which at a first end a gas, heated by a burner, is conveyed, and which is fluidically connected at its second end to a heat exchanger which conveys part of the thermal energy contained in the heated gas to a buffer storage tank, from which said energy can be removed in particular to heat up industrial water or to heat a second part of a building thermally isolated from the first building, or a second building, is characterized in that the feed and/or return of the buffer storage tank can be fluidically connected to the feed and/or return of a thermal solar collector via pipes and switchable valves.
  • the invention comprises a particular combination of a dark radiator heating system, as disclosed in the abovementioned US 2010/0260490 A1 and DE 10 2007 047 661, with one or more likewise known thermal solar collectors, as a result of which considerable advantages follow, in comparison with the individual systems, said advantages being described in detail below.
  • FIG. 1 shows a radiation heater configuration of the prior art with a heat exchanger and a buffer storage tank, but no solar collector;
  • FIG. 2 shows a schematic view of the pipe routing of the radiation heating configuration according to the invention during mixed heating mode
  • FIG. 3 shows a schematic view of the pipe routing of the radiation heating configuration according to the invention during thawing mode of a solar collector covered with frost or snow;
  • FIG. 4 shows a schematic view of the components and pipe routing for a preferred embodiment of the radiation heating configuration according to the invention by means of which all the operating modes of the method according to the invention can be implemented.
  • FIG. 1 there is illustrated a normal operating condition of a radiation heater, which is in particular used for industrial halls.
  • the figure shows the interconnection, represented as a block diagram, of a dark radiator heater 1 with a heat exchanger 2 and a buffer storage tank 4 , and the associated pipes and consumer units.
  • the configuration shown in FIG. 1 represents the basic configuration which is used to heat halls very efficiently. This happens by the use of a dark radiator 1 by way of which the air in a building is heated as little as possible but nevertheless creates a comfortable temperature for the persons who work in the building, for example a large hall.
  • the power which is not delivered as radiant heat is partially reclaimed via a heat exchanger 2 , reference being made to the document mentioned for detailed information.
  • the heat exchanger 2 is preferably likewise mounted beneath the hall ceiling.
  • the side of the heat exchanger receiving the heated gas is considered the primary side and the conveying-medium (i.e., water) side that is connected to the storage tank 4 is considered the secondary side.
  • the consumer units 7 which are indicated only schematically in FIG. 1 , are connected to the buffer storage tank 4 via a pipe 8 .
  • the consumers 7 can, in particular, be heating bodies in a second building or a thermally insulated subarea of the building in which the infrared radiator 1 is also arranged.
  • the consumer units can also be the temporary storage tanks of a classical heater that is present.
  • the buffer storage tank 4 used in FIG. 1 differs from a classical heat storage tank for oil, gas, or other conventional heating systems in that it is preferably designed with a greater thermal capacity.
  • the design of the buffer storage tank 4 with a greater thermal capacity results in a higher thermal inertia—in control engineering terms of an integral control loop—for radiation heaters than for classical heaters which feed in the heat only via underfloor heating systems or heating bodies.
  • the increased heat storage capacity of the buffer storage tank 4 compared with conventional classical heaters in conjunction with the solution according to the invention is advantageous.
  • the operator of the hall presets a desired target temperature in the hall and the infrared radiator 1 switches on and heats the objects and people situated in the hall and a reference point which represents the measuring location.
  • the residual heat content of the exhaust gas 5 , 6 which is not used as radiant heat is delivered to the buffer storage tank 4 via the heat exchanger 2 .
  • This buffer storage tank 4 can be designed as a mixed storage tank but is particularly advantageously a known stratified storage tank with one or more hot water inlets or outlets in the upper region and one or more cold water inlets and outlets in the lower region.
  • the heat is discharged in the upper part of the storage tank and the colder portion of the fluid, which is preferably water, is conveyed out of a connector in the lower part of the storage tank 4 by a pump 13 , via the pipe 9 , via the return RL, into the heat exchanger 2 .
  • the cold water removed from the buffer storage tank 4 is heated in the heat exchanger 2 by the hot exhaust gases 5 , 6 and is recycled into the upper part of the buffer storage tank 4 via the pipe 10 .
  • a known thermal solar collector 3 is additionally integrated into the supply pipe 9 to the return RL of the heat exchanger 2 and into the pipe 10 which connects the feed VL of the heat exchanger 2 to the inlet on the top of the buffer storage tank 4 .
  • This consequently offers the possibility that solar power can be taken from the solar thermal collector 3 , in particular during the transition seasons but also to a lesser extent during wintertime, even when this is sometimes no longer possible with conventional solar collectors alone, or is exceedingly inefficient.
  • the feed VL of the solar collector 3 is fluidically connected via a pipe 15 a and a branch piece 20 , for example a T-piece or a Y-piece, to the supply pipe 10 which leads from the feed VL of the heat exchanger 2 to an upper inlet of the buffer storage tank 4 .
  • the cold water outlet of the buffer storage tank 4 is connected to the return RL of the solar collector 3 via a further branch piece 22 , for example a T-piece or Y-piece in the pipe 9 which leads from the lower part of the buffer storage tank 4 to the return RL of the heat exchanger 2 , via a supply pipe 15 b.
  • a solar pump 12 and optionally a check valve 26 , the flow rate of which is changed depending on the intensity of the solar radiation which is recorded by a known intensity sensor 11 , is situated in the supply pipe 15 b.
  • the water which is conveyed through the solar collector 3 by the solar pump 12 is heated in the solar collector 3 , and emerges from the feed VL is mixed in the first branch piece 20 with the water which was heated in the heat exchanger 2 when the infrared heater 1 was operating and emerges from the feed VL.
  • the temperature of the water heated in the solar collector 3 which for example is only 30° C. and is too low to be used directly in the thermal consumer units 7 or as service water, is raised to a usable temperature of, for example, 60° C. before the water is fed into the buffer storage tank 4 .
  • the solar collector 3 which is used hereby is preferably mounted on the outside of the roof of the first or second building. This can be either a flat roof or a pitched roof. In particular in the northern parts of North America which correspond in terms of latitude to central European, Eastern European, and Northern European countries, the sunlight strikes the collector 3 with irregular intensity. The heat requirement depends on the purpose for which the building is used, in other words differently at the weekend and during the week and differently during the day and night.
  • the dark radiator heater 1 is here switched on and off cyclically according to the heating needs of the hall and supplies the heat to the heat exchanger 2 via the exhaust gas 5 . In the normal control system of the dark radiator heater, this heat is transferred to the buffer storage tank 4 via the pipe 10 and the cooler exhaust gas 6 emerges from the heat exchanger 2 . The solar energy is fed into this system in a different cycle determined by the sun.
  • the normal installation of a solar thermal system without a hall heater includes the necessary installation of the control system, the pipe run of the solar energy system from the roof to the basement/boiler room of the industrial or private premises, and the investment costs of the buffer storage tank.
  • the pipes and the buffer storage tank or tanks 4 , and large parts of the electronic control equipment for an installed heating system according to FIGS. 2 to 4 are already present so that advantageously only a relatively low amount of additional investment is entailed when retrofitting the solution according to the invention.
  • the solar collector 3 When there is sufficient solar radiation, the radiated energy is supplied in the form of heat via the pipe 15 a and the pipe 10 ultimately to the buffer storage tank 4 .
  • the solar collector 3 receives, from the coldest point of the storage tank 4 via the pump 13 , the pipe 9 , a T-piece and then the pump 12 , cold water from the lower region of the buffer storage tank 4 and conveys it into the solar collector 3 .
  • all the already present installations of the basic configuration shown in FIG. 1 can thus advantageously be reused when retrofitting the solar collector 3 .
  • the capital cost of the collector 3 itself is usually much less than half the total investment of the whole system, which again makes it advantageous to connect the solar collector to the dark radiator heater.
  • the cold water from the lower part of the buffer storage tank 4 can advantageously be used to melt and clear the snow and ice from the top of the solar collector 3 .
  • cold water is fed via the solar pump 12 and the pump 13 into the solar collector 3 .
  • the water emerging from the feed VL of the solar collector 3 is not heated in this case but instead is cooled by the ice.
  • the cooled water is fed into the return RL, labeled RL, of the heat exchanger 2 via the pipe 16 .
  • a check valve 25 is arranged between the branch piece 23 and the branch piece 22 , as shown in FIG. 3 .
  • This pipe configuration allows a minimum number of pipes to be required.
  • the cooled water is thus preferably fed from the feed VL of the solar collector 3 only when the dark radiator 1 , i.e.
  • the infrared radiation heater is not switched on.
  • the cold water is conveyed only through the heat exchanger 2 and passes via the pipe 10 and a first three-way valve 14 and the pipes 17 and 8 to the cold water inlet in the lower part of the buffer storage tank 4 .
  • the advantage of the embodiment shown in FIG. 3 of the configuration according to the invention is that no heat energy at all is wasted and there is no mixing of cold and hot water, which improves efficiency.
  • the dark radiator 1 is switched on, the very cold water is fed from the feed VL of the solar collector 3 via the pipe 16 and the branch piece 23 into the heat exchanger 2 .
  • the hot exhaust gas 5 from the infrared radiator 1 can be cooled down particularly quickly, which advantageously enables large-scale use of the condensation heat of the exhaust gas of the dark radiator. This in turn results in a significant increase in the efficiency of the whole system.
  • the water leaves the heat exchanger 2 as hot or warm water and is preferably fed into the upper region of the storage tank 4 via the first three-way valve 14 .
  • the likewise known problem can also be overcome that, in the case of the known solar thermal collectors 3 , the temperature falls below the dew point in the early hours of the morning when the outside temperatures are above freezing point and the solar collector is not covered with snow and ice. Because the temperature falls below the dew point, the dew that occurs on the surfaces of the collector reflects back the sun's rays, which greatly reduces the solar thermal power.
  • the dew can be evaporated via the heating of the solar collector by the water from the buffer storage tank 4 , or also directly by the waste heat that occurs when the dark radiator 1 starts up for the first time in the morning, without the additional use of primary energy, as a result of which the solar collector 3 reaches its full capacity within a very short time.
  • the sensor 11 hereby preferably detects, likewise via the recorded intensity of the solar radiation and/or the temperature of the solar collector 3 , when either the ice or the snow has thawed away, or when the condensation/dew has evaporated, at which point the system is immediately switched to the mixed operating mode described in conjunction with FIG. 2 .
  • This provides the advantage that the thawing or evaporation takes only a few minutes and the full capacity of the solar collector 3 is then available to heat the water in the buffer storage tank 4 .
  • a further advantage of this embodiment of the invention consists in the fact that the thermal energy used for the thawing or dew removal normally has no usefulness because the temperature is too low.
  • the application of the method according to the invention or the associated configuration makes it possible to raise the temperature of the solar-heated water to a usable level without using a heat pump or the like.
  • the reason for this is that in a transitional period, in particular in spring or fall, at outside temperatures at which heating is normally required, the solar thermal collectors are no longer capable of providing adequate amounts of hot water at a sufficiently high temperature which is required by current conventional heating systems for economic operation.
  • the simultaneous drop in the outside temperature and the associated increased losses from the reduced radiation of the sun which is low in the sky in the transition seasons result in, for example, a water temperature of only 40° C. being achieved.
  • the temperature of the water can be raised, with the embodiment shown in FIG. 3 , from, for example, 40° C. to 60° C., as a result of which this can be used directly in a conventional convection heater in the thermally isolated building part, or can be fed into the upper part of the buffer storage tank 4 .
  • this is achieved by returned water, for example from a conventional convection heating body 7 , entering via the pipe 8 at approximately 30° C. into the lower part of the buffer storage tank 4 , from where it is conveyed via the pumps 12 and 13 into the solar collector 3 in which it is heated, for example, to just 40° C.
  • returned water for example from a conventional convection heating body 7
  • the heated water is then pumped via the pipe 16 and the branch piece 23 into the return RL of the heat exchanger 2 in order to be reheated there to 60° C. or more.
  • the water is next profitably fed via the first three-way valve 14 into the upper part of the buffer storage tank 4 .
  • the thermal solar collector 3 which would not have been possible without the additional use according to the invention of the dark radiator 1 because, without the latter, the flow temperature of the solar collector 3 is too low to be able to make efficient direct thermal use of the heat energy radiated by the sun.
  • the first three-way valve 14 is switched through so that the water emerging from the feed VL of the heat exchanger 2 , which in this case was not additionally heated up in the heat exchanger 2 , is fed via the pipe 17 into the lower part of the buffer storage tank 4 .
  • FIG. 4 A further advantageous embodiment of the configuration according to the invention with the complete pipework, shown by way of example, and the necessary pumps and valves is shown in FIG. 4 , in this case a first and a second three-way valve 14 and 24 being used in order to be able to operate the configuration according to the different embodiments of the method according to the invention.
  • the feed VL of the solar collector 3 can be connected via a second three-way valve 24 or via the pipe 16 and the T-piece 23 to the return RL of the heat exchanger 2 or the supply pipe 10 which is fluidically connected to the feed VL of the heat exchanger 2 via a branch piece 23 .
  • the supply pipe 10 can be connected via the first further three-way valve 14 either to the hot water inlet in the upper part of the buffer storage tank 4 or via the pipe 17 to the cold water inlet in the lower part of the buffer storage tank 4 .
  • the pump 13 and the solar pump 12 are switched on. They convey cool water from the lower part of the buffer storage tank 4 , via the pipe 9 , the branch piece 22 , and the pipe 15 b, to the return RL of the solar collector 3 .
  • the heated water which emerges from the solar collector 3 and has been heated sufficiently so that it can be used directly in the heating devices 7 is then fed via the second three-way valve 24 into the pipe 15 a. It passes through the latter via the branch piece 20 and the pipe 10 to the first three-way valve 14 which is switched such that the water is fed into the upper part of the buffer storage tank 4 .
  • the hot water at for example 60° C., is supplied, when required, directly to the heating devices 7 in which it discharges part of the heat energy contained, before it is fed via the supply pipe 8 back into the lower part of the buffer storage tank 4 .
  • the first three-way valve 14 is switched and the cool water is fed into the lower part of the buffer storage tank 4 via the pipe 17 .
  • a temperature sensor can be provided in the pipe 10 or at the first three-way valve 14 itself, and depending on which the first three-way valve 14 is switched in order to feed the water into the upper or lower part of the buffer storage tank 4 .
  • the second three-way valve 24 is switched and the cool water emerging from the feed VL of the solar collector 3 is fed via the pipe 16 and the branch piece 23 into the return RL of the heat exchanger 2 in order to raise its temperature to a level where it can be fed directly into the upper part of the buffer storage tank 4 .
  • the additionally heated water emerging from the feed VL of the heat exchanger 2 is fed via the pipe 10 and the correspondingly switched first three-way valve 14 directly into the upper part of the buffer storage tank 4 , from which it is taken by the heating devices as required and fed back, cooled, via the pipe 8 into the lower part of the buffer storage tank.
  • the second three-way valve 24 is switched to thaw snow or remove dew from the collector in such a way that the feed VL of the solar collector 3 is connected to the return RL of the heat exchanger 2 via the pipe 16 and the branch piece 23 .
  • a check valve 25 is preferably situated between the branch pieces 22 and 23 of the collector circuit in order to hereby prevent the water cooled in the collector 3 from flowing via the branch piece 23 into the supply pipe 15 b.
  • the first three-way valve 14 is switched such that the water which is circulated via the pump 13 and the pipe 9 and the solar pump 12 by the solar collector 3 and the heat exchanger 2 is fed into the upper part of the buffer storage tank 4 via the pipes 10 .
  • the collector 3 it is alternatively possible for the collector 3 to be thawed particularly efficiently before the dark radiator 1 is started up for the first time as long as the dark radiator 1 is switched off. This ensures that only cold water is pumped from the lower part of the buffer storage tank 4 through the solar collector 3 , the water heating the solar collector 3 in order to remove snow and ice, as well as dew, from the surface of the collector 3 .
  • the cold water that is taken from the lower part of the buffer storage tank 4 through the pipe 9 when the dark radiator 1 is switched off is fed into the return RL of the collector 3 by the solar pump 12 via the branch piece 22 and the supply pipe 15 b and preferably conveyed back into the lower part of the buffer storage tank 4 via the second three-way valve 24 and the pipe 15 a, the branch piece 20 , the pipe 10 , the first three-way valve 14 and the pipe 17 .
  • the efficiency of the overall system can advantageously be increased even further because only cold water is used to thaw the collector 3 , said water then being fed back again into the lower part of the buffer storage tank, from which it can be taken to be heated by the heat exchanger 2 when the dark radiator 1 is running.
  • the second three-way valve 24 is switched and the water which emerges from the feed VL of the solar collector 3 and is heated by the solar radiation is fed via the branch piece 23 into the heat exchanger 2 , in which the temperature of the water when the dark radiator 1 is switched on is raised preferably above a temperature of 60° C. so that it can be fed, via the correspondingly switched first three-way valve 14 , into the upper part of the buffer storage tank 4 for direct use by the consumer units 7 .
  • the water is fed into the lower part of the heat exchanger via the pipe 17 .
  • the circulation of water through the solar collector 3 can be interrupted by a stop valve 26 connected upstream from the solar pump 12 .
  • the pumps 12 and 13 and the first and second three-way valves 14 , 24 are preferably controlled by a known electronic control device, not shown in detail in the drawings, which is correspondingly connected to the abovementioned sensors.

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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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
US14/204,603 2013-03-11 2014-03-11 Method and configuration for heating buildings with an infrared heater Abandoned US20140251309A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013004061.2 2013-03-11
DE102013004061 2013-03-11
DE102013017677.8 2013-10-25
DE102013017677.8A DE102013017677A1 (de) 2013-03-11 2013-10-25 Verfahren und Anordnung zum Beheizen von Gebäuden mit einer lnfrarot-Heizung

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US (1) US20140251309A1 (zh)
EP (1) EP2778540B1 (zh)
CN (1) CN104048349B (zh)
DE (1) DE102013017677A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10034415B2 (en) * 2016-12-28 2018-07-24 Jingway Technology Co., Ltd. Water cooling device
CN114543149A (zh) * 2022-02-28 2022-05-27 西安热工研究院有限公司 一种利用空气进行长距离供热的系统和运行方法

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CN104048349B (zh) 2019-05-28
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DE102013017677A1 (de) 2014-09-11
EP2778540B1 (de) 2017-12-27

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